Add "run" command

Signed-off-by: Knut Ahlers <[email protected]>

.gitignore

@@ -0,0 +1 @@
+gh-private-dl

run.go

@@ -0,0 +1,58 @@
+package main
+
+import (
+	"net/http"
+	"strings"
+
+	"github.com/Luzifer/gh-private-dl/privatehub"
+	log "github.com/Sirupsen/logrus"
+	"github.com/gorilla/mux"
+	sparta "github.com/mweagle/Sparta"
+	"github.com/spf13/cobra"
+)
+
+var executionPort string
+
+func init() {
+	cmd := &cobra.Command{
+		Use:   "run",
+		Short: "Run an HTTP server to serve this locally",
+		RunE:  runLocally,
+	}
+
+	cmd.Flags().StringVar(&executionPort, "listen", ":3000", "IP/Port to listen on")
+
+	sparta.CommandLineOptions.Root.AddCommand(cmd)
+}
+
+func runLocally(cmd *cobra.Command, args []string) error {
+	r := mux.NewRouter()
+	r.HandleFunc("/{user}/{repo}/releases/download/{version}/{binary}", handleLocalExecution)
+
+	log.Printf("Starting local webserver on %s", executionPort)
+	return http.ListenAndServe(executionPort, r)
+}
+
+func handleLocalExecution(res http.ResponseWriter, r *http.Request) {
+	vars := mux.Vars(r)
+
+	_, githubToken, ok := r.BasicAuth()
+	if !ok || githubToken == "" {
+		http.Error(res, "You need to provide HTTP basic auth", http.StatusBadRequest)
+		return
+	}
+
+	dlURL, err := privatehub.GetDownloadURL(
+		strings.Join([]string{vars["user"], vars["repo"]}, "/"),
+		vars["version"],
+		vars["binary"],
+		githubToken,
+	)
+
+	if err != nil {
+		http.Error(res, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	http.Redirect(res, r, dlURL, http.StatusFound)
+}