import 'dart:io';
import 'package:flutter/foundation.dart';
import 'package:android_id/android_id.dart';
import 'package:device_info_plus/device_info_plus.dart';
import 'package:flutter_secure_storage/flutter_secure_storage.dart';
import 'package:package_info_plus/package_info_plus.dart';
import 'package:skywood/global/request/api_const.dart';

@immutable
class SkyDeviceInfo {
  final String deviceId;
  final String systemType;
  final String systemVersion;
  final String brand;
  final String model;

  final String appName;
  final String appPackageName;
  final String appVersion;
  final String idfv;

  static SkyDeviceInfo? _instance;

  const SkyDeviceInfo._({
    required this.deviceId,
    required this.systemType,
    required this.systemVersion,
    required this.brand,
    required this.model,
    required this.appName,
    required this.appPackageName,
    required this.appVersion,
    required this.idfv,
  });

  static SkyDeviceInfo get instance {
    if (_instance == null) {
      throw StateError('error');
    }
    return _instance!;
  }

  @visibleForTesting
  static void setMockInstance({
    String deviceId = 'test-device-id',
    String systemType = 'test',
    String systemVersion = '1.0',
    String brand = 'test',
    String model = 'test',
    String appName = 'Glimzo',
    String appPackageName = 'com.example.skywood',
    String appVersion = '1.0.0',
    String idfv = 'test-idfv',
  }) {
    _instance = SkyDeviceInfo._(
      deviceId: deviceId,
      systemType: systemType,
      systemVersion: systemVersion,
      brand: brand,
      model: model,
      appName: appName,
      appPackageName: appPackageName,
      appVersion: appVersion,
      idfv: idfv,
    );
  }

  /// 初始化设备信息
  static Future<void> init() async {
    if (_instance != null) return;

    String deviceId = '',
        systemType = '',
        systemVersion = '',
        brand = '',
        model = '',
        appName = 'Glimzo',
        appPackageName = '',
        appVersion = '',
        idfv = '';

    // 获取应用信息
    await _initAppInfo()
        .then((info) {
          appPackageName = info['packageName'] ?? '';
          appVersion = info['version'] ?? '';
          appName = ApiConst.appName;
        })
        .catchError((e) {
          debugPrint('[sDeviceInfo] getElPackageName: $e');
        });

    // 获取设备信息
    if (Platform.isAndroid) {
      await _initAndroidInfo()
          .then((info) {
            deviceId = info['deviceId'] ?? '';
            systemType = 'android';
            systemVersion = info['systemVersion'] ?? '';
            brand = info['brand'] ?? '';
            model = info['model'] ?? '';
          })
          .catchError((e) {
            debugPrint('[GlimzoUtilDeviceInfo] Android: $e');
          });
    } else if (Platform.isIOS) {
      await _initIOSInfo()
          .then((info) {
            deviceId = info['deviceId'] ?? '';
            idfv = info['idfv'] ?? '';
            systemType = 'ios';
            systemVersion = info['systemVersion'] ?? '';
            brand = info['brand'] ?? '';
            model = info['model'] ?? '';
          })
          .catchError((e) {
            debugPrint('[GlimzoUtilDeviceInfo] iOS: $e');
          });
    }

    _instance = SkyDeviceInfo._(
      deviceId: deviceId,
      systemType: systemType,
      systemVersion: systemVersion,
      brand: brand,
      model: model,
      appName: appName,
      appPackageName: appPackageName,
      appVersion: appVersion,
      idfv: idfv,
    );
  }

  /// 获取应用信息
  static Future<Map<String, String>> _initAppInfo() async {
    final packageInfo = await PackageInfo.fromPlatform();
    return {
      'packageName': packageInfo.packageName,
      'version': packageInfo.version,
    };
  }

  /// 获取 Android 设备信息
  static Future<Map<String, String?>> _initAndroidInfo() async {
    final plugin = DeviceInfoPlugin();
    final androidInfo = await plugin.androidInfo;
    final androidIdPlugin = AndroidId();
    final androidId = await androidIdPlugin.getId();
    return {
      'deviceId': androidId ?? androidInfo.id,
      'systemVersion': androidInfo.version.release,
      'brand': androidInfo.brand,
      'model': androidInfo.model,
    };
  }

  /// 获取 iOS 设备信息
  static Future<Map<String, String?>> _initIOSInfo() async {
    final plugin = DeviceInfoPlugin();
    final iosInfo = await plugin.iosInfo;
    final secureStorage = FlutterSecureStorage();
    String? idfvStore = await secureStorage.read(key: 'identifierForVendor');
    idfvStore ??= iosInfo.identifierForVendor;

    if (idfvStore != null) {
      await secureStorage.write(key: 'identifierForVendor', value: idfvStore);
    }

    return {
      'deviceId': idfvStore,
      'idfv': iosInfo.identifierForVendor ?? '',
      'systemVersion': iosInfo.systemVersion,
      'brand': iosInfo.model,
      'model': iosInfo.modelName,
    };
  }
}