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小窗口显示U校园板块测试答案，不支持单元测试
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// ==UserScript==
// @name U校园英语网课答案显示
// @namespace askar882
// @version 1.0
// @description 小窗口显示U校园板块测试答案，不支持单元测试
// @author askar882
// @match *://ucontent.unipus.cn/_pc_default/pc.html?*
// @grant none
// @run-at document-start
// ==/UserScript==
(function() {
'use strict';
const wrapperId = "answerWrapper"
const titleId = "answerTitle"
const contentId = "answerContent"
const innerText = html => {
let div = document.createElement('div')
div.innerHTML = html
return div.firstChild.innerText
}
const knownQuestionKeys = [
"questions:shortanswer",
"shortanswer:shortanswer",
"questions:scoopquestions",
"questions:sequence",
"questions:questions"
]
const answerResolvers = [
json => {
let answer = ""
json.questions.forEach(question => {
answer += `\n${innerText(question.analysis.html)}`
})
return answer
},
json => {
return innerText(json.analysis.html)
},
json => {
let answer = ""
json.questions.forEach(question => {
answer += `\n${innerText(question.content.html)} ${question.answers.join(" | ")}`
})
return answer
},
json => {
return json.questions.map(question => question.answer).join(", ")
},
json => {
return json.questions.map(question => question.answers[0]).join(", ")
}
]
const specialQuestions = [
/^content_\d:questions$/,
]
const specialAnswerResolvers = [
json => {
let resolver = answerResolvers[knownQuestionKeys.indexOf("questions:questions")]
return Object.keys(json).sort().map((key, index) => (index+1) + ". " + resolver(json[key])).join('\n')
},
]
const showAnswer = json => {
let answer = "No answer found"
let isQuestion = true
if (json != null && json.hasOwnProperty("content")) {
let contentJson = JSON.parse(json.content)
console.log("%c%s", "color: red; font-size: 16px;", JSON.stringify(contentJson, '', 2))
let keys = Object.keys(contentJson)
let key = keys[0]
let keyIndex = knownQuestionKeys.indexOf(key)
if (keyIndex !== -1) {
answer = answerResolvers[keyIndex](contentJson[key])
} else {
let specialKeyIndex = -1
specialQuestions.forEach((pattern, index) => {
if (pattern.test(key)) {
specialKeyIndex = index
}
})
if (specialKeyIndex !== -1) {
answer = specialAnswerResolvers[specialKeyIndex](contentJson)
} else {
answer = "Not a question\n" + JSON.stringify(contentJson, '', 2)
isQuestion = false
}
}
}
let title = "参考答案"
let wrapperElem = document.getElementById(wrapperId)
let titleElem = document.getElementById(titleId)
let contentElem = document.getElementById(contentId)
if (wrapperElem !== null) {
titleElem.innerText = title
contentElem.innerText = answer
wrapperElem.style.visibility = isQuestion ? "visible" : "hidden"
return
}
if (!isQuestion) {
return
}
wrapperElem = document.createElement("div")
titleElem = document.createElement("div")
contentElem = document.createElement("div")
wrapperElem.setAttribute("id", wrapperId)
titleElem.setAttribute("id", titleId)
contentElem.setAttribute("id", contentId)
wrapperElem.setAttribute("style",
"top: 100px; left: 100px; margin: 0 auto; z-index: 1024; border-radius: 4px;"
+ " box-shadow: 0 11px 15px -7px rgba(0,0,0,.2), 0 24px 38px 3px rgba(0,0,0,.14), 0 9px 46px 8px rgba(0,0,0,.12);"
+ " position: absolute; background: #fff; width: 250px; max-height: 400px; min-height: 200px;")
titleElem.setAttribute("style", "background: inherit; height: 25px; margin-top: 10px; text-align: center; font-size: x-large")
contentElem.setAttribute("style", "margin: 10px; color: orange; font-size: medium; overflow-y: auto; max-height: 375px")
titleElem.innerText = title
contentElem.innerText = answer
makeDraggable(titleElem)
wrapperElem.appendChild(titleElem)
wrapperElem.appendChild(contentElem)
document.body.appendChild(wrapperElem)
}
const real_fetch = window.fetch
window.fetch = (url, init=null) => real_fetch(url, init).then(response => {
if (/.*\/course\/api\/content\//.test(url)) {
let res = response.clone()
res.json().then(showAnswer)
}
return response
})
function makeDraggable (elem) {
document.mouseState = 'up'
elem.mouseState = 'up'
elem.lastMousePosY = null
elem.lastMousePosX = null
elem.proposedNewPosY = parseInt(elem.style.top, 10)
elem.proposedNewPosX = parseInt(elem.style.left, 10)
document.onmousedown = _ => {
document.mouseState = 'down'
}
document.onmouseup = _ => {
document.mouseState = 'up'
elem.mouseState = 'up'
}
elem.onmousedown = e => {
elem.lastMousePosY = e.pageY
elem.lastMousePosX = e.pageX
elem.mouseState = 'down'
document.mouseState = 'down'
document.onselectstart = e => {
e.preventDefault()
return false
}
}
elem.onmouseup = e => {
elem.mouseState = 'up'
document.mouseState = 'up'
document.onselectstart = null
}
const getAtInt = (obj, attrib) => parseInt(obj.style[attrib], 10)
document.onmousemove = e => {
if ((document.mouseState === 'down') && (elem.mouseState === 'down')) {
elem.proposedNewPosY = getAtInt(elem.parentElement, 'top') + e.pageY - elem.lastMousePosY
elem.proposedNewPosX = getAtInt(elem.parentElement, 'left') + e.pageX - elem.lastMousePosX
if (elem.proposedNewPosY < 0) {
elem.parentElement.style.top = "0px"
} else if (elem.proposedNewPosY > window.innerHeight - getAtInt(elem.parentElement, 'height')) {
elem.parentElement.style.top = window.innerHeight - getAtInt(elem.parentElement, 'height') + 'px'
} else {
elem.parentElement.style.top = elem.proposedNewPosY + 'px'
}
if (elem.proposedNewPosX < 0) {
elem.parentElement.style.left = "0px"
} else if (elem.proposedNewPosX > window.innerWidth - getAtInt(elem.parentElement, 'width')) {
elem.parentElement.style.left = window.innerWidth - getAtInt(elem.parentElement, 'width') + 'px'
} else {
elem.parentElement.style.left = elem.proposedNewPosX + 'px'
}
elem.lastMousePosY = e.pageY
elem.lastMousePosX = e.pageX
}
}
}
})();