mnemo_cards/mnemo_cards_backend/lib/database/tables/promo_codes.dart

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

/// Таблица PromoCodesCampaigns - кампании промокодов
class PromoCodesCampaigns extends Table {
  TextColumn get id => text().withDefault(const Constant('gen_random_uuid()'))();
  
  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()();
  
  DateTimeColumn get start => dateTime()();
  DateTimeColumn get finish => dateTime()();
  
  // 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
  DateTimeColumn get createdAt => dateTime().withDefault(currentTimestamp)();
  DateTimeColumn get updatedAt => dateTime().withDefault(currentTimestamp)();
  BoolColumn get isDeleted => boolean()
      .withDefault(const Constant(false))
      .customConstraint('')(); // PostgreSQL использует нативный BOOLEAN, не нужен CHECK
  
  @override
  Set<Column> get primaryKey => {id};
}

/// Таблица PromoCodes - промокоды
class PromoCodes extends Table {
  TextColumn get id => text().withDefault(const Constant('gen_random_uuid()'))();
  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
  DateTimeColumn get createdAt => dateTime().withDefault(currentTimestamp)();
  DateTimeColumn get updatedAt => dateTime().withDefault(currentTimestamp)();
  
  @override
  Set<Column> get primaryKey => {id};
}

// Конвертеры импортированы из converters.dart