Added unit and integration tests

Refactoring main and app.go to cmd. Refactoring to adding logrus instead of log. Refactoring handlers to add a global logger.

.gitignore

@@ -0,0 +1,36 @@
+
+
+
+# Binaries for programs and plugins
+*.exe
+*.exe~
+*.dll
+*.so
+*.dylib
+bin
+bin/*
+rpm
+rpm/*
+dist
+
+tmp/
+# Test binary, built with `go test -c`
+*.test
+
+# Output of the go coverage tool, specifically when used with LiteIDE
+*.out
+coverage
+.coverage
+
+
+# ignore the following files/directories
+**/userdata/*
+examples
+tests
+e2e
+site/
+.vscode/
+.idea/
+.DS_Store
+__rd*
+tests/out

Makefile

@@ -1,11 +1,52 @@
+# Inspired from https://dustinspecker.com/posts/go-combined-unit-integration-code-coverage/ and https://netdevops.me/2023/test-coverage-for-go-integration-tests/
+BIN_DIR = $(CURDIR)/bin
+COVERAGE_DIR = $(CURDIR)/coverage
+BINARY = $(BIN_DIR)/gosimplenpm
+
+.PHONY: clean
 clean:
 	go clean
+
+.PHONY: dep
 dep:
 	go mod tidy
+
+.PHONY: fmt
 fmt:
 	go fmt ./...
+
+.PHONY: lint
 lint:
 	golangci-lint run
+
+coverage-unit:
+	go test ./... -short -covermode=count -coverprofile=./coverage/unit.out
+	go tool cover -func=./coverage/unit.out
+coverage-integration:
+	go test ./... -run Integration -covermode=count -coverprofile=./coverage/integration.out
+	go tool cover -func=./coverage/integration.out
+
+.PHONY: build-debug
+build-debug:
+	mkdir -p $(BIN_DIR)
+	go build -o $(BINARY) -cover main.go
+
+.PHONY: test
+test: build-debug
+	rm -rf $(COVERAGE_DIR)
+	mkdir -p $(COVERAGE_DIR)
+	go test -cover ./... -args -test.gocoverdir="$(COVERAGE_DIR)"
+
+.PHONY: coverage-full
+coverage-full: test
+	go tool covdata textfmt -i=$(COVERAGE_DIR) -o $(COVERAGE_DIR)/coverage.out
+	go tool cover -func=$(COVERAGE_DIR)/coverage.out
+
+.PHONY: coverage-html
+coverage-html:
+	go tool cover -html=./coverage/coverage.out -o ./coverage/coverage.html
+	open ./coverage/coverage.html
+
+.PHONY: lint-all
 lint-all:
 	golangci-lint run --enable-all
-.PHONY: dep lint clean

README.md

@@ -10,6 +10,22 @@ TODO...
 
 TODO...
 
-# Work List
+# TODO List
 
-TODO...
+- [x] Adding unit tests
+- [x] Adding integration tests
+- [ ] Adding e2e tests
+- [ ] Adding support for log files, that is, writing logs to a log file
+- [ ] Support [abbreviated_package_format](https://github.com/verdaccio/verdaccio/issues/2792)
+- [ ] Copy artifactory setup where there is a package.json (current package.json) and there is also an index json for the npm cli. Basically, the structure is like this
+- [ ] Add a max bytes for publishing as shown [here](https://stackoverflow.com/questions/28282370/is-it-advisable-to-further-limit-the-size-of-forms-when-using-golang)
+
+```sh
+registry
+|-.npm
+|-|-@scope1/package1
+|-|-|-index.json
+|-@scope1/package1
+|-|-package1-x.x.x.tgz
+|-|-package.json
+```

app.go

@@ -1,28 +0,0 @@
-package main
-
-import (
-	"log"
-
-	"github.com/gorilla/mux"
-
-	"gosimplenpm/handler"
-)
-
-type application struct {
-	logger *log.Logger
-}
-
-func (app *application) Routes() *mux.Router {
-	m := mux.NewRouter()
-
-	// main handler
-	m.HandleFunc("/{name}", handler.Get).Methods("GET")
-	m.HandleFunc("/{name}", handler.Publish).Methods("PUT")
-	// tar handlers
-	m.HandleFunc("/{name}/-/{tar}", handler.Tar).Methods("GET")
-	// tag handlers
-	m.HandleFunc("/-/package/{name}/dist-tags/{tag}", handler.DistTagDelete).Methods("DELETE")
-	m.HandleFunc("/-/package/{name}/dist-tags/{tag}", handler.DistTagPut).Methods("PUT")
-	m.HandleFunc("/-/package/{name}/dist-tags", handler.DistTagGet).Methods("GET")
-	return m
-}

cmd/gosimplenpm/conf.go

@@ -0,0 +1,26 @@
+package gosimplenpm
+
+import (
+	"fmt"
+	"gosimplenpm/internal/config"
+	"os"
+
+	"github.com/spf13/cobra"
+)
+
+var configCmd = &cobra.Command{
+	Use:     "config",
+	Aliases: []string{"conf"},
+	Short:   "Display the config file",
+	Run: func(_ *cobra.Command, _ []string) {
+		err := config.PrintConfigFile()
+		if err != nil {
+			fmt.Printf("Error printing config: %+v\n", err)
+			os.Exit(1)
+		}
+	},
+}
+
+func init() {
+	rootCmd.AddCommand(configCmd)
+}

cmd/gosimplenpm/root.go

@@ -0,0 +1,84 @@
+package gosimplenpm
+
+import (
+	"fmt"
+	"gosimplenpm/internal/config"
+	"gosimplenpm/internal/handler"
+	"gosimplenpm/internal/storage"
+	"os"
+
+	"github.com/sirupsen/logrus"
+	"github.com/spf13/cobra"
+)
+
+var rootCmd = &cobra.Command{
+	Use:   "gosimplenpm",
+	Short: "Gosimplenpm is an implementation of npm registry server",
+	Long: `Gosimplenpm is an implemenation of npm registry server.
+
+It creates the repository to host all your private npm repos. It can
+serve the npm packages offline. 
+
+Documentation about the npm private registry: 
+	https://docs.npmjs.com/packages-and-modules
+`,
+	Run: func(_ *cobra.Command, _ []string) {
+		err := config.VerifyConfig()
+		if err != nil {
+			fmt.Printf("Error verifying config: %+v\n", err)
+			os.Exit(1)
+		}
+		var cfg config.Config
+		err = config.LoadOrCreateConfig(&cfg)
+		if err != nil {
+			fmt.Printf("Error loading config: %+v\n", err)
+			os.Exit(1)
+		}
+		lvl, err := logrus.ParseLevel(cfg.LogLevel)
+		if err != nil {
+			fmt.Printf("%+v", err)
+			os.Exit(1)
+		}
+		log := &logrus.Logger{
+			Out:   os.Stdout,
+			Level: lvl,
+			Formatter: &logrus.TextFormatter{
+				FullTimestamp:   true,
+				TimestampFormat: "2009-01-02 15:15:15",
+			},
+		}
+		app := &handler.Application{
+			Conf:      cfg,
+			Logger:    log,
+			FSStorage: &storage.FSStorage{},
+		}
+
+		fmt.Println("\n Server is starting....")
+		err = app.Start()
+		if err != nil {
+			fmt.Printf("Server start up error: %+v\n", err)
+			os.Exit(1)
+		}
+	},
+}
+
+func Execute() {
+	err := rootCmd.Execute()
+	if err != nil {
+		os.Exit(1)
+	}
+}
+
+func init() {
+	rootCmd.CompletionOptions.HiddenDefaultCmd = true
+	// hide help command
+	rootCmd.SetHelpCommand(&cobra.Command{Hidden: true})
+	// hide help flag
+	rootCmd.PersistentFlags().BoolP("help", "h", false, "This help")
+	rootCmd.PersistentFlags().Lookup("help").Hidden = true
+	// TODO: get some variables from flags
+	rootCmd.Flags().StringVarP(&config.HTTPListen, "listen", "l", config.HTTPListen, "HTTP bind interface and port for server")
+	_ = rootCmd.MarkFlagRequired("listen")
+	rootCmd.Flags().BoolVarP(&config.CanLog, "verbose", "v", config.CanLog, "Logging level for server")
+	rootCmd.Flags().StringVar(&config.NpmRepoDir, "repodir", config.NpmRepoDir, "Repo dir to house published packages")
+}

go.mod

@@ -2,6 +2,20 @@ module gosimplenpm
 
 go 1.20
 
-require github.com/gorilla/mux v1.8.0
+require (
+	github.com/gorilla/mux v1.8.0
+	github.com/sirupsen/logrus v1.9.3
+	github.com/spf13/cobra v1.7.0
+	github.com/stretchr/testify v1.7.0
+	golang.org/x/crypto v0.10.0
+	golang.org/x/mod v0.11.0
+)
 
-// replace gosimplenpm/handler => ./handler
+require (
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/inconshreveable/mousetrap v1.1.0 // indirect
+	github.com/pmezard/go-difflib v1.0.0 // indirect
+	github.com/spf13/pflag v1.0.5 // indirect
+	golang.org/x/sys v0.9.0 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
+)

go.sum

@@ -1,2 +1,32 @@
+github.com/cpuguy83/go-md2man/v2 v2.0.2/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46tRHOmNcaadrF8o=
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/gorilla/mux v1.8.0 h1:i40aqfkR1h2SlN9hojwV5ZA91wcXFOvkdNIeFDP5koI=
 github.com/gorilla/mux v1.8.0/go.mod h1:DVbg23sWSpFRCP0SfiEN6jmj59UnW/n46BH5rLB71So=
+github.com/inconshreveable/mousetrap v1.1.0 h1:wN+x4NVGpMsO7ErUn/mUI3vEoE6Jt13X2s0bqwp9tc8=
+github.com/inconshreveable/mousetrap v1.1.0/go.mod h1:vpF70FUmC8bwa3OWnCshd2FqLfsEA9PFc4w1p2J65bw=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/russross/blackfriday/v2 v2.1.0/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
+github.com/sirupsen/logrus v1.9.3 h1:dueUQJ1C2q9oE3F7wvmSGAaVtTmUizReu6fjN8uqzbQ=
+github.com/sirupsen/logrus v1.9.3/go.mod h1:naHLuLoDiP4jHNo9R0sCBMtWGeIprob74mVsIT4qYEQ=
+github.com/spf13/cobra v1.7.0 h1:hyqWnYt1ZQShIddO5kBpj3vu05/++x6tJ6dg8EC572I=
+github.com/spf13/cobra v1.7.0/go.mod h1:uLxZILRyS/50WlhOIKD7W6V5bgeIt+4sICxh6uRMrb0=
+github.com/spf13/pflag v1.0.5 h1:iy+VFUOCP1a+8yFto/drg2CJ5u0yRoB7fZw3DKv/JXA=
+github.com/spf13/pflag v1.0.5/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg=
+github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/testify v1.7.0 h1:nwc3DEeHmmLAfoZucVR881uASk0Mfjw8xYJ99tb5CcY=
+github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+golang.org/x/crypto v0.10.0 h1:LKqV2xt9+kDzSTfOhx4FrkEBcMrAgHSYgzywV9zcGmM=
+golang.org/x/crypto v0.10.0/go.mod h1:o4eNf7Ede1fv+hwOwZsTHl9EsPFO6q6ZvYR8vYfY45I=
+golang.org/x/mod v0.11.0 h1:bUO06HqtnRcc/7l71XBe4WcqTZ+3AH1J59zWDDwLKgU=
+golang.org/x/mod v0.11.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
+golang.org/x/sys v0.0.0-20220715151400-c0bba94af5f8/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.9.0 h1:KS/R3tvhPqvJvwcKfnBHJwwthS11LRhmM5D59eEXa0s=
+golang.org/x/sys v0.9.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

handler/get.go

@@ -1,29 +0,0 @@
-package handler
-
-import (
-	"fmt"
-	"net/http"
-
-	"github.com/gorilla/mux"
-
-	"gosimplenpm/storage"
-)
-
-func Get(w http.ResponseWriter, r *http.Request) {
-	packageName := mux.Vars(r)["name"]
-
-	fileToServe, err := storage.GetPackageFromStore(packageName)
-	if err != nil {
-		http.Error(w, err.Error(), http.StatusInternalServerError)
-		return
-	}
-
-	if fileToServe == "" {
-		ret := fmt.Sprintf("Package not found: %s", packageName)
-		http.Error(w, ret, http.StatusNotFound)
-		return
-	}
-
-	// serve file
-	http.ServeFile(w, r, fileToServe)
-}

handler/publish.go

@@ -1,9 +0,0 @@
-package handler
-
-import (
-	"net/http"
-)
-
-func Publish(w http.ResponseWriter, r *http.Request) {
-
-}

handler/tagdelete.go

@@ -1,9 +0,0 @@
-package handler
-
-import (
-	"net/http"
-)
-
-func DistTagDelete(w http.ResponseWriter, r *http.Request) {
-
-}

handler/tagget.go

@@ -1,9 +0,0 @@
-package handler
-
-import (
-	"net/http"
-)
-
-func DistTagGet(w http.ResponseWriter, r *http.Request) {
-
-}

handler/tagput.go

@@ -1,9 +0,0 @@
-package handler
-
-import (
-	"net/http"
-)
-
-func DistTagPut(w http.ResponseWriter, r *http.Request) {
-
-}

handler/tar.go

@@ -1,9 +0,0 @@
-package handler
-
-import (
-	"net/http"
-)
-
-func Tar(w http.ResponseWriter, r *http.Request) {
-
-}

internal/config/conf.go

@@ -0,0 +1,318 @@
+package config
+
+import (
+	"bufio"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io"
+	"net"
+	"os"
+	"path"
+
+	"golang.org/x/crypto/bcrypt"
+)
+
+var (
+	// File to store the app configuration, like username, password, token, repo dir, logging level
+	ConfigFilePath string
+
+	// Repo dir
+	NpmRepoDir string
+
+	// HTTPListen
+	HTTPListen string
+
+	// Set Verbose Logging
+	CanLog bool
+
+	// Logging Level
+	LoggingLvl string
+
+	// Username
+	RegUser string
+
+	// Password
+	RegPwd string
+)
+
+type Config struct {
+	Token     string `json:"token"`
+	RepoDir   string `json:"repoDir"`
+	IpAddress string `json:"ipAddress"`
+	LogLevel  string `json:"logLevel"`
+}
+
+func checkIfCorrectIPPort(s string) bool {
+	host, port, _ := net.SplitHostPort(s)
+	if host == "" || port == "" {
+		return false
+	}
+	if net.ParseIP(host) != nil {
+		return true
+	}
+	_, err := net.ResolveIPAddr("ip", host)
+	return err == nil
+}
+
+func VerifyConfig() error {
+	if !checkIfCorrectIPPort(HTTPListen) {
+		return errors.New("ip address should be in the format of <ip>:<port>")
+	}
+
+	// Check if config file exists
+	dirname, err := os.UserHomeDir()
+	if err != nil {
+		return err
+	}
+	configDirPath, err := checkOrCreateConfigDir(dirname, true)
+	if err != nil {
+		return err
+	}
+
+	// TODO: Create a logging file (it should be located at .gosimplenpm/applogs)
+
+	ConfigFilePath = path.Join(configDirPath, "config.json")
+
+	if NpmRepoDir == "" {
+		NpmRepoDir = path.Join(dirname, ".gosimplenpm", "registry")
+		err := checkOrCreateRepoDir(NpmRepoDir)
+		if err != nil {
+			return err
+		}
+	} else if NpmRepoDir != "" {
+		err := checkOrCreateRepoDir(NpmRepoDir)
+		if err != nil {
+			return err
+		}
+	}
+
+	if CanLog {
+		LoggingLvl = "DEBUG"
+		fmt.Println("\n Enabled debug logging")
+	} else {
+		LoggingLvl = "INFO"
+	}
+
+	return nil
+}
+
+func checkOrCreateConfigDir(fp string, canCreate bool) (string, error) {
+	configDirPath := path.Join(fp, ".gosimplenpm", "config")
+	ok := isDir(configDirPath)
+	if !ok && canCreate {
+		err := os.MkdirAll(configDirPath, os.ModePerm)
+		if err != nil {
+			return "", err
+		}
+	}
+	if !ok && !canCreate {
+		return "", nil
+	}
+	return configDirPath, nil
+}
+
+func checkOrCreateRepoDir(repoDirPath string) error {
+	ok := isDir(repoDirPath)
+	if !ok {
+		err := os.MkdirAll(repoDirPath, os.ModePerm)
+		if err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func createConfig(cfg *Config, recreate bool) error {
+	var scanner *bufio.Scanner
+	if recreate {
+		fmt.Println("\nNew config variables. Saving...")
+	} else {
+		fmt.Println("\nConfig file is not found. Creating...")
+	}
+
+	configFile, err := os.Create(ConfigFilePath)
+	if err != nil {
+		return err
+	}
+
+	defer configFile.Close()
+
+	cfg.IpAddress = HTTPListen
+	cfg.LogLevel = LoggingLvl
+
+	// Get username
+	if cfg.Token == "" {
+		fmt.Println("Enter your username: ")
+		scanner = bufio.NewScanner(os.Stdin)
+		scanner.Scan()
+		err = scanner.Err()
+		if err != nil {
+			return err
+		}
+		RegUser = scanner.Text()
+
+		fmt.Println("Enter your password: ")
+		scanner = bufio.NewScanner(os.Stdin)
+		scanner.Scan()
+		err = scanner.Err()
+		if err != nil {
+			return err
+		}
+		RegPwd = scanner.Text()
+
+		token, err := generateAuthToken()
+		if err != nil {
+			return err
+		}
+
+		cfg.Token = token
+	}
+
+	fmt.Printf("The npm authToken is %s.\n", cfg.Token)
+
+	err = json.NewEncoder(configFile).Encode(cfg)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func loadConfig(cfg *Config) error {
+	configFile, err := os.Open(ConfigFilePath)
+	if err != nil {
+		return err
+	}
+
+	defer configFile.Close()
+
+	err = json.NewDecoder(configFile).Decode(cfg)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func LoadOrCreateConfig(cfg *Config) error {
+	var err error
+	ok := isFile(ConfigFilePath)
+
+	// If file is not found
+	if !ok {
+		err = createConfig(cfg, false)
+		if err != nil {
+			return err
+		}
+	}
+
+	if ok {
+		// File is found
+		err = loadConfig(cfg)
+		if err != nil {
+			return err
+		}
+
+		if cfg.Token == "" || cfg.IpAddress != HTTPListen || cfg.LogLevel != LoggingLvl || cfg.RepoDir != NpmRepoDir {
+			// recreate the config file
+			err = createConfig(cfg, true)
+			if err != nil {
+				return err
+			}
+		}
+	}
+
+	return err
+}
+
+func isFile(fp string) bool {
+	info, err := os.Stat(fp)
+	if os.IsNotExist(err) || !info.Mode().IsRegular() {
+		return false
+	}
+	return true
+}
+
+func isDir(fp string) bool {
+	info, err := os.Stat(fp)
+	if os.IsNotExist(err) || !info.IsDir() {
+		return false
+	}
+	return true
+}
+
+// Hash password
+func hashPassword(password string) (string, error) {
+
+	// Convert password string to byte slice
+	var passwordBytes = []byte(password)
+	// Hash password with Bcrypt's min cost
+	hashedPasswordBytes, err := bcrypt.GenerateFromPassword(passwordBytes, bcrypt.MinCost)
+	return string(hashedPasswordBytes), err
+}
+
+// Check if two passwords match using Bcrypt's CompareHashAndPassword
+// which return nil on success and an error on failure.
+// func doPasswordsMatch(hashedPassword, currPassword string) bool {
+// 	err := bcrypt.CompareHashAndPassword([]byte(hashedPassword), []byte(currPassword))
+// 	return err == nil
+// }
+
+func generateAuthToken() (string, error) {
+	hashed, err := hashPassword(RegPwd)
+	if err != nil {
+		return "", err
+	}
+	token := fmt.Sprintf("%s::%s", RegUser, hashed)
+	return token, nil
+}
+
+func PrintConfigFile() error {
+	// Check if config file exists
+	dirname, err := os.UserHomeDir()
+	if err != nil {
+		return err
+	}
+	configDirPath, err := checkOrCreateConfigDir(dirname, false)
+	if err != nil {
+		return err
+	}
+
+	if configDirPath == "" {
+		return errors.New("config dir is not found")
+	}
+
+	ConfigFilePath = path.Join(configDirPath, "config.json")
+	ok := isFile(ConfigFilePath)
+	if !ok {
+		return errors.New("config file is not found")
+	}
+
+	configFile, err := os.Open(ConfigFilePath)
+	if err != nil {
+		return err
+	}
+
+	defer configFile.Close()
+
+	b, err := io.ReadAll(configFile)
+	if err != nil {
+		return err
+	}
+	var result map[string]interface{}
+	err = json.Unmarshal([]byte(b), &result)
+	if err != nil {
+		return err
+	}
+
+	// Pretty-print the result
+	marshaled, err := json.MarshalIndent(result, "", " ")
+	if err != nil {
+		return err
+	}
+
+	fmt.Printf("Printing config located at %s: \n %s\n", ConfigFilePath, (marshaled))
+
+	return nil
+}

