import 'dart:async';
import 'dart:io';

import 'package:flutter/foundation.dart';
import 'package:hive/hive.dart';

import '/database/box_type.dart';
import '/database/hive_database.dart';
import '/models/apply_list_model.dart';
import '/models/contact_model.dart';
import '/models/init_get_it.dart';
import '/models/route_state_model.dart';
import '/models/user_model.dart';
import '/models/websocket_model.dart';
import '/notification_api.dart';
import '/request/message.dart';

const int chunkSize = 1024 * 1024 * 2;

Future<void> receiveFriendMsg(
  Map<String, dynamic> msg,
  bool isShowNotification,
) async {
  print('=================收到了好友信息事件==================');
  print(msg);
  print('=======================================');
  String senderId = msg['senderId'] as String;
  Box<ChatSetting> chatSettingBox = Hive.box<ChatSetting>('chat_setting');
  Box<MessageT> messageTBox = await HiveDatabase.openMessageBox(senderId);
  Box<int> msgIndexBox = await Hive.openBox<int>('msg_index_$senderId');
  ChatSetting? chatSetting = chatSettingBox.get(senderId);
  DateTime dateTime = DateTime.parse(msg['dateTime'] as String);

  if (chatSetting == null) {
    chatSettingBox.put(
      senderId,
      ChatSetting(
        senderId,
        0,
        false,
        true,
        false,
        dateTime,
        1,
      ),
    );
  } else if (msgIndexBox.get(msg['msgId'] as String) != null) {
    return;
  } else {
    chatSetting.isOpen = true;
    chatSetting.latestDateTime = dateTime;
    chatSetting.unreadCount++;
    chatSettingBox.put(senderId, chatSetting);
  }

  List<String> attachments = List.from(msg['attachments']);
  final DateTime now = DateTime.parse(msg['dateTime'] as String);

  for (var attachment in attachments) {
    Box<AttachmentProgress> apr =
        Hive.box<AttachmentProgress>('attachment_receive');
    apr.put(attachment, AttachmentProgress(0, 1000, 0, true, false));
  }

  messageTBox.add(
    MessageT(
      msg['msgId'] as String,
      senderId,
      msg['text'],
      msg['type'],
      now,
      msg['isShowTime'],
      attachments,
    ),
  );

  if (!isShowNotification) {
    return;
  }

  String name = getIt.get<Contact>().friends[senderId]!.friendRemark.isEmpty
      ? getIt.get<ContactAccountProfile>().friends[senderId]!.nickname
      : getIt.get<Contact>().friends[senderId]!.friendRemark;

  String routeName = getIt.get<RouteState>().currentPathName;

  String avatar = getIt.get<ContactAccountProfile>().friends[senderId]!.avatar;

  if (!getIt.get<RouteState>().isVisible) {
    NotificationAPI.showMessageNotifications(
      senderId: senderId,
      name: name,
      avatar: avatar,
      text: msg['text'] as String,
    );
  } else if (routeName == 'Message') {
    if (!getIt.get<RouteState>().query.containsValue(senderId)) {
      NotificationAPI.showMessageNotifications(
        senderId: senderId,
        name: name,
        avatar: avatar,
        text: msg['text'] as String,
      );
    }
  } else if (routeName != 'Chat') {
    NotificationAPI.showMessageNotifications(
      senderId: senderId,
      name: name,
      avatar: avatar,
      text: msg['text'] as String,
    );
  }
}

void receiveApplyFriend(Map<String, dynamic> msg) {
  print('=================收到了申请好友事件==================');
  print(msg);
  print('=======================================');
  getIt.get<ApplyList>().addJson(msg);
}

void receiveFriendAdded(Map<String, dynamic> msg) {
  print('=================收到了申请好友通过事件==================');
  print(msg);
  print('=======================================');
  getIt.get<Contact>().addFriend(msg['friendId'], msg['setting']);
  getIt
      .get<ContactAccountProfile>()
      .addFriendAccountProfile(msg['friendId'], msg['accountProfile']);
}

void receiveFriendDeleted(Map<String, dynamic> msg) {
  print('=================收到了解除好友事件==================');
  print(msg);
  print('=======================================');
  getIt.get<Contact>().removeFriend(msg['friendId']);
  getIt.get<ContactAccountProfile>().removeFriend(msg['friendId']);
}

void receiveGroupChatCreation(Map<String, dynamic> msg) {
  print('=================收到了群聊邀请事件==================');
  print(msg);
  print('=======================================');
  String groupChatId = msg['groupChat']['id'];
  getIt.get<Contact>().addGroupChat(groupChatId);
  getIt.get<ContactAccountProfile>().addGroupChatProfile(groupChatId, msg);
}

