Move code to src folder

src/database/connection.go

@@ -0,0 +1,27 @@
+package database
+
+import (
+	"log"
+	"sheetless-server/models"
+
+	"gorm.io/driver/sqlite"
+	"gorm.io/gorm"
+)
+
+var DB *gorm.DB
+
+func InitDatabase() {
+	var err error
+	DB, err = gorm.Open(sqlite.Open("sheetless.db"), &gorm.Config{})
+	if err != nil {
+		log.Fatal("Failed to connect to database:", err)
+	}
+
+	// Auto migrate the schema
+	err = DB.AutoMigrate(&models.User{}, &models.MusicSheet{})
+	if err != nil {
+		log.Fatal("Failed to migrate database:", err)
+	}
+
+	log.Println("Database connected and migrated successfully")
+}