internal/handler/app.go

@@ -0,0 +1,50 @@
+package handler
+
+import (
+	"gosimplenpm/internal/config"
+	"gosimplenpm/internal/middlewares"
+	"gosimplenpm/internal/storage"
+	"net/http"
+	"time"
+
+	"github.com/gorilla/mux"
+	"github.com/sirupsen/logrus"
+)
+
+type Application struct {
+	Logger    *logrus.Logger
+	Conf      config.Config
+	Mux       *mux.Router
+	FSStorage storage.Storage
+}
+
+func (app *Application) Routes() {
+
+	// Need to use UseEncodedPath as shown here https://github.com/gorilla/mux/blob/master/mux.go#L269
+	m := mux.NewRouter().StrictSlash(true).UseEncodedPath()
+
+	m.Use(middlewares.LogMiddleware(app.Logger))
+
+	// main handler
+	m.HandleFunc("/{name}", GetPackage(app.Logger, app.Conf, app.FSStorage)).Methods("GET")
+	m.HandleFunc("/{name}", middlewares.AuthMiddleware(app.Conf)(Publish(app.Logger, app.Conf, app.FSStorage))).Methods("PUT")
+	// tar handlers
+	m.HandleFunc("/{name}/-/{tar}", PackageTarGet(app.Logger, app.Conf, app.FSStorage)).Methods("GET")
+	// tag handlers
+	m.HandleFunc("/-/package/{name}/dist-tags/{tag}", middlewares.AuthMiddleware(app.Conf)(DistTagDelete(app.Logger, app.Conf, app.FSStorage))).Methods("DELETE")
+	m.HandleFunc("/-/package/{name}/dist-tags/{tag}", middlewares.AuthMiddleware(app.Conf)(DistTagPut(app.Logger, app.Conf, app.FSStorage))).Methods("PUT")
+	m.HandleFunc("/-/package/{name}/dist-tags", DistTagGet(app.Logger, app.Conf, app.FSStorage)).Methods("GET")
+	m.NotFoundHandler = http.HandlerFunc(NotFound)
+	app.Mux = m
+}
+
+func (app *Application) Start() error {
+	app.Routes()
+	server := &http.Server{
+		Addr:         app.Conf.IpAddress,
+		Handler:      app.Mux,
+		ReadTimeout:  4 * time.Second,
+		WriteTimeout: 4 * time.Second,
+	}
+	return server.ListenAndServe()
+}

internal/handler/get.go

@@ -0,0 +1,38 @@
+package handler
+
+import (
+	"fmt"
+	"net/http"
+	"net/url"
+
+	"github.com/gorilla/mux"
+	"github.com/sirupsen/logrus"
+
+	"gosimplenpm/internal/config"
+	"gosimplenpm/internal/storage"
+)
+
+func GetPackage(lg *logrus.Logger, cfg config.Config, stg storage.Storage) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		escapedName := mux.Vars(r)["name"]
+		packageName, _ := url.PathUnescape(escapedName)
+		lg.WithFields(logrus.Fields{
+			"function": "get-package",
+		}).Debugf("Package name => %s\n", packageName)
+
+		fileToServe, found, err := stg.GetIndexJsonFromStore(packageName, cfg.RepoDir, lg)
+		if err != nil {
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+			return
+		}
+
+		if !found {
+			ret := fmt.Sprintf("Package not found: %s", packageName)
+			http.Error(w, ret, http.StatusNotFound)
+			return
+		}
+
+		// serve file
+		http.ServeFile(w, r, fileToServe)
+	}
+}

internal/handler/get_test.go

@@ -0,0 +1,218 @@
+package handler
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"gosimplenpm/internal/config"
+	"gosimplenpm/internal/storage"
+	"io"
+	"net/http"
+	"net/http/httptest"
+	"net/url"
+	"os"
+	"testing"
+
+	"github.com/gorilla/mux"
+	"github.com/sirupsen/logrus"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestUnitGet(t *testing.T) {
+	t.Run("return `Not Found` error if package is not found", func(t *testing.T) {
+		req := httptest.NewRequest(http.MethodGet, "/{name}", nil)
+		wrt := httptest.NewRecorder()
+
+		log := &logrus.Logger{
+			Out: os.Stdout,
+			// Level: "DEBUG",
+			Formatter: &logrus.TextFormatter{
+				FullTimestamp:   true,
+				TimestampFormat: "2009-01-02 15:15:15",
+			},
+		}
+
+		cfg := config.Config{
+			RepoDir: "",
+		}
+
+		mfs := &storage.MockFs{}
+		mfs.GetIndexJsonFromStoreFunc = func(packageName string, registryPath string, log *logrus.Logger) (string, bool, error) {
+			return "", false, nil
+		}
+
+		//Hack to try to fake gorilla/mux vars
+		vars := map[string]string{
+			"name": "test-package",
+		}
+
+		req = mux.SetURLVars(req, vars)
+
+		GetPackage(log, cfg, mfs)(wrt, req)
+
+		rs := wrt.Result()
+
+		assert.Equal(t, rs.StatusCode, http.StatusNotFound)
+
+		defer rs.Body.Close()
+		body, err := io.ReadAll(rs.Body)
+		if err != nil {
+			t.Fatal(err)
+		}
+		bytes.TrimSpace(body)
+
+		assert.Equal(t, string(body), "Package not found: test-package\n")
+	})
+
+	t.Run("return `Internal Server` error if package cannot be retrieved", func(t *testing.T) {
+		req := httptest.NewRequest(http.MethodGet, "/test-package", nil)
+		wrt := httptest.NewRecorder()
+
+		log := &logrus.Logger{
+			Out: os.Stdout,
+			// Level: "DEBUG",
+			Formatter: &logrus.TextFormatter{
+				FullTimestamp:   true,
+				TimestampFormat: "2009-01-02 15:15:15",
+			},
+		}
+
+		cfg := config.Config{
+			RepoDir: "",
+		}
+
+		mfs := &storage.MockFs{}
+		mfs.GetIndexJsonFromStoreFunc = func(packageName string, registryPath string, log *logrus.Logger) (string, bool, error) {
+			return "", true, fmt.Errorf("filesystem error")
+		}
+
+		//Hack to try to fake gorilla/mux vars
+		vars := map[string]string{
+			"name": "test-package",
+		}
+
+		req = mux.SetURLVars(req, vars)
+
+		GetPackage(log, cfg, mfs)(wrt, req)
+
+		rs := wrt.Result()
+
+		assert.Equal(t, rs.StatusCode, http.StatusInternalServerError)
+
+		defer rs.Body.Close()
+		body, err := io.ReadAll(rs.Body)
+		if err != nil {
+			t.Fatal(err)
+		}
+		bytes.TrimSpace(body)
+
+		assert.Equal(t, string(body), "filesystem error\n")
+	})
+
+	t.Run("return a file if package is found", func(t *testing.T) {
+		tmpDir := t.TempDir()
+
+		f, err := os.CreateTemp(tmpDir, "foo.json")
+		if err != nil {
+			t.Fatal(err)
+		}
+		defer os.RemoveAll(tmpDir)
+		defer f.Close()
+
+		_, err = f.WriteString("{data: \"test data\"}")
+		if err != nil {
+			t.Fatal(err)
+		}
+
+		req := httptest.NewRequest(http.MethodGet, "/test-oackage", nil)
+		wrt := httptest.NewRecorder()
+
+		log := &logrus.Logger{
+			Out: os.Stdout,
+			// Level: "DEBUG",
+			Formatter: &logrus.TextFormatter{
+				FullTimestamp:   true,
+				TimestampFormat: "2009-01-02 15:15:15",
+			},
+		}
+
+		cfg := config.Config{
+			RepoDir: "",
+		}
+
+		mfs := &storage.MockFs{}
+		mfs.GetIndexJsonFromStoreFunc = func(packageName string, registryPath string, log *logrus.Logger) (string, bool, error) {
+			return f.Name(), true, nil
+		}
+		// mfs.SetRetrieved(true)
+		// mfs.SetFileToServe(f.Name())
+
+		//Hack to try to fake gorilla/mux vars
+		vars := map[string]string{
+			"name": "test-package",
+		}
+
+		req = mux.SetURLVars(req, vars)
+
+		GetPackage(log, cfg, mfs)(wrt, req)
+
+		rs := wrt.Result()
+
+		assert.Equal(t, rs.StatusCode, http.StatusOK)
+
+		defer rs.Body.Close()
+		body, err := io.ReadAll(rs.Body)
+		if err != nil {
+			t.Fatal(err)
+		}
+		bytes.TrimSpace(body)
+
+		assert.Equal(t, string(body), "{data: \"test data\"}")
+	})
+}
+
+func TestIntegrationGet(t *testing.T) {
+	if testing.Short() {
+		t.Skip("Skipping getPackage integration test")
+	}
+
+	token := "0N89nr/hmKXoBzG]R{fKH%YE1X"
+
+	tmpDir := t.TempDir()
+
+	t.Logf("Temp Dir: %s", tmpDir)
+
+	// cpFolders(t, "intestdata/@df", fmt.Sprintf("%s/@df", tmpDir))
+
+	mkDir(t, fmt.Sprintf("%s/@df/simplepackone", tmpDir))
+
+	indexJsonFp := "intestdata/get/index.json"
+	tgzFile := "intestdata/get/simplepackone-1.0.0.tgz"
+
+	cpFile(t, indexJsonFp, fmt.Sprintf("%s/@df/simplepackone/index.json", tmpDir))
+	cpFile(t, tgzFile, fmt.Sprintf("%s/@df/simplepackone/simplepackone-1.0.0.tgz", tmpDir))
+
+	listDir(t, fmt.Sprintf("%s/", tmpDir), true)
+
+	cfg := config.Config{
+		RepoDir: tmpDir,
+		Token:   token,
+	}
+
+	app := newTestApp(t, cfg)
+	app.Routes()
+	ts := newTestServer(t, app.Mux)
+	defer ts.Close()
+
+	code, _, body := ts.get(t, fmt.Sprintf("/%s", url.PathEscape("@df/simplepackone")))
+
+	assert.Equal(t, code, http.StatusOK)
+
+	expected := readTestFile(t, indexJsonFp)
+	var resultExpected map[string]interface{}
+	var resultBody map[string]interface{}
+	json.Unmarshal(expected, &resultExpected)
+	json.Unmarshal(body, &resultBody)
+
+	assert.Equal(t, resultBody, resultExpected)
+}

internal/handler/intestdata/get/index.json

@@ -0,0 +1 @@
+{"_id":"@df/simplepackone","name":"@df/simplepackone","description":"This is a very rough implementation of a private npm registry.","dist-tags":{"latest":"1.0.0"},"time":{"1.0.0":"2023-12-24T11:04:34-05:00","created":"2023-12-24T11:04:34-05:00","modified":"2023-12-24T11:04:34-05:00","unpublished":""},"versions":{"1.0.0":{"name":"@df/simplepackone","version":"1.0.0","description":"This is a very rough implementation of a private npm registry.","main":"index.js","scripts":{"test":"echo \"Error: no test specified\" \u0026\u0026 exit 1"},"license":"MIT","repository":{"type":"","url":"","directory":""},"readme":"# Gosimplenpm\n\nThis is a very rough implementation of a private npm registry.\n\n# Features\n\nTODO...\n\n# Enhancements\n\nTODO...\n\n# Work List\n\nTODO...","readmeFilename":"README.md","_id":"@df/simplepackone@1.0.0","maintainers.omitempty":null,"bugs":{},"bin":null,"engines":{},"_nodeVersion":"16.20.0","_npmVersion":"8.19.4","dist":{"integrity":"sha512-9NI+Kqf+4C8Rr5GPKen8o6hhp/LMMeox96du65v6T+W27irVSsxZP0grBHBFyfd9whDXOoSliRWvYBnGnELlnA==","shasum":"a3974e824557b8e7ba00b87fb4ec51e4d132fff2","tarball":"http://localhost:6000/@df/simplepackone/-/@df/simplepackone-1.0.0.tgz","fileCount":0,"unpackedSize":0},"dependencies":{"eslint":"^7.x","mocha":"^10.x","uuid":"^9.x"}}},"access":"","_attachments":{"@df/simplepackone-1.0.0.tgz":{"content_type":"application/octet-stream","data":"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","length":1075}}}

internal/handler/intestdata/get/package.json

@@ -0,0 +1,16 @@
+{
+  "name": "@df/simplepackone",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "author": "",
+  "license": "MIT",
+  "dependencies": {
+    "eslint": "^7.x",
+    "mocha": "^10.x",
+    "uuid":"^9.x"
+  }
+}

internal/handler/intestdata/publish/normal/index.json

@@ -0,0 +1 @@
+{"_id":"@df/simplepackone","name":"@df/simplepackone","description":"This is a very rough implementation of a private npm registry.","dist-tags":{"latest":"1.0.0"},"time":{"1.0.0":"2023-12-24T11:04:34-05:00","created":"2023-12-24T11:04:34-05:00","modified":"2023-12-24T11:04:34-05:00","unpublished":""},"versions":{"1.0.0":{"name":"@df/simplepackone","version":"1.0.0","description":"This is a very rough implementation of a private npm registry.","main":"index.js","scripts":{"test":"echo \"Error: no test specified\" \u0026\u0026 exit 1"},"license":"MIT","repository":{"type":"","url":"","directory":""},"readme":"# Gosimplenpm\n\nThis is a very rough implementation of a private npm registry.\n\n# Features\n\nTODO...\n\n# Enhancements\n\nTODO...\n\n# Work List\n\nTODO...","readmeFilename":"README.md","_id":"@df/simplepackone@1.0.0","maintainers.omitempty":null,"bugs":{},"bin":null,"engines":{},"_nodeVersion":"16.20.0","_npmVersion":"8.19.4","dist":{"integrity":"sha512-9NI+Kqf+4C8Rr5GPKen8o6hhp/LMMeox96du65v6T+W27irVSsxZP0grBHBFyfd9whDXOoSliRWvYBnGnELlnA==","shasum":"a3974e824557b8e7ba00b87fb4ec51e4d132fff2","tarball":"http://localhost:6000/@df/simplepackone/-/@df/simplepackone-1.0.0.tgz","fileCount":0,"unpackedSize":0},"dependencies":{"eslint":"^7.x","mocha":"^10.x","uuid":"^9.x"}}},"access":"","_attachments":{"@df/simplepackone-1.0.0.tgz":{"content_type":"application/octet-stream","data":"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","length":1075}}}

internal/handler/intestdata/publish/normal/package.json

@@ -0,0 +1,16 @@
+{
+  "name": "@df/simplepackone",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "author": "",
+  "license": "MIT",
+  "dependencies": {
+    "eslint": "^7.x",
+    "mocha": "^10.x",
+    "uuid":"^9.x"
+  }
+}

internal/handler/intestdata/publish/overwrite/index.json

@@ -0,0 +1 @@
+{"_id":"@df/simplepackone","name":"@df/simplepackone","description":"This is a very rough implementation of a private npm registry.","dist-tags":{"latest":"1.9.0"},"time":{"1.0.0":"2023-12-24T11:04:34-05:00","1.9.0":"2023-12-24T13:16:16-05:00","created":"2023-12-24T11:04:34-05:00","modified":"2023-12-24T13:16:16-05:00","unpublished":""},"versions":{"1.0.0":{"name":"@df/simplepackone","version":"1.0.0","description":"This is a very rough implementation of a private npm registry.","main":"index.js","scripts":{"test":"echo \"Error: no test specified\" \u0026\u0026 exit 1"},"license":"MIT","repository":{"type":"","url":"","directory":""},"readme":"# Gosimplenpm\n\nThis is a very rough implementation of a private npm registry.\n\n# Features\n\nTODO...\n\n# Enhancements\n\nTODO...\n\n# Work List\n\nTODO...","readmeFilename":"README.md","_id":"@df/simplepackone@1.0.0","maintainers.omitempty":null,"bugs":{},"bin":null,"engines":{},"_nodeVersion":"16.20.0","_npmVersion":"8.19.4","dist":{"integrity":"sha512-9NI+Kqf+4C8Rr5GPKen8o6hhp/LMMeox96du65v6T+W27irVSsxZP0grBHBFyfd9whDXOoSliRWvYBnGnELlnA==","shasum":"a3974e824557b8e7ba00b87fb4ec51e4d132fff2","tarball":"http://localhost:6000/@df/simplepackone/-/@df/simplepackone-1.0.0.tgz","fileCount":0,"unpackedSize":0},"dependencies":{"eslint":"^7.x","mocha":"^10.x","uuid":"^9.x"}},"1.9.0":{"name":"@df/simplepackone","version":"1.9.0","description":"This is a very rough implementation of a private npm registry.","main":"index.js","scripts":{"test":"echo \"Error: no test specified\" \u0026\u0026 exit 1"},"license":"MIT","repository":{"type":"","url":"","directory":""},"readme":"# Gosimplenpm\n\nThis is a very rough implementation of a private npm registry.\n\n# Features\n\nTODO...\n\n# Enhancements\n\nTODO...\n\n# Work List\n\nTODO...","readmeFilename":"README.md","_id":"@df/simplepackone@1.9.0","maintainers.omitempty":null,"bugs":{},"bin":null,"engines":{},"_nodeVersion":"16.20.0","_npmVersion":"8.19.4","dist":{"integrity":"sha512-TU3UpYnWUeZ4wQmwpMIZGLSPWYkbAP3pOdHmlX2nelmd2zhsCRWHoOLaCyxOrsn6KAmR0M9da5ggHZ9NUnGiCA==","shasum":"047e8445501a52ce658a036f8bff356f8d762762","tarball":"http://localhost:6000/@df%2Fsimplepackone/-/@df%2Fsimplepackone-1.9.0.tgz","fileCount":0,"unpackedSize":0},"dependencies":{"csv":"^6.x","eslint":"^7.x","mocha":"^10.x","uuid":"^9.x"}}},"access":"","_attachments":{"@df/simplepackone-1.9.0.tgz":{"content_type":"application/octet-stream","data":"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","length":1083}}}

internal/handler/intestdata/publish/overwrite/package.json

@@ -0,0 +1,17 @@
+{
+  "name": "@df/simplepackone",
+  "version": "1.9.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "author": "",
+  "license": "MIT",
+  "dependencies": {
+    "eslint": "^7.x",
+    "mocha": "^10.x",
+    "uuid":"^9.x",
+    "csv":"^6.x"
+  }
+}