void receiveGroupChatMsg(
  Map<String, dynamic> msg,
  bool isShowNotification,
) async {
  print('=================收到了群聊信息事件==================');
  print(msg);
  print('=======================================');
  String senderId = msg['senderId'] as String;
  String groupChatId = msg['groupChatId'] as String;
  Box<ChatSetting> chatSettingBox = Hive.box<ChatSetting>('chat_setting');
  Box<MessageT> messageTBox = await HiveDatabase.openMessageBox(groupChatId);
  Box<int> msgIndexBox = await Hive.openBox('msg_index_$groupChatId');
  ChatSetting? chatSetting = chatSettingBox.get(groupChatId);
  DateTime dateTime = DateTime.parse(msg['dateTime'] as String);

  getIt.get<ContactAccountProfile>().addGroupChatMemberProfile(
    groupChatId,
    msg['senderId'],
    {
      'avatar': msg['avatar'],
      'nickname': msg['nickname'],
      'remarkInGroupChat': msg['remarkInGroupChat'],
    },
  );

  if (chatSetting == null) {
    chatSettingBox.put(
      groupChatId,
      ChatSetting(
        groupChatId,
        1,
        false,
        true,
        false,
        dateTime,
        1,
      ),
    );
  } else if (msgIndexBox.get(msg['msgId'] as String) != null) {
    return;
  } else {
    chatSetting.isOpen = true;
    chatSetting.latestDateTime = dateTime;
    chatSetting.unreadCount++;
    chatSettingBox.put(groupChatId, chatSetting);
  }

  List<String> attachments = List.from(msg['attachments']);
  final DateTime now = DateTime.parse(msg['dateTime'] as String);

  for (var attachment in attachments) {
    Box<AttachmentProgress> apr =
        Hive.box<AttachmentProgress>('attachment_receive');
    apr.put(attachment, AttachmentProgress(0, 1000, 0, true, false));
  }

  messageTBox.add(
    MessageT(
      msg['msgId'] as String,
      senderId,
      msg['text'],
      msg['type'],
      now,
      msg['isShowTime'],
      attachments,
    ),
  );

  if (!isShowNotification) {
    return;
  }

  String avatar =
      getIt.get<ContactAccountProfile>().groupChats[groupChatId]!.avatar;
  late String name;

  if (getIt.get<Contact>().friends.containsKey(senderId)) {
    if (getIt.get<Contact>().friends[senderId]!.friendRemark.isNotEmpty) {
      name = getIt.get<Contact>().friends[senderId]!.friendRemark;
    } else if ((msg['remarkInGroupChat'] as String).isNotEmpty) {
      name = msg['remarkInGroupChat'];
    } else {
      name = msg['nickname'];
    }
  } else {
    name = (msg['remarkInGroupChat'] as String).isNotEmpty
        ? msg['remarkInGroupChat']
        : msg['nickname'];
  }

  String routeName = getIt.get<RouteState>().currentPathName;

  if (!getIt.get<RouteState>().isVisible) {
    NotificationAPI.showMessageNotifications(
      senderId: senderId,
      name: name,
      avatar: avatar,
      text: msg['text'] as String,
      groupChatId: groupChatId,
    );
  } else if (routeName == 'Message') {
    if (!getIt.get<RouteState>().query.containsValue(groupChatId)) {
      NotificationAPI.showMessageNotifications(
        senderId: senderId,
        name: name,
        avatar: avatar,
        text: msg['text'] as String,
        groupChatId: groupChatId,
      );
    }
  } else if (routeName != 'Chat') {
    NotificationAPI.showMessageNotifications(
      senderId: senderId,
      name: name,
      avatar: avatar,
      text: msg['text'] as String,
      groupChatId: groupChatId,
    );
  }
}

void receiveChatImages(Map<String, dynamic> msg) async {
  print('=================收到了聊天图片事件==================');
  // // print(msg);
  print('=======================================');
  String chatImageDir = getIt.get<UserProfile>().baseImageDir;
  String filename = msg['filename'];
  String filePath = '$chatImageDir/$filename';
  File file = File(filePath);

  if (await file.exists()) {
    return;
  }

  late Box<AttachmentProgress> aprBox;
  try {
    aprBox = Hive.box<AttachmentProgress>('attachment_receive');
  } catch (_) {
    aprBox = await Hive.openBox<AttachmentProgress>('attachment_receive');
  }
  String dirTime = filename.split('/')[0];
  Directory dir = Directory('$chatImageDir/$dirTime');

  if (!(await dir.exists())) {
    await dir.create(recursive: true);
  }

  int totalChunkNum = msg['totalChunkNum'] as int;

  if (totalChunkNum == 1) {
    await file.writeAsBytes(List<int>.from(msg['bytes']));
    await Future.delayed(
      const Duration(milliseconds: 200),
      () {
        aprBox.put(
          filename,
          AttachmentProgress(1, 1, 1.0, true, false),
        );
      },
    );
    return;
  }

