feat(niki): add migrate flag to main for running migrations

main.go

@@ -1,6 +1,8 @@
 package main
 
 import (
+	"flag"
+
 	"git.gocasts.ir/ebhomengo/niki/adapter/redis"
 	"git.gocasts.ir/ebhomengo/niki/config"
 	httpserver "git.gocasts.ir/ebhomengo/niki/delivery/http_server"
@@ -17,9 +19,17 @@ type Dependencies struct {
 	initial.Services
 }
 
+func parseFlags() bool {
+	migrateFlag := flag.Bool("migrate", false, "perform database migration")
+	flag.Parse()
+	return *migrateFlag
+}
+
 func main() {
+	migrate := parseFlags()
+
 	cfg := config.C()
-	db := initDatabase(cfg)
+	db := initDatabase(cfg, migrate)
 	redisAdapter := initRedis(cfg)
 
 	dependencies := initDependencies(cfg, redisAdapter, db)
@@ -68,8 +78,10 @@ func initAndRunServer(cfg config.Config, dependencies *Dependencies) {
 	server.Serve()
 }
 
-func initDatabase(cfg config.Config) *mysql.DB {
+func initDatabase(cfg config.Config, migrate bool) *mysql.DB {
+	if migrate {
 		migrateDatabase(cfg)
+	}
 
 	return initial.InitMysql(cfg)
 }