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

/// Таблица Tokens - токены авторизации пользователей
class Tokens 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 userId => text()
      .references(Users, #id, onDelete: KeyAction.cascade)();
  
  TextColumn get token => text().unique()();
  TextColumn get externalUserId => text()();
  
  Column<PgDateTime> get created => customType(PgTypes.timestampWithTimezone)
      .withDefault(now())();
  Column<PgDateTime> get expires => customType(PgTypes.timestampWithTimezone)();
  BoolColumn get isDeleted => boolean()
      .customConstraint('NOT NULL DEFAULT FALSE')();
  Column<PgDateTime> get deletedAt => customType(PgTypes.timestampWithTimezone)
      .nullable()();
  
  @override
  Set<Column> get primaryKey => {id};
  
  @override
  List<String> get customConstraints => [
    'CONSTRAINT valid_expiry CHECK (expires > created)',
  ];
}

/// Таблица RefreshTokens - refresh токены для JWT
class RefreshTokens 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 userId => text()
      .references(Users, #id, onDelete: KeyAction.cascade)();
  
  TextColumn get jti => text().unique()();  // JWT ID
  
  BoolColumn get isBlacklisted => boolean()
      .customConstraint('NOT NULL DEFAULT FALSE')(); // PostgreSQL использует нативный BOOLEAN
  
  Column<PgDateTime> get createdAt => customType(PgTypes.timestampWithTimezone)
      .withDefault(now())();
  Column<PgDateTime> get expiresAt => customType(PgTypes.timestampWithTimezone)();
  BoolColumn get isDeleted => boolean()
      .customConstraint('NOT NULL DEFAULT FALSE')();
  Column<PgDateTime> get deletedAt => customType(PgTypes.timestampWithTimezone)
      .nullable()();
  
  @override
  Set<Column> get primaryKey => {id};
}

/// Таблица TelegramAuthCodes - коды для авторизации через Telegram
class TelegramAuthCodes 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 code => text().unique()();
  TextColumn get telegramUserId => text()();
  TextColumn get telegramUsername => text().nullable()();
  TextColumn get firstName => text().nullable()();
  TextColumn get lastName => text().nullable()();
  
  BoolColumn get isUsed => boolean()
      .withDefault(const Constant(false))
      .customConstraint('')(); // PostgreSQL использует нативный BOOLEAN
  Column<PgDateTime> get usedAt => customType(PgTypes.timestampWithTimezone)
      .nullable()();
  
  Column<PgDateTime> get createdAt => customType(PgTypes.timestampWithTimezone)
      .withDefault(now())();
  Column<PgDateTime> get expiresAt => customType(PgTypes.timestampWithTimezone)();
  BoolColumn get isDeleted => boolean()
      .customConstraint('NOT NULL DEFAULT FALSE')();
  Column<PgDateTime> get deletedAt => customType(PgTypes.timestampWithTimezone)
      .nullable()();
  
  @override
  Set<Column> get primaryKey => {id};
}