package handler

import (
	"fmt"
	"net/http"
	"net/url"

	"github.com/gorilla/mux"
	"github.com/sirupsen/logrus"

	"gosimplenpm/config"
	"gosimplenpm/storage"
)

func GetPackage(lg *logrus.Logger, cfg config.Config) 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 := storage.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)
	}
}