  File tempFile = File('$chatImageDir/${msg['tempFilename']}');
  AttachmentProgress? ap = aprBox.get(filename);

  if (!(await tempFile.exists())) {
    await tempFile.create(recursive: true);
    await tempFile.writeAsBytes(List<int>.from(msg['bytes']));
  }

  if (ap == null) {
    aprBox.put(
      filename,
      AttachmentProgress(
        1,
        totalChunkNum,
        1 / totalChunkNum,
        true,
        false,
      ),
    );
  } else {
    ap.hasChunkNum += 1;
    ap.progress = ap.hasChunkNum / totalChunkNum;
    ap.isValid = true;

    List<File> tempFiles = List.generate(
      totalChunkNum,
      (index) {
        String tempFilePath =
            '$chatImageDir/temp/$filename-$totalChunkNum-$index';
        return File(tempFilePath);
      },
    );

    // assemble chunks when all the chunks are arrived
    if (tempFiles.every((element) => element.existsSync())) {
      final openedFile = file.openWrite(mode: FileMode.append);

      for (var i = 0; i < totalChunkNum; i++) {
        Uint8List bytes = await tempFiles[i].readAsBytes();
        openedFile.add(bytes);
        await tempFiles[i].delete();
      }
      openedFile.close();
      ap.hasChunkNum = totalChunkNum;
      ap.progress = 1.0;
      ap.isValid = true;
    }

    aprBox.put(filename, ap);
  }
}

Future<void> receivePullChatImage(Map<String, dynamic> msg) async {
  print('=================收到了拉取图片请求==================');
  print(msg);
  print('=======================================');
  String baseImageDir = getIt.get<UserProfile>().baseImageDir;
  Map<String, dynamic> sentMsg = {
    'event': 'chat-image',
    'senderId': getIt.get<UserAccount>().id,
  };

  if (msg['chatType'] == 0) {
    sentMsg['receiverId'] = msg['receiverId'];
  } else {
    sentMsg['receiverIds'] = msg['receiverIds'];
  }

  for (var filename in msg['attachments']) {
    File file = File('$baseImageDir/$filename');
    int fileSize = await file.length();
    int totalChunkNum = (fileSize / chunkSize).ceil();
    int start = 0;
    int end = fileSize >= chunkSize ? start + chunkSize : start + fileSize;
    List<int> bytes = [];
    await file.openRead(start, end).forEach((element) => bytes.addAll(element));

    sentMsg['filename'] = filename;
    sentMsg['totalChunkNum'] = totalChunkNum;
    sentMsg['tempFilename'] = 'temp/$filename-$totalChunkNum-0';
    sentMsg['currentChunkNum'] = 0;
    sentMsg['bytes'] = bytes;

    await uploadChatAttachment(sentMsg);
    getIt.get<WebSocketManager>().addSendImageTimer(filename, totalChunkNum);
  }
}

Future<void> receiveCheckChatImage(Map<String, dynamic> msg) async {
  print('=================收到了服务端确认收到图片事件==================');
  // print(msg);
  print('=======================================');
  int nextChunkNum = msg['currentChunkNum'] + 1;
  int totalChunkNum = msg['totalChunkNum'];
  String baseImageDir = getIt.get<UserProfile>().baseImageDir;
  String filename = msg['filename'];
  Box<AttachmentProgress> asBox =
      Hive.box<AttachmentProgress>('attachment_send');
  AttachmentProgress aps = asBox.get(filename)!;

  getIt.get<WebSocketManager>().removeSendImageTimer(filename);
  aps.hasChunkNum += 1;
  aps.progress = aps.hasChunkNum / aps.totalChunkNum;
  asBox.put(filename, aps);
  // print(aps.hasChunkNum);
  // print(aps.totalChunkNum);
  // print('已发送了: ${aps.progress}');
  if (nextChunkNum == totalChunkNum) {
    return;
  }

  // Start to send next chunk
  int start = nextChunkNum * chunkSize;
  File file = File('$baseImageDir/$filename');
  List<int> bytes = [];

  if (nextChunkNum + 1 == totalChunkNum) {
    await file
        .openRead(start)
        .forEach((element) => bytes.addAll(element));
  } else {
    await file
        .openRead(start, start + chunkSize)
        .forEach((element) => bytes.addAll(element));
  }

  Map<String, dynamic> sentMsg = {
    'event': 'chat-image',
    'senderId': getIt.get<UserAccount>().id,
  };

  if (msg['chatType'] == 0) {
    sentMsg['receiverId'] = msg['receiverId'];
  } else {
    sentMsg['receiverIds'] = msg['receiverIds'];
  }

  sentMsg['filename'] = filename;
  sentMsg['totalChunkNum'] = totalChunkNum;
  sentMsg['tempFilename'] = 'temp/$filename-$totalChunkNum-$nextChunkNum';
  sentMsg['currentChunkNum'] = nextChunkNum;
  sentMsg['bytes'] = bytes;

  uploadChatAttachment(sentMsg);
  getIt.get<WebSocketManager>().addSendImageTimer(filename, totalChunkNum);
}