internal/handler/intestdata/tags/index.json

@@ -0,0 +1 @@
+{"_id":"@df/simplepackone","name":"@df/simplepackone","description":"This is a very rough implementation of a private npm registry.","dist-tags":{"latest":"1.9.0", "pre-alpha":"1.0.0"},"time":{"1.0.0":"2023-12-24T11:04:34-05:00","1.9.0":"2023-12-24T13:16:16-05:00","created":"2023-12-24T11:04:34-05:00","modified":"2023-12-24T13:16:16-05:00","unpublished":""},"versions":{"1.0.0":{"name":"@df/simplepackone","version":"1.0.0","description":"This is a very rough implementation of a private npm registry.","main":"index.js","scripts":{"test":"echo \"Error: no test specified\" \u0026\u0026 exit 1"},"license":"MIT","repository":{"type":"","url":"","directory":""},"readme":"# Gosimplenpm\n\nThis is a very rough implementation of a private npm registry.\n\n# Features\n\nTODO...\n\n# Enhancements\n\nTODO...\n\n# Work List\n\nTODO...","readmeFilename":"README.md","_id":"@df/simplepackone@1.0.0","maintainers.omitempty":null,"bugs":{},"bin":null,"engines":{},"_nodeVersion":"16.20.0","_npmVersion":"8.19.4","dist":{"integrity":"sha512-9NI+Kqf+4C8Rr5GPKen8o6hhp/LMMeox96du65v6T+W27irVSsxZP0grBHBFyfd9whDXOoSliRWvYBnGnELlnA==","shasum":"a3974e824557b8e7ba00b87fb4ec51e4d132fff2","tarball":"http://localhost:6000/@df/simplepackone/-/@df/simplepackone-1.0.0.tgz","fileCount":0,"unpackedSize":0},"dependencies":{"eslint":"^7.x","mocha":"^10.x","uuid":"^9.x"}},"1.9.0":{"name":"@df/simplepackone","version":"1.9.0","description":"This is a very rough implementation of a private npm registry.","main":"index.js","scripts":{"test":"echo \"Error: no test specified\" \u0026\u0026 exit 1"},"license":"MIT","repository":{"type":"","url":"","directory":""},"readme":"# Gosimplenpm\n\nThis is a very rough implementation of a private npm registry.\n\n# Features\n\nTODO...\n\n# Enhancements\n\nTODO...\n\n# Work List\n\nTODO...","readmeFilename":"README.md","_id":"@df/simplepackone@1.9.0","maintainers.omitempty":null,"bugs":{},"bin":null,"engines":{},"_nodeVersion":"16.20.0","_npmVersion":"8.19.4","dist":{"integrity":"sha512-TU3UpYnWUeZ4wQmwpMIZGLSPWYkbAP3pOdHmlX2nelmd2zhsCRWHoOLaCyxOrsn6KAmR0M9da5ggHZ9NUnGiCA==","shasum":"047e8445501a52ce658a036f8bff356f8d762762","tarball":"http://localhost:6000/@df%2Fsimplepackone/-/@df%2Fsimplepackone-1.9.0.tgz","fileCount":0,"unpackedSize":0},"dependencies":{"csv":"^6.x","eslint":"^7.x","mocha":"^10.x","uuid":"^9.x"}}},"access":"","_attachments":{"@df/simplepackone-1.9.0.tgz":{"content_type":"application/octet-stream","data":"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","length":1083}}}

internal/handler/intestdata/tags/package.json

@@ -0,0 +1,17 @@
+{
+  "name": "@df/simplepackone",
+  "version": "1.9.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "author": "",
+  "license": "MIT",
+  "dependencies": {
+    "eslint": "^7.x",
+    "mocha": "^10.x",
+    "uuid":"^9.x",
+    "csv":"^6.x"
+  }
+}

internal/handler/intestdata/tar/index.json

@@ -0,0 +1 @@
+{"_id":"@df/simplepackone","name":"@df/simplepackone","description":"This is a very rough implementation of a private npm registry.","dist-tags":{"latest":"1.0.0"},"time":{"1.0.0":"2023-12-24T11:04:34-05:00","created":"2023-12-24T11:04:34-05:00","modified":"2023-12-24T11:04:34-05:00","unpublished":""},"versions":{"1.0.0":{"name":"@df/simplepackone","version":"1.0.0","description":"This is a very rough implementation of a private npm registry.","main":"index.js","scripts":{"test":"echo \"Error: no test specified\" \u0026\u0026 exit 1"},"license":"MIT","repository":{"type":"","url":"","directory":""},"readme":"# Gosimplenpm\n\nThis is a very rough implementation of a private npm registry.\n\n# Features\n\nTODO...\n\n# Enhancements\n\nTODO...\n\n# Work List\n\nTODO...","readmeFilename":"README.md","_id":"@df/simplepackone@1.0.0","maintainers.omitempty":null,"bugs":{},"bin":null,"engines":{},"_nodeVersion":"16.20.0","_npmVersion":"8.19.4","dist":{"integrity":"sha512-9NI+Kqf+4C8Rr5GPKen8o6hhp/LMMeox96du65v6T+W27irVSsxZP0grBHBFyfd9whDXOoSliRWvYBnGnELlnA==","shasum":"a3974e824557b8e7ba00b87fb4ec51e4d132fff2","tarball":"http://localhost:6000/@df/simplepackone/-/@df/simplepackone-1.0.0.tgz","fileCount":0,"unpackedSize":0},"dependencies":{"eslint":"^7.x","mocha":"^10.x","uuid":"^9.x"}}},"access":"","_attachments":{"@df/simplepackone-1.0.0.tgz":{"content_type":"application/octet-stream","data":"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","length":1075}}}

internal/handler/intestdata/tar/package.json

@@ -0,0 +1,16 @@
+{
+  "name": "@df/simplepackone",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "author": "",
+  "license": "MIT",
+  "dependencies": {
+    "eslint": "^7.x",
+    "mocha": "^10.x",
+    "uuid":"^9.x"
+  }
+}

internal/handler/notfound.go

@@ -0,0 +1,10 @@
+package handler
+
+import (
+	"net/http"
+)
+
+// This handler is executed when the router cannot match any route
+func NotFound(w http.ResponseWriter, r *http.Request) {
+	http.Error(w, "Invalid url", http.StatusBadRequest)
+}

internal/handler/publish.go

@@ -0,0 +1,177 @@
+package handler
+
+import (
+	"encoding/json"
+	"fmt"
+	"gosimplenpm/internal/config"
+	"gosimplenpm/internal/serviceidos"
+	"gosimplenpm/internal/storage"
+	"net/http"
+	"net/url"
+	"path"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/gorilla/mux"
+	"github.com/sirupsen/logrus"
+)
+
+type NPMClientPutRequest struct {
+	Request serviceidos.IndexJson
+}
+
+func Publish(lg *logrus.Logger, cfg config.Config, stg storage.Storage) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		// (1) Parse Json Body
+		// (2) Check if package exists in the folder.
+		// (a) if it does, ckeck if it is the same version. If it is, return error. Else modify index.json from (2)
+		// (b) If it does not, add the latest tag to the new index.json
+
+		escapedName := mux.Vars(r)["name"]
+		packageName, _ := url.PathUnescape(escapedName)
+		lg.WithFields(logrus.Fields{
+			"function": "publish",
+		}).Debugf("Package name => %s\n", packageName)
+
+		var cr NPMClientPutRequest
+		// Parse json body
+		err := json.NewDecoder(r.Body).Decode(&cr.Request)
+
+		if err != nil {
+			lg.WithFields(logrus.Fields{
+				"function": "publish",
+			}).Debugf("Error unmarshaling put request: %+v\n", err)
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+			return
+		}
+
+		// Extract relevant data from index.json
+		fmt.Printf("cRequest => %+v\n", cr)
+		index := 0
+		var tag string
+		var version string
+		var versionData serviceidos.IndexJsonVersions
+		// TODO: Fix this as the order is not guaranteed
+		for key, value := range cr.Request.DistTags {
+			if index == 0 {
+				tag = key
+				version = value
+				break
+			}
+			index++
+		}
+		versionData = cr.Request.Versions[version]
+
+		lg.WithFields(logrus.Fields{
+			"function": "publish",
+		}).Debugf("For version(%s) with tag(%s), versionData => %+v\n", version, tag, versionData)
+
+		// Rewrite the tarball path
+		tarballFileName := strings.Split(versionData.Dist.Tarball, "/-/")[1]
+		tarballFileName, _ = url.PathUnescape(tarballFileName)
+
+		lg.WithFields(logrus.Fields{
+			"function": "publish",
+		}).Debugf("TarballName => %s\n", tarballFileName)
+		// versionData.Dist.Tarball = fmt.Sprintf("file://%s", packageFilePath)
+		versionData.Dist.Tarball = fmt.Sprintf("http://%s/%s/-/%s", r.Host, url.PathEscape(packageName), url.PathEscape(tarballFileName))
+
+		lg.WithFields(logrus.Fields{
+			"function": "publish",
+		}).Debugf("versionData.Dist.Tarball => %s\n", versionData.Dist.Tarball)
+
+		tarBallFile := strings.Split(tarballFileName, "/")[1]
+		packageFilePath := path.Join(cfg.RepoDir, packageName, tarBallFile)
+		lg.WithFields(logrus.Fields{
+			"function": "publish",
+		}).Debugf("PackageFilePath => %s\n", packageFilePath)
+		fmt.Printf("PackageFilePath => %s\n", packageFilePath)
+
+		// Try to get the index.json from the store
+		fileToServe, found, err := stg.GetIndexJsonFromStore(packageName, cfg.RepoDir, lg)
+		if err != nil {
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+			return
+		}
+
+		var jsonFile serviceidos.IndexJson
+		if !found {
+			// new package
+			jsonFile = cr.Request
+			jsonFile.DistTags["latest"] = version
+			curTime := time.Now().Format(time.RFC3339)
+			jsonFile.TimesPackage = map[string]string{
+				version:       curTime,
+				"created":     curTime,
+				"modified":    curTime,
+				"unpublished": "",
+			}
+		} else {
+			// old package
+			err = stg.ReadIndexJson(fileToServe, &jsonFile, lg)
+			if err != nil {
+				http.Error(w, err.Error(), http.StatusInternalServerError)
+				return
+			}
+
+			// Checking that you are not publishing over a pervious published version
+			if jsonFile.Versions[version].Version == version {
+				lg.WithFields(logrus.Fields{
+					"function": "publish",
+				}).Debugf("Version %s of package %s already exists!!\n", version, packageName)
+				http.Error(w, fmt.Sprintf("Version %s of package %s already exists!!\n", version, packageName), http.StatusBadRequest)
+				return
+			}
+
+			// Rewrite attachments
+			jsonFile.DistTags[tag] = version
+			nAttachments := make(map[string]serviceidos.IndexJsonAttachments)
+			nAttachments[fmt.Sprintf("%s-%s.tgz", packageName, version)] = cr.Request.Attachments[fmt.Sprintf("%s-%s.tgz", packageName, version)]
+			jsonFile.Attachments = nAttachments
+
+			// Merge in the new version data
+			jsonFile.Versions[version] = versionData
+
+			// Update the time field
+			timesPackages := jsonFile.TimesPackage
+			curTime := time.Now().Format(time.RFC3339)
+			timesPackages["modified"] = curTime
+			timesPackages[version] = curTime
+		}
+
+		lg.WithFields(logrus.Fields{
+			"function": "publish",
+		}).Debugln("FiletoServe ==> ", fileToServe)
+
+		// Write index.json
+		err = stg.WriteIndexJson(fileToServe, &jsonFile, lg)
+		if err != nil {
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+			return
+		}
+
+		lg.WithFields(logrus.Fields{
+			"function": "publish",
+		}).Debugln("Package path => ", packageFilePath)
+		// Write bundled package
+		packageData := jsonFile.Attachments[fmt.Sprintf("%s-%s.tgz", packageName, version)].Data
+		err = stg.WritePackageToStore(packageFilePath, packageData, lg)
+		if err != nil {
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+			return
+		}
+
+		response := serviceidos.PublishPutResponse{
+			Ok:   true,
+			Name: packageName,
+		}
+		jsonString, _ := json.Marshal(response)
+
+		w.Header().Set("Content-Type", "application/json")
+		w.WriteHeader(http.StatusCreated)
+		w.Header().Set("Content-Length", strconv.Itoa(len(jsonString)))
+		w.Write(jsonString)
+	}
+
+}

