// ==UserScript==
// @name         Github 增强 - 高速下载
// @version      1.2.4
// @author       X.I.U
// @description  高速下载 Clone、Release、Raw、Code(ZIP) 等文件、项目列表单文件快捷下载 (☁)
// @match        https://github.com/*/*
// @match        https://github.com/*/*/releases
// @match        https://github.com/*/*/releases/*
// @icon         https://github.githubassets.com/favicon.ico
// @require      https://cdn.bootcss.com/jquery/3.4.1/jquery.min.js
// @grant        GM_registerMenuCommand
// @grant        GM_unregisterMenuCommand
// @grant        GM_openInTab
// @grant        GM_getValue
// @grant        GM_setValue
// @grant        GM_notification
// @license      GPL-3.0 License
// @run-at       document-end
// @namespace    https://greasyfork.org/scripts/412245
// ==/UserScript==

(function () {
  console.log('github script  loaded')
  var download_url = [
    'https://gh.con.sh',
    'https://gh.api.99988866.xyz',
    'https://download.fastgit.org',
    'https://pd.zwc365.com/seturl',
    'https://g.ioiox.com',
    'https://git.yumenaka.net'
  ]
  var download_url_name = ['美国', '美国', '日本东京', '中国香港', '中国香港', '美国洛杉矶']
  var clone_url = [
    'https://hub.fastgit.org',
    'https://gitclone.com',
    'https://github.com.cnpmjs.org'
  ]
  var raw_url = [
    'https://raw.githubusercontent.com',
    'https://cdn.jsdelivr.net',
    'https://raw.fastgit.org'
  ]
  var raw_url_name = ['Github 原生', '中国国内', '中国香港', '美国洛杉矶']
  var raw_url_tip = [
    '',
    '注意：该加速源存在缓存机制（24小时），所以文件可能不是最新。&#10;注意：当前分支所有文件总文件大小超过 50MB 时，该加速源不可用。&#10;注意：当前分支名为版本号格式时（如 v1.2.3），该高速下载链接因格式限制不可用。&#10;&#10;',
    '注意：单个文件太大时可能会提示超时（实时获取中），请重试。&#10;&#10;',
    '注意：经过测试，该加速源存在文件格式限制，如果无法下载说明不支持该文件格式。&#10;&#10;'
  ]
  var svg = [
    '<svg class="octicon octicon-file-zip mr-3" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path fill-rule="evenodd" d="M3.5 1.75a.25.25 0 01.25-.25h3a.75.75 0 000 1.5h.5a.75.75 0 000-1.5h2.086a.25.25 0 01.177.073l2.914 2.914a.25.25 0 01.073.177v8.586a.25.25 0 01-.25.25h-.5a.75.75 0 000 1.5h.5A1.75 1.75 0 0014 13.25V4.664c0-.464-.184-.909-.513-1.237L10.573.513A1.75 1.75 0 009.336 0H3.75A1.75 1.75 0 002 1.75v11.5c0 .649.353 1.214.874 1.515a.75.75 0 10.752-1.298.25.25 0 01-.126-.217V1.75zM8.75 3a.75.75 0 000 1.5h.5a.75.75 0 000-1.5h-.5zM6 5.25a.75.75 0 01.75-.75h.5a.75.75 0 010 1.5h-.5A.75.75 0 016 5.25zm2 1.5A.75.75 0 018.75 6h.5a.75.75 0 010 1.5h-.5A.75.75 0 018 6.75zm-1.25.75a.75.75 0 000 1.5h.5a.75.75 0 000-1.5h-.5zM8 9.75A.75.75 0 018.75 9h.5a.75.75 0 010 1.5h-.5A.75.75 0 018 9.75zm-.75.75a1.75 1.75 0 00-1.75 1.75v3c0 .414.336.75.75.75h2.5a.75.75 0 00.75-.75v-3a1.75 1.75 0 00-1.75-1.75h-.5zM7 12.25a.25.25 0 01.25-.25h.5a.25.25 0 01.25.25v2.25H7v-2.25z"></path></svg>',
    '<svg class="octicon octicon-clippy" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path fill-rule="evenodd" d="M5.75 1a.75.75 0 00-.75.75v3c0 .414.336.75.75.75h4.5a.75.75 0 00.75-.75v-3a.75.75 0 00-.75-.75h-4.5zm.75 3V2.5h3V4h-3zm-2.874-.467a.75.75 0 00-.752-1.298A1.75 1.75 0 002 3.75v9.5c0 .966.784 1.75 1.75 1.75h8.5A1.75 1.75 0 0014 13.25v-9.5a1.75 1.75 0 00-.874-1.515.75.75 0 10-.752 1.298.25.25 0 01.126.217v9.5a.25.25 0 01-.25.25h-8.5a.25.25 0 01-.25-.25v-9.5a.25.25 0 01.126-.217z"></path></svg>',
    '<svg class="octicon octicon-cloud-download" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path d="M9 12h2l-3 3-3-3h2V7h2v5zm3-8c0-.44-.91-3-4.5-3C5.08 1 3 2.92 3 5 1.02 5 0 6.52 0 8c0 1.53 1 3 3 3h3V9.7H3C1.38 9.7 1.3 8.28 1.3 8c0-.17.05-1.7 1.7-1.7h1.3V5c0-1.39 1.56-2.7 3.2-2.7 2.55 0 3.13 1.55 3.2 1.8v1.2H12c.81 0 2.7.22 2.7 2.2 0 2.09-2.25 2.2-2.7 2.2h-2V11h2c2.08 0 4-1.16 4-3.5C16 5.06 14.08 4 12 4z"></path></svg>'
  ]
  var style = ['padding:0 6px;margin-right: -1px;border-radius: 2px;background-color: #ffffff;border-color: rgba(27, 31, 35, 0.1);font-size: 11px;color: #888888;']

