import 'package:drift/drift.dart';
import 'package:drift_postgres/drift_postgres.dart';
import '../converters.dart'
    show generateUuid, JsonListConverter, StringListConverter;
import 'users.dart';

/// Таблица PromoCodesCampaigns - кампании промокодов
class PromoCodesCampaigns extends Table {
  // ID как String, но фактически UUID (генерируется PostgreSQL на стороне БД)
  TextColumn get id =>
      text().withDefault(const CustomExpression('gen_random_uuid()::text'))();

  TextColumn get template => text()();
  TextColumn get name => text().nullable()();

  // Продукты (JSON array)
  TextColumn get products =>
      text().withDefault(const Constant('[]')).map(const JsonListConverter())();

  IntColumn get activationsPerCode => integer()();
  IntColumn get activationsPerUser => integer()();
  IntColumn get generationSize => integer()();

  Column<PgDateTime> get start => customType(PgTypes.timestampWithTimezone)();
  Column<PgDateTime> get finish => customType(PgTypes.timestampWithTimezone)();

  // Статус (enum as string)
  TextColumn get status =>
      text()(); // created, preparing, ready, active, disabled

  // Теги (JSON array)
  TextColumn get tags => text()
      .withDefault(const Constant('[]'))
      .map(const StringListConverter())();

  // Audit
  Column<PgDateTime> get createdAt =>
      customType(PgTypes.timestampWithTimezone).withDefault(now())();
  Column<PgDateTime> get updatedAt =>
      customType(PgTypes.timestampWithTimezone).withDefault(now())();
  BoolColumn get isDeleted =>
      boolean().customConstraint('NOT NULL DEFAULT FALSE')();
  // PostgreSQL использует нативный BOOLEAN
  Column<PgDateTime> get deletedAt =>
      customType(PgTypes.timestampWithTimezone).nullable()();

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

/// Таблица PromoCodes - промокоды
class PromoCodes extends Table {
  // ID как String, но фактически UUID (генерируется PostgreSQL на стороне БД)
  TextColumn get id =>
      text().withDefault(const CustomExpression('gen_random_uuid()::text'))();
  TextColumn get campaignId => text().references(
    PromoCodesCampaigns,
    #id,
    onDelete: KeyAction.cascade,
  )();

  TextColumn get code => text().unique()();
  IntColumn get activations => integer().withDefault(const Constant(0))();

  // Индивидуальный промокод (связан с пользователем)
  TextColumn get userId =>
      text().nullable().references(Users, #id, onDelete: KeyAction.cascade)();

  // Audit
  Column<PgDateTime> get createdAt =>
      customType(PgTypes.timestampWithTimezone).withDefault(now())();
  Column<PgDateTime> get updatedAt =>
      customType(PgTypes.timestampWithTimezone).withDefault(now())();
  BoolColumn get isDeleted =>
      boolean().customConstraint('NOT NULL DEFAULT FALSE')();

  Column<PgDateTime> get deletedAt =>
      customType(PgTypes.timestampWithTimezone).nullable()();

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

// Конвертеры импортированы из converters.dart