Initialize AutoLibrary website with Gitea deployment

backend/database/bulletins_database/database.go

@@ -0,0 +1,50 @@
+package bulletins_database
+
+import (
+	"log"
+
+	"autolibrary.top/webserver/backend/models/bulletins_model"
+
+	"gorm.io/driver/sqlite"
+	"gorm.io/gorm"
+)
+
+var DB *gorm.DB // global bulletins database instance
+
+func InitDB(dsn string) error {
+	var err error
+
+	DB, err = gorm.Open(sqlite.Open(dsn), &gorm.Config{})
+	if err != nil {
+		log.Printf("[E] unable to connect to bulletins database: %v", err)
+		return err
+	}
+
+	err = DB.AutoMigrate(
+		&bulletins_model.Bulletin{},
+	)
+	if err != nil {
+		log.Printf("[E] bulletins database migration failed: %v", err)
+		return err
+	}
+
+	log.Printf("[I] bulletins database initialization completed")
+	return nil
+}
+
+func CloseDB() error {
+	sqlDB, err := DB.DB()
+	if err != nil {
+		log.Printf("[E] unable to get bulletins database connection: %v", err)
+		return err
+	}
+
+	err = sqlDB.Close()
+	if err != nil {
+		log.Printf("[E] unable to close bulletins database connection: %v", err)
+		return err
+	}
+
+	log.Printf("[I] bulletins database connection closed")
+	return nil
+}