import { create } from 'zustand';
import { RealTimeAPI } from '@/lib/realTimeAPI';
import { olog, isEmpty } from '@/utils/utils';
import { receivedMsgTypeMapped } from '@/lib/msgUtils';
import { fetchConversationsList, fetchTemplates } from '@/actions/ConversationActions';
import { devtools } from 'zustand/middleware';

// const WS_URL = 'ws://202.103.68.144:8888/whatever/';
// const WS_URL = 'ws://120.79.9.217:10022/whatever/';
const WS_URL = 'wss://p9axztuwd7x8a7.mycht.cn/whatsapp_callback'; // prod:

const initialConversationState = {
  // websocket: null,
  // websocketOpened: null,
  // websocketRetrying: null,
  // websocketRetrytimes: null,

  errors: [], // 错误信息

  // templates: [],

  // conversationsList: [], // 对话列表
  // currentConversation: {}, // 当前对话

  // activeConversations: {}, // 激活的对话的消息列表: { [conversationId]: <messageItem>[] }

  // referenceMsg: {},
};
olog('initialConversationState');

export const templatesSlice = (set) => ({
  templates: [],
  setTemplates: (templates) => set({ templates }),
});

export const websocketSlice = (set, get) => ({
  websocket: null,
  websocketOpened: null,
  websocketRetrying: null,
  websocketRetrytimes: null,

  setWebsocket: (websocket) => set({ websocket }),
  setWebsocketOpened: (opened) => set({ websocketOpened: opened }),
  setWebsocketRetrying: (retrying) => set({ websocketRetrying: retrying }),
  setWebsocketRetrytimes: (retrytimes) => set({ websocketRetrytimes: retrytimes, websocketRetrying: retrytimes > 0 }),

  connectWebsocket: (userId) => {
    const { setWebsocket, setWebsocketOpened, setWebsocketRetrytimes, addError, handleMessage } = get();

    const realtimeAPI = new RealTimeAPI(
      {
        url: `${WS_URL}?opisn=${userId || ''}&_spam=${Date.now().toString()}`,
        protocol: 'WhatsApp',
      },
      () => {
        setWebsocketOpened(true);
        setWebsocketRetrytimes(0);
      },
      () => setWebsocketOpened(false),
      (n) => setWebsocketRetrytimes(n)
    );

    realtimeAPI.onError(() => addError('Error'));
    realtimeAPI.onMessage(handleMessage);
    realtimeAPI.onCompletion(() => addError('Connection broken'));

    olog('Connecting to websocket...', realtimeAPI)
    setWebsocket(realtimeAPI);
  },
  disconnectWebsocket: () => {
    const { websocket } = get();
    websocket.disconnect();
    return set({ websocket: null });
  },
  handleMessage: (data) => {
    console.log('handleMessage------------------');
    console.log(data);
    const { updateMessageItem, sentOrReceivedNewMessage } = get();
    const { errcode, errmsg, result } = data;

    if (!result) {
      return false;
    }
    let resultType = result?.action || result.type;
    if (errcode !== 0) {
      // addError('Error Connecting to Server');
      resultType = 'error';
    }
    console.log(resultType, 'result.type');
    const msgObj = receivedMsgTypeMapped[resultType].getMsg(result);
    const msgRender = receivedMsgTypeMapped[resultType].contentToRender(msgObj);
    const msgUpdate = receivedMsgTypeMapped[resultType].contentToUpdate(msgObj);
    console.log('msgRender msgUpdate', msgRender, msgUpdate);
    if (['whatsapp.message.updated', 'message', 'error'].includes(resultType)) {
      updateMessageItem(msgUpdate);
      // return false;
    }
    if (!isEmpty(msgRender)) {
      sentOrReceivedNewMessage(msgRender.conversationid, msgRender);
      window.Notification.requestPermission().then(function (permission) {
        if (permission === 'granted') {
          const notification = new Notification(`${msgRender.senderName}`, {
            body: msgRender?.text || `[ ${msgRender.type} ]`,
            ...(msgRender.type === 'photo' ? { image: msgRender.data.uri } : {}),
          });
          notification.onclick = function () {
            window.parent.parent.focus();
          };
        }
      });
    }
    console.log('handleMessage*******************');
  },
});

export const referenceMsgSlice = (set) => ({
  referenceMsg: [],
  setReferenceMsg: (referenceMsg) => set({ referenceMsg }),
});

export const conversationSlice = (set, get) => ({
  conversationsList: [],
  currentConversation: {},

  setConversationsList: (conversationsList) => {
    const conversationsMapped = conversationsList.reduce((r, v) => ({ ...r, [`${v.sn}`]: [] }), {});
    return set({ conversationsList, activeConversations: conversationsMapped });
  },
  addToConversationList: (newList) => {
    const { activeConversations } = get();
    const conversationsIds = Object.keys(activeConversations);
    const newConversations = newList.filter((conversation) => !conversationsIds.includes(`${conversation.sn}`));
    const newConversationsMapped = newConversations.reduce((r, v) => ({ ...r, [`${v.sn}`]: [] }), {});

