import { create } from 'zustand';
import { RealTimeAPI } from '@/channel/realTimeAPI';
import { olog, isEmpty } from '@/utils/commons';
import { receivedMsgTypeMapped, handleNotification } from '@/channel/whatsappUtils';
import { fetchConversationsList, fetchTemplates, fetchMessages } from '@/actions/ConversationActions';
import { devtools } from 'zustand/middleware';
import { WS_URL } from '@/config';

// const WS_URL = 'ws://202.103.68.144:8888/whatever/';
// const WS_URL = 'ws://120.79.9.217:10022/whatever/';
const conversationRow = {
  sn: '',
  opi_sn: '',
  coli_sn: '',
  coli_id: '',
  last_received_time: '',
  last_send_time: '',
  unread_msg_count: '',
  whatsapp_name: '',
  customer_name: '',
  whatsapp_phone_number: '',
};

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

  errors: [], // 错误信息
  initialState: false,

  // 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: {},
  complexMsg: {},

  totalNotify: 0,
  msgListLoading: false,

};

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

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, activeConversations } = get();

    const realtimeAPI = new RealTimeAPI(
      {
        url: `${WS_URL}?opisn=${userId || ''}&_spam=${Date.now().toString()}`,
        protocol: 'WhatsApp',
      },
      () => {
        setWebsocketOpened(true);
        setWebsocketRetrytimes(0);
      },
      () => {
        setWebsocketOpened(false);
        const newMsgList = Object.keys(activeConversations).reduce((acc, key) => {
          const newMsgList = activeConversations[key].slice(-10);
          acc[key] = newMsgList;
          return acc;
        }, {});
        set({ activeConversations: newMsgList, currentConversation: {} });
      },
      (n) => setWebsocketRetrytimes(n)
    );

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

    olog('Connecting to websocket...');
    setWebsocket(realtimeAPI);
  },
  disconnectWebsocket: () => {
    const { websocket } = get();
    if (websocket) websocket.disconnect();
    return set({ websocket: null });
  },
  reconnectWebsocket: (userId) => {
    const { disconnectWebsocket, connectWebsocket } = get();
    disconnectWebsocket();
    setTimeout(() => {
      connectWebsocket(userId);
    }, 500);
  },
  handleMessage: (data) => {
    olog('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);
    }
    if (!isEmpty(msgRender)) {
      sentOrReceivedNewMessage(msgRender.conversationid, msgRender);
      handleNotification(msgRender.senderName, {
        body: msgRender?.text || `[ ${msgRender.type} ]`,
        ...(msgRender.type === 'photo' ? { image: msgRender.data.uri } : {}),
      });
    }
    console.log('handleMessage*******************');
  },
});

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

const complexMsgSlice = (set) => ({
  complexMsg: {},
  setComplexMsg: (complexMsg) => set({ complexMsg }),
});

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

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

    const newListIds = newList.map((chatItem) => `${chatItem.sn}`);
    const withoutNew = conversationsList.filter((item) => !newListIds.includes(`${item.sn}`));

    return set((state) => ({
      conversationsList: [...newList, ...withoutNew],
      activeConversations: { ...activeConversations, ...newConversationsMapped },
      totalNotify: state.totalNotify + newConversations.map((ele) => ele.unread_msg_count).reduce((acc, cur) => acc + (cur || 0), 0),
    }));
  },
  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({
      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((state) => ({
      totalNotify: state.totalNotify - (conversation.unread_msg_count || 0),
      currentConversation: conversation,
      referenceMsg: {},
      conversationsList: [...conversationsList],
    }));
  },
  updateCurrentConversation: (conversation) => set((state) => ({ currentConversation: { ...state.currentConversation, ...conversation } })),
  updateConversationItem: (conversation) => {
    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],
          ...conversation,
        })
      : null;
    return set({ conversationsList: [...conversationsList] });
  },
});