  var menu_raw_fast = GM_getValue('xiu2_menu_raw_fast')
  var menu_menu_raw_fast_ID; var menu_feedBack_ID
  if (menu_raw_fast == null || menu_raw_fast == '中国国内') { menu_raw_fast = 1; GM_setValue('xiu2_menu_raw_fast', 1) }; // 调整上个版本的设置存储变量内容

  registerMenuCommand()
  // 注册脚本菜单
  function registerMenuCommand () {
    if (menu_feedBack_ID) { // 如果反馈菜单ID不是 null，则删除所有脚本菜单
      GM_unregisterMenuCommand(menu_menu_raw_fast_ID)
      GM_unregisterMenuCommand(menu_feedBack_ID)
      menu_raw_fast = GM_getValue('xiu2_menu_raw_fast')
    }
    menu_menu_raw_fast_ID = GM_registerMenuCommand(`🔄 [ ${raw_url_name[menu_raw_fast]} ] 加速源 (☁) - 点击切换`, menu_toggle_raw_fast)
    menu_feedBack_ID = GM_registerMenuCommand('💬 反馈 & 建议 [Github]', function () { window.GM_openInTab('https://github.com/XIU2/UserScript', { active: true, insert: true, setParent: true }) })
  }

  // 切换加速源
  function menu_toggle_raw_fast () {
    if (menu_raw_fast >= raw_url_name.length - 1) { // 如果当前加速源位置大于等于加速源总数，则改为第一个加速源，反之递增下一个加速源
      menu_raw_fast = 0
    } else {
      menu_raw_fast += 1
    }
    GM_setValue('xiu2_menu_raw_fast', menu_raw_fast)
    console.log(11111)
    delDownLink() // 删除旧加速源
    console.log(22222)
    addDownLink() // 添加新加速源
    console.log(33333)
    GM_notification(`已切换加速源为：${raw_url_name[menu_raw_fast]}`) // 提示消息
    registerMenuCommand() // 重新注册脚本菜单
  };

  addRelease() // Release 加速
  addDownloadZIP() // Source Code 加速
  addGitClone() // Download ZIP/Code(ZIP) 加速
  addRawFile() // Raw 加速
  setTimeout(addDownLink, 2000) // 添加 Raw 下载链接（☁），延迟 2 秒执行，避免被 pjax 刷掉

  document.addEventListener('pjax:success', function () { // pjax 事件发生后
    addRelease() // Release 加速
    addDownloadZIP() // Source Code 加速
    addGitClone() // Download ZIP/Code(ZIP) 加速
    addRawFile() // 添加 Raw 加速按钮
    setTimeout(addDownLink, 2000) // 添加 Raw 下载链接（☁），延迟 2 秒执行，避免被 pjax 刷掉
  })