internal/handler/publish_test.go

@@ -0,0 +1,715 @@
+package handler
+
+import (
+	"bytes"
+	"fmt"
+	"gosimplenpm/internal/config"
+	"gosimplenpm/internal/serviceidos"
+	"gosimplenpm/internal/storage"
+	"io"
+	"net/http"
+	"net/http/httptest"
+	"net/url"
+	"os"
+	"testing"
+
+	"github.com/gorilla/mux"
+	"github.com/sirupsen/logrus"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestUnitPublish(t *testing.T) {
+	t.Run("return `Internal Server` error if index.json cannot be retrieved", func(t *testing.T) {
+		jsonBody := []byte(
+			`{
+				"_id": "@ookusanya/simplepackone",
+				"name": "@ookusanya/simplepackone",
+				"description": "This is a very rough implementation of a private npm registry.",
+				"dist-tags": {
+				  "latest": "1.2.0"
+				},
+				"versions": {
+				  "1.2.0": {
+					"name": "@ookusanya/simplepackone",
+					"version": "1.2.0",
+					"description": "This is a very rough implementation of a private npm registry.",
+					"main": "index.js",
+					"scripts": {
+					  "test": "echo \"Error: no test specified\" && exit 1"
+					},
+					"license": "MIT",
+					"files": null,
+					"readme": "# Gosimplenpm\n\nThis is a very rough implementation of a private npm registry.\n\n# Features\n\nTODO...\n\n# Enhancements\n\nTODO...\n\n# Work List\n\nTODO...",
+					"_id": "@ookusanya/simplepackone@1.2.0",
+					"_nodeVersion": "16.20.0",
+					"_npmVersion": "8.19.4",
+					"dist": {
+					  "integrity": "sha512-coOiU+ywV/do/+HwK91mfuei9491yfQUedLWjspAjDa58RniJvQNTF/cXDp/sooVdpjgEbCqKVyLOju6C1i3pw==",
+					  "shasum": "1adafdbe8878372c9f4b554bf30d5bfb1b7896c5",
+					  "tarball": "http://localhost:4000/@ookusanya%2Fsimplepackone/-/@ookusanya%2Fsimplepackone-1.2.0.tgz"
+					},
+					"dependencies": {
+					  "eslint": "^7.x",
+					  "mocha": "^10.x",
+					  "uuid": "^9.x"
+					}
+				  }
+				},
+				"access": "",
+				"_attachments": {
+				  "@ookusanya/simplepackone-1.2.0.tgz": {
+					"content_type": "application/octet-stream",
+					"data": "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",
+					"length": 1089
+				  }
+				}
+			  }`,
+		)
+		req := httptest.NewRequest(http.MethodPut, "/{name}", bytes.NewReader(jsonBody))
+		wrt := httptest.NewRecorder()
+
+		lg := &logrus.Logger{
+			Out: os.Stdout,
+			// Level: "DEBUG",
+			Formatter: &logrus.TextFormatter{
+				FullTimestamp:   true,
+				TimestampFormat: "2009-01-02 15:15:15",
+			},
+		}
+
+		cfg := config.Config{
+			RepoDir: "",
+		}
+
+		mfs := &storage.MockFs{}
+		mfs.GetIndexJsonFromStoreFunc = func(packageName string, registryPath string, lg *logrus.Logger) (string, bool, error) {
+			return "", false, fmt.Errorf("Filesystem error")
+		}
+
+		vars := map[string]string{
+			"name": "@ookusanya%2Fsimplepackone",
+		}
+
+		req = mux.SetURLVars(req, vars)
+
+		Publish(lg, cfg, mfs)(wrt, req)
+
+		rs := wrt.Result()
+
+		assert.Equal(t, rs.StatusCode, http.StatusInternalServerError)
+
+		defer rs.Body.Close()
+		body, err := io.ReadAll(rs.Body)
+		if err != nil {
+			t.Fatal(err)
+		}
+		bytes.TrimSpace(body)
+
+		assert.Equal(t, string(body), "Filesystem error\n")
+	})
+
+	t.Run("return `Internal Server` error if index.json cannot be decoded", func(t *testing.T) {
+		jsonBody := []byte(
+			`{
+				"_id": "@ookusanya/simplepackone",
+				"name": "@ookusanya/simplepackone",
+				"description": "This is a very rough implementation of a private npm registry.",
+				"dist-tags": {
+				  "latest": "1.2.0"
+				},
+				"versions": {
+				  "1.2.0": {
+					"name": "@ookusanya/simplepackone",
+					"version": "1.2.0",
+					"description": "This is a very rough implementation of a private npm registry.",
+					"main": "index.js",
+					"scripts": {
+					  "test": "echo \"Error: no test specified\" && exit 1"
+					},
+					"license": "MIT",
+					"files": null,
+					"readme": "# Gosimplenpm\n\nThis is a very rough implementation of a private npm registry.\n\n# Features\n\nTODO...\n\n# Enhancements\n\nTODO...\n\n# Work List\n\nTODO...",
+					"_id": "@ookusanya/simplepackone@1.2.0",
+					"_nodeVersion": "16.20.0",
+					"_npmVersion": "8.19.4",
+					"dist": {
+					  "integrity": "sha512-coOiU+ywV/do/+HwK91mfuei9491yfQUedLWjspAjDa58RniJvQNTF/cXDp/sooVdpjgEbCqKVyLOju6C1i3pw==",
+					  "shasum": "1adafdbe8878372c9f4b554bf30d5bfb1b7896c5",
+					  "tarball": "http://localhost:4000/@ookusanya%2Fsimplepackone/-/@ookusanya%2Fsimplepackone-1.2.0.tgz"
+					},
+					"dependencies": {
+					  "eslint": "^7.x",
+					  "mocha": "^10.x",
+					  "uuid": "^9.x"
+					}
+				  }
+				},
+				"access": "",
+				"_attachments": {
+				  "@ookusanya/simplepackone-1.2.0.tgz": {
+					"content_type": "application/octet-stream",
+					"data": "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",
+					"length": 1089
+				  }
+				}
+			  }`,
+		)
+		req := httptest.NewRequest(http.MethodPut, "/{name}", bytes.NewReader(jsonBody))
+		wrt := httptest.NewRecorder()
+
+		lg := &logrus.Logger{
+			Out: os.Stdout,
+			// Level: "DEBUG",
+			Formatter: &logrus.TextFormatter{
+				FullTimestamp:   true,
+				TimestampFormat: "2009-01-02 15:15:15",
+			},
+		}
+
+		cfg := config.Config{
+			RepoDir: "",
+		}
+
+		mfs := &storage.MockFs{}
+		mfs.GetIndexJsonFromStoreFunc = func(packageName string, registryPath string, lg *logrus.Logger) (string, bool, error) {
+			return string(jsonBody), true, nil
+		}
+		mfs.ReadIndexJsonFunc = func(fPath string, res *serviceidos.IndexJson, lg *logrus.Logger) error {
+			return fmt.Errorf("Filesystem error")
+		}
+
+		vars := map[string]string{
+			"name": "@ookusanya%2Fsimplepackone",
+		}
+
+		req = mux.SetURLVars(req, vars)
+
+		Publish(lg, cfg, mfs)(wrt, req)
+
+		rs := wrt.Result()
+
+		assert.Equal(t, rs.StatusCode, http.StatusInternalServerError)
+
+		defer rs.Body.Close()
+		body, err := io.ReadAll(rs.Body)
+		if err != nil {
+			t.Fatal(err)
+		}
+		bytes.TrimSpace(body)
+
+		assert.Equal(t, string(body), "Filesystem error\n")
+	})
+
+	t.Run("return `Bad Request` error if version to publish already exists", func(t *testing.T) {
+		jsonBody := []byte(
+			`{
+				"_id": "@ookusanya/simplepackone",
+				"name": "@ookusanya/simplepackone",
+				"description": "This is a very rough implementation of a private npm registry.",
+				"dist-tags": {
+				  "latest": "1.2.0"
+				},
+				"versions": {
+				  "1.2.0": {
+					"name": "@ookusanya/simplepackone",
+					"version": "1.2.0",
+					"description": "This is a very rough implementation of a private npm registry.",
+					"main": "index.js",
+					"scripts": {
+					  "test": "echo \"Error: no test specified\" && exit 1"
+					},
+					"license": "MIT",
+					"files": null,
+					"readme": "# Gosimplenpm\n\nThis is a very rough implementation of a private npm registry.\n\n# Features\n\nTODO...\n\n# Enhancements\n\nTODO...\n\n# Work List\n\nTODO...",
+					"_id": "@ookusanya/simplepackone@1.2.0",
+					"_nodeVersion": "16.20.0",
+					"_npmVersion": "8.19.4",
+					"dist": {
+					  "integrity": "sha512-coOiU+ywV/do/+HwK91mfuei9491yfQUedLWjspAjDa58RniJvQNTF/cXDp/sooVdpjgEbCqKVyLOju6C1i3pw==",
+					  "shasum": "1adafdbe8878372c9f4b554bf30d5bfb1b7896c5",
+					  "tarball": "http://localhost:4000/@ookusanya%2Fsimplepackone/-/@ookusanya%2Fsimplepackone-1.2.0.tgz"
+					},
+					"dependencies": {
+					  "eslint": "^7.x",
+					  "mocha": "^10.x",
+					  "uuid": "^9.x"
+					}
+				  }
+				},
+				"access": "",
+				"_attachments": {
+				  "@ookusanya/simplepackone-1.2.0.tgz": {
+					"content_type": "application/octet-stream",
+					"data": "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",
+					"length": 1089
+				  }
+				}
+			  }`,
+		)
+		req := httptest.NewRequest(http.MethodPut, "/{name}", bytes.NewReader(jsonBody))
+		wrt := httptest.NewRecorder()
+
+		lg := &logrus.Logger{
+			Out: os.Stdout,
+			// Level: "DEBUG",
+			Formatter: &logrus.TextFormatter{
+				FullTimestamp:   true,
+				TimestampFormat: "2009-01-02 15:15:15",
+			},
+		}
+
+		cfg := config.Config{
+			RepoDir: "",
+		}
+
+		mfs := &storage.MockFs{}
+		mfs.GetIndexJsonFromStoreFunc = func(packageName string, registryPath string, lg *logrus.Logger) (string, bool, error) {
+			return string(jsonBody), true, nil
+		}
+		mfs.ReadIndexJsonFunc = func(fPath string, res *serviceidos.IndexJson, lg *logrus.Logger) error {
+			temp := serviceidos.IndexJson{
+				Versions: map[string]serviceidos.IndexJsonVersions{
+					"1.2.0": {
+						Version: "1.2.0",
+						Name:    "@ookusanya/simplepackone",
+					},
+				},
+			}
+			*res = temp
+			return nil
+		}
+		mfs.WriteIndexJsonFunc = func(fPath string, res *serviceidos.IndexJson, lg *logrus.Logger) error {
+			return fmt.Errorf("Filesystem error")
+		}
+
+		vars := map[string]string{
+			"name": "@ookusanya%2Fsimplepackone",
+		}
+
+		req = mux.SetURLVars(req, vars)
+
+		Publish(lg, cfg, mfs)(wrt, req)
+
+		rs := wrt.Result()
+
+		assert.Equal(t, rs.StatusCode, http.StatusBadRequest)
+
+		defer rs.Body.Close()
+		body, err := io.ReadAll(rs.Body)
+		if err != nil {
+			t.Fatal(err)
+		}
+		bytes.TrimSpace(body)
+
+		assert.Equal(t, string(body), "Version 1.2.0 of package @ookusanya/simplepackone already exists!!\n\n")
+	})
+
+	t.Run("return `Internal Server` error if writing index.json fails", func(t *testing.T) {
+		jsonBody := []byte(
+			`{
+				"_id": "@ookusanya/simplepackone",
+				"name": "@ookusanya/simplepackone",
+				"description": "This is a very rough implementation of a private npm registry.",
+				"dist-tags": {
+				  "latest": "1.3.0"
+				},
+				"versions": {
+				  "1.3.0": {
+					"name": "@ookusanya/simplepackone",
+					"version": "1.3.0",
+					"description": "This is a very rough implementation of a private npm registry.",
+					"main": "index.js",
+					"scripts": {
+					  "test": "echo \"Error: no test specified\" && exit 1"
+					},
+					"license": "MIT",
+					"files": null,
+					"readme": "# Gosimplenpm\n\nThis is a very rough implementation of a private npm registry.\n\n# Features\n\nTODO...\n\n# Enhancements\n\nTODO...\n\n# Work List\n\nTODO...",
+					"_id": "@ookusanya/simplepackone@1.2.0",
+					"_nodeVersion": "16.20.0",
+					"_npmVersion": "8.19.4",
+					"dist": {
+					  "integrity": "sha512-coOiU+ywV/do/+HwK91mfuei9491yfQUedLWjspAjDa58RniJvQNTF/cXDp/sooVdpjgEbCqKVyLOju6C1i3pw==",
+					  "shasum": "1adafdbe8878372c9f4b554bf30d5bfb1b7896c5",
+					  "tarball": "http://localhost:4000/@ookusanya%2Fsimplepackone/-/@ookusanya%2Fsimplepackone-1.2.0.tgz"
+					},
+					"dependencies": {
+					  "eslint": "^7.x",
+					  "mocha": "^10.x",
+					  "uuid": "^9.x"
+					}
+				  }
+				},
+				"access": "",
+				"_attachments": {
+				  "@ookusanya/simplepackone-1.3.0.tgz": {
+					"content_type": "application/octet-stream",
+					"data": "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",
+					"length": 1089
+				  }
+				}
+			  }`,
+		)
+		req := httptest.NewRequest(http.MethodPut, "/{name}", bytes.NewReader(jsonBody))
+		wrt := httptest.NewRecorder()
+
+		lg := &logrus.Logger{
+			Out: os.Stdout,
+			// Level: "DEBUG",
+			Formatter: &logrus.TextFormatter{
+				FullTimestamp:   true,
+				TimestampFormat: "2009-01-02 15:15:15",
+			},
+		}
+
+		cfg := config.Config{
+			RepoDir: "",
+		}
+
+		mfs := &storage.MockFs{}
+		mfs.GetIndexJsonFromStoreFunc = func(packageName string, registryPath string, lg *logrus.Logger) (string, bool, error) {
+			return string(jsonBody), true, nil
+		}
+		mfs.ReadIndexJsonFunc = func(fPath string, res *serviceidos.IndexJson, lg *logrus.Logger) error {
+			temp := serviceidos.IndexJson{
+				Versions: map[string]serviceidos.IndexJsonVersions{
+					"1.2.0": {
+						Version: "1.2.0",
+						Name:    "@ookusanya/simplepackone",
+					},
+				},
+				DistTags: map[string]string{
+					"latest": "1.2.0",
+				},
+				TimesPackage: map[string]string{
+					"modified": "",
+					"created":  "",
+				},
+			}
+			*res = temp
+			return nil
+		}
+		mfs.WriteIndexJsonFunc = func(fPath string, res *serviceidos.IndexJson, lg *logrus.Logger) error {
+			return fmt.Errorf("Filesystem error")
+		}
+
+		vars := map[string]string{
+			"name": "@ookusanya%2Fsimplepackone",
+		}
+
+		req = mux.SetURLVars(req, vars)
+
+		Publish(lg, cfg, mfs)(wrt, req)
+
+		rs := wrt.Result()
+
+		assert.Equal(t, rs.StatusCode, http.StatusInternalServerError)
+
+		defer rs.Body.Close()
+		body, err := io.ReadAll(rs.Body)
+		if err != nil {
+			t.Fatal(err)
+		}
+		bytes.TrimSpace(body)
+
+		assert.Equal(t, string(body), "Filesystem error\n")
+	})
+
+	t.Run("return `Internal Server` error if writing tar package fails", func(t *testing.T) {
+		jsonBody := []byte(
+			`{
+				"_id": "@ookusanya/simplepackone",
+				"name": "@ookusanya/simplepackone",
+				"description": "This is a very rough implementation of a private npm registry.",
+				"dist-tags": {
+				  "latest": "1.3.0"
+				},
+				"versions": {
+				  "1.3.0": {
+					"name": "@ookusanya/simplepackone",
+					"version": "1.3.0",
+					"description": "This is a very rough implementation of a private npm registry.",
+					"main": "index.js",
+					"scripts": {
+					  "test": "echo \"Error: no test specified\" && exit 1"
+					},
+					"license": "MIT",
+					"files": null,
+					"readme": "# Gosimplenpm\n\nThis is a very rough implementation of a private npm registry.\n\n# Features\n\nTODO...\n\n# Enhancements\n\nTODO...\n\n# Work List\n\nTODO...",
+					"_id": "@ookusanya/simplepackone@1.2.0",
+					"_nodeVersion": "16.20.0",
+					"_npmVersion": "8.19.4",
+					"dist": {
+					  "integrity": "sha512-coOiU+ywV/do/+HwK91mfuei9491yfQUedLWjspAjDa58RniJvQNTF/cXDp/sooVdpjgEbCqKVyLOju6C1i3pw==",
+					  "shasum": "1adafdbe8878372c9f4b554bf30d5bfb1b7896c5",
+					  "tarball": "http://localhost:4000/@ookusanya%2Fsimplepackone/-/@ookusanya%2Fsimplepackone-1.2.0.tgz"
+					},
+					"dependencies": {
+					  "eslint": "^7.x",
+					  "mocha": "^10.x",
+					  "uuid": "^9.x"
+					}
+				  }
+				},
+				"access": "",
+				"_attachments": {
+				  "@ookusanya/simplepackone-1.3.0.tgz": {
+					"content_type": "application/octet-stream",
+					"data": "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",
+					"length": 1089
+				  }
+				}
+			  }`,
+		)
+		req := httptest.NewRequest(http.MethodPut, "/{name}", bytes.NewReader(jsonBody))
+		wrt := httptest.NewRecorder()
+
+		lg := &logrus.Logger{
+			Out: os.Stdout,
+			// Level: "DEBUG",
+			Formatter: &logrus.TextFormatter{
+				FullTimestamp:   true,
+				TimestampFormat: "2009-01-02 15:15:15",
+			},
+		}
+
+		cfg := config.Config{
+			RepoDir: "",
+		}
+
+		mfs := &storage.MockFs{}
+		mfs.GetIndexJsonFromStoreFunc = func(packageName string, registryPath string, lg *logrus.Logger) (string, bool, error) {
+			return string(jsonBody), true, nil
+		}
+		mfs.ReadIndexJsonFunc = func(fPath string, res *serviceidos.IndexJson, lg *logrus.Logger) error {
+			temp := serviceidos.IndexJson{
+				Versions: map[string]serviceidos.IndexJsonVersions{
+					"1.2.0": {
+						Version: "1.2.0",
+						Name:    "@ookusanya/simplepackone",
+					},
+				},
+				DistTags: map[string]string{
+					"latest": "1.2.0",
+				},
+				TimesPackage: map[string]string{
+					"modified": "",
+					"created":  "",
+				},
+			}
+			*res = temp
+			return nil
+		}
+		mfs.WriteIndexJsonFunc = func(fPath string, res *serviceidos.IndexJson, lg *logrus.Logger) error {
+			return nil
+		}
+		mfs.WritePackageToStoreFunc = func(fPath string, data string, lg *logrus.Logger) error {
+			return fmt.Errorf("Filesystem error")
+		}
+
+		vars := map[string]string{
+			"name": "@ookusanya%2Fsimplepackone",
+		}
+
+		req = mux.SetURLVars(req, vars)
+
+		Publish(lg, cfg, mfs)(wrt, req)
+
+		rs := wrt.Result()
+
+		assert.Equal(t, rs.StatusCode, http.StatusInternalServerError)
+
+		defer rs.Body.Close()
+		body, err := io.ReadAll(rs.Body)
+		if err != nil {
+			t.Fatal(err)
+		}
+		bytes.TrimSpace(body)
+
+		assert.Equal(t, string(body), "Filesystem error\n")
+	})
+
+	t.Run("return 201 Created if publish is successful", func(t *testing.T) {
+		jsonBody := []byte(
+			`{
+				"_id": "@ookusanya/simplepackone",
+				"name": "@ookusanya/simplepackone",
+				"description": "This is a very rough implementation of a private npm registry.",
+				"dist-tags": {
+				  "latest": "1.3.0"
+				},
+				"versions": {
+				  "1.3.0": {
+					"name": "@ookusanya/simplepackone",
+					"version": "1.3.0",
+					"description": "This is a very rough implementation of a private npm registry.",
+					"main": "index.js",
+					"scripts": {
+					  "test": "echo \"Error: no test specified\" && exit 1"
+					},
+					"license": "MIT",
+					"files": null,
+					"readme": "# Gosimplenpm\n\nThis is a very rough implementation of a private npm registry.\n\n# Features\n\nTODO...\n\n# Enhancements\n\nTODO...\n\n# Work List\n\nTODO...",
+					"_id": "@ookusanya/simplepackone@1.2.0",
+					"_nodeVersion": "16.20.0",
+					"_npmVersion": "8.19.4",
+					"dist": {
+					  "integrity": "sha512-coOiU+ywV/do/+HwK91mfuei9491yfQUedLWjspAjDa58RniJvQNTF/cXDp/sooVdpjgEbCqKVyLOju6C1i3pw==",
+					  "shasum": "1adafdbe8878372c9f4b554bf30d5bfb1b7896c5",
+					  "tarball": "http://localhost:4000/@ookusanya%2Fsimplepackone/-/@ookusanya%2Fsimplepackone-1.2.0.tgz"
+					},
+					"dependencies": {
+					  "eslint": "^7.x",
+					  "mocha": "^10.x",
+					  "uuid": "^9.x"
+					}
+				  }
+				},
+				"access": "",
+				"_attachments": {
+				  "@ookusanya/simplepackone-1.3.0.tgz": {
+					"content_type": "application/octet-stream",
+					"data": "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",
+					"length": 1089
+				  }
+				}
+			  }`,
+		)
+		req := httptest.NewRequest(http.MethodPut, "/{name}", bytes.NewReader(jsonBody))
+		wrt := httptest.NewRecorder()
+
+		lg := &logrus.Logger{
+			Out: os.Stdout,
+			// Level: "DEBUG",
+			Formatter: &logrus.TextFormatter{
+				FullTimestamp:   true,
+				TimestampFormat: "2009-01-02 15:15:15",
+			},
+		}
+
+		cfg := config.Config{
+			RepoDir: "",
+		}
+
+		mfs := &storage.MockFs{}
+		mfs.GetIndexJsonFromStoreFunc = func(packageName string, registryPath string, lg *logrus.Logger) (string, bool, error) {
+			return string(jsonBody), false, nil
+		}
+		mfs.WriteIndexJsonFunc = func(fPath string, res *serviceidos.IndexJson, lg *logrus.Logger) error {
+			return nil
+		}
+		mfs.WritePackageToStoreFunc = func(fPath string, data string, lg *logrus.Logger) error {
+			return nil
+		}
+
+		vars := map[string]string{
+			"name": "@ookusanya%2Fsimplepackone",
+		}
+
+		req = mux.SetURLVars(req, vars)
+
+		Publish(lg, cfg, mfs)(wrt, req)
+
+		rs := wrt.Result()
+
+		assert.Equal(t, rs.StatusCode, http.StatusCreated)
+
+		defer rs.Body.Close()
+		body, err := io.ReadAll(rs.Body)
+		if err != nil {
+			t.Fatal(err)
+		}
+		bytes.TrimSpace(body)
+
+		assert.Equal(t, string(body), "{\"ok\":true,\"package_name\":\"@ookusanya/simplepackone\"}")
+	})
+}
+
+func TestIntegrationPublishNormal(t *testing.T) {
+	if testing.Short() {
+		t.Skip("Skipping publishPackage integration test")
+	}
+
+	token := "0N89nr/hmKXoBzG]R{fKH%YE1X"
+
+	tmpDir := t.TempDir()
+
+	t.Logf("Temp Dir: %s", tmpDir)
+
+	indexJsonFp := "intestdata/publish/normal/index.json"
+
+	isEmpty := IsDirEmpty(t, tmpDir)
+	assert.Equal(t, true, isEmpty)
+
+	cfg := config.Config{
+		RepoDir: tmpDir,
+		Token:   token,
+	}
+
+	app := newTestApp(t, cfg)
+	app.Routes()
+	ts := newTestServer(t, app.Mux)
+	defer ts.Close()
+
+	dataToSend := readTestFile(t, indexJsonFp)
+	code, _, body := ts.put(t, fmt.Sprintf("/%s", url.PathEscape("@df/simplepackone")), token, string(dataToSend))
+
+	assert.Equal(t, code, http.StatusCreated)
+
+	isEmpty = IsDirEmpty(t, tmpDir)
+	assert.Equal(t, false, isEmpty)
+
+	// t.Logf("Body ==> %s", string(body))
+
+	filePaths := listDir(t, tmpDir, false)
+	assert.Equal(t, true, containsSub(filePaths, "index.json"))
+	assert.Equal(t, true, containsSub(filePaths, "simplepackone-1.0.0"))
+
+	assert.NotEmpty(t, string(body))
+}
+
+func TestIntegrationPublishOverwrite(t *testing.T) {
+	if testing.Short() {
+		t.Skip("Skipping publishPackage integration test")
+	}
+
+	token := "0N89nr/hmKXoBzG]R{fKH%YE1X"
+
+	tmpDir := t.TempDir()
+
+	t.Logf("Temp Dir: %s", tmpDir)
+
+	// Copy initial package
+	indexJsonFp := "intestdata/publish/normal/index.json"
+	tgzFp := "intestdata/get/simplepackone-1.0.0.tgz"
+	mkDir(t, fmt.Sprintf("%s/@df/simplepackone", tmpDir))
+	cpFile(t, indexJsonFp, fmt.Sprintf("%s/@df/simplepackone/index.json", tmpDir))
+	cpFile(t, tgzFp, fmt.Sprintf("%s/@df/simplepackone/simplepackone-1.0.0.tgz", tmpDir))
+
+	isEmpty := IsDirEmpty(t, tmpDir)
+	assert.Equal(t, false, isEmpty)
+
+	indexJsonFp = "intestdata/publish/overwrite/index.json"
+
+	cfg := config.Config{
+		RepoDir: tmpDir,
+		Token:   token,
+	}
+
+	app := newTestApp(t, cfg)
+	app.Routes()
+	ts := newTestServer(t, app.Mux)
+	defer ts.Close()
+
+	dataToSend := readTestFile(t, indexJsonFp)
+	code, _, body := ts.put(t, fmt.Sprintf("/%s", url.PathEscape("@df/simplepackone")), token, string(dataToSend))
+
+	assert.Equal(t, code, http.StatusCreated)
+
+	filePaths := listDir(t, tmpDir, false)
+	assert.Equal(t, true, containsSub(filePaths, "index.json"))
+	assert.Equal(t, true, containsSub(filePaths, "simplepackone-1.0.0"))
+	assert.Equal(t, true, containsSub(filePaths, "simplepackone-1.9.0"))
+
+	assert.NotEmpty(t, string(body))
+}

