refactor to improve database operability in hwsauth

hwsauth/db.go

@@ -1,27 +1,22 @@
 package hwsauth
 
 import (
-	"context"
-	"database/sql"
+	"git.haelnorr.com/h/golib/jwt"
 )
 
 // DBTransaction represents a database transaction that can be committed or rolled back.
-// This interface can be implemented by standard library sql.Tx, or by ORM transactions
-// from libraries like bun, gorm, sqlx, etc.
-type DBTransaction interface {
-	Commit() error
-	Rollback() error
-}
+// This is an alias to jwt.DBTransaction.
+//
+// Standard library *sql.Tx implements this interface automatically.
+// ORM transactions (GORM, Bun, etc.) should also implement this interface.
+type DBTransaction = jwt.DBTransaction
 
-// DBConnection represents a database connection that can begin transactions.
-// This interface can be implemented by standard library sql.DB, or by ORM connections
-// from libraries like bun, gorm, sqlx, etc.
-type DBConnection interface {
-	BeginTx(ctx context.Context, opts *sql.TxOptions) (DBTransaction, error)
-}
-
-// Ensure *sql.Tx implements DBTransaction
-var _ DBTransaction = (*sql.Tx)(nil)
-
-// Ensure *sql.DB implements DBConnection
-var _ DBConnection = (*sql.DB)(nil)
+// BeginTX is a function type for creating database transactions.
+// This is an alias to jwt.BeginTX.
+//
+// Example:
+//
+//	beginTx := func(ctx context.Context) (hwsauth.DBTransaction, error) {
+//	    return db.BeginTx(ctx, nil)
+//	}
+type BeginTX = jwt.BeginTX