refactor asset with embed tool

cmd/gonic/main.go

@@ -0,0 +1,67 @@
+package main
+
+import (
+	"flag"
+	"log"
+	"os"
+
+	"github.com/jinzhu/gorm"
+	_ "github.com/jinzhu/gorm/dialects/sqlite"
+	"github.com/peterbourgon/ff"
+
+	"github.com/sentriz/gonic/server"
+)
+
+const (
+	programName = "gonic"
+	programVar  = "GONIC"
+)
+
+func main() {
+	set := flag.NewFlagSet(programName, flag.ExitOnError)
+	listenAddr := set.String(
+		"listen-addr", "0.0.0.0:6969",
+		"listen address (optional)")
+	musicPath := set.String(
+		"music-path", "",
+		"path to music")
+	dbPath := set.String(
+		"db-path", "gonic.db",
+		"path to database (optional)")
+	_ = set.String(
+		"config-path", "",
+		"path to config (optional)")
+	err := ff.Parse(set, os.Args[1:],
+		ff.WithConfigFileFlag("config-path"),
+		ff.WithConfigFileParser(ff.PlainParser),
+		ff.WithEnvVarPrefix(programVar),
+	)
+	if err != nil {
+		log.Fatalf("error parsing args: %v\n", err)
+	}
+	if _, err := os.Stat(*musicPath); os.IsNotExist(err) {
+		log.Fatal("please provide a valid music directory")
+	}
+	db, err := gorm.Open("sqlite3", *dbPath)
+	if err != nil {
+		log.Fatalf("error opening database: %v\n", err)
+	}
+	s := server.New(
+		db,
+		*musicPath,
+		*listenAddr,
+		"server/assets/",
+	)
+	err = s.SetupAdmin()
+	if err != nil {
+		log.Fatalf("error setting up admin routes: %v\n", err)
+	}
+	err = s.SetupSubsonic()
+	if err != nil {
+		log.Fatalf("error setting up subsonic routes: %v\n", err)
+	}
+	log.Printf("starting server at %s", *listenAddr)
+	if err := s.ListenAndServe(); err != nil {
+		log.Fatalf("error starting server: %v\n", err)
+	}
+}