internal/handler/tagdelete.go

@@ -0,0 +1,84 @@
+package handler
+
+import (
+	"encoding/json"
+	"fmt"
+	"gosimplenpm/internal/config"
+	"gosimplenpm/internal/serviceidos"
+	"gosimplenpm/internal/storage"
+	"net/http"
+	"net/url"
+	"strconv"
+
+	"github.com/gorilla/mux"
+	"github.com/sirupsen/logrus"
+	"golang.org/x/mod/semver"
+)
+
+func DistTagDelete(lg *logrus.Logger, cfg config.Config, stg storage.Storage) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		escapedName := mux.Vars(r)["name"]
+		packageName, _ := url.PathUnescape(escapedName)
+		lg.WithFields(logrus.Fields{
+			"function": "dist-tags-delete",
+		}).Debugf("Package name => %s\n", packageName)
+
+		escapedName = mux.Vars(r)["tag"]
+		tag, _ := url.PathUnescape(escapedName)
+		lg.WithFields(logrus.Fields{
+			"function": "dist-tags-delete",
+		}).Debugf("Tag => %s\n", tag)
+
+		if semver.IsValid(tag) {
+			http.Error(w, fmt.Sprintf("Tag %s cannot be a semver version", tag), http.StatusBadRequest)
+			return
+		}
+
+		if tag == "latest" {
+			http.Error(w, "Cannot delete the latest tag", http.StatusBadRequest)
+			return
+		}
+
+		fileToServe, found, err := stg.GetIndexJsonFromStore(packageName, cfg.RepoDir, lg)
+		if err != nil {
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+			return
+		}
+
+		if !found {
+			ret := fmt.Sprintf("Package not found: %s", packageName)
+			http.Error(w, ret, http.StatusNotFound)
+			return
+		}
+
+		var jsonFile serviceidos.IndexJson
+		err = stg.ReadIndexJson(fileToServe, &jsonFile, lg)
+		if err != nil {
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+			return
+		}
+
+		delete(jsonFile.DistTags, tag)
+
+		// Write index.json
+		err = stg.WriteIndexJson(fileToServe, &jsonFile, lg)
+		if err != nil {
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+			return
+		}
+
+		distTagsString, _ := json.Marshal(jsonFile.DistTags)
+
+		response := serviceidos.TagPutResponse{
+			Ok:       true,
+			ID:       escapedName,
+			DistTags: string(distTagsString),
+		}
+
+		jsonString, _ := json.Marshal(response)
+
+		w.Header().Set("Content-Type", "application/json")
+		w.Header().Set("Content-Length", strconv.Itoa(len(jsonString)))
+		w.Write(jsonString)
+	}
+}

internal/handler/tagdelete_test.go

@@ -0,0 +1,429 @@
+package handler
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"gosimplenpm/internal/config"
+	"gosimplenpm/internal/serviceidos"
+	"gosimplenpm/internal/storage"
+	"io"
+	"net/http"
+	"net/http/httptest"
+	"net/url"
+	"os"
+	"testing"
+
+	"github.com/gorilla/mux"
+	"github.com/sirupsen/logrus"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestUnitTagDelete(t *testing.T) {
+	t.Run("return `Bad request` error if tag is semver", func(t *testing.T) {
+		req := httptest.NewRequest(http.MethodDelete, "/-/package/{name}/dist-tags/{tag}", nil)
+		wrt := httptest.NewRecorder()
+
+		lg := &logrus.Logger{
+			Out: os.Stdout,
+			// Level: "DEBUG",
+			Formatter: &logrus.TextFormatter{
+				FullTimestamp:   true,
+				TimestampFormat: "2009-01-02 15:15:15",
+			},
+		}
+
+		cfg := config.Config{
+			RepoDir: "",
+		}
+
+		mfs := &storage.MockFs{}
+
+		tag := "v1.0.0"
+
+		//Hack to try to fake gorilla/mux vars
+		vars := map[string]string{
+			"name": "test-package",
+			"tag":  tag,
+		}
+
+		req = mux.SetURLVars(req, vars)
+
+		DistTagDelete(lg, cfg, mfs)(wrt, req)
+
+		rs := wrt.Result()
+
+		assert.Equal(t, rs.StatusCode, http.StatusBadRequest)
+
+		defer rs.Body.Close()
+		body, err := io.ReadAll(rs.Body)
+		if err != nil {
+			t.Fatal(err)
+		}
+		bytes.TrimSpace(body)
+
+		assert.Equal(t, string(body), fmt.Sprintf("Tag %s cannot be a semver version\n", tag))
+	})
+
+	t.Run("return `Bad request` error if tag is latest", func(t *testing.T) {
+		req := httptest.NewRequest(http.MethodDelete, "/-/package/{name}/dist-tags/{tag}", nil)
+		wrt := httptest.NewRecorder()
+
+		lg := &logrus.Logger{
+			Out: os.Stdout,
+			// Level: "DEBUG",
+			Formatter: &logrus.TextFormatter{
+				FullTimestamp:   true,
+				TimestampFormat: "2009-01-02 15:15:15",
+			},
+		}
+
+		cfg := config.Config{
+			RepoDir: "",
+		}
+
+		mfs := &storage.MockFs{}
+
+		tag := "latest"
+
+		//Hack to try to fake gorilla/mux vars
+		vars := map[string]string{
+			"name": "test-package",
+			"tag":  tag,
+		}
+
+		req = mux.SetURLVars(req, vars)
+
+		DistTagDelete(lg, cfg, mfs)(wrt, req)
+
+		rs := wrt.Result()
+
+		assert.Equal(t, rs.StatusCode, http.StatusBadRequest)
+
+		defer rs.Body.Close()
+		body, err := io.ReadAll(rs.Body)
+		if err != nil {
+			t.Fatal(err)
+		}
+		bytes.TrimSpace(body)
+
+		assert.Equal(t, string(body), "Cannot delete the latest tag\n")
+	})
+
+	t.Run("return `Internal Server` error if index json cannot be retrieved", func(t *testing.T) {
+		req := httptest.NewRequest(http.MethodDelete, "/-/package/{name}/dist-tags/{tag}", nil)
+		wrt := httptest.NewRecorder()
+
+		lg := &logrus.Logger{
+			Out: os.Stdout,
+			// Level: "DEBUG",
+			Formatter: &logrus.TextFormatter{
+				FullTimestamp:   true,
+				TimestampFormat: "2009-01-02 15:15:15",
+			},
+		}
+
+		cfg := config.Config{
+			RepoDir: "",
+		}
+
+		mfs := &storage.MockFs{}
+		mfs.GetIndexJsonFromStoreFunc = func(packageName string, registryPath string, lg *logrus.Logger) (string, bool, error) {
+			return "", false, fmt.Errorf("Filesystem error")
+		}
+
+		tag := "current"
+
+		//Hack to try to fake gorilla/mux vars
+		vars := map[string]string{
+			"name": "test-package",
+			"tag":  tag,
+		}
+
+		req = mux.SetURLVars(req, vars)
+
+		DistTagDelete(lg, cfg, mfs)(wrt, req)
+
+		rs := wrt.Result()
+
+		assert.Equal(t, rs.StatusCode, http.StatusInternalServerError)
+
+		defer rs.Body.Close()
+		body, err := io.ReadAll(rs.Body)
+		if err != nil {
+			t.Fatal(err)
+		}
+		bytes.TrimSpace(body)
+
+		assert.Equal(t, string(body), "Filesystem error\n")
+	})
+
+	t.Run("return `Not found` error if package cannot be retrieved", func(t *testing.T) {
+		req := httptest.NewRequest(http.MethodDelete, "/-/package/{name}/dist-tags/{tag}", nil)
+		wrt := httptest.NewRecorder()
+
+		lg := &logrus.Logger{
+			Out: os.Stdout,
+			// Level: "DEBUG",
+			Formatter: &logrus.TextFormatter{
+				FullTimestamp:   true,
+				TimestampFormat: "2009-01-02 15:15:15",
+			},
+		}
+
+		cfg := config.Config{
+			RepoDir: "",
+		}
+
+		mfs := &storage.MockFs{}
+		mfs.GetIndexJsonFromStoreFunc = func(packageName string, registryPath string, lg *logrus.Logger) (string, bool, error) {
+			return "", false, nil
+		}
+
+		tag := "current"
+
+		//Hack to try to fake gorilla/mux vars
+		vars := map[string]string{
+			"name": "test-package",
+			"tag":  tag,
+		}
+
+		req = mux.SetURLVars(req, vars)
+
+		DistTagDelete(lg, cfg, mfs)(wrt, req)
+
+		rs := wrt.Result()
+
+		assert.Equal(t, rs.StatusCode, http.StatusNotFound)
+
+		defer rs.Body.Close()
+		body, err := io.ReadAll(rs.Body)
+		if err != nil {
+			t.Fatal(err)
+		}
+		bytes.TrimSpace(body)
+
+		assert.Equal(t, string(body), "Package not found: test-package\n")
+	})
+
+	t.Run("return `Internal Server` error if package.json cannot be parsed", func(t *testing.T) {
+		req := httptest.NewRequest(http.MethodDelete, "/-/package/{name}/dist-tags/{tag}", nil)
+		wrt := httptest.NewRecorder()
+
+		lg := &logrus.Logger{
+			Out: os.Stdout,
+			// Level: "DEBUG",
+			Formatter: &logrus.TextFormatter{
+				FullTimestamp:   true,
+				TimestampFormat: "2009-01-02 15:15:15",
+			},
+		}
+
+		cfg := config.Config{
+			RepoDir: "",
+		}
+
+		mfs := &storage.MockFs{}
+		mfs.GetIndexJsonFromStoreFunc = func(packageName string, registryPath string, lg *logrus.Logger) (string, bool, error) {
+			return "", true, nil
+		}
+		mfs.ReadIndexJsonFunc = func(fPath string, res *serviceidos.IndexJson, lg *logrus.Logger) error {
+			return fmt.Errorf("Parsing failed")
+		}
+
+		tag := "current"
+
+		//Hack to try to fake gorilla/mux vars
+		vars := map[string]string{
+			"name": "test-package",
+			"tag":  tag,
+		}
+
+		req = mux.SetURLVars(req, vars)
+
+		DistTagDelete(lg, cfg, mfs)(wrt, req)
+
+		rs := wrt.Result()
+
+		assert.Equal(t, rs.StatusCode, http.StatusInternalServerError)
+
+		defer rs.Body.Close()
+		body, err := io.ReadAll(rs.Body)
+		if err != nil {
+			t.Fatal(err)
+		}
+		bytes.TrimSpace(body)
+
+		assert.Equal(t, string(body), "Parsing failed\n")
+	})
+
+	t.Run("return `Internal Server` error if package.json cannot be written", func(t *testing.T) {
+		req := httptest.NewRequest(http.MethodDelete, "/-/package/{name}/dist-tags/{tag}", nil)
+		wrt := httptest.NewRecorder()
+
+		lg := &logrus.Logger{
+			Out: os.Stdout,
+			// Level: "DEBUG",
+			Formatter: &logrus.TextFormatter{
+				FullTimestamp:   true,
+				TimestampFormat: "2009-01-02 15:15:15",
+			},
+		}
+
+		cfg := config.Config{
+			RepoDir: "",
+		}
+
+		mfs := &storage.MockFs{}
+		mfs.GetIndexJsonFromStoreFunc = func(packageName string, registryPath string, lg *logrus.Logger) (string, bool, error) {
+			return "", true, nil
+		}
+		mfs.ReadIndexJsonFunc = func(fPath string, res *serviceidos.IndexJson, lg *logrus.Logger) error {
+			temp := serviceidos.IndexJson{
+				DistTags: map[string]string{
+					"current": "1.2.0",
+					"latest":  "1.2.0",
+				},
+			}
+			*res = temp
+			return nil
+		}
+		mfs.WriteIndexJsonFunc = func(fPath string, res *serviceidos.IndexJson, lg *logrus.Logger) error {
+			return fmt.Errorf("File cannot be written")
+		}
+
+		tag := "current"
+
+		//Hack to try to fake gorilla/mux vars
+		vars := map[string]string{
+			"name": "test-package",
+			"tag":  tag,
+		}
+
+		req = mux.SetURLVars(req, vars)
+
+		DistTagDelete(lg, cfg, mfs)(wrt, req)
+
+		rs := wrt.Result()
+
+		assert.Equal(t, rs.StatusCode, http.StatusInternalServerError)
+
+		defer rs.Body.Close()
+		body, err := io.ReadAll(rs.Body)
+		if err != nil {
+			t.Fatal(err)
+		}
+		bytes.TrimSpace(body)
+
+		assert.Equal(t, string(body), "File cannot be written\n")
+	})
+
+	t.Run("return 200 OK if tag can be deleted", func(t *testing.T) {
+		req := httptest.NewRequest(http.MethodDelete, "/-/package/{name}/dist-tags/{tag}", nil)
+		wrt := httptest.NewRecorder()
+
+		lg := &logrus.Logger{
+			Out: os.Stdout,
+			// Level: "DEBUG",
+			Formatter: &logrus.TextFormatter{
+				FullTimestamp:   true,
+				TimestampFormat: "2009-01-02 15:15:15",
+			},
+		}
+
+		cfg := config.Config{
+			RepoDir: "",
+		}
+
+		mfs := &storage.MockFs{}
+		mfs.GetIndexJsonFromStoreFunc = func(packageName string, registryPath string, lg *logrus.Logger) (string, bool, error) {
+			return "", true, nil
+		}
+		mfs.ReadIndexJsonFunc = func(fPath string, res *serviceidos.IndexJson, lg *logrus.Logger) error {
+			temp := serviceidos.IndexJson{
+				DistTags: map[string]string{
+					"current": "1.2.0",
+					"latest":  "1.2.0",
+				},
+			}
+			*res = temp
+			return nil
+		}
+		mfs.WriteIndexJsonFunc = func(fPath string, res *serviceidos.IndexJson, lg *logrus.Logger) error {
+			return nil
+		}
+
+		tag := "current"
+
+		//Hack to try to fake gorilla/mux vars
+		vars := map[string]string{
+			"name": "test-package",
+			"tag":  tag,
+		}
+
+		req = mux.SetURLVars(req, vars)
+
+		DistTagDelete(lg, cfg, mfs)(wrt, req)
+
+		rs := wrt.Result()
+
+		assert.Equal(t, rs.StatusCode, http.StatusOK)
+
+		defer rs.Body.Close()
+		body, err := io.ReadAll(rs.Body)
+		if err != nil {
+			t.Fatal(err)
+		}
+		bytes.TrimSpace(body)
+
+		assert.Equal(t, string(body), "{\"ok\":true,\"id\":\"current\",\"dist-tags\":\"{\\\"latest\\\":\\\"1.2.0\\\"}\"}")
+	})
+}
+
+func TestIntegrationTagDelete(t *testing.T) {
+	if testing.Short() {
+		t.Skip("Skipping deleteTags integration test")
+	}
+
+	token := "0N89nr/hmKXoBzG]R{fKH%YE1X"
+
+	tmpDir := t.TempDir()
+
+	mkDir(t, fmt.Sprintf("%s/@df/simplepackone", tmpDir))
+	mkDir(t, fmt.Sprintf("%s/output", tmpDir))
+
+	indexJsonFp := "intestdata/tags/index.json"
+	oldTgzFp := "intestdata/tags/simplepackone-1.0.0.tgz"
+	tgzFp := "intestdata/tags/simplepackone-1.9.0.tgz"
+
+	cpFile(t, indexJsonFp, fmt.Sprintf("%s/@df/simplepackone/index.json", tmpDir))
+	cpFile(t, oldTgzFp, fmt.Sprintf("%s/@df/simplepackone/simplepackone-1.0.0.tgz", tmpDir))
+	cpFile(t, tgzFp, fmt.Sprintf("%s/@df/simplepackone/simplepackone-1.9.0.tgz", tmpDir))
+
+	cfg := config.Config{
+		RepoDir: tmpDir,
+		Token:   token,
+	}
+
+	app := newTestApp(t, cfg)
+	app.Routes()
+	ts := newTestServer(t, app.Mux)
+	defer ts.Close()
+
+	code, _, body := ts.delete(t, fmt.Sprintf("/-/package/%s/dist-tags/pre-alpha", url.PathEscape("@df/simplepackone")), token)
+
+	assert.Equal(t, code, http.StatusOK)
+	assert.NotEmpty(t, body)
+
+	old := readTestFile(t, indexJsonFp)
+	oldRet := make(map[string]interface{})
+	json.Unmarshal(old, &oldRet)
+
+	assert.Contains(t, oldRet["dist-tags"], "pre-alpha")
+
+	modified := readTestFile(t, fmt.Sprintf("%s/@df/simplepackone/index.json", tmpDir))
+	modifiedRet := make(map[string]interface{})
+	json.Unmarshal(modified, &modifiedRet)
+
+	assert.NotContains(t, modifiedRet["dist-tags"], "pre-alpha")
+}

internal/handler/tagget.go

@@ -0,0 +1,50 @@
+package handler
+
+import (
+	"encoding/json"
+	"fmt"
+	"gosimplenpm/internal/config"
+	"gosimplenpm/internal/serviceidos"
+	"gosimplenpm/internal/storage"
+	"net/http"
+	"net/url"
+	"strconv"
+
+	"github.com/gorilla/mux"
+	"github.com/sirupsen/logrus"
+)
+
+func DistTagGet(lg *logrus.Logger, cfg config.Config, stg storage.Storage) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		escapedName := mux.Vars(r)["name"]
+		packageName, _ := url.PathUnescape(escapedName)
+		lg.WithFields(logrus.Fields{
+			"function": "dist-tags-get",
+		}).Debugf("Package name => %s\n", packageName)
+
+		fileToServe, found, err := stg.GetIndexJsonFromStore(packageName, cfg.RepoDir, lg)
+		if err != nil {
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+			return
+		}
+
+		if !found {
+			ret := fmt.Sprintf("Package not found: %s", packageName)
+			http.Error(w, ret, http.StatusNotFound)
+			return
+		}
+
+		var jsonFile serviceidos.IndexJson
+		err = stg.ReadIndexJson(fileToServe, &jsonFile, lg)
+		if err != nil {
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+			return
+		}
+
+		jsonString, _ := json.Marshal(jsonFile.DistTags)
+
+		w.Header().Set("Content-Type", "application/json")
+		w.Header().Set("Content-Length", strconv.Itoa(len(jsonString)))
+		w.Write(jsonString)
+	}
+}

