Added ability to bind to custom port

Author: owais

cmd/server/main.go

@@ -14,6 +14,7 @@ import (
 func main() {
 
 	var slackToken string
+	var port string
 
 	app := cli.NewApp()
 	app.Name = "RTTD"
@@ -27,6 +28,13 @@ func main() {
 			Destination: &slackToken,
 			EnvVar:      "SLACK_API_TOKEN",
 		},
+		cli.StringFlag{
+			Name:        "port",
+			Usage:       "PORT to start web server on",
+			Destination: &port,
+			EnvVar:      "PORT",
+			Value:       "5000",
+		},
 	}
 
 	app.Action = func(c *cli.Context) error {
@@ -35,7 +43,7 @@ func main() {
 		}
 		endpoint := "https://slack.com/api/users.list?token=" + slackToken
 		team := slack.NewTeam(endpoint)
-		http.Start(team)
+		http.Start(team, port)
 		return nil
 
 	}

pkg/api/http/handlers.go

@@ -14,9 +14,6 @@ import (
 	_ "github.com/owais/RTTD/static" // bundle assets
 )
 
-var port string
-var slackToken string
-
 type handler func(t teams.Team, w http.ResponseWriter, r *http.Request)
 
 func withTeams(team teams.Team, f handler) http.HandlerFunc {
@@ -69,13 +66,12 @@ func fetchFromSlack(t teams.Team, w http.ResponseWriter, r *http.Request) {
 	w.Write(contents)
 }
 
-func Start(team teams.Team) {
+func Start(team teams.Team, port string) {
 	http.Handle("/static/", http.StripPrefix("/static/", http.FileServer(parcello.Root("/"))))
 
 	http.HandleFunc("/api/slack/fetch/", withTeams(team, fetchFromSlack))
 	http.HandleFunc("/", withTeams(team, indexHandler))
 
-	port = "5000"
 	fmt.Println("Starting server on port " + port)
 	http.ListenAndServe(":"+port, nil)
 }