  // Release
  function addRelease () {
    $('.Box.Box--condensed').each(function () {
      $(this).find('.d-flex.Box-body>a').each(function () {
        var href = $(this).attr('href')
        var url = [
          download_url[0] + '/https://github.com' + href,
          download_url[1] + '/https://github.com' + href,
          download_url[2] + href,
          download_url[3] + '/https://github.com' + href,
          download_url[4] + '/https://github.com' + href,
          download_url[5] + '/https://github.com' + href
        ]
        var html = `<div style="display: flex;justify-content: flex-end;">
<div><a style="${style[0]}" class="btn" href="${url[0]}" rel="noreferrer noopener nofollow">${download_url_name[0]}</a></div>
<div><a style="${style[0]}" class="btn" href="${url[1]}" rel="noreferrer noopener nofollow">${download_url_name[1]}</a></div>
<div><a style="${style[0]}" class="btn" href="${url[2]}" rel="noreferrer noopener nofollow">${download_url_name[2]}</a></div>
<div><a style="${style[0]}" class="btn" href="${url[3]}" rel="noreferrer noopener nofollow">${download_url_name[3]}</a></div>
<div><a style="${style[0]}" class="btn" href="${url[4]}" rel="noreferrer noopener nofollow">${download_url_name[4]}</a></div>
<div><a style="${style[0]}" class="btn" href="${url[5]}" rel="noreferrer noopener nofollow">${download_url_name[5]}</a></div>
</div>`
        $(this).next().after(html)
      })
      // 修改[文件大小]元素样式
      document.querySelectorAll('small.pl-2.text-gray.flex-shrink-0').forEach(el => el.style.cssText = 'display: flex; justify-content: flex-end; flex-grow: 1; margin-right: 8px;')

      // Source Code
      $(this).find('.d-block.Box-body>a').each(function () {
        var href = $(this).attr('href')
        var url = [
          download_url[0] + '/https://github.com' + href,
          download_url[1] + '/https://github.com' + href,
          download_url[2] + href,
          download_url[3] + '/https://github.com' + href,
          download_url[4] + '/https://github.com' + href,
          download_url[5] + '/https://github.com' + href
        ]
        var html = `<div style="display: flex;justify-content: flex-end;flex-grow: 1;">
<div><a style="${style[0]}" class="btn" href="${url[0]}" rel="noreferrer noopener nofollow">${download_url_name[0]}</a></div>
<div><a style="${style[0]}" class="btn" href="${url[1]}" rel="noreferrer noopener nofollow">${download_url_name[1]}</a></div>
<div><a style="${style[0]}" class="btn" href="${url[2]}" rel="noreferrer noopener nofollow">${download_url_name[2]}</a></div>
<div><a style="${style[0]}" class="btn" href="${url[3]}" rel="noreferrer noopener nofollow">${download_url_name[3]}</a></div>
<div><a style="${style[0]}" class="btn" href="${url[4]}" rel="noreferrer noopener nofollow">${download_url_name[4]}</a></div>
<div><a style="${style[0]}" class="btn" href="${url[5]}" rel="noreferrer noopener nofollow">${download_url_name[5]}</a></div>
</div>`
        $(this).after(html)
      })
    })
    // 修改 Source code 样式，使其和加速按钮并列一排
    document.querySelectorAll('div.d-block.py-1.py-md-2.Box-body.px-2').forEach(el => el.className = 'd-flex py-1 py-md-2 Box-body px-2')
  }

