initial go backend

Lab01/app/database/database.go

@@ -0,0 +1,23 @@
+package database
+
+import (
+	"fmt"
+	"gorm.io/driver/sqlite"
+	"gorm.io/gorm"
+)
+
+func migrateInitial(orm *gorm.DB) {
+	err := orm.AutoMigrate(&User{})
+	if err != nil {
+		fmt.Println(fmt.Errorf("failed to migrate User"))
+	}
+}
+
+func (db *Database) Initialize() {
+	orm, err := gorm.Open(sqlite.Open(db.Location), &gorm.Config{})
+	if err != nil {
+		fmt.Println(fmt.Errorf("failed to connect Database"))
+	}
+	migrateInitial(orm)
+	db.ORM = orm
+}