    return set((state) => ({
      conversationsList: [...newConversations, ...state.conversationsList],
      activeConversations: { ...activeConversations, ...newConversationsMapped }
    }));
  },
  delConversationitem: (conversation) => {
    const { conversationsList, activeConversations } = get();
    const targetId = conversation.sn;
    const targetIndex = conversationsList.findIndex((ele) => String(ele.sn) === String(targetId));
    conversationsList.splice(targetIndex, 1);

    return set((state) => ({
      conversationsList: [...conversationsList],
      activeConversations: { ...activeConversations, [`${targetId}`]: [] },
      currentConversation: {},
    }));
  },
  setCurrentConversation: (conversation) => {
    // 清空未读
    const { conversationsList } = get();
    const targetId = conversation.sn;
    const targetIndex = conversationsList.findIndex((ele) => String(ele.sn) === String(targetId));
    targetIndex !== -1 ? conversationsList.splice(targetIndex, 1, {
      ...conversationsList[targetIndex],
      unread_msg_count: 0,
    }) : null;

    return set({ currentConversation: conversation, referenceMsg: {}, conversationsList: [...conversationsList] });
  },
});

export const messageSlice = (set, get) => ({
  activeConversations: {},
  receivedMessageList: (conversationid, msgList) => set((state) => ({
    activeConversations: { ...state.activeConversations, [String(conversationid)]: msgList }
  })),
  updateMessageItem: (message) => { // msgUpdate
    console.log('UPDATE_SENT_MESSAGE_ITEM-----------------------------------------------------------------');
    // 更新会话中的消息
    const { activeConversations, conversationsList } = get();
    const targetId = message.conversationid;
    const targetMsgs = (activeConversations[String(targetId)] || []).map((ele) => {
      // 更新状态
      // * 已读的不再更新状态, 有时候投递结果在已读之后返回
      if (ele.id === ele.actionId && ele.actionId === message.actionId) {
        return { ...ele, id: message.id, status: ele.status === 'read' ? ele.status : message.status, dateString: message.dateString };
      } else if (ele.id === message.id) {
        return { ...ele, id: message.id, status: ele.status === 'read' ? ele.status : message.status, dateString: message.dateString };
      }
      return ele;
    });
    // 显示会话中其他客户端发送的消息
    const targetMsgsIds = targetMsgs.map((ele) => ele.id);
    if (!targetMsgsIds.includes(message.id)) {
      targetMsgs.push(message);
    }

    // 更新列表的时间
    // if (message.type !== 'error') {
    //   const targetIndex = conversationsList.findIndex((ele) => String(ele.sn) === String(targetId));
    //   conversationsList.splice(targetIndex, 1, {
    //     ...conversationsList[targetIndex],
    //     last_received_time: message.date,
    //   });
    // }

    return set((state) => ({
      activeConversations: { ...activeConversations, [String(targetId)]: targetMsgs },
      conversationsList: [...conversationsList],
    }));
  },
  sentOrReceivedNewMessage: (targetId, message) => { // msgRender:
    const { activeConversations, conversationsList, currentConversation } = get();
    const targetMsgs = activeConversations[String(targetId)] || [];
    const targetIndex = conversationsList.findIndex((ele) => String(ele.sn) === String(targetId));
    const newConversation =
      targetId !== -1
        ? {
            ...conversationsList[targetIndex],
            last_received_time: message.type !== 'system' && message.sender !== 'me' ? message.date : conversationsList[targetIndex].last_received_time,
            unread_msg_count:
              String(targetId) !== String(currentConversation.sn) && message.sender !== 'me'
                ? conversationsList[targetIndex].unread_msg_count + 1
                : conversationsList[targetIndex].unread_msg_count,
          }
        : {
            ...message,
            sn: targetId,
            last_received_time: message.date,
            unread_msg_count: message.sender === 'me' ? 0 : 1,
          };
    conversationsList.splice(targetIndex, 1);
    conversationsList.unshift(newConversation);
    return set((state) => ({
      activeConversations: { ...activeConversations, [String(targetId)]: [...targetMsgs, message] },
      conversationsList: [...conversationsList],
      currentConversation: {
        ...currentConversation,
        last_received_time: String(targetId) === String(currentConversation.sn) ? message.date : currentConversation.last_received_time,
      },
    }));

  },
});

export const useConversationStore = create(devtools((set, get) => ({
  ...initialConversationState,
  ...websocketSlice(set, get),
  ...conversationSlice(set, get),
  ...templatesSlice(set, get),
  ...messageSlice(set, get),
  ...referenceMsgSlice(set, get),

  // state actions
  addError: (error) => set((state) => ({ errors: [...state.errors, error] })),

  // side effects
  fetchInitialData: async (userId) => {
    olog('fetch init');
    const { setConversationsList, setTemplates } = get();

    const conversationsList = await fetchConversationsList({ opisn: userId });
    setConversationsList(conversationsList);

    const templates = await fetchTemplates();
    setTemplates(templates);
  },
})));
// window.store = useConversationStore; // debug:
export default useConversationStore;