refactor: remove pocketbase (#1138)

app/migration/version.go

@@ -0,0 +1,27 @@
+package migration
+
+import (
+	"context"
+	"database/sql"
+	"fmt"
+)
+
+func version(ctx context.Context, db *sql.DB) (int, error) {
+	// get the current version of the database
+	var currentVersion int
+	if err := db.QueryRowContext(ctx, "PRAGMA user_version").Scan(&currentVersion); err != nil {
+		return 0, fmt.Errorf("failed to get current database version: %w", err)
+	}
+
+	return currentVersion, nil
+}
+
+func setVersion(ctx context.Context, db *sql.DB, version int) error {
+	// Update the database version after successful migration
+	_, err := db.ExecContext(ctx, fmt.Sprintf("PRAGMA user_version = %d", version))
+	if err != nil {
+		return fmt.Errorf("failed to update database version: %w", err)
+	}
+
+	return nil
+}