联大学堂河科大自动自动刷课、答题、考试

联大学堂河科大自动刷课答题考试，进入答题或课程页面，点击右上角红色“开始”按钮，即可自动刷课、答题、考试。
当前为 2023-04-11 提交的版本，查看最新版本。
换行
// ==UserScript==
// @name         联大学堂河科大自动自动刷课、答题、考试
// @namespace    http://tampermonkey.net/
// @version      1.0.1
// @description  联大学堂河科大自动刷课答题考试，进入答题或课程页面，点击右上角红色“开始”按钮，即可自动刷课、答题、考试。
// @author       zxyong
// @match        *://*.jxjypt.cn/classroom/start*
// @match        *://*.jxjypt.cn/paper/start*
// @icon         https://kc.jxjypt.cn/favicon.ico
// @grant        none
// @license      MIT
// ==/UserScript==

'use strict'

let timer = 0

;(function () {
  const btn = document.createElement('button')
  btn.style.cssText = `
      position: fixed;
      z-index: 99999;
      top: 0;
      right: 0;
      padding: 10px 50px;
      background: red;
      color: white;
      cursor: pointer;
      border: 2px solid white;
      box-shadow: 0 0 10px #999;
    `
  btn.innerText = '开始'

  btn.addEventListener('click', () => {
    if (timer) {
      clearInterval(timer)
      timer = 0
      btn.innerText = '开始'
    } else {
      btn.innerText = '暂停'
      const path = location.pathname
      if (path === '/classroom/start') {
        // 视频课
        doVideoCourse()
      } else if (path === '/paper/start') {
        // 课程作业或考试
        doPaper()
      } else {
        btn.innerText = '开始'
      }
    }
  })
  document.body.appendChild(btn)
})()

/** 视频课 */
function doVideoCourse() {
  const courseList = document.querySelectorAll('.course-l .course-list-txt')
  const unplayedList = [] // 待做课程id
  courseList.forEach(item => {
    const sections = item.querySelectorAll('dd.z-gery-icon')
    sections.forEach(section => {
      const unplay = section.querySelector('.fa-youtube-play')
      if (unplay) {
        unplayedList.push(section.dataset.jieId)
      }
    })
  })
  // console.log(unplayedList)

  function nextVideo() {
    const section = document.querySelector(
      `dd[data-jie-id="${unplayedList[0]}"]`
    )
    section.parentElement.querySelector('dt.z-gery-icon').click()
    section.click()
    setTimeout(async () => {
      const video = document
        .querySelector('#video-content')
        .querySelector('video')
      if (video) {
        video.play()
      }

      const question = document.querySelector('#question-area .m-question')
      // console.log(question)
      const qid = question.dataset.qid
      const answer = await getAnswerByQid(qid)
      document
        .querySelector(`.m-question-option[data-value="${answer}"]`)
        .click()

      unplayedList.shift()
      console.log(`Done ${qid}, ${unplayedList.length} left`)
    }, 1000)
  }

  if (!unplayedList.length) {
    clearInterval(timer)
    alert('当前页面全部课程已完成')
    return
  }
  setTimeout(nextVideo, 1000)
  timer = setInterval(nextVideo, 1000 * 5)
}

/** 课程作业或考试 */
let qIndex = 0
function doPaper() {
  const qList = document.querySelectorAll('#questionModule > ul > li')
  timer = setInterval(async () => {
    if (qIndex === qList.length) {
      clearInterval(timer)
      document.querySelector('#btn_submit').click()
      return
    }

    const qid = qList[qIndex].querySelector(
      `input[name="qid[${qIndex}]"]`
    ).value
    const answer = await getAnswerByQid(qid)

    const options = qList[qIndex].querySelector('dl.sub-answer')
    if (options) {
      // 选择题
      answer.forEach(a => {
        options.querySelector(`dd[data-value="${a}"]`).click()
      })
    } else {
      // 填空 简答
      qList[qIndex].querySelector('.mater-respond textarea').value = answer
    }
    qIndex++
    console.log(`Done ${qid}, ${qList.length - qIndex} left`)
  }, 1000)
}

function getApiUrl(qid) {
  return `https://kc.jxjypt.cn/classroom/favorite/question/view?qid=${qid}&ver=0`
}

/** 获取答案 */
async function getAnswerByQid(qid) {
  const data = await fetch(getApiUrl(qid))
  const text = await data.text()
  const parser = new DOMParser()
  const html = parser.parseFromString(text, 'text/html')
  let answer
  const right = html.querySelector('.right')

  if (right) {
    const text = right.innerText.trim()
    if (text === '错') {
      // 判断题
      answer = ['错误']
    } else if (text === '对') {
      answer = ['正确']
    } else {
      // 选择题
      answer = right.innerText.trim().split('')
    }
  } else {
    // 填空 简答
    answer = html.querySelector('.wenzi').innerText.trim()
  }

  return answer
}
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