import {ScrollView, Text, View} from "@tarojs/components";
import {FC, useEffect, useState} from "react";
import HVideo from "@/components/video/video";
import {curriculum, HourPlayData} from "@/api";
import {Profile} from '@/store'
import Taro from "@tarojs/taro";
import Judge from "@/components/topic/judge";
import unique_ident from "@/hooks/unique_ident";
import MyButton from "@/components/button/MyButton";
import {formatMinute} from "@/utils/time";
import CustomPageContainer from "@/components/custom-page-container/custom-page-container";

interface Props {
  id: number,
  courseId: number
  preview: boolean
  curEnd: (test?: boolean) => void
}


let seek: (time: number) => void
const Course: FC<Props> = ({id, courseId, preview, curEnd}) => {
  const [breakpoint, setBreakpoint] = useState<number[]>([])   // 断点
  const [show, setShow] = useState(false)  // 题
  const [data, setData] = useState<HourPlayData | null>(null)
  const [examAll, setExamAll] = useState<Record<number, (ShareSubject | Multi)[]>>([])  // 题库
  const [time, setTime] = useState<number>(0) // 进入断点的时间
  const [validate, setValidate] = useState(false) // 开启验证
  const [record, setRecord] = useState<boolean[]>([]) // 考题记录
  const [testId, setTestId] = useState<number | null>(null)
  const {user} = Profile.useContainer()

  async function onEnded() {
    const startRecording = unique_ident.get()
    startRecording && await curriculum.curEnd(courseId, id, {...startRecording, duration: data?.duration!}) // 结束
    unique_ident.remove()

    if (testId) {
      if (preview) { // 预览
        Taro.showModal({
          title: "是否前往考试",
          success({confirm}) {
            if (confirm) {
              curEnd(true)
              Taro.navigateTo({url: `/pages/business/test/test?testId=${testId}`})
            } else {
              curEnd()
            }
          }
        })
        return
      }
      Taro.navigateTo({url: `/pages/business/test/test?testId=${testId}`})
      curEnd(true)
    } else {
      curEnd()
    }
  }

  /** 进入断点 */
  function onBreakpoint(breakpoint: number) {
    setTime(breakpoint)
    setShow(true)
  }

  async function getData() {
    unique_ident.put(id, Date.now())
    const res = await curriculum.hourPlay(courseId, id)
    if (res) {
      setData(res)
      setBreakpoint(res.timeList)
      setExamAll(res.hourExamQuestions || [])
      setTestId(res?.hour_test?.id || null)
    }
  }

  useEffect(() => {
    init()
    getData()
  }, [id])


  function init(show = true) {
    show && setShow(false)
    setValidate(false)
    setRecord([])
    setTime(0)
  }


  useEffect(() => {
    if (!record.length) return;
    const pass = record.every(d => d)
    /** 考题正确 */
    const {id: question_id, question_type} = examAll?.[time]?.[0]
    curriculum.answerRecord(id, {
      is_pass: pass,
      user_id: user?.id!,
      time: time,
      question_type,
      question_id
    }).then()

    /** 删除断点 */
    const old: number[] = JSON.parse(JSON.stringify(breakpoint))
    const index = old.indexOf(time)
    old.splice(index, 1)
    setBreakpoint(old)

    if (pass) {
      seek(time)
      init()
    }
  }, [record])

  function videoSeek(fn: (time: number) => void) {
    seek = fn
  }

  return (
    <>
      <HVideo
        duration={data?.duration || 0}
        preview={preview}
        src={data?.url || ''}
        onEnded={onEnded}
        breakpoint={breakpoint}
        onBreakpoint={onBreakpoint}
        setTime={videoSeek}
      />

      <CustomPageContainer show={show} position='bottom'>
        <View>
          <View className='text-center mt-2 text-muted'>
            <Text className='mr-2'>{formatMinute(time)}考题</Text>
          </View>
          {
            examAll?.[time]?.slice(0, 1)?.map((d) =>
              <ScrollView style='height:60vh' scrollY key={d.id}>
                {d.question_type === 2 &&
                  <Judge
                    data={d as ShareSubject}
                    validate={validate}
                    onAnswer={(isAnswer) => setRecord([isAnswer])}
                  />}
              </ScrollView>)
          }
          <View>

            <View className='statistics'>
              {
                record.length > 0
                  ? <MyButton fillet onClick={() => {
                    init();
                    seek(time)
                  }}>关闭</MyButton>
                  : <MyButton fillet onClick={() => setValidate(true)}>交卷</MyButton>
              }
            </View>
          </View>
        </View>
      </CustomPageContainer>
    </>
  )
}
export default Course