loader.github.js

//
// scriptable 加载器
// 用于加载远程 scriptable 桌面组件插件
// author@im3x
// 公众号@古人云
// https://github.com/im3x/Scriptables
//

class Im3xLoader {
 constructor (git = 'github') {
 // 仓库源
 this.git = git
 this.ver = 202010131700
 // 解析参数
 this.opt = {
 name: 'welcome',
 args: '',
 version: 'latest',
 developer: 'im3x'
 }
 let arg = args.widgetParameter || args['queryParameters']['__widget__']
 // widget@version:params
 // 第三方开发者源：user-name/widget@version:params
 if (arg) {
 let _args = arg.split(":")
 let _plug = _args[0].split("@")
 if (_plug.length === 2) {
 this.opt['version'] = _plug[1]
 }
 let _name = _plug[0].split('/')
 if (_name.length === 2) {
 this.opt['name'] = _name[1]
 this.opt['developer'] = _name[0]
 } else {
 this.opt['name'] = _name[0]
 }
 if (_args.length === 2) this.opt['args'] = _args[1]
 }
 // 缓存路径
 this.filename = `${this.opt['developer']}_${this.opt['name']}@${this.opt['version']}.js.im3x`
 this.filepath = FileManager.local().documentsDirectory() + '/' + this.filename
 this.notify()
 this.update()
 }

 async init () {
 // 判断文件是否存在
 let rendered = false
 let widget
 if (FileManager.local().fileExists(this.filepath)) {
 try {
 rendered = true
 widget = await this.render()
 } catch(e){
 rendered = false
 }
 }
 // 加载代码，存储
 try {
 let req = new Request(`https://${this.git}.com/${this.opt['developer']}/Scriptables/raw/main/${encodeURIComponent(this.opt['name'])}/${encodeURIComponent(this.opt['version'])}.js?_=${+new Date}`)
 let data = await req.loadString()
 // 如果404
 if (req.response['statusCode'] === 404) {
 return await this.renderFail('插件不存在')
 }
 await FileManager.local().writeString(this.filepath, data)
 if (!rendered) {
 widget = await this.render()
 }
 } catch (e) {
 // 网络加载失败，返回错误提示
 // 如果已经渲染了（有本地缓存，直接返回本地代码）
 if (rendered) return widget
 return await this.renderFail(e.message)
 }

 return widget
 }
 // 加载失败提示
 async renderFail (err) {
 let w = new ListWidget()
 let t1 = w.addText("⚠️")
 t1.centerAlignText()
 w.addSpacer(10)
 let t2 = w.addText(err)
 t2.textColor = Color.red()
 t2.font = Font.lightSystemFont(14)
 t2.centerAlignText()
 w.url = `https://github.com/${this.opt['developer']}/Scriptables`
 return w
 }
 // 初始化组件并渲染
 async render () {
 let M = importModule(this.filename)
 let m = new M(this.opt['args'], this)
 // 执行组件自定义方法操作
 if (!config.runsInWidget && typeof m['runActions'] === 'function') {
 try {
 let func = m.runActions.bind(m)
 await func()
 } catch (e) {
 let alert = new Alert()
 alert.title = "执行失败"
 alert.message = e.message
 alert.presentAlert()
 }
 return false
 }
 let w = await m.render()
 return w
 }
 
 // 通知
 async notify () {
 let req = new Request(`https://${this.git}.com/im3x/Scriptables/raw/main/update.notify.json?_=${+new Date}`)
 let res = await req.loadJSON()
 if (!res || !res['id']) return
 // 判断是否已经通知过
 let key = 'im3x_loader_notify'
 if (Keychain.contains(key)) {
 let cache = Keychain.get(key)
 if (cache === res['id']) return
 }
 // 通知
 let n = new Notification()
 n = Object.assign(n, res)
 n.schedule()
 // 设置已通知
 Keychain.set(key, res['id'])
 }
 // 更新加载器
 async update () {
 let req = new Request(`https://gitee.com/api/v5/repos/im3x/Scriptables/commits?path=loader.${this.git}.js&page=1&per_page=1`)
 let res = await req.loadJSON()
 let commit = res[0]
 let key = 'im3x_loader_update'
 if (Keychain.contains(key)) {
 let cache = Keychain.get(key)
 if (cache === commit['sha']) return
 }
 // 加载远程代码内容
 let req1 = new Request(`https://gitee.com/im3x/Scriptables/raw/main/loader.${this.git}.js`)
 let res1 = await req1.loadString()
 // 当前脚本的路径
 let self = module.filename
 // 读取前三行代码（包含图标信息）
 let selfContent = FileManager.local().readString(self)
 let tmp = selfContent.split("\n")
 // 放到前三行
 let new_code = `${tmp[0]}\n${tmp[1]}\n${tmp[2]}\n${res1}`
 // 写入文件
 FileManager.local().writeString(self, new_code)
 Keychain.set(key, commit['sha'])
 }
}
const Loader = new Im3xLoader()
const widget = await Loader.init()
if (config.runsInWidget && widget) {
 Script.setWidget(widget)
}
Script.complete()