import '../core/network/api_client.dart';
import '../core/network/api_exception.dart';
import '../core/network/endpoints.dart';
import '../models/user_model.dart';

/// 认证服务（《03-接口文档》第 3 章）
class AuthService {
  AuthService._();

  /// 3.1 发送短信验证码 scene: register/login/reset
  static Future<void> sendSmsCode(String phone, String scene) async {
    await ApiClient.I.post(Endpoints.smsSend, data: {'phone': phone, 'scene': scene});
  }

  /// 3.2 发送邮箱验证码
  static Future<void> sendEmailCode(String email, String scene) async {
    await ApiClient.I.post(Endpoints.emailSend, data: {'email': email, 'scene': scene});
  }

  /// 3.3 注册（type: phone/email，可带邀请码），返回 Token 对与用户信息
  static Future<LoginResult> register({
    required String type,
    required String account,
    required String code,
    required String password,
    String? nickname,
    String? inviteCode,
  }) async {
    final data = await ApiClient.post<Map<String, dynamic>>(Endpoints.register, data: {
      'type': type,
      if (type == 'phone') 'phone': account else 'email': account,
      'code': code,
      'password': password,
      if (nickname != null && nickname.isNotEmpty) 'nickname': nickname,
      if (inviteCode != null && inviteCode.isNotEmpty) 'invite_code': inviteCode,
    });
    return _fromTokenData(data);
  }

  /// 3.4 登录（type: phone_password/phone_code/email_password）
  static Future<LoginResult> login({
    required String type,
    String? phone,
    String? email,
    String? password,
    String? code,
  }) async {
    final data = await ApiClient.post<Map<String, dynamic>>(Endpoints.login, data: {
      'type': type,
      if (phone != null) 'phone': phone,
      if (email != null) 'email': email,
      if (password != null) 'password': password,
      if (code != null) 'code': code,
    });
    return _fromTokenData(data);
  }

  /// 3.6 退出登录
  static Future<void> logout() async {
    try {
      await ApiClient.I.post(Endpoints.logout);
    } on ApiException catch (e) {
      // Token 已失效等情况忽略，本地照常清理
      if (!e.isUnauthorized) rethrow;
    }
  }

  /// 统一解析 Token 响应：access/refresh 入安全存储，user 转模型
  static LoginResult _fromTokenData(Map<String, dynamic> data) {
    final user = UserModel.fromJson((data['user'] as Map<String, dynamic>?) ?? const {});
    final trial = data['trial_granted'] as Map<String, dynamic>?;
    return LoginResult(
      user: user,
      trialPlanName: trial?['plan_name'] as String?,
    );
  }
}

/// 登录/注册结果
class LoginResult {
  LoginResult({required this.user, this.trialPlanName});

  final UserModel user;

  /// 注册赠送的体验会员名称（关闭赠送开关时为 null）
  final String? trialPlanName;
}