  // Download ZIP
  function addDownloadZIP () {
    $('.dropdown-menu.dropdown-menu-sw.p-0 ul li:last-child').each(function () {
      var href = $(this).children('a').attr('href')
      var url = [
        download_url[0] + '/https://github.com' + href,
        download_url[1] + '/https://github.com' + href,
        download_url[2] + href,
        download_url[3] + '/https://github.com' + href,
        download_url[4] + '/https://github.com' + href,
        download_url[5] + '/https://github.com' + href
      ]
      var html = `
<li class="Box-row Box-row--hover-gray p-0"><a class="d-flex flex-items-center text-gray-dark text-bold no-underline p-3" rel="noreferrer noopener nofollow" href="${url[0]}">${svg[0]}Download ZIP ${download_url_name[0]}</a></li>
<li class="Box-row Box-row--hover-gray p-0"><a class="d-flex flex-items-center text-gray-dark text-bold no-underline p-3" rel="noreferrer noopener nofollow" href="${url[1]}">${svg[0]}Download ZIP ${download_url_name[1]}</a></li>
<li class="Box-row Box-row--hover-gray p-0"><a class="d-flex flex-items-center text-gray-dark text-bold no-underline p-3" rel="noreferrer noopener nofollow" href="${url[2]}">${svg[0]}Download ZIP ${download_url_name[2]}</a></li>
<li class="Box-row Box-row--hover-gray p-0"><a class="d-flex flex-items-center text-gray-dark text-bold no-underline p-3" rel="noreferrer noopener nofollow" href="${url[3]}">${svg[0]}Download ZIP ${download_url_name[3]}</a></li>
<li class="Box-row Box-row--hover-gray p-0"><a class="d-flex flex-items-center text-gray-dark text-bold no-underline p-3" rel="noreferrer noopener nofollow" href="${url[4]}">${svg[0]}Download ZIP ${download_url_name[4]}</a></li>
<li class="Box-row Box-row--hover-gray p-0"><a class="d-flex flex-items-center text-gray-dark text-bold no-underline p-3" rel="noreferrer noopener nofollow" href="${url[5]}">${svg[0]}Download ZIP ${download_url_name[5]}</a></li>
`
      $(this).after(html)
    })
  }

  // Git Clone
  function addGitClone () {
    $("[role='tabpanel'] div.input-group").first().each(function () {
      var href_split = location.href.split('/')
      var url = [
        clone_url[0] + '/' + href_split[3] + '/' + href_split[4] + '.git',
        clone_url[1] + '/github.com/' + href_split[3] + '/' + href_split[4] + '.git',
        clone_url[2] + '/' + href_split[3] + '/' + href_split[4] + '.git'
      ]
      var html = `
<div class="input-group" style="margin-top: 4px;"><input value="${url[0]}" aria-label="${url[0]}" type="text" class="form-control input-monospace input-sm bg-gray-light" data-autoselect="" readonly=""><div class="input-group-button"><clipboard-copy value="${url[0]}" aria-label="Copy to clipboard" class="btn btn-sm" tabindex="0" role="button">${svg[1]}</clipboard-copy></div></div>
<div class="input-group" style="margin-top: 4px;"><input value="${url[1]}" aria-label="${url[1]}" type="text" class="form-control input-monospace input-sm bg-gray-light" data-autoselect="" readonly=""><div class="input-group-button"><clipboard-copy value="${url[1]}" aria-label="Copy to clipboard" class="btn btn-sm" tabindex="0" role="button">${svg[1]}</clipboard-copy></div></div>
<div class="input-group" style="margin-top: 4px;"><input value="${url[2]}" aria-label="${url[2]}" type="text" class="form-control input-monospace input-sm bg-gray-light" data-autoselect="" readonly=""><div class="input-group-button"><clipboard-copy value="${url[2]}" aria-label="Copy to clipboard" class="btn btn-sm" tabindex="0" role="button">${svg[1]}</clipboard-copy></div></div>
`
      $(this).after(html)
    })
  }

