// 消息数组
import { ref, reactive } from 'vue';
import avator from '@/public/icon/32.png';
import moment from 'moment'
export function useMsg(scrollbar: any, type: any, xlsxData: any, fetchDataAndProcess: Function) {
  const inputMessage = ref('');
  const indexTemp = ref(0);
  const taklToHtml = ref<any>(false);
  const sendLoading = ref(false);
  const pageInfo = ref<any>({});
  const formMap = ref([]);
  const messages = ref([{
    username: '用户1',
    content: '你好！有什么我可以帮助你的吗？',
    rawContent: '你好！有什么我可以帮助你的吗？',
    timestamp: moment().format('YYYY-MM-DD HH:mm:ss'),
    isSelf: false,
    avatar: avator
  }]);

  // 发送消息
  const addMessage = (msg: any, fetch: any) => {
    if (!msg) return
    const newMessage: any = {
      id: messages.value.length + 1,
      username: '我',
      content: msg,
      timestamp: moment().format('YYYY-MM-DD HH:mm:ss'),
      isSelf: true,
      avatar: 'https://cube.elemecdn.com/3/7c/3ea6beec64369c2642b92c6726f1epng.png',
      addToHistory: !taklToHtml.value
    }
    messages.value.push(newMessage)

    // 滚动到底部
    nextTick(() => {
      scrollbar.value?.setScrollTop(99999);
      fetch && sendRequese(msg, taklToHtml.value);
    })
  }

  const getPageInfo = () => {
    return new Promise((res, rej) => {
      chrome.runtime.sendMessage({
        type: 'FROM_SIDE_PANEL_TO_GET_PAGE_INFO',
      }, async (response) => {
        if (chrome.runtime.lastError) {
          console.error("消息发送错误:", chrome.runtime.lastError);
          rej(chrome.runtime.lastError)
        } else {
          pageInfo.value = response.data
          res(response.data)
        }
      });
    })
  }

  const sendRequese = async (msg: any, addHtml = false) => {
    const res: any = await getPageInfo()
    if (type.value === '2' && msg.startsWith('/')) {
      indexTemp.value = 0
      fetchRes(msg)
    }
    else {
      if (!addHtml) msg = getSummaryPrompt(res.content)
      streamRes(msg, addHtml)
    }
  }

  const fetchRes = async (msg: any) => {
    sendLoading.value = true
    const obj: any = reactive({
      id: moment(),
      username: '用户1',
      content: '',
      timestamp: moment().format('YYYY-MM-DD HH:mm:ss'),
      isSelf: false,
      avatar: avator,
      addToHistory: !taklToHtml.value
    })
    messages.value.push(obj)
    if (type.value === '2') {
      await fetchDataAndProcess(msg, obj)
      sendLoading.value = false
    }
  }


  const streamRes = async (msg: any, addHtml: any) => {
    sendLoading.value = true;
    const obj = reactive({
      username: '用户1',
      content: '',
      rawContent: '', // 存储原始内容
      timestamp: moment().format('YYYY-MM-DD HH:mm:ss'),
      isSelf: false,
      avatar: avator,
      addToHistory: !taklToHtml.value
    });
    let history = []
    if (taklToHtml.value) {
      if (addHtml) {
        history.push({
          role: 'user',
          content: `页面主要内容${pageInfo.value.content.mainContent}`
        })
      }
      history.push({
        role: 'user',
        content: msg
      })
    } else {
      history = messages.value
        .filter((item: any) => item.addToHistory).slice(-20)
        .map((item: any) => ({
          role: item.isSelf ? 'user' : 'system',
          content: item.isSelf ? item.content : item.rawContent
        }))
    }

    messages.value.push(obj)
    nextTick(() => {
      scrollbar.value?.setScrollTop(99999)
    })
    const iterator = await sendMessage(history, addHtml)

    for await (const chunk of iterator) {
      if (chunk) {
        const decodedChunk = chunk.choices[0].delta.content;
        if (decodedChunk) {
          // 保存原始内容
          obj.rawContent += decodedChunk
          // 实时格式化显示内容
          obj.content = formatMessage(obj.rawContent)
        }
      }
      scrollbar.value?.setScrollTop(99999)
    }
    scrollbar.value?.setScrollTop(99999)

    // 处理最终内容
    if (type.value === '2') {
      try {
        formMap.value = JSON.parse(obj.rawContent.split('json')[1].split('```')[0])

        handleInput()
      } catch (e) {
        console.error('解析JSON失败:', e)
      }
    }
    sendLoading.value = false
    nextTick(() => {
      scrollbar.value?.setScrollTop(99999)
    })
  }

  const handleInput = () => {
    const arr = xlsxData.value;
    chrome.runtime.sendMessage({
      type: 'FROM_SIDE_PANEL_TO_INPUT_FORM',
      data: {
        excelData: arr,
        formData: formMap.value
      }
    });
  }

  return {
    messages,
    inputMessage,
    indexTemp,
    taklToHtml,
    pageInfo,
    sendLoading,
    formMap,
    addMessage,
    sendRequese,
    getPageInfo,
    streamRes,
    handleInput
  }
}