const messageSlice = (set, get) => ({
  totalNotify: 0,
  msgListLoading: false,
  activeConversations: {},
  refreshTotalNotify: () => set((state) => ({ totalNotify: state.conversationsList.reduce((r, c) => r+c.unread_msg_count, 0) })),
  setMsgLoading: (msgListLoading) => set({ msgListLoading }),
  receivedMessageList: (conversationid, msgList) =>
    set((state) => ({
      // msgListLoading: false,
      activeConversations: { ...state.activeConversations, [String(conversationid)]: msgList },
    })),
  updateMessageItem: (message) => {
    // msgUpdate
    // console.log('UPDATE_SENT_MESSAGE_ITEM-----------------------------------------------------------------', message);
    // 更新会话中的消息
    const { activeConversations, conversationsList, currentConversation } = 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) {
        // console.log('old msg ele', ele);
        const renderStatus = message?.data?.status ? { status: { ...ele.data.status, loading: 0, download: true } } : {};
        const keepReply = ele.reply ? { reply: ele.reply } : {};
        const keepTemplate = ele.template ? { template: ele.template, template_origin: ele.template_origin, text: ele.text } : {};
        return { ...ele, ...message, id: message.id, status: ele.status === 'read' ? ele.status : message.status, dateString: message.dateString, data: { ...ele.data, ...renderStatus  }, ...keepReply, ...keepTemplate };
      }
      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);
    }

    const targetIndex = conversationsList.findIndex((ele) => String(ele.sn) === String(targetId));
    let newConversations = [];
    if (targetIndex !== -1) { // 'delivered'
      // 更新列表的时间
      conversationsList.splice(targetIndex, 1, {
        ...conversationsList[targetIndex],
        last_received_time: message.status === 'received' ? message.deliverTime : conversationsList[targetIndex].last_received_time, // todo: 需要+8 hours
        conversation_expiretime: message?.conversation?.expireTime || conversationsList[targetIndex].conversation_expiretime || '', // 保留使用UTC时间
      });
    } else if (targetIndex === -1) {
      // 当前客户端不存在的会话
      // todo: 设置为当前(在WhatsApp返回号码不一致时)
      newConversations = [{
        ...conversationRow,
        ...message,
        sn: targetId,
        opi_sn: currentConversation.opi_sn, // todo: coli sn
        last_received_time: message.date,
        unread_msg_count: 0,
        whatsapp_name: message.to, //message?.senderName || message?.sender || '',
        customer_name: message.to, // message?.senderName || message?.sender || '',
        whatsapp_phone_number: message.to,
        conversation_expiretime: message?.conversation?.expireTime || '', // 保留使用UTC时间
      }];
    }

    return set({
      activeConversations: { ...activeConversations, [String(targetId)]: targetMsgs },
      conversationsList: [...newConversations, ...conversationsList],
    });
  },
  sentOrReceivedNewMessage: (targetId, message) => {
    // msgRender:
    const { activeConversations, conversationsList, currentConversation, totalNotify } = get();
    const targetMsgs = activeConversations[String(targetId)] || [];
    const targetIndex = conversationsList.findIndex((ele) => String(ele.sn) === String(targetId));
    const lastReceivedTime = message.type !== 'system' && message.sender !== 'me' ? message.date : null;
    const newConversation =
      targetIndex !== -1
        ? {
            ...conversationsList[targetIndex],
            last_received_time: lastReceivedTime || 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,
          }
        : {
            ...conversationRow,
            ...message,
            sn: targetId,
            opi_sn: currentConversation.opi_sn, // todo: coli sn
            last_received_time: message.date,
            unread_msg_count: message.sender === 'me' ? 0 : 1,
            whatsapp_name: message?.senderName || message?.sender || '',
            customer_name: message?.senderName || message?.sender || '',
            whatsapp_phone_number: message.from,
          };
    conversationsList.splice(targetIndex, 1);
    conversationsList.unshift(newConversation);
    return set({
      totalNotify: totalNotify + (message.sender === 'me' ? 0 : 1),
      activeConversations: { ...activeConversations, [String(targetId)]: [...targetMsgs, message] },
      conversationsList: [...conversationsList],
      currentConversation: {
        ...currentConversation,
        ...(String(targetId) === String(currentConversation.sn) ? { last_received_time: message.date } : {}),
      },
    });
  },
});

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

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

    // side effects
    fetchInitialData: async (userIds) => {
      const { addToConversationList, setTemplates, setInitial, } = get();

      const conversationsList = await fetchConversationsList({ opisn: userIds });
      addToConversationList(conversationsList);

      const templates = await fetchTemplates();
      setTemplates(templates);

      setInitial(true);

    },

    reset: () => set(initialConversationState),
  }))
);

export default useConversationStore;