restructuring, config and readme

backend/cmd/main.go

@@ -0,0 +1,52 @@
+package main
+
+import (
+	"fmt"
+	"log"
+	"net/http"
+	"os"
+
+	"git.schreifuchs.ch/schreifuchs/ng-blog/backend/internal/config"
+	"git.schreifuchs.ch/schreifuchs/ng-blog/backend/internal/initialize"
+
+	"go-simpler.org/env"
+)
+
+const HELP = "expected 'serve' or 'help' subcommands"
+
+var ENV_OPTS = &env.Options{NameSep: "_"}
+
+func main() {
+	if len(os.Args) < 2 {
+		fmt.Println(HELP)
+		return
+	}
+	switch os.Args[1] {
+	case "serve":
+		serve()
+	case "help":
+		help()
+	default:
+		fmt.Println(HELP)
+		os.Exit(1)
+	}
+}
+
+func serve() {
+	cfg := config.Default()
+
+	if err := env.Load(cfg, ENV_OPTS); err != nil {
+		log.Fatal(err)
+	}
+	log.Println("config loaded")
+
+	mux := initialize.CreateMux(cfg)
+	if err := http.ListenAndServe(fmt.Sprintf(":%d", cfg.Port), mux); err != nil {
+		log.Fatal(err)
+	}
+}
+
+func help() {
+	env.Usage(config.Default(), os.Stdout, ENV_OPTS)
+	os.Exit(0)
+}