import 'dart:convert';
import 'dart:math';

import 'package:PiliPlus/http/loading_state.dart';
import 'package:PiliPlus/models/common/dynamics_type.dart';
import 'package:PiliPlus/models/user/info.dart';
import 'package:PiliPlus/models/user/stat.dart';
import 'package:PiliPlus/pages/dynamics/tab/controller.dart';
import 'package:PiliPlus/utils/storage.dart';
import 'package:crypto/crypto.dart';
import 'package:get/get.dart';
import 'package:PiliPlus/pages/dynamics/index.dart';
import 'package:PiliPlus/pages/home/index.dart';
import 'package:PiliPlus/pages/media/index.dart';
import 'package:PiliPlus/pages/mine/index.dart';
import 'package:uuid/uuid.dart';

class LoginUtils {
  static Future onLogout() async {
    await GStorage.userInfo.delete('userInfoCache');

    try {
      Get.find<MineController>()
        ..userInfo.value = UserInfoData()
        ..userStat.value = UserStat()
        ..isLogin.value = false;
      MineController.anonymity.value = false;
    } catch (_) {}

    try {
      Get.find<HomeController>()
        ..isLogin.value = false
        ..userFace.value = '';
    } catch (_) {}

    try {
      Get.find<DynamicsController>()
        ..isLogin.value = false
        ..onRefresh();
    } catch (_) {}

    try {
      Get.find<MediaController>()
        ..mid = null
        ..loadingState.value = LoadingState.loading();
    } catch (_) {}

    try {
      for (int i = 0; i < tabsConfig.length; i++) {
        Get.find<DynamicsTabController>(tag: tabsConfig[i]['tag']).onRefresh();
      }
    } catch (_) {}
  }

  static String buvid() {
    var mac = <String>[];
    var random = Random();

    for (var i = 0; i < 6; i++) {
      var min = 0;
      var max = 0xff;
      var num = (random.nextInt(max - min + 1) + min).toRadixString(16);
      mac.add(num);
    }

    var md5Str = md5.convert(utf8.encode(mac.join(':'))).toString();
    var md5Arr = md5Str.split('');
    return 'XY${md5Arr[2]}${md5Arr[12]}${md5Arr[22]}$md5Str';
  }

  static String getUUID() {
    return const Uuid().v4().replaceAll('-', '');
  }

  static String generateBuvid() {
    String uuid = getUUID() + getUUID();
    return 'XY${uuid.substring(0, 35).toUpperCase()}';
  }

  static String genDeviceId() {
    // https://github.com/bilive/bilive_client/blob/2873de0532c54832f5464a4c57325ad9af8b8698/bilive/lib/app_client.ts#L62
    final String yyyyMMddHHmmss = DateTime.now()
        .toIso8601String()
        .replaceAll(RegExp(r'[-:TZ]'), '')
        .substring(0, 14);

    final Random random = Random(); // Random.secure();
    final String randomHex32 =
        List.generate(32, (index) => random.nextInt(16).toRadixString(16))
            .join();
    final String randomHex16 =
        List.generate(16, (index) => random.nextInt(16).toRadixString(16))
            .join();

    final String deviceID = randomHex32 + yyyyMMddHHmmss + randomHex16;

    final List<int> bytes = RegExp(r'\w{2}')
        .allMatches(deviceID)
        .map((match) => int.parse(match.group(0)!, radix: 16))
        .toList();
    final int checksumValue = bytes.reduce((a, b) => a + b);
    final String check = checksumValue
        .toRadixString(16)
        .substring(checksumValue.toRadixString(16).length - 2);

    return deviceID + check;
  }

  static String generateRandomString(int length) {
    const chars =
        '123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz';
    final Random random = Random(); // Random.secure();
    return List.generate(length, (index) => chars[random.nextInt(chars.length)])
        .join();
  }
}