import 'package:drift/drift.dart';
import 'package:uto_manager/infrastructure/database/app_database.dart';

part 'soldier_positions_dao.g.dart';

// The Drift-generated row type for the SoldierPositions table is also named
// `SoldierPosition` (same as our domain entity). We use a typedef here so the
// DAO can refer to the DB row type unambiguously.
typedef SoldierPositionRow = SoldierPosition;

/// Data Access Object for [SoldierPositions] table operations.
@DriftAccessor(tables: [SoldierPositions])
class SoldierPositionsDao extends DatabaseAccessor<AppDatabase> with _$SoldierPositionsDaoMixin {
  SoldierPositionsDao(super.db);

  /// Returns all soldier position rows.
  Future<List<SoldierPositionRow>> getAll() => select(soldierPositions).get();

  /// Returns the position with [positionId], or null if not found.
  Future<SoldierPositionRow?> getById(String positionId) =>
      (select(soldierPositions)..where((t) => t.positionId.equals(positionId))).getSingleOrNull();

  /// Inserts a new position row (insert-or-replace).
  Future<void> upsert(SoldierPositionsCompanion entry) =>
      into(soldierPositions).insertOnConflictUpdate(entry);

  /// Inserts multiple rows in a single transaction.
  Future<void> upsertAll(List<SoldierPositionsCompanion> entries) =>
      batch((b) => b.insertAllOnConflictUpdate(soldierPositions, entries));

  /// Updates an existing position row.
  Future<bool> updatePosition(SoldierPositionsCompanion entry) =>
      update(soldierPositions).replace(entry);

  /// Deletes the position with [positionId].
  Future<int> deletePosition(String positionId) =>
      (delete(soldierPositions)..where((t) => t.positionId.equals(positionId))).go();

  /// Returns a stream that emits all positions whenever the table changes.
  Stream<List<SoldierPositionRow>> watchAll() => select(soldierPositions).watch();
}