Initial Email-Forwarder scaffold

main.go

@@ -0,0 +1,57 @@
+package main
+
+import (
+	"embed"
+	"flag"
+	"io/fs"
+	"log"
+	"net/http"
+	"os"
+
+	"emailforwarder/backend"
+)
+
+//go:embed frontend-js/dist/*
+var frontend embed.FS
+
+func main() {
+	runOnce := flag.String("run", "", "einen Umzugs-Job einmalig ausfuehren (Konto-Name oder 'all'), ohne Web-UI")
+	watch := flag.Bool("watch", false, "Delta-Sync in Schleife bis Stop (Cutover-Fenster)")
+	flag.Parse()
+
+	if err := backend.LoadConfig("config.json"); err != nil {
+		log.Fatalf("config: %v", err)
+	}
+	if err := backend.ConnectDB(); err != nil {
+		log.Fatalf("database: %v", err)
+	}
+	if err := backend.InitAuth(); err != nil {
+		log.Fatalf("auth: %v", err)
+	}
+
+	// CLI-Modus: ohne Web laufen lassen (Cronjob / Cutover).
+	if *runOnce != "" {
+		must(backend.RunMigration(*runOnce, *watch))
+		return
+	}
+
+	dist, err := fs.Sub(frontend, "frontend-js/dist")
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	mux := http.NewServeMux()
+	mux.Handle("/static/", http.StripPrefix("/static/", http.FileServer(http.FS(dist))))
+	backend.RegisterRoutes(mux)
+
+	addr := backend.Cfg.Bind + ":" + backend.Cfg.Port
+	log.Printf("Email-Forwarder listening on %s", addr)
+	log.Fatal(http.ListenAndServe(addr, backend.AuthMiddleware(mux)))
+}
+
+func must(err error) {
+	if err != nil {
+		log.Print(err)
+		os.Exit(1)
+	}
+}