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)
}