feat: BIT-物理实验中心-下载日历 (#18)

Co-authored-by: CJJ-amateur-programmer <161215070+CJJ-amateur-programmer@users.noreply.github.com>
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

TamperMonkey/BIT-物理实验中心-下载日历.md

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+# BIT-物理实验中心-下载日历
+
+在[北京理工大学物理实验选课系统](http://10.133.22.200:7100)上发送并处理网络请求，将课程表下载为 iCalendar 格式（`*.ics`），可供导入一般日历软件。
+
+在脚本管理器（如[篡改猴](https://www.tampermonkey.net/)）的菜单中可以找到“导出当前物理实验课表”选项，单击即可。

TamperMonkey/BIT-物理实验中心-下载日历.user.js

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+// ==UserScript==
+// @name         BIT-物理实验中心-下载日历
+// @namespace    http://tampermonkey.net/
+// @version      0.1.1
+// @description  生成课程表的 iCalendar 文件并下载
+// @license      GPL-3.0-or-later
+// @supportURL   https://github.com/YDX-2147483647/BIT-enhanced/issues
+// @author       CJJ
+// @match        http://10.133.22.200:7100/*
+// @grant        GM_registerMenuCommand
+// ==/UserScript==
+
+(function () {
+  'use strict'
+  /* global GM_registerMenuCommand */
+
+  GM_registerMenuCommand('导出当前物理实验课表', function () {
+    const xhr = new XMLHttpRequest()
+    xhr.open('POST', 'http://10.133.22.200:7100/XPK/StuCourseElective/LoadUsedLabCourses', true)
+    xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded')
+    xhr.onreadystatechange = function () {
+      if (xhr.readyState === 4 && xhr.status === 200) {
+        let content =
+`BEGIN:VCALENDAR
+VERSION:2.0
+PRODID:-//BIT-enhanced//PHYEXP//
+TZID:Asia/Shanghai
+X-WR-CALNAME:物理实验课程表
+`
+        const downloadLink = document.createElement('a')
+        const phyexp = JSON.parse(xhr.responseText)
+        for (let i = 0; i < phyexp.rows.length; i++) {
+          content +=
+`BEGIN:VEVENT
+SUMMARY:${phyexp.rows[i].CourseName} ${phyexp.rows[i].LabName}
+LOCATION:物理实验中心${phyexp.rows[i].ClassRoom}
+DESCRIPTION:${phyexp.rows[i].TeacherName} | ${phyexp.rows[i].Weeks}周 ${phyexp.rows[i].WeekName} ${phyexp.rows[i].TimePartName} ${phyexp.rows[i].ClassRoom} 座位号${phyexp.rows[i].SeatNo}
+DTSTART:${phyexp.rows[i].ClassDate.replace(/(\w+)\/(\w+)\/(\w+)/, (all, y, m, d) => y + m.padStart(2, '0') + d.padStart(2, '0')).substr(0, 8)}T${phyexp.rows[i].StartTime.replace(':', '')}00
+DTEND:${phyexp.rows[i].ClassDate.replace(/(\w+)\/(\w+)\/(\w+)/, (all, y, m, d) => y + m.padStart(2, '0') + d.padStart(2, '0')).substr(0, 8)}T${phyexp.rows[i].EndTime.replace(':', '')}00
+UID:${phyexp.rows[i].TeacherID}-${phyexp.rows[i].Weeks}-${phyexp.rows[i].TimePartID}-${phyexp.rows[i].LabID}-${phyexp.rows[i].LabClassNo}
+END:VEVENT
+`
+        }
+        content += 'END:VCALENDAR'
+        downloadLink.href = URL.createObjectURL(new Blob([content], { type: 'text/calendar' }))
+        downloadLink.download = '物理实验课程表.ics'
+        downloadLink.click()
+      }
+    }
+    xhr.send('courseID=36&StuIds=' + document.cookie.match(/(?<=COOKIES_KEY_USERNAME=)[0-9]+/)[0] + '&isBatch=0&SemesterID=14&page=1&rows=100')
+  })
+})()