import 'package:drift/drift.dart';
import '../converters.dart';
import '../postgres_constants.dart';

/// Таблица Users - основная информация о пользователях
class Users extends Table {
  TextColumn get id => text().withDefault(const Constant('gen_random_uuid()'))();
  TextColumn get externalUserId => text().unique()();
  TextColumn get name => text().nullable()();
  TextColumn get email => text().nullable()();
  BoolColumn get admin => boolean().withDefault(const Constant(false))();
  
  // UserSettings (JSON)
  TextColumn get userSettings => text().nullable()();
  
  // Purchases (JSON array)
  TextColumn get purchases => text()
      .withDefault(const Constant('[]'))
      .map(const StringListConverter())();
  
  // Audit fields
  DateTimeColumn get createdAt => dateTime().withDefault(currentTimestamp)();
  DateTimeColumn get updatedAt => dateTime().withDefault(currentTimestamp)();
  BoolColumn get isDeleted => boolean().withDefault(const Constant(false))();
  
  @override
  Set<Column> get primaryKey => {id};
  
  @override
  List<String> get customConstraints => [
    'CONSTRAINT valid_email CHECK (email IS NULL OR email LIKE \'%@%\')',
  ];
}

/// Таблица UserDatas - расширенная информация о пользователе
class UserDatas extends Table {
  TextColumn get id => text().withDefault(const Constant('gen_random_uuid()'))();
  TextColumn get userId => text().unique().references(Users, #id, onDelete: KeyAction.cascade)();
  
  // Статистика
  IntColumn get totalStudyTimeMinutes => integer().withDefault(const Constant(0))();
  IntColumn get currentStreak => integer().withDefault(const Constant(0))();
  IntColumn get longestStreak => integer().withDefault(const Constant(0))();
  IntColumn get totalCards => integer().withDefault(const Constant(0))();
  IntColumn get totalTests => integer().withDefault(const Constant(0))();
  
  // Временные метки
  DateTimeColumn get lastTimeOnline => dateTime().nullable()();
  DateTimeColumn get registrationDate => dateTime().withDefault(currentTimestamp)();
  TextColumn get lastTestSessionToken => text().nullable()();
  
  // Сложные структуры (JSON)
  TextColumn get words => text()
      .withDefault(const Constant('[]'))
      .map(const JsonListConverter())();
  
  TextColumn get tags => text()
      .withDefault(const Constant('[]'))
      .map(const StringListConverter())();
  
  TextColumn get packProgress => text()
      .withDefault(const Constant('[]'))
      .map(const JsonListConverter())();
  
  TextColumn get studyDates => text()
      .withDefault(const Constant('[]'))
      .map(const DateTimeListConverter())();
  
  TextColumn get achievements => text()
      .withDefault(const Constant('[]'))
      .map(const JsonListConverter())();
  
  TextColumn get categoryMinutes => text()
      .withDefault(const Constant('{}'))
      .map(const JsonMapConverter())();
  
  // Audit
  DateTimeColumn get createdAt => dateTime().withDefault(currentTimestamp)();
  DateTimeColumn get updatedAt => dateTime().withDefault(currentTimestamp)();
  
  @override
  Set<Column> get primaryKey => {id};
}

// Конвертеры импортированы из converters.dart