internal/handler/tagget_test.go

@@ -0,0 +1,255 @@
+package handler
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"gosimplenpm/internal/config"
+	"gosimplenpm/internal/serviceidos"
+	"gosimplenpm/internal/storage"
+	"io"
+	"net/http"
+	"net/http/httptest"
+	"net/url"
+	"os"
+	"testing"
+
+	"github.com/gorilla/mux"
+	"github.com/sirupsen/logrus"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestUnitTagGet(t *testing.T) {
+	t.Run("return `Internal Server` error if index json cannot be retrieved", func(t *testing.T) {
+		req := httptest.NewRequest(http.MethodGet, "/-/package/{name}/dist-tags", nil)
+		wrt := httptest.NewRecorder()
+
+		lg := &logrus.Logger{
+			Out: os.Stdout,
+			// Level: "DEBUG",
+			Formatter: &logrus.TextFormatter{
+				FullTimestamp:   true,
+				TimestampFormat: "2009-01-02 15:15:15",
+			},
+		}
+
+		cfg := config.Config{
+			RepoDir: "",
+		}
+
+		mfs := &storage.MockFs{}
+		mfs.GetIndexJsonFromStoreFunc = func(packageName string, registryPath string, lg *logrus.Logger) (string, bool, error) {
+			return "", false, fmt.Errorf("Filesystem error")
+		}
+
+		tag := "1.2.4"
+
+		//Hack to try to fake gorilla/mux vars
+		vars := map[string]string{
+			"name": "test-package",
+			"tag":  tag,
+		}
+
+		req = mux.SetURLVars(req, vars)
+
+		DistTagGet(lg, cfg, mfs)(wrt, req)
+
+		rs := wrt.Result()
+
+		assert.Equal(t, rs.StatusCode, http.StatusInternalServerError)
+
+		defer rs.Body.Close()
+		body, err := io.ReadAll(rs.Body)
+		if err != nil {
+			t.Fatal(err)
+		}
+		bytes.TrimSpace(body)
+
+		assert.Equal(t, string(body), "Filesystem error\n")
+	})
+
+	t.Run("return `Not Found` error if package cannot be retrieved", func(t *testing.T) {
+		req := httptest.NewRequest(http.MethodGet, "/-/package/{name}/dist-tags", nil)
+		wrt := httptest.NewRecorder()
+
+		lg := &logrus.Logger{
+			Out: os.Stdout,
+			// Level: "DEBUG",
+			Formatter: &logrus.TextFormatter{
+				FullTimestamp:   true,
+				TimestampFormat: "2009-01-02 15:15:15",
+			},
+		}
+
+		cfg := config.Config{
+			RepoDir: "",
+		}
+
+		mfs := &storage.MockFs{}
+		mfs.GetIndexJsonFromStoreFunc = func(packageName string, registryPath string, lg *logrus.Logger) (string, bool, error) {
+			return "", false, nil
+		}
+
+		//Hack to try to fake gorilla/mux vars
+		vars := map[string]string{
+			"name": "test-package",
+		}
+
+		req = mux.SetURLVars(req, vars)
+
+		DistTagGet(lg, cfg, mfs)(wrt, req)
+
+		rs := wrt.Result()
+
+		assert.Equal(t, rs.StatusCode, http.StatusNotFound)
+
+		defer rs.Body.Close()
+		body, err := io.ReadAll(rs.Body)
+		if err != nil {
+			t.Fatal(err)
+		}
+		bytes.TrimSpace(body)
+
+		assert.Equal(t, string(body), "Package not found: test-package\n")
+	})
+
+	t.Run("return `Internal Server` error if package.json cannot be parsed", func(t *testing.T) {
+		req := httptest.NewRequest(http.MethodDelete, "/-/package/{name}/dist-tags", nil)
+		wrt := httptest.NewRecorder()
+
+		lg := &logrus.Logger{
+			Out: os.Stdout,
+			// Level: "DEBUG",
+			Formatter: &logrus.TextFormatter{
+				FullTimestamp:   true,
+				TimestampFormat: "2009-01-02 15:15:15",
+			},
+		}
+
+		cfg := config.Config{
+			RepoDir: "",
+		}
+
+		mfs := &storage.MockFs{}
+		mfs.GetIndexJsonFromStoreFunc = func(packageName string, registryPath string, lg *logrus.Logger) (string, bool, error) {
+			return "", true, nil
+		}
+		mfs.ReadIndexJsonFunc = func(fPath string, res *serviceidos.IndexJson, lg *logrus.Logger) error {
+			return fmt.Errorf("Parsing failed")
+		}
+
+		//Hack to try to fake gorilla/mux vars
+		vars := map[string]string{
+			"name": "test-package",
+		}
+
+		req = mux.SetURLVars(req, vars)
+
+		DistTagGet(lg, cfg, mfs)(wrt, req)
+
+		rs := wrt.Result()
+
+		assert.Equal(t, rs.StatusCode, http.StatusInternalServerError)
+
+		defer rs.Body.Close()
+		body, err := io.ReadAll(rs.Body)
+		if err != nil {
+			t.Fatal(err)
+		}
+		bytes.TrimSpace(body)
+
+		assert.Equal(t, string(body), "Parsing failed\n")
+	})
+
+	t.Run("return 200 OK", func(t *testing.T) {
+		req := httptest.NewRequest(http.MethodDelete, "/-/package/{name}/dist-tags", nil)
+		wrt := httptest.NewRecorder()
+
+		lg := &logrus.Logger{
+			Out: os.Stdout,
+			// Level: "DEBUG",
+			Formatter: &logrus.TextFormatter{
+				FullTimestamp:   true,
+				TimestampFormat: "2009-01-02 15:15:15",
+			},
+		}
+
+		cfg := config.Config{
+			RepoDir: "",
+		}
+
+		mfs := &storage.MockFs{}
+		mfs.GetIndexJsonFromStoreFunc = func(packageName string, registryPath string, lg *logrus.Logger) (string, bool, error) {
+			return "", true, nil
+		}
+		mfs.ReadIndexJsonFunc = func(fPath string, res *serviceidos.IndexJson, lg *logrus.Logger) error {
+			temp := serviceidos.IndexJson{
+				DistTags: map[string]string{
+					"current": "1.2.0",
+					"latest":  "1.2.0",
+				},
+			}
+			*res = temp
+			return nil
+		}
+
+		//Hack to try to fake gorilla/mux vars
+		vars := map[string]string{
+			"name": "test-package",
+		}
+
+		req = mux.SetURLVars(req, vars)
+
+		DistTagGet(lg, cfg, mfs)(wrt, req)
+
+		rs := wrt.Result()
+
+		assert.Equal(t, rs.StatusCode, http.StatusOK)
+
+		defer rs.Body.Close()
+		body, err := io.ReadAll(rs.Body)
+		if err != nil {
+			t.Fatal(err)
+		}
+		bytes.TrimSpace(body)
+
+		assert.Equal(t, string(body), "{\"current\":\"1.2.0\",\"latest\":\"1.2.0\"}")
+	})
+}
+
+func TestIntegrationTagGet(t *testing.T) {
+	if testing.Short() {
+		t.Skip("Skipping getTags integration test")
+	}
+
+	token := "0N89nr/hmKXoBzG]R{fKH%YE1X"
+
+	tmpDir := t.TempDir()
+
+	mkDir(t, fmt.Sprintf("%s/@df/simplepackone", tmpDir))
+	mkDir(t, fmt.Sprintf("%s/output", tmpDir))
+
+	indexJsonFp := "intestdata/tags/index.json"
+	tgzFp := "intestdata/tags/simplepackone-1.9.0.tgz"
+
+	cpFile(t, indexJsonFp, fmt.Sprintf("%s/@df/simplepackone/index.json", tmpDir))
+	cpFile(t, tgzFp, fmt.Sprintf("%s/@df/simplepackone/simplepackone-1.9.0.tgz", tmpDir))
+
+	cfg := config.Config{
+		RepoDir: tmpDir,
+		Token:   token,
+	}
+
+	app := newTestApp(t, cfg)
+	app.Routes()
+	ts := newTestServer(t, app.Mux)
+	defer ts.Close()
+
+	code, _, body := ts.get(t, fmt.Sprintf("/-/package/%s/dist-tags", url.PathEscape("@df/simplepackone")))
+
+	assert.Equal(t, code, http.StatusOK)
+	ret := make(map[string]interface{})
+	json.Unmarshal(body, &ret)
+	assert.Contains(t, ret, "latest")
+	assert.Equal(t, "1.9.0", ret["latest"])
+}

internal/handler/tagput.go

@@ -0,0 +1,92 @@
+package handler
+
+import (
+	"encoding/json"
+	"fmt"
+	"gosimplenpm/internal/config"
+	"gosimplenpm/internal/serviceidos"
+	"gosimplenpm/internal/storage"
+	"io"
+	"net/http"
+	"net/url"
+	"strconv"
+
+	"github.com/gorilla/mux"
+	"github.com/sirupsen/logrus"
+	"golang.org/x/mod/semver"
+)
+
+func DistTagPut(lg *logrus.Logger, cfg config.Config, stg storage.Storage) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		escapedName := mux.Vars(r)["name"]
+		packageName, _ := url.PathUnescape(escapedName)
+		lg.WithFields(logrus.Fields{
+			"function": "dist-tags-put",
+		}).Debugf("Package name => %s\n", packageName)
+
+		escapedName = mux.Vars(r)["tag"]
+		tag, _ := url.PathUnescape(escapedName)
+		lg.WithFields(logrus.Fields{
+			"function": "dist-tags-put",
+		}).Debugf("Tag => %s\n", tag)
+
+		if semver.IsValid(tag) {
+			http.Error(w, fmt.Sprintf("Tag %s cannot be a semver version", tag), http.StatusBadRequest)
+			return
+		}
+
+		if tag == "latest" {
+			http.Error(w, "Cannot modify the latest tag", http.StatusBadRequest)
+			return
+		}
+
+		body, _ := io.ReadAll(r.Body)
+		var version string
+		_ = json.Unmarshal(body, &version)
+		lg.WithFields(logrus.Fields{
+			"function": "dist-tags-put",
+		}).Debugf("Body => %s", version)
+
+		fileToServe, found, err := stg.GetIndexJsonFromStore(packageName, cfg.RepoDir, lg)
+		if err != nil {
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+			return
+		}
+
+		if !found {
+			ret := fmt.Sprintf("Package not found: %s", packageName)
+			http.Error(w, ret, http.StatusNotFound)
+			return
+		}
+
+		var jsonFile serviceidos.IndexJson
+		err = stg.ReadIndexJson(fileToServe, &jsonFile, lg)
+		if err != nil {
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+			return
+		}
+
+		jsonFile.DistTags[tag] = version
+
+		// Write index.json
+		err = stg.WriteIndexJson(fileToServe, &jsonFile, lg)
+		if err != nil {
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+			return
+		}
+
+		distTagsString, _ := json.Marshal(jsonFile.DistTags)
+
+		response := serviceidos.TagPutResponse{
+			Ok:       true,
+			ID:       escapedName,
+			DistTags: string(distTagsString),
+		}
+
+		jsonString, _ := json.Marshal(response)
+
+		w.Header().Set("Content-Type", "application/json")
+		w.Header().Set("Content-Length", strconv.Itoa(len(jsonString)))
+		w.Write(jsonString)
+	}
+}

internal/handler/tagput_test.go

@@ -0,0 +1,436 @@
+package handler
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"gosimplenpm/internal/config"
+	"gosimplenpm/internal/serviceidos"
+	"gosimplenpm/internal/storage"
+	"io"
+	"net/http"
+	"net/http/httptest"
+	"net/url"
+	"os"
+	"strings"
+	"testing"
+
+	"github.com/gorilla/mux"
+	"github.com/sirupsen/logrus"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestUnitTagPut(t *testing.T) {
+	t.Run("return `Bad request` error if tag is semver", func(t *testing.T) {
+		req := httptest.NewRequest(http.MethodPut, "/-/package/{name}/dist-tags/{tag}", nil)
+		wrt := httptest.NewRecorder()
+
+		lg := &logrus.Logger{
+			Out: os.Stdout,
+			// Level: "DEBUG",
+			Formatter: &logrus.TextFormatter{
+				FullTimestamp:   true,
+				TimestampFormat: "2009-01-02 15:15:15",
+			},
+		}
+
+		cfg := config.Config{
+			RepoDir: "",
+		}
+
+		mfs := &storage.MockFs{}
+
+		tag := "v1.0.0"
+
+		//Hack to try to fake gorilla/mux vars
+		vars := map[string]string{
+			"name": "test-package",
+			"tag":  tag,
+		}
+
+		req = mux.SetURLVars(req, vars)
+
+		DistTagPut(lg, cfg, mfs)(wrt, req)
+
+		rs := wrt.Result()
+
+		assert.Equal(t, rs.StatusCode, http.StatusBadRequest)
+
+		defer rs.Body.Close()
+		body, err := io.ReadAll(rs.Body)
+		if err != nil {
+			t.Fatal(err)
+		}
+		bytes.TrimSpace(body)
+
+		assert.Equal(t, string(body), fmt.Sprintf("Tag %s cannot be a semver version\n", tag))
+	})
+
+	t.Run("return `Bad request` error if tag is latest", func(t *testing.T) {
+		req := httptest.NewRequest(http.MethodPut, "/-/package/{name}/dist-tags/{tag}", nil)
+		wrt := httptest.NewRecorder()
+
+		lg := &logrus.Logger{
+			Out: os.Stdout,
+			// Level: "DEBUG",
+			Formatter: &logrus.TextFormatter{
+				FullTimestamp:   true,
+				TimestampFormat: "2009-01-02 15:15:15",
+			},
+		}
+
+		cfg := config.Config{
+			RepoDir: "",
+		}
+
+		mfs := &storage.MockFs{}
+
+		tag := "latest"
+
+		//Hack to try to fake gorilla/mux vars
+		vars := map[string]string{
+			"name": "test-package",
+			"tag":  tag,
+		}
+
+		req = mux.SetURLVars(req, vars)
+
+		DistTagPut(lg, cfg, mfs)(wrt, req)
+
+		rs := wrt.Result()
+
+		assert.Equal(t, rs.StatusCode, http.StatusBadRequest)
+
+		defer rs.Body.Close()
+		body, err := io.ReadAll(rs.Body)
+		if err != nil {
+			t.Fatal(err)
+		}
+		bytes.TrimSpace(body)
+
+		assert.Equal(t, string(body), "Cannot modify the latest tag\n")
+	})
+
+	t.Run("return `Internal Server` error if index json cannot be retrieved", func(t *testing.T) {
+		req := httptest.NewRequest(http.MethodPut, "/-/package/{name}/dist-tags/{tag}", strings.NewReader("development"))
+		wrt := httptest.NewRecorder()
+
+		lg := &logrus.Logger{
+			Out: os.Stdout,
+			// Level: "DEBUG",
+			Formatter: &logrus.TextFormatter{
+				FullTimestamp:   true,
+				TimestampFormat: "2009-01-02 15:15:15",
+			},
+		}
+
+		cfg := config.Config{
+			RepoDir: "",
+		}
+
+		mfs := &storage.MockFs{}
+		mfs.GetIndexJsonFromStoreFunc = func(packageName string, registryPath string, lg *logrus.Logger) (string, bool, error) {
+			return "", false, fmt.Errorf("Filesystem error")
+		}
+
+		tag := "current"
+
+		//Hack to try to fake gorilla/mux vars
+		vars := map[string]string{
+			"name": "test-package",
+			"tag":  tag,
+		}
+
+		req = mux.SetURLVars(req, vars)
+
+		DistTagPut(lg, cfg, mfs)(wrt, req)
+
+		rs := wrt.Result()
+
+		assert.Equal(t, rs.StatusCode, http.StatusInternalServerError)
+
+		defer rs.Body.Close()
+		body, err := io.ReadAll(rs.Body)
+		if err != nil {
+			t.Fatal(err)
+		}
+		bytes.TrimSpace(body)
+
+		assert.Equal(t, string(body), "Filesystem error\n")
+	})
+
+	t.Run("return `Not found` error if package cannot be retrieved", func(t *testing.T) {
+		req := httptest.NewRequest(http.MethodPut, "/-/package/{name}/dist-tags/{tag}", strings.NewReader("development"))
+		wrt := httptest.NewRecorder()
+
+		lg := &logrus.Logger{
+			Out: os.Stdout,
+			// Level: "DEBUG",
+			Formatter: &logrus.TextFormatter{
+				FullTimestamp:   true,
+				TimestampFormat: "2009-01-02 15:15:15",
+			},
+		}
+
+		cfg := config.Config{
+			RepoDir: "",
+		}
+
+		mfs := &storage.MockFs{}
+		mfs.GetIndexJsonFromStoreFunc = func(packageName string, registryPath string, lg *logrus.Logger) (string, bool, error) {
+			return "", false, nil
+		}
+
+		tag := "current"
+
+		//Hack to try to fake gorilla/mux vars
+		vars := map[string]string{
+			"name": "test-package",
+			"tag":  tag,
+		}
+
+		req = mux.SetURLVars(req, vars)
+
+		DistTagPut(lg, cfg, mfs)(wrt, req)
+
+		rs := wrt.Result()
+
+		assert.Equal(t, rs.StatusCode, http.StatusNotFound)
+
+		defer rs.Body.Close()
+		body, err := io.ReadAll(rs.Body)
+		if err != nil {
+			t.Fatal(err)
+		}
+		bytes.TrimSpace(body)
+
+		assert.Equal(t, string(body), "Package not found: test-package\n")
+	})
+
+	t.Run("return `Internal Server` error if package.json cannot be parsed", func(t *testing.T) {
+		req := httptest.NewRequest(http.MethodPut, "/-/package/{name}/dist-tags/{tag}", strings.NewReader("development"))
+		wrt := httptest.NewRecorder()
+
+		lg := &logrus.Logger{
+			Out: os.Stdout,
+			// Level: "DEBUG",
+			Formatter: &logrus.TextFormatter{
+				FullTimestamp:   true,
+				TimestampFormat: "2009-01-02 15:15:15",
+			},
+		}
+
+		cfg := config.Config{
+			RepoDir: "",
+		}
+
+		mfs := &storage.MockFs{}
+		mfs.GetIndexJsonFromStoreFunc = func(packageName string, registryPath string, lg *logrus.Logger) (string, bool, error) {
+			return "", true, nil
+		}
+		mfs.ReadIndexJsonFunc = func(fPath string, res *serviceidos.IndexJson, lg *logrus.Logger) error {
+			return fmt.Errorf("Parsing failed")
+		}
+
+		tag := "current"
+
+		//Hack to try to fake gorilla/mux vars
+		vars := map[string]string{
+			"name": "test-package",
+			"tag":  tag,
+		}
+
+		req = mux.SetURLVars(req, vars)
+
+		DistTagPut(lg, cfg, mfs)(wrt, req)
+
+		rs := wrt.Result()
+
+		assert.Equal(t, rs.StatusCode, http.StatusInternalServerError)
+
+		defer rs.Body.Close()
+		body, err := io.ReadAll(rs.Body)
+		if err != nil {
+			t.Fatal(err)
+		}
+		bytes.TrimSpace(body)
+
+		assert.Equal(t, string(body), "Parsing failed\n")
+	})
+
+	t.Run("return `Internal Server` error if package.json cannot be written", func(t *testing.T) {
+		req := httptest.NewRequest(http.MethodPut, "/-/package/{name}/dist-tags/{tag}", strings.NewReader("\"3.5.6-rc\""))
+		wrt := httptest.NewRecorder()
+
+		lg := &logrus.Logger{
+			Out: os.Stdout,
+			// Level: "DEBUG",
+			Formatter: &logrus.TextFormatter{
+				FullTimestamp:   true,
+				TimestampFormat: "2009-01-02 15:15:15",
+			},
+		}
+
+		cfg := config.Config{
+			RepoDir: "",
+		}
+
+		mfs := &storage.MockFs{}
+		mfs.GetIndexJsonFromStoreFunc = func(packageName string, registryPath string, lg *logrus.Logger) (string, bool, error) {
+			return "", true, nil
+		}
+		mfs.ReadIndexJsonFunc = func(fPath string, res *serviceidos.IndexJson, lg *logrus.Logger) error {
+			temp := serviceidos.IndexJson{
+				DistTags: map[string]string{
+					"current": "1.2.0",
+					"latest":  "1.2.0",
+				},
+			}
+			*res = temp
+			return nil
+		}
+		mfs.WriteIndexJsonFunc = func(fPath string, res *serviceidos.IndexJson, lg *logrus.Logger) error {
+			return fmt.Errorf("File cannot be written")
+		}
+
+		tag := "current"
+
+		//Hack to try to fake gorilla/mux vars
+		vars := map[string]string{
+			"name": "test-package",
+			"tag":  tag,
+		}
+
+		req = mux.SetURLVars(req, vars)
+
+		DistTagPut(lg, cfg, mfs)(wrt, req)
+
+		rs := wrt.Result()
+
+		assert.Equal(t, rs.StatusCode, http.StatusInternalServerError)
+
+		defer rs.Body.Close()
+		body, err := io.ReadAll(rs.Body)
+		if err != nil {
+			t.Fatal(err)
+		}
+		bytes.TrimSpace(body)
+
+		assert.Equal(t, string(body), "File cannot be written\n")
+	})
+
+	t.Run("return 200 OK if tag can be overwritten", func(t *testing.T) {
+		req := httptest.NewRequest(http.MethodPut, "/-/package/{name}/dist-tags/{tag}", strings.NewReader("\"3.5.6-rc\""))
+
+		// req := httptest.NewRequest(http.MethodPut, "/-/package/{name}/dist-tags/{tag}", strings.NewReader("{\"version\":\"development\"}"))
+		wrt := httptest.NewRecorder()
+
+		lg := &logrus.Logger{
+			Out: os.Stdout,
+			// Level: "DEBUG",
+			Formatter: &logrus.TextFormatter{
+				FullTimestamp:   true,
+				TimestampFormat: "2009-01-02 15:15:15",
+			},
+		}
+
+		cfg := config.Config{
+			RepoDir: "",
+		}
+
+		mfs := &storage.MockFs{}
+		mfs.GetIndexJsonFromStoreFunc = func(packageName string, registryPath string, lg *logrus.Logger) (string, bool, error) {
+			return "", true, nil
+		}
+		mfs.ReadIndexJsonFunc = func(fPath string, res *serviceidos.IndexJson, lg *logrus.Logger) error {
+			temp := serviceidos.IndexJson{
+				DistTags: map[string]string{
+					"current": "1.2.0",
+					"latest":  "1.2.0",
+				},
+			}
+			*res = temp
+			return nil
+		}
+		mfs.WriteIndexJsonFunc = func(fPath string, res *serviceidos.IndexJson, lg *logrus.Logger) error {
+			return nil
+		}
+
+		tag := "current"
+
+		//Hack to try to fake gorilla/mux vars
+		vars := map[string]string{
+			"name": "test-package",
+			"tag":  tag,
+		}
+
+		req = mux.SetURLVars(req, vars)
+
+		DistTagPut(lg, cfg, mfs)(wrt, req)
+
+		rs := wrt.Result()
+
+		assert.Equal(t, rs.StatusCode, http.StatusOK)
+
+		defer rs.Body.Close()
+		body, err := io.ReadAll(rs.Body)
+		if err != nil {
+			t.Fatal(err)
+		}
+		bytes.TrimSpace(body)
+
+		assert.Equal(t, string(body), "{\"ok\":true,\"id\":\"current\",\"dist-tags\":\"{\\\"current\\\":\\\"3.5.6-rc\\\",\\\"latest\\\":\\\"1.2.0\\\"}\"}")
+	})
+}
+
+func TestIntegrationTagPut(t *testing.T) {
+	if testing.Short() {
+		t.Skip("Skipping putTags integration test")
+	}
+
+	token := "0N89nr/hmKXoBzG]R{fKH%YE1X"
+
+	tmpDir := t.TempDir()
+
+	mkDir(t, fmt.Sprintf("%s/@df/simplepackone", tmpDir))
+	mkDir(t, fmt.Sprintf("%s/output", tmpDir))
+
+	indexJsonFp := "intestdata/tags/index.json"
+	oldTgzFp := "intestdata/tags/simplepackone-1.0.0.tgz"
+	tgzFp := "intestdata/tags/simplepackone-1.9.0.tgz"
+
+	cpFile(t, indexJsonFp, fmt.Sprintf("%s/@df/simplepackone/index.json", tmpDir))
+	cpFile(t, oldTgzFp, fmt.Sprintf("%s/@df/simplepackone/simplepackone-1.0.0.tgz", tmpDir))
+	cpFile(t, tgzFp, fmt.Sprintf("%s/@df/simplepackone/simplepackone-1.9.0.tgz", tmpDir))
+
+	cfg := config.Config{
+		RepoDir: tmpDir,
+		Token:   token,
+	}
+
+	app := newTestApp(t, cfg)
+	app.Routes()
+	ts := newTestServer(t, app.Mux)
+	defer ts.Close()
+
+	code, _, body := ts.put(t, fmt.Sprintf("/-/package/%s/dist-tags/release-candidate", url.PathEscape("@df/simplepackone")), token, "\"1.0.0\"")
+
+	assert.Equal(t, code, http.StatusOK)
+
+	assert.NotEmpty(t, body)
+
+	old := readTestFile(t, indexJsonFp)
+	oldRet := make(map[string]interface{})
+	json.Unmarshal(old, &oldRet)
+
+	assert.NotContains(t, oldRet["dist-tags"], "release-candidate")
+
+	modified := readTestFile(t, fmt.Sprintf("%s/@df/simplepackone/index.json", tmpDir))
+	modifiedRet := make(map[string]interface{})
+	json.Unmarshal(modified, &modifiedRet)
+
+	assert.Contains(t, modifiedRet["dist-tags"], "release-candidate")
+	version := modifiedRet["dist-tags"].(map[string]interface{})
+	assert.Equal(t, version["release-candidate"], "1.0.0")
+
+}

