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

import 'package:drift/drift.dart';

import '../converters.dart' show JsonMapConverter, JsonListConverter;
import '../postgres_constants.dart';
import 'users.dart';

/// Таблица SubscriptionPlans - планы подписки
class SubscriptionPlans extends Table {
  TextColumn get id => text().withDefault(const Constant('gen_random_uuid()'))();
  
  // UI информация (JSON)
  TextColumn get ui => text().nullable().map(const JsonMapConverter())();
  
  // Цена и валюта
  TextColumn get price => text()();
  TextColumn get currency => text()();
  IntColumn get durationDays => integer()();
  
  // Функции подписки (JSON array)
  TextColumn get features => text()
      .withDefault(const Constant('[]'))
      .map(const JsonListConverter())();
  
  // Платежная система
  TextColumn get paymentId => text().nullable()();
  TextColumn get paymentSystem => text()();  // enum as string
  
  // 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 UserSubscriptions - подписки пользователей
class UserSubscriptions extends Table {
  TextColumn get id => text().withDefault(const Constant('gen_random_uuid()'))();
  TextColumn get userId => text().unique().references(Users, #id, onDelete: KeyAction.cascade)();
  
  DateTimeColumn get start => dateTime()();
  DateTimeColumn get finish => dateTime()();
  
  // Функции подписки (JSON array)
  TextColumn get features => text()
      .withDefault(const Constant('[]'))
      .map(const JsonListConverter())();
  
  // Audit
  DateTimeColumn get createdAt => dateTime().withDefault(currentTimestamp)();
  DateTimeColumn get updatedAt => dateTime().withDefault(currentTimestamp)();
  
  @override
  Set<Column> get primaryKey => {id};
}

// Конвертеры импортированы из converters.dart