Refactor backend database connection, migration, seed

backend/main.go

@@ -23,14 +23,8 @@ func main() {
 		slog.Warn("Cannot find .env file, using system env variables")
 	}
 
-	adminUser := os.Getenv("ADMIN_USER")
 	adminPass := os.Getenv("ADMIN_PASS")
 
-	if adminUser == "" {
-		slog.Error("Missing ADMIN_USER env variable")
-		os.Exit(1)
-	}
-
 	if adminPass == "" {
 		slog.Error("Missing ADMIN_PASS env variable")
 		os.Exit(1)
@@ -49,11 +43,17 @@ func main() {
 		slog.Error("Databse error", "error", err)
 		os.Exit(1)
 	}
-	db := database(dbConnection)
-	defer db.Close()
+
+	// Migrate database
+	MigrateDatabase(dbConnection)
+	SeedDatabase(dbConnection, adminPass)
+	updateSuperadminPassword(dbConnection, adminPass)
+
+	// db := database(dbConnection)
+	defer dbConnection.Close()
 
 	// Create App
-	app := handlers.NewApp(db, handlers.NewBroker())
+	app := handlers.NewApp(dbConnection, handlers.NewBroker())
 
 	// Create server
 	srv := NewServer(app, "0.0.0.0:7153", "*")