internal/handler/tar.go

@@ -0,0 +1,58 @@
+package handler
+
+import (
+	"bytes"
+	"fmt"
+	"gosimplenpm/internal/config"
+	"gosimplenpm/internal/storage"
+	"io"
+	"net/http"
+	"net/url"
+	"strconv"
+	"strings"
+
+	"github.com/gorilla/mux"
+	"github.com/sirupsen/logrus"
+)
+
+func PackageTarGet(lg *logrus.Logger, cfg config.Config, stg storage.Storage) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		// Sample  output of npm view
+		// Public
+		// dist
+		// .tarball: https://registry.npmjs.org/react/-/react-18.2.0.tgz
+		// LocalHost
+		// dist
+		// .tarball: http://localhost:4000/@ookusanya/package1/-/package1-0.2.0.tgz
+
+		escapedName := mux.Vars(r)["name"]
+		packageName, _ := url.PathUnescape(escapedName)
+		lg.WithFields(logrus.Fields{
+			"function": "get-tar",
+		}).Debugf("Package name => %s\n", packageName)
+		escapedName = mux.Vars(r)["tar"]
+		tarFileNameWithScope, _ := url.PathUnescape(escapedName)
+		lg.WithFields(logrus.Fields{
+			"function": "get-tar",
+		}).Debugf("Tarfile name => %s\n", tarFileNameWithScope)
+
+		fmt.Printf("Tarfile name => %s\n", tarFileNameWithScope)
+
+		fragments := strings.Split(tarFileNameWithScope, "/")
+		tarFileName := fragments[len(fragments)-1]
+		// fragments := strings.Split(urlFileFragment, "-")
+		// versionFragment := fragments[len(fragments)-1]
+		// versionName := strings.Split(versionFragment, ".tgz")[0]
+		// fmt.Printf("Version name => %s\n", versionName)
+		fileAsString, err := stg.GetTarFromStore(packageName, tarFileName, cfg.RepoDir, lg)
+		if err != nil {
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+			return
+		}
+
+		// Sending the tar as a base64 string
+		w.Header().Set("Content-Type", "application/octet-stream")
+		w.Header().Set("Content-Length", strconv.Itoa(len([]byte(fileAsString))))
+		io.Copy(w, bytes.NewReader([]byte(fileAsString)))
+	}
+}

internal/handler/tar_test.go

@@ -0,0 +1,159 @@
+package handler
+
+import (
+	"bytes"
+	"fmt"
+	"gosimplenpm/internal/config"
+	"gosimplenpm/internal/storage"
+	"io"
+	"net/http"
+	"net/http/httptest"
+	"net/url"
+	"os"
+	"testing"
+
+	"github.com/gorilla/mux"
+	"github.com/sirupsen/logrus"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestUnitTar(t *testing.T) {
+	t.Run("return `Bad request` error if tar package cannot be read from the filesystem", func(t *testing.T) {
+		req := httptest.NewRequest(http.MethodGet, "/{name}/-/{tar}", nil)
+		wrt := httptest.NewRecorder()
+
+		lg := &logrus.Logger{
+			Out: os.Stdout,
+			// Level: "DEBUG",
+			Formatter: &logrus.TextFormatter{
+				FullTimestamp:   true,
+				TimestampFormat: "2009-01-02 15:15:15",
+			},
+		}
+
+		cfg := config.Config{
+			RepoDir: "",
+		}
+
+		mfs := &storage.MockFs{}
+		mfs.GetTarFromStoreFunc = func(packageName string, tarFileName string, registryPath string, lg *logrus.Logger) (string, error) {
+			return "", fmt.Errorf("Filesystem error")
+		}
+
+		tag := "@test%2Fpackage-1.2.0.tgz"
+
+		//Hack to try to fake gorilla/mux vars
+		vars := map[string]string{
+			"name": "@test%2Fpackage",
+			"tar":  tag,
+		}
+
+		req = mux.SetURLVars(req, vars)
+
+		PackageTarGet(lg, cfg, mfs)(wrt, req)
+
+		rs := wrt.Result()
+
+		assert.Equal(t, rs.StatusCode, http.StatusInternalServerError)
+
+		defer rs.Body.Close()
+		body, err := io.ReadAll(rs.Body)
+		if err != nil {
+			t.Fatal(err)
+		}
+		bytes.TrimSpace(body)
+
+		assert.Equal(t, string(body), "Filesystem error\n")
+	})
+
+	t.Run("return 200 OK if tar is found on the filesystem", func(t *testing.T) {
+		req := httptest.NewRequest(http.MethodGet, "/{name}/-/{tar}", nil)
+		wrt := httptest.NewRecorder()
+
+		lg := &logrus.Logger{
+			Out: os.Stdout,
+			// Level: "DEBUG",
+			Formatter: &logrus.TextFormatter{
+				FullTimestamp:   true,
+				TimestampFormat: "2009-01-02 15:15:15",
+			},
+		}
+
+		cfg := config.Config{
+			RepoDir: "",
+		}
+
+		mfs := &storage.MockFs{}
+		mfs.GetTarFromStoreFunc = func(packageName string, tarFileName string, registryPath string, lg *logrus.Logger) (string, error) {
+			return "OHnFFeCPAnb7E0jRLSuw4hVrNDVdDmKB4lbye6oZoBVItuRKy6ee43yAMaO6k0yhr2SU9HqWSZ", nil
+		}
+
+		tag := "@test%2Fpackage-1.2.0.tgz"
+
+		//Hack to try to fake gorilla/mux vars
+		vars := map[string]string{
+			"name": "@test%2Fpackage",
+			"tar":  tag,
+		}
+
+		req = mux.SetURLVars(req, vars)
+
+		PackageTarGet(lg, cfg, mfs)(wrt, req)
+
+		rs := wrt.Result()
+
+		assert.Equal(t, rs.StatusCode, http.StatusOK)
+
+		defer rs.Body.Close()
+		body, err := io.ReadAll(rs.Body)
+		if err != nil {
+			t.Fatal(err)
+		}
+		bytes.TrimSpace(body)
+
+		assert.Equal(t, string(body), "OHnFFeCPAnb7E0jRLSuw4hVrNDVdDmKB4lbye6oZoBVItuRKy6ee43yAMaO6k0yhr2SU9HqWSZ")
+	})
+}
+
+func TestIntegrationTar(t *testing.T) {
+	if testing.Short() {
+		t.Skip("Skipping getTar integration test")
+	}
+
+	token := "0N89nr/hmKXoBzG]R{fKH%YE1X"
+
+	tmpDir := t.TempDir()
+
+	t.Logf("Temp Dir: %s", tmpDir)
+
+	// cpFolders(t, "intestdata/@df", fmt.Sprintf("%s/@df", tmpDir))
+
+	mkDir(t, fmt.Sprintf("%s/@df/simplepackone", tmpDir))
+	mkDir(t, fmt.Sprintf("%s/output", tmpDir))
+
+	indexJsonFp := "intestdata/tar/index.json"
+	tgzFp := "intestdata/tar/simplepackone-1.0.0.tgz"
+
+	cpFile(t, indexJsonFp, fmt.Sprintf("%s/@df/simplepackone/index.json", tmpDir))
+	cpFile(t, tgzFp, fmt.Sprintf("%s/@df/simplepackone/simplepackone-1.0.0.tgz", tmpDir))
+
+	cfg := config.Config{
+		RepoDir: tmpDir,
+		Token:   token,
+	}
+
+	app := newTestApp(t, cfg)
+	app.Routes()
+	ts := newTestServer(t, app.Mux)
+	defer ts.Close()
+
+	tarUrlFragment := url.PathEscape("@df/simplepackone-1.0.0.tgz")
+	nameUrlFragment := url.PathEscape("@df/simplepackone")
+
+	code, _, body := ts.get(t, fmt.Sprintf("/%s/-/%s", nameUrlFragment, tarUrlFragment))
+	assert.Equal(t, code, http.StatusOK)
+	// assert.NotEmpty(t, body)
+
+	expected := readTestFileAsBase64(t, tgzFp)
+	assert.Equal(t, string(body), expected)
+}

internal/handler/testutils_test.go

@@ -0,0 +1,231 @@
+package handler
+
+import (
+	"bytes"
+	"encoding/base64"
+	"fmt"
+	"gosimplenpm/internal/config"
+	"gosimplenpm/internal/storage"
+	"io"
+	"net/http"
+	"net/http/httptest"
+	"os"
+	"path/filepath"
+	"strings"
+	"testing"
+
+	"github.com/sirupsen/logrus"
+)
+
+func newTestApp(t *testing.T, cfg config.Config) *Application {
+	return &Application{
+		Conf: cfg,
+		Logger: &logrus.Logger{
+			Out: io.Discard,
+			// Level: logrus.DebugLevel,
+			// Formatter: &logrus.TextFormatter{
+			// 	FullTimestamp:   true,
+			// 	TimestampFormat: "2009-01-02 15:15:15",
+			// },
+		},
+		FSStorage: &storage.FSStorage{},
+	}
+}
+
+type testServer struct {
+	*httptest.Server
+}
+
+func newTestServer(t *testing.T, h http.Handler) *testServer {
+	ts := httptest.NewServer(h)
+	return &testServer{ts}
+}
+
+func (ts *testServer) get(t *testing.T, urlPath string) (int, http.Header, []byte) {
+	rs, err := ts.Client().Get(ts.URL + urlPath)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	defer rs.Body.Close()
+
+	body, err := io.ReadAll(rs.Body)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	body = bytes.TrimSpace(body)
+	return rs.StatusCode, rs.Header, body
+}
+
+func (ts *testServer) put(t *testing.T, urlPath string, token string, data string) (int, http.Header, []byte) {
+	req, err := http.NewRequest(http.MethodPut, ts.URL+urlPath, strings.NewReader(data))
+	req.Header.Set("Authorization", fmt.Sprintf("Bearer %s", token))
+	if err != nil {
+		t.Fatal(err)
+	}
+	rs, err := ts.Client().Do(req)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	defer rs.Body.Close()
+
+	body, err := io.ReadAll(rs.Body)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	body = bytes.TrimSpace(body)
+	return rs.StatusCode, rs.Header, body
+}
+
+func (ts *testServer) delete(t *testing.T, urlPath string, token string) (int, http.Header, []byte) {
+	req, err := http.NewRequest(http.MethodDelete, ts.URL+urlPath, nil)
+	req.Header.Set("Authorization", fmt.Sprintf("Bearer %s", token))
+	if err != nil {
+		t.Fatal(err)
+	}
+	rs, err := ts.Client().Do(req)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	defer rs.Body.Close()
+
+	body, err := io.ReadAll(rs.Body)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	body = bytes.TrimSpace(body)
+	return rs.StatusCode, rs.Header, body
+}
+
+func cpFile(t *testing.T, src string, dst string) {
+	var srcfd *os.File
+	var dstfd *os.File
+	var err error
+	var srcinfo os.FileInfo
+	srcfd, err = os.Open(src)
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer srcfd.Close()
+	dstfd, err = os.Create(dst)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	defer dstfd.Close()
+	_, err = io.Copy(dstfd, srcfd)
+	if err != nil {
+		t.Fatal(err)
+	}
+	srcinfo, err = os.Stat(src)
+	if err != nil {
+		t.Fatal(err)
+	}
+	err = os.Chmod(dst, srcinfo.Mode())
+	if err != nil {
+		t.Fatal(err)
+	}
+}
+
+// cpFolders - Copy folders recursively
+// func cpFolders(t *testing.T, src string, dst string) {
+// 	var err error
+// 	var fds []fs.DirEntry
+// 	var srcinfo os.FileInfo
+
+// 	srcinfo, err = os.Stat(src)
+// 	if err != nil {
+// 		t.Fatal(err)
+// 	}
+
+// 	err = os.MkdirAll(dst, srcinfo.Mode())
+// 	if err != nil {
+// 		t.Fatal(err)
+// 	}
+
+// 	fds, err = os.ReadDir(src)
+// 	if err != nil {
+// 		t.Fatal(err)
+// 	}
+
+// 	for _, fd := range fds {
+// 		srcfp := path.Join(src, fd.Name())
+// 		dstfp := path.Join(dst, fd.Name())
+// 		if fd.IsDir() {
+// 			cpFolders(t, srcfp, dstfp)
+// 		} else {
+// 			cpFile(t, srcfp, dstfp)
+// 		}
+// 	}
+// }
+
+func mkDir(t *testing.T, fp string) {
+	err := os.MkdirAll(fp, os.ModePerm)
+	if err != nil {
+		t.Fatal(err)
+	}
+}
+
+func readTestFile(t *testing.T, fp string) []byte {
+	f, err := os.ReadFile(fp)
+	if err != nil {
+		t.Fatal(err)
+	}
+	return f
+}
+
+func readTestFileAsBase64(t *testing.T, fp string) string {
+	f, err := os.ReadFile(fp)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	return base64.StdEncoding.EncodeToString(f)
+}
+
+func listDir(t *testing.T, fp string, list bool) []string {
+	var filePaths []string
+	err := filepath.Walk(fp, func(path string, info os.FileInfo, err error) error {
+		if list {
+			t.Logf("File (Directory: %t)=> %s", info.IsDir(), path)
+		} else {
+			if !info.IsDir() {
+				filePaths = append(filePaths, path)
+			}
+		}
+		return nil
+	})
+	if err != nil {
+		t.Fatal(err)
+	}
+	return filePaths
+}
+
+func IsDirEmpty(t *testing.T, name string) bool {
+	f, err := os.Open(name)
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer f.Close()
+
+	// read in ONLY one file
+	_, err = f.Readdir(1)
+
+	// and if the file is EOF... well, the dir is empty.
+	return err == io.EOF
+}
+
+func containsSub(s []string, str string) bool {
+	for _, v := range s {
+		if strings.Contains(v, str) {
+			return true
+		}
+	}
+
+	return false
+}

internal/middlewares/auth.go

@@ -0,0 +1,28 @@
+package middlewares
+
+import (
+	"gosimplenpm/internal/config"
+	"net/http"
+	"strings"
+)
+
+func AuthMiddleware(cfg config.Config) func(http.HandlerFunc) http.HandlerFunc {
+	return func(next http.HandlerFunc) http.HandlerFunc {
+		return func(w http.ResponseWriter, r *http.Request) {
+			// get headers
+			authHeader := r.Header.Get("Authorization")
+			authFields := strings.Fields(authHeader)
+			if len(authFields) != 2 || strings.ToLower(authFields[0]) != "bearer" {
+				http.Error(w, "Authentication Error", http.StatusForbidden)
+				return
+			}
+			token := authFields[1]
+			if token != cfg.Token {
+				http.Error(w, "Authentication Error", http.StatusForbidden)
+				return
+			}
+
+			next(w, r)
+		}
+	}
+}

internal/middlewares/auth_test.go

@@ -0,0 +1,99 @@
+package middlewares
+
+import (
+	"bytes"
+	"gosimplenpm/internal/config"
+	"io"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+
+	"github.com/gorilla/mux"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestUnitMAuthMiddleware(t *testing.T) {
+
+	router := mux.NewRouter()
+	handlerStr := []byte("Logic\n")
+
+	hFunc := func(w http.ResponseWriter, e *http.Request) {
+		_, err := w.Write(handlerStr)
+		if err != nil {
+			t.Fatalf("Failed writing HTTP response: %v", err)
+		}
+	}
+
+	cfg := config.Config{
+		RepoDir: "",
+		Token:   "MyToken",
+	}
+
+	router.HandleFunc("/", AuthMiddleware(cfg)(hFunc))
+
+	t.Run("return `Status Foribben` if there is no token", func(t *testing.T) {
+		req := httptest.NewRequest(http.MethodGet, "/", nil)
+		wrt := httptest.NewRecorder()
+
+		req.Header.Set("Authorization", "")
+
+		router.ServeHTTP(wrt, req)
+
+		rs := wrt.Result()
+
+		assert.Equal(t, rs.StatusCode, http.StatusForbidden)
+
+		defer rs.Body.Close()
+		body, err := io.ReadAll(rs.Body)
+		if err != nil {
+			t.Fatal(err)
+		}
+		bytes.TrimSpace(body)
+
+		assert.Equal(t, string(body), "Authentication Error\n")
+	})
+
+	t.Run("return `Status Foribben` if the Authorization field is not set properly", func(t *testing.T) {
+		req := httptest.NewRequest(http.MethodGet, "/", nil)
+		wrt := httptest.NewRecorder()
+
+		req.Header.Set("Authorization", "Secret other")
+
+		router.ServeHTTP(wrt, req)
+
+		rs := wrt.Result()
+
+		assert.Equal(t, rs.StatusCode, http.StatusForbidden)
+
+		defer rs.Body.Close()
+		body, err := io.ReadAll(rs.Body)
+		if err != nil {
+			t.Fatal(err)
+		}
+		bytes.TrimSpace(body)
+
+		assert.Equal(t, string(body), "Authentication Error\n")
+	})
+
+	t.Run("return `Status Foribben` if the token is incorrect", func(t *testing.T) {
+		req := httptest.NewRequest(http.MethodGet, "/", nil)
+		wrt := httptest.NewRecorder()
+
+		req.Header.Set("Authorization", "Bearer incorrectToken")
+
+		router.ServeHTTP(wrt, req)
+
+		rs := wrt.Result()
+
+		assert.Equal(t, rs.StatusCode, http.StatusForbidden)
+
+		defer rs.Body.Close()
+		body, err := io.ReadAll(rs.Body)
+		if err != nil {
+			t.Fatal(err)
+		}
+		bytes.TrimSpace(body)
+
+		assert.Equal(t, string(body), "Authentication Error\n")
+	})
+}

