import { useEffect, useState } from "react";
import TextInputBar from "./TextInputBar";
import VoiceInputBar from "./VoiceInputBar";
import { textChat } from "@/service/bot";
import { useTextChat } from "@/store/textChat";
import { TAgentDetail } from "@/types/agent";
import { delay, getLoginId, isSuccess } from "@/utils";
import { EAI_MODEL } from "@/consts/enum";
import { useUnload } from "@tarojs/taro";
import { EChatRole, EContentType, TRobotMessage } from "@/types/bot";

import { usePostMessage } from './message'

import { getRecommendPrompt } from "@/service/bot"


interface Props {
  agent: TAgentDetail | null;
  setShowWelcome?: (b: boolean) => void;
  setIsVoice?: (b: boolean) => void;
  setDisabled?: (b: boolean) => void;
}

let stopReceiveChunk: (() => void) | undefined;
export const useChatInput = ({ agent, setShowWelcome, setDisabled, }: Props) => {
  const {
    pushRobotMessage,
    updateRobotMessage,
    getCurrentRobotMessage,
    updateRobotReasoningMessage,
    pushMessage,
    updateMessage,
    deleteMessage,
    setQuestions,
    questions,
  } = useTextChat();
  const { startTimedMessage, stopTimedMessage, saveMessageToServer } = usePostMessage(getCurrentRobotMessage);
  
  let myMsgUk = '';
  let mySessionId = '';


  const chatWithGpt = async (message: string, sessionId: string, msgUk: string) => {
    setShowWelcome?.(false)
    setQuestions([])
    let currentRobotMsgUk = "";
    await delay(300);
    setDisabled?.(true);
    if (!agent?.agentId) {
      return;
    }
    const loginId = getLoginId();
    if (!loginId) {
      return;
    }

    // const greeting = "欢迎光临我的智能体，你想问什么？";
    // {
    //   content: greeting,
    //   contentType: EContentType.TextPlain,
    //   role: EChatRole.System,
    // },
    
    const newMsg = {
      content: message,
      contentType: EContentType.TextPlain,
      role: EChatRole.User,
    }
    // 等发送的消息上报完成
    const myMsgResponse = await saveMessageToServer({
      loginId,
      messages: [{
        ...newMsg,
        saveStatus: 2,
        isStreaming: false,
        msgUk,
      }],
      agentId: agent.agentId,
      sessionId,
    })
    
    if(!isSuccess(myMsgResponse.status)){
      return setDisabled?.(false);
    }

    // 发起文本聊天
    stopReceiveChunk = textChat({
      params: {
        agentId: agent.agentId,
        isEnableOutputAudioStream: false,
        isEnableSearch: false,
        isEnableThinking: false,
        loginId,
        messages: [newMsg],
        sessionId,
      },
      onStart: () => {
        // 推一个空回复，用于展示 ui
        const blankMessage = {
          role: EChatRole.Assistant,
          contentType: EContentType.TextPlain,
          saveStatus: 0,
          content: "",
          reasoningContent: "",
          isStreaming: false,
          msgUk: currentRobotMsgUk,
          dislikeReason: '',
          robot: {
            avatar: agent?.avatarUrl ?? "",
            name: agent?.name ?? "",
            agentId: agent?.agentId ?? "",
          },
        }
        currentRobotMsgUk = pushRobotMessage(blankMessage);
        // 先暂停
        stopTimedMessage()
        // 开始定时发送，每5秒发送一次
        startTimedMessage({
          loginId,
          messages: [{
            ...blankMessage,
          }],
          agentId: agent.agentId ?? '',
          sessionId,
        }, 5000);
      },
      onReceived: (m) => {
        console.log("received:", m);
        if (m.reasoningContent) {
          updateRobotReasoningMessage(
            currentRobotMsgUk,
            m.reasoningContent,
            m.body,
          );
        } else {
          updateRobotMessage(m.content, m.body);
        }
      },
      onFinished: async () => {
        const currentRobotMessage = getCurrentRobotMessage();
        console.log("回复完毕 ok, 当前robotmessage: ", currentRobotMessage);
        
        stopTimedMessage()
        if(!agent.agentId){
          return
        }
        setDisabled?.(false);
        // 如果没有任何回答，则显示
        if (!currentRobotMessage?.content?.length) {
          updateRobotMessage("服务器繁忙...");
          return 
        }
        
        // 将智能体的回答保存至服务器
        // currentRobotMessage.content 保存的是当前完整的智能体回复信息文本
        const content = currentRobotMessage.content as string
        updateRobotMessage(content, currentRobotMessage?.body, 2, true)
        await saveMessageToServer({
          loginId,
          messages: [{
            saveStatus: 2,
            content: content,
            contentType: currentRobotMessage?.body?.contentType ?? EContentType.TextPlain,
            isStreaming: false,
            role: currentRobotMessage.role,
            msgUk: currentRobotMessage.msgUk,
          }],
          agentId: agent.agentId,
          sessionId,
        })
        
        const response = await getRecommendPrompt({
          agentId: agent.agentId,
          sessionId,
        })
        // todo: 如果用户快速输入需要将前面的问题答案丢弃，根据 currentRobotMessage.msgUk 来设置 questions
        if(isSuccess(response.status)){
          setQuestions(response.data.questions)
        }

      },
      onComplete: async ()=> {
        stopTimedMessage()
        console.log('回复 onComplete')
        // 为防止服务端没有终止消息，当接口请求结束时强制再保存一次消息体，以防定时保存的消息体漏掉最后一部分
        const currentRobotMessage = getCurrentRobotMessage();
        if(currentRobotMessage && agent.agentId){
          const content = currentRobotMessage.content as string
          await saveMessageToServer({
            loginId,
            messages: [{
              saveStatus: 2,
              content: content,
              contentType: currentRobotMessage?.body?.contentType ?? EContentType.TextPlain,
              isStreaming: false,
              role: currentRobotMessage.role,
              msgUk: currentRobotMessage.msgUk,
            }],
            agentId: agent.agentId,
            sessionId,
          })
        }
        
        setDisabled?.(false);
      },
      onError: () => {
        deleteMessage(currentRobotMsgUk);
      },
    });
  };
  const handleVoiceSend = (message: string) => {
    updateMessage(message, myMsgUk);
    chatWithGpt(message, mySessionId, myMsgUk);
  };
  const handleOnSend = async (message: string) => {
    if(!agent?.agentId){
      return
    }
    const {sessionId, msgUk} = pushMessage(message);
    chatWithGpt(message, sessionId, msgUk);
  };

  // 推一个自己的空气泡框
  const handleBeforeSend = () => {
    if(!agent?.agentId){
      return
    }
    const {sessionId, msgUk} = pushMessage("");
    myMsgUk = msgUk
    mySessionId = sessionId
  };

  // 发生主意识别错误时，删除当前自己发出的气泡框
  const handleVoiceError = () => {
    deleteMessage(myMsgUk);
  };
  useEffect(()=> {
    return ()=> {
      stopTimedMessage();
    }
  }, [])
  useUnload(() => {
    if (stopReceiveChunk) {
      stopReceiveChunk();
      stopTimedMessage();
    }
  });
  return {
    setQuestions,
    handleVoiceSend,
    handleOnSend,
    questions,
    handleBeforeSend,
    handleVoiceError,
  }
}