import 'package:drift/drift.dart';
import 'package:drift_flutter/drift_flutter.dart';
import 'package:path_provider/path_provider.dart';

part 'app_database.g.dart';

@DataClassName('ProductRow')
class Products extends Table {
  TextColumn get id => text()();

  TextColumn get name => text()();

  TextColumn get category => text()();

  IntColumn get stockQuantity => integer()();

  IntColumn get lowStockThreshold => integer()();

  IntColumn get priceInCents => integer()();

  TextColumn get imagePath => text().nullable()();

  BoolColumn get active => boolean().withDefault(const Constant(true))();

  @override
  Set<Column> get primaryKey => {id};
}

@DataClassName('BarTabRow')
class BarTabs extends Table {
  TextColumn get id => text()();

  TextColumn get customerName => text()();

  TextColumn get status => text().withDefault(const Constant('open'))();

  DateTimeColumn get openedAt => dateTime()();

  DateTimeColumn get closedAt => dateTime().nullable()();

  @override
  Set<Column> get primaryKey => {id};
}

@DataClassName('TabItemRow')
class TabItems extends Table {
  TextColumn get id => text()();

  TextColumn get tabId => text().references(
    BarTabs,
    #id,
    onDelete: KeyAction.cascade,
  )();

  TextColumn get productId => text().references(
    Products,
    #id,
  )();

  TextColumn get productName => text()();

  IntColumn get quantity => integer()();

  IntColumn get unitPriceInCents => integer()();

  DateTimeColumn get createdAt => dateTime()();

  @override
  Set<Column> get primaryKey => {id};
}

@DriftDatabase(
  tables: [
    Products,
    BarTabs,
    TabItems,
  ],
)
class AppDatabase extends _$AppDatabase {
  AppDatabase([QueryExecutor? executor]) : super(executor ?? _openConnection());

  @override
  int get schemaVersion => 3;

  @override
  MigrationStrategy get migration {
    return MigrationStrategy(
      onCreate: (migrator) async {
        await migrator.createAll();
      },
      onUpgrade: (migrator, from, to) async {
        if (from < 2) {
          await migrator.createTable(barTabs);
          await migrator.createTable(tabItems);
        }

        if (from < 3) {
          await migrator.addColumn(products, products.imagePath);
        }
      },
    );
  }

  static QueryExecutor _openConnection() {
    return driftDatabase(
      name: 'kooltab',
      native: const DriftNativeOptions(
        databaseDirectory: getApplicationSupportDirectory,
      ),
    );
  }
}