Add flags for db and listening address

main.go

@@ -2,6 +2,7 @@ package main
 
 import (
 	"embed"
+	"flag"
 	"log"
 	"net/http"
 
@@ -36,7 +37,11 @@ func logRequest(r *http.Request) {
 }
 
 func main() {
-	db, err := bolt.Open("vino.db", 0644, nil)
+	dbPath := flag.String("db", "vino.db", "Path to database file")
+	listenAddr := flag.String("listen", "127.0.0.1:7878", "Listening address")
+	flag.Parse()
+
+	db, err := bolt.Open(*dbPath, 0644, nil)
 	if err != nil {
 		log.Fatalln("can't open DB:", err)
 	}
@@ -65,11 +70,9 @@ func main() {
 	http.HandleFunc("/user/", auth.Require(http.HandlerFunc(handler.user), ap))
 	http.HandleFunc("/", auth.Require(http.HandlerFunc(handler.index), ap))
 
-	const listenAddr = ":7878"
-
-	log.Printf("here we go, listening on http://%s", listenAddr)
+	log.Printf("here we go, listening on http://%s", *listenAddr)
 
-	err = http.ListenAndServe(listenAddr, nil)
+	err = http.ListenAndServe(*listenAddr, nil)
 	if err != nil {
 		log.Fatalln("http handler failed:", err)
 	}