internal/middlewares/logRequest.go

@@ -0,0 +1,29 @@
+package middlewares
+
+import (
+	"net/http"
+	"net/http/httputil"
+
+	"github.com/sirupsen/logrus"
+)
+
+func LogMiddleware(lg *logrus.Logger) func(http.Handler) http.Handler {
+	return func(next http.Handler) http.Handler {
+		return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+			lg.Debugf("%s - %s - %s", r.Method, r.URL, r.Host)
+
+			hasBody := false
+			if r.Method == "PUT" {
+				hasBody = true
+			}
+
+			requestDump, err := httputil.DumpRequest(r, hasBody)
+			if err != nil {
+				lg.Debugln(err)
+			}
+			lg.Debugln("RequestDump: ", string(requestDump))
+
+			next.ServeHTTP(w, r)
+		})
+	}
+}

internal/serviceidos/responseidos.go

@@ -0,0 +1,118 @@
+package serviceidos
+
+type IndexJsonAttachments struct {
+	ContentType string `json:"content_type"`
+	Data        string `json:"data"`
+	Length      int    `json:"length"`
+}
+
+type IndexJsonDist struct {
+	Integrity    string `json:"integrity"`
+	Shasum       string `json:"shasum"`
+	Tarball      string `json:"tarball"`
+	FileCount    int    `json:"fileCount"`
+	UnpackedSize int    `json:"unpackedSize"`
+}
+
+type IndexJsonRepository struct {
+	Type string `json:"type"`
+	Url  string `json:"url"`
+	// Only used if the package.json is not in the root folder of the url
+	Directory string `json:"directory"`
+}
+
+type IndexJsonEngines struct {
+	NodeVersion string `json:"node,omitempty"`
+	NpmVersion  string `json:"npm,omitempty"`
+}
+
+type IndexJsonBugs struct {
+	Url   string `json:"url,omitempty"`
+	Email string `json:"email,omitempty"`
+}
+
+type IndexJsonAuthor struct {
+	Url   string `json:"url,omitempty"`
+	Name  string `json:"name,omitempty"`
+	Email string `json:"email,omitempty"`
+}
+
+// https://docs.npmjs.com/cli/v10/configuring-npm/package-json
+// https://github.com/npm/registry/blob/master/docs/responses/package-metadata.md
+type IndexJsonVersions struct {
+	Name                 string                     `json:"name"`
+	Version              string                     `json:"version"`
+	Description          string                     `json:"description"`
+	Main                 string                     `json:"main,omitempty"`
+	Scripts              map[string]string          `json:"scripts,omitempty"`
+	Author               string                     `json:"author,omitempty"`
+	License              string                     `json:"license"`
+	Repository           IndexJsonRepository        `json:"repository,omitempty"`
+	Files                []string                   `json:"files,omitempty"`
+	Homepage             string                     `json:"homepage,omitempty"`
+	Readme               string                     `json:"readme,omitempty"`
+	ReadmeFilename       string                     `json:"readmeFilename,omitempty"`
+	Keywords             []string                   `json:"keywords,omitempty"`
+	ID                   string                     `json:"_id"`
+	Contributors         []IndexJsonAuthor          `json:"contributors,omitempty"`
+	Maintainers          []IndexJsonAuthor          `json:"maintainers.omitempty"`
+	Bugs                 IndexJsonBugs              `json:"bugs,omitempty"`
+	Bin                  map[string]string          `json:"bin"`
+	OperatingSystem      []string                   `json:"os,omitempty"`
+	Cpu                  []string                   `json:"cpu,omitempty"`
+	Engines              IndexJsonEngines           `json:"engines,omitempty"`
+	NodeVersion          string                     `json:"_nodeVersion"`
+	NpmVersion           string                     `json:"_npmVersion"`
+	Dist                 IndexJsonDist              `json:"dist"`
+	Dependencies         map[string]string          `json:"dependencies,omitempty"`
+	DevDependencies      map[string]string          `json:"devDependencies,omitempty"`
+	PeerDependencies     map[string]string          `json:"peerDependencies,omitempty"`
+	PeerDependenciesMeta map[string]map[string]bool `json:"peerDependenciesMeta,omitempty"`
+	BundleDependencies   []string                   `json:"bundleDependencies,omitempty"`
+	Resolutions          map[string]string          `json:"resolutions,omitempty"`
+}
+
+type IndexJson struct {
+	ID             string                          `json:"_id"`
+	Name           string                          `json:"name"`
+	Description    string                          `json:"description"`
+	Readme         string                          `json:"readme,omitempty"`
+	ReadmeFilename string                          `json:"readmeFilename,omitempty"`
+	DistTags       map[string]string               `json:"dist-tags"`
+	TimesPackage   map[string]string               `json:"time"`
+	Versions       map[string]IndexJsonVersions    `json:"versions"`
+	Access         string                          `json:"access"`
+	Attachments    map[string]IndexJsonAttachments `json:"_attachments"`
+}
+
+type IndexJsonAbridgedVersions struct {
+	HasShrinkWrap bool          `json:"_hasShrinkwrap"`
+	Dist          IndexJsonDist `json:"dist"`
+	Name          string        `json:"name"`
+	Version       string        `json:"version"`
+}
+
+// https://github.com/npm/registry/blob/master/docs/responses/package-metadata.md
+type IndexJsonAbridged struct {
+	DistTags map[string]string                    `json:"dist-tags"`
+	Modified string                               `json:"modified"`
+	Name     string                               `json:"name"`
+	Versions map[string]IndexJsonAbridgedVersions `json:"versions"`
+}
+
+type TagPutResponse struct {
+	Ok       bool   `json:"ok"`
+	ID       string `json:"id"`
+	DistTags string `json:"dist-tags"`
+}
+
+type TagDeleteResponse struct {
+	Ok       bool   `json:"ok"`
+	ID       string `json:"id"`
+	DistTags string `json:"dist-tags"`
+}
+
+type PublishPutResponse struct {
+	Ok   bool   `json:"ok"`
+	Name string `json:"package_name"`
+}

internal/storage/fs.go

@@ -0,0 +1,180 @@
+package storage
+
+import (
+	"encoding/base64"
+	"encoding/json"
+	"fmt"
+	"io"
+	"io/fs"
+	"os"
+	"path"
+	"strings"
+
+	"gosimplenpm/internal/serviceidos"
+	"path/filepath"
+
+	"github.com/sirupsen/logrus"
+)
+
+type FSStorage struct{}
+
+func (f *FSStorage) GetIndexJsonFromStore(packageName string, registryPath string, log *logrus.Logger) (string, bool, error) {
+	fileToServe := ""
+	found := false
+
+	err := filepath.WalkDir(registryPath, func(fp string, info fs.DirEntry, e error) error {
+		if strings.Contains(fp, path.Join(packageName, "index.json")) {
+			fileToServe = fp
+			found = true
+		}
+		return e
+	})
+
+	if err != nil {
+		log.WithFields(logrus.Fields{
+			"function": "get-index-json-from-store",
+		}).Errorf("List files error: +%v\n", err)
+		return fileToServe, found, err
+	}
+
+	if fileToServe == "" && !found {
+		fileToServe = path.Join(registryPath, packageName, "index.json")
+	}
+
+	return fileToServe, found, nil
+}
+
+func (f *FSStorage) GetTarFromStore(packageName string, tarFileName string, registryPath string, log *logrus.Logger) (string, error) {
+	fileToServe := ""
+
+	err := filepath.WalkDir(registryPath, func(fp string, info fs.DirEntry, e error) error {
+		if strings.Contains(fp, path.Join(packageName, tarFileName)) {
+			fileToServe = fp
+		}
+		return e
+	})
+
+	if err != nil {
+		log.WithFields(logrus.Fields{
+			"function": "get-tar-from-store",
+		}).Errorf("List files error: +%v\n", err)
+		return fileToServe, err
+	}
+
+	if fileToServe == "" {
+		return fileToServe, fmt.Errorf("file %s is not found for package %s", tarFileName, packageName)
+	}
+
+	file, err := os.Open(fileToServe)
+	if err != nil {
+		log.WithFields(logrus.Fields{
+			"function": "get-tar-from-store",
+		}).Errorf("Open error: %s\n", fileToServe)
+		return "", err
+	}
+	defer file.Close()
+
+	bs, err := io.ReadAll(file)
+	if err != nil {
+		log.WithFields(logrus.Fields{
+			"function": "get-tar-from-store",
+		}).Errorf("File Read error: %s\n", fileToServe)
+		return "", err
+	}
+
+	return base64.StdEncoding.EncodeToString(bs), err
+}
+
+func (f *FSStorage) ReadIndexJson(fPath string, res *serviceidos.IndexJson, log *logrus.Logger) error {
+	jsonFile, err := os.Open(fPath)
+	if err != nil {
+		log.WithFields(logrus.Fields{
+			"function": "read-index-json",
+		}).Errorf("File Not found: %s\n", fPath)
+		return err
+	}
+
+	defer jsonFile.Close()
+
+	err = json.NewDecoder(jsonFile).Decode(res)
+	if err != nil {
+		log.WithFields(logrus.Fields{
+			"function": "read-index-json",
+		}).Errorf("Unmarshalerror: %+v\n", err)
+		return err
+	}
+
+	return nil
+}
+
+func (f *FSStorage) WriteIndexJson(fPath string, res *serviceidos.IndexJson, log *logrus.Logger) error {
+	// Need to create the directory first
+	parent := path.Dir(fPath)
+	err := os.MkdirAll(parent, os.ModePerm)
+	if err != nil {
+		log.WithFields(logrus.Fields{
+			"function": "write-index-json",
+		}).Errorf("Folder (%s) creation failed.\n", fPath)
+		return err
+	}
+
+	// Create the file
+	jsonFile, err := os.Create(fPath)
+
+	if err != nil {
+		log.WithFields(logrus.Fields{
+			"function": "write-index-json",
+		}).Errorf("Creation error for path(%s): %+v\n ", fPath, err)
+		return err
+	}
+
+	defer jsonFile.Close()
+
+	err = json.NewEncoder(jsonFile).Encode(res)
+	if err != nil {
+		log.WithFields(logrus.Fields{
+			"function": "write-index-json",
+		}).Debugf("Marshalerror: %+v\n", err)
+		return err
+	}
+
+	return nil
+}
+
+func (f *FSStorage) WritePackageToStore(fPath string, data string, log *logrus.Logger) error {
+	dec, err := base64.StdEncoding.DecodeString(data)
+	if err != nil {
+		log.WithFields(logrus.Fields{
+			"function": "write-package-to-store",
+		}).Errorf("Base64 Decode error: %+v\n", err)
+		return err
+	}
+
+	dataFile, err := os.Create(fPath)
+	if err != nil {
+		log.WithFields(logrus.Fields{
+			"function": "write-package-to-store",
+		}).Errorf("Creation error: %s\n", fPath)
+		return err
+	}
+
+	defer dataFile.Close()
+
+	_, err = dataFile.Write(dec)
+	if err != nil {
+		log.WithFields(logrus.Fields{
+			"function": "write-package-to-store",
+		}).Errorf("Write error: %s\n", fPath)
+		return err
+	}
+
+	err = dataFile.Sync()
+	if err != nil {
+		log.WithFields(logrus.Fields{
+			"function": "write-package-to-store",
+		}).Errorf("Sync error: %s\n", fPath)
+		return err
+	}
+
+	return nil
+}

internal/storage/mockfs.go

@@ -0,0 +1,56 @@
+package storage
+
+import (
+	"gosimplenpm/internal/serviceidos"
+
+	"github.com/sirupsen/logrus"
+)
+
+type MockFs struct {
+	calls                     map[string]int
+	GetIndexJsonFromStoreFunc func(packageName string, registryPath string, lg *logrus.Logger) (string, bool, error)
+	GetTarFromStoreFunc       func(packageName string, tarFileName string, registryPath string, lg *logrus.Logger) (string, error)
+	ReadIndexJsonFunc         func(fPath string, res *serviceidos.IndexJson, lg *logrus.Logger) error
+	WriteIndexJsonFunc        func(fPath string, res *serviceidos.IndexJson, lg *logrus.Logger) error
+	WritePackageToStoreFunc   func(fPath string, data string, lg *logrus.Logger) error
+}
+
+func (m *MockFs) GetIndexJsonFromStore(packageName string, registryPath string, lg *logrus.Logger) (string, bool, error) {
+	if len(m.calls) == 0 {
+		m.calls = make(map[string]int)
+	}
+	m.calls["GetIndexJsonFromStore"] += 1
+	return m.GetIndexJsonFromStoreFunc(packageName, registryPath, lg)
+}
+
+func (m *MockFs) GetTarFromStore(packageName string, tarFileName string, registryPath string, lg *logrus.Logger) (string, error) {
+	if len(m.calls) == 0 {
+		m.calls = make(map[string]int)
+	}
+	m.calls["GetTarFromStore"] += 1
+	return m.GetTarFromStoreFunc(packageName, tarFileName, registryPath, lg)
+}
+
+func (m *MockFs) ReadIndexJson(fPath string, res *serviceidos.IndexJson, lg *logrus.Logger) error {
+	if len(m.calls) == 0 {
+		m.calls = make(map[string]int)
+	}
+	m.calls["ReadIndexJson"] += 1
+	return m.ReadIndexJsonFunc(fPath, res, lg)
+}
+
+func (m *MockFs) WriteIndexJson(fPath string, res *serviceidos.IndexJson, lg *logrus.Logger) error {
+	if len(m.calls) == 0 {
+		m.calls = make(map[string]int)
+	}
+	m.calls["WriteIndexJson"] += 1
+	return m.WriteIndexJsonFunc(fPath, res, lg)
+}
+
+func (m *MockFs) WritePackageToStore(fPath string, data string, lg *logrus.Logger) error {
+	if len(m.calls) == 0 {
+		m.calls = make(map[string]int)
+	}
+	m.calls["WritePackageToStore"] += 1
+	return m.WritePackageToStoreFunc(fPath, data, lg)
+}

internal/storage/storage.go

@@ -0,0 +1,15 @@
+package storage
+
+import (
+	"gosimplenpm/internal/serviceidos"
+
+	"github.com/sirupsen/logrus"
+)
+
+type Storage interface {
+	GetIndexJsonFromStore(packageName string, registryPath string, lg *logrus.Logger) (string, bool, error)
+	GetTarFromStore(packageName string, tarFileName string, registryPath string, lg *logrus.Logger) (string, error)
+	ReadIndexJson(fPath string, res *serviceidos.IndexJson, lg *logrus.Logger) error
+	WriteIndexJson(fPath string, res *serviceidos.IndexJson, lg *logrus.Logger) error
+	WritePackageToStore(fPath string, data string, lg *logrus.Logger) error
+}

main.go

@@ -1,13 +1,35 @@
 package main
 
 import (
-	"log"
+	"gosimplenpm/cmd/gosimplenpm"
-	"net/http"
 )
 
 func main() {
-	app := new(application)
+	gosimplenpm.Execute()
-	log.Print("Starting server on port 4000")
-	err := http.ListenAndServe(":4000", app.Routes())
-	log.Fatal(err)
 }
+
+// func main() {
+// 	log := &logrus.Logger{
+// 		Out:   os.Stdout,
+// 		Level: logrus.DebugLevel,
+// 		Formatter: &logrus.TextFormatter{
+// 			FullTimestamp:   true,
+// 			TimestampFormat: "2009-01-02 15:15:15",
+// 		},
+// 	}
+
+// 	var cfg config.Config
+// 	err := config.LoadConfiguration("userdata/config.json", &cfg)
+// 	if err != nil {
+// 		log.Fatalf("Config is not loaded: %+v\n", err)
+// 	}
+
+// 	app := &gosimplenpm.Application{
+// 		Conf:   cfg,
+// 		Logger: log,
+// 	}
+
+// 	log.Infoln("Starting server on port 4000")
+// 	err = http.ListenAndServe(":4000", app.Routes())
+// 	log.Fatal(err)
+// }

storage/fs.go

@@ -1,33 +0,0 @@
-package storage
-
-import (
-	"fmt"
-	"io/fs"
-	"path"
-	"strings"
-
-	"path/filepath"
-)
-
-func GetPackageFromStore(packageName string) (string, error) {
-	fileToServe := ""
-	searchDir, err := filepath.Abs("./examples")
-	if err != nil {
-		fmt.Printf("File repo not found: +%v/n", err)
-		return "", err
-	}
-
-	err = filepath.WalkDir(searchDir, func(fp string, info fs.DirEntry, e error) error {
-		if strings.Contains(fp, path.Join(packageName, "index.json")) {
-			fileToServe = fp
-		}
-		return e
-	})
-
-	if err != nil {
-		fmt.Printf("List files error: +%v/n", err)
-		return "", err
-	}
-
-	return fileToServe, nil
-}

tests/data/@ookusanya/simplepackone/index.json

@@ -0,0 +1 @@
+{"_id":"@ookusanya/simplepackone","name":"@ookusanya/simplepackone","description":"This is a very rough implementation of a private npm registry.","dist-tags":{"latest":"1.2.0"},"versions":{"1.0.0":{"name":"@ookusanya/simplepackone","version":"1.0.0","description":"This is a very rough implementation of a private npm registry.","main":"index.js","scripts":{"test":"echo \"Error: no test specified\" \u0026\u0026 exit 1"},"license":"MIT","files":null,"readme":"# Gosimplenpm\n\nThis is a very rough implementation of a private npm registry.\n\n# Features\n\nTODO...\n\n# Enhancements\n\nTODO...\n\n# Work List\n\nTODO...","_id":"@ookusanya/simplepackone@1.0.0","_nodeVersion":"16.20.0","_npmVersion":"8.19.4","dist":{"integrity":"sha512-x9cAEHDPM0dLhdyd8baWLTNYskr41QXLNv5HS5WNDg1CVzwcMaAU+N9lYVuOvLf/xPHLielWmX+wLXEtRWQvGw==","shasum":"545a7737b59b1a6f064339a4ebe056e8a9b1511d","tarball":"http://localhost:4000/@ookusanya/simplepackone/-/@ookusanya/simplepackone-1.0.0.tgz"},"dependencies":{"eslint":"^7.x"}},"1.2.0":{"name":"@ookusanya/simplepackone","version":"1.2.0","description":"This is a very rough implementation of a private npm registry.","main":"index.js","scripts":{"test":"echo \"Error: no test specified\" \u0026\u0026 exit 1"},"license":"MIT","files":null,"readme":"# Gosimplenpm\n\nThis is a very rough implementation of a private npm registry.\n\n# Features\n\nTODO...\n\n# Enhancements\n\nTODO...\n\n# Work List\n\nTODO...","_id":"@ookusanya/simplepackone@1.2.0","_nodeVersion":"16.20.0","_npmVersion":"8.19.4","dist":{"integrity":"sha512-coOiU+ywV/do/+HwK91mfuei9491yfQUedLWjspAjDa58RniJvQNTF/cXDp/sooVdpjgEbCqKVyLOju6C1i3pw==","shasum":"1adafdbe8878372c9f4b554bf30d5bfb1b7896c5","tarball":"http://localhost:4000/@ookusanya%2Fsimplepackone/-/@ookusanya%2Fsimplepackone-1.2.0.tgz"},"dependencies":{"eslint":"^7.x","mocha":"^10.x","uuid":"^9.x"}}},"access":"","_attachments":{"@ookusanya/simplepackone-1.2.0.tgz":{"content_type":"application/octet-stream","data":"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","length":1089}}}