  // Raw
  function addRawFile () {
    $('#raw-url').each(function () {
      var href = location.href.replace('https://github.com', '')
      var href2 = href.replace('/blob/', '/')
      var url = [
        raw_url[1] + '/gh' + href.replace('/blob/', '@'),
        raw_url[2] + href2,
        download_url[5] + '/' + raw_url[0] + href2
      ]
      var html = `
<a href="${url[0]}" title="${raw_url_tip[1]}" role="button" rel="noreferrer noopener nofollow" class="btn btn-sm BtnGroup-item">${raw_url_name[1]}</a>
<a href="${url[1]}" title="${raw_url_tip[2]}" role="button" rel="noreferrer noopener nofollow" class="btn btn-sm BtnGroup-item">${raw_url_name[2]}</a>
<a href="${url[2]}" title="${raw_url_tip[3]}" role="button" rel="noreferrer noopener nofollow" class="btn btn-sm BtnGroup-item">${raw_url_name[3]}</a>
`
      $(this).after(html)
    })
  }

  // 添加 Raw 下载链接（☁）
  function addDownLink () {
    // 如果不是项目文件页面，就返回
    var files = $('div.Box-row svg.octicon.octicon-file')
    if (files.length === 0) return
    var files1 = $('a.fileDownLink')
    if (files1.length > 0) return

    // 鼠标指向则显示
    var mouseOverHandler = function (evt) {
      var elem = evt.currentTarget
      var aElm_new = elem.querySelectorAll('.fileDownLink')
      var aElm_now = elem.querySelectorAll('svg.octicon.octicon-file.text-gray-light')
      aElm_new.forEach(el => el.style.cssText = 'display: inline')
      aElm_now.forEach(el => el.style.cssText = 'display: none')
    }

    // 鼠标离开则隐藏
    var mouseOutHandler = function (evt) {
      var elem = evt.currentTarget
      var aElm_new = elem.querySelectorAll('.fileDownLink')
      var aElm_now = elem.querySelectorAll('svg.octicon.octicon-file.text-gray-light')
      aElm_new.forEach(el => el.style.cssText = 'display: none')
      aElm_now.forEach(el => el.style.cssText = 'display: inline')
    }

    // 循环添加
    files.each(function (i, fileElm) {
      var trElm = fileElm.parentNode.parentNode
      var cntElm_a = trElm.querySelector('.css-truncate.css-truncate-target.d-block.width-fit a')
      var cntElm_svg = trElm.querySelector('.mr-3.flex-shrink-0 svg.octicon.octicon-file.text-gray-light')
      var Name = cntElm_a.innerText
      var href = cntElm_a.attributes.href.nodeValue.replace('https://github.com', '')
      var href2 = href.replace('/blob/', '/'); var url; var url_name; var url_tip = ''
      switch (menu_raw_fast) {
        case 0:
          url = raw_url[0] + href2
          url_name = raw_url_name[0]
          url_tip = raw_url_tip[0]
          break
        case 1:
          url = raw_url[1] + '/gh' + href.replace('/blob/', '@')
          url_name = raw_url_name[1]
          url_tip = raw_url_tip[1]
          break
        case 2:
          url = raw_url[2] + href2
          url_name = raw_url_name[2]
          url_tip = raw_url_tip[2]
          break
        case 3:
          url = download_url[5] + '/' + raw_url[0] + href2
          url_name = download_url_name[5]
          url_tip = raw_url_tip[3]
          break
      }
      var html = ` <a href="${url}" download="${Name}" target="_blank" rel="noreferrer noopener nofollow" class="fileDownLink" style="display: none;" title="「${url_name}」&#10;&#10;[Alt + 左键] 或 [右键 - 另存为...] 下载文件。&#10;注意：鼠标点击 [☁] 图标，而不是左侧的文件名！&#10;&#10;${url_tip}提示：点击浏览器右上角 Tampermonkey 扩展图标 - [ ${raw_url_name[menu_raw_fast]} ] 加速源 (☁) 即可切换。">${svg[2]}</a>`
      $(cntElm_svg).after(html)
      // 绑定鼠标事件
      trElm.onmouseover = mouseOverHandler
      trElm.onmouseout = mouseOutHandler
    })
  }

  // 删除 Raw 快捷下载（☁）
  function delDownLink () {
    var aElm = document.querySelectorAll('.fileDownLink')
    for (var num = 0; num < aElm.length; num++) {
      aElm[num].remove()
    };
  }
})()
