241 lines
6.3 KiB
JavaScript
241 lines
6.3 KiB
JavaScript
import template from 'art-template'
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import fs from 'fs'
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import lodash from 'lodash'
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import chokidar from 'chokidar'
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import cfg from '../config/config.js'
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const _path = process.cwd()
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let puppeteer = {}
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class Puppeteer {
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constructor () {
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this.browser = false
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this.lock = false
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this.shoting = []
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/** 截图数达到时重启浏览器 避免生成速度越来越慢 */
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this.restartNum = 100
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/** 截图次数 */
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this.renderNum = 0
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this.config = {
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headless: true,
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args: [
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'--disable-gpu',
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'--disable-setuid-sandbox',
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'--no-sandbox',
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'--no-zygote',
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'--single-process'
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]
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}
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if (cfg.bot?.chromium_path) {
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/** chromium其他路径 */
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this.config.executablePath = cfg.bot.chromium_path
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}
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this.html = {}
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this.watcher = {}
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this.createDir('./temp/html')
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}
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async initPupp () {
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if (!lodash.isEmpty(puppeteer)) return puppeteer
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puppeteer = (await import('puppeteer')).default
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return puppeteer
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}
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createDir (dir) {
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if (!fs.existsSync(dir)) {
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let dirs = dir.split('/')
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for (let idx = 1; idx <= dirs.length; idx++) {
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let temp = dirs.slice(0, idx).join('/')
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if (!fs.existsSync(temp)) {
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fs.mkdirSync(temp)
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}
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}
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}
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}
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/**
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* 初始化chromium
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*/
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async browserInit () {
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await this.initPupp()
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if (this.browser) return this.browser
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if (this.lock) return false
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this.lock = true
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logger.mark('puppeteer Chromium 启动中...')
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/** 初始化puppeteer */
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this.browser = await puppeteer.launch(this.config).catch((err, trace) => {
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let errMsg = err.toString() + (trace ? trace.toString() : '')
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if (typeof err == 'object') {
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logger.error(JSON.stringify(err))
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} else {
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logger.error(err.toString())
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if (errMsg.includes('Could not find Chromium')) {
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logger.error('没有正确安装Chromium，可以尝试执行安装命令：node ./node_modules/puppeteer/install.js')
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} else if (errMsg.includes('libatk-bridge')) {
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logger.error('没有正确安装Chromium，可尝试执行 sudo yum install -y chromium')
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}
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}
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console.log(err, trace)
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})
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this.lock = false
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if (!this.browser) {
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logger.error('puppeteer Chromium 启动失败')
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return false
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}
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logger.mark('puppeteer Chromium 启动成功')
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/** 监听Chromium实例是否断开 */
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this.browser.on('disconnected', (e) => {
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logger.error('Chromium实例关闭或崩溃！')
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this.browser = false
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})
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return this.browser
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}
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/**
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* `chromium` 截图
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* @param data 模板参数
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* @param data.tplFile 模板路径，必传
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* @param data.saveId 生成html名称，为空name代替
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* @param data.imgType screenshot参数，生成图片类型：jpeg，png
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* @param data.quality screenshot参数，图片质量 0-100，jpeg是可传，默认90
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* @param data.omitBackground screenshot参数，隐藏默认的白色背景，背景透明。默认不透明
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* @param data.path screenshot参数，截图保存路径。截图图片类型将从文件扩展名推断出来。如果是相对路径，则从当前路径解析。如果没有指定路径，图片将不会保存到硬盘。
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* @return icqq img
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*/
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async screenshot (name, data = {}) {
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if (!await this.browserInit()) {
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return false
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}
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let savePath = this.dealTpl(name, data)
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if (!savePath) return false
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let buff = ''
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let start = Date.now()
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this.shoting.push(name)
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try {
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const page = await this.browser.newPage()
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await page.goto(`file://${_path}${lodash.trim(savePath, '.')}`, data.pageGotoParams || {})
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let body = await page.$('#container') || await page.$('body')
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let randData = {
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// encoding: 'base64',
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type: data.imgType || 'jpeg',
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omitBackground: data.omitBackground || false,
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quality: data.quality || 90,
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path: data.path || ''
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}
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if (data.imgType === 'png') delete randData.quality
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buff = await body.screenshot(randData)
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page.close().catch((err) => logger.error(err))
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} catch (error) {
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logger.error(`图片生成失败:${name}:${error}`)
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/** 关闭浏览器 */
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if (this.browser) {
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await this.browser.close().catch((err) => logger.error(err))
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}
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this.browser = false
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buff = ''
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return false
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}
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this.shoting.pop()
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if (!buff) {
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logger.error(`图片生成为空:${name}`)
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return false
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}
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this.renderNum++
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/** 计算图片大小 */
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let kb = (buff.length / 1024).toFixed(2) + 'kb'
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logger.mark(`[图片生成][${name}][${this.renderNum}次] ${kb} ${logger.green(`${Date.now() - start}ms`)}`)
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this.restart()
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return segment.image(buff)
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}
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/** 模板 */
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dealTpl (name, data) {
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let { tplFile, saveId = name } = data
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let savePath = `./temp/html/${name}/${saveId}.html`
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/** 读取html模板 */
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if (!this.html[tplFile]) {
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this.createDir(`./temp/html/${name}`)
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try {
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this.html[tplFile] = fs.readFileSync(tplFile, 'utf8')
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} catch (error) {
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logger.error(`加载html错误：${tplFile}`)
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return false
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}
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this.watch(tplFile)
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}
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data.resPath = `${_path}/resources/`
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/** 替换模板 */
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let tmpHtml = template.render(this.html[tplFile], data)
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/** 保存模板 */
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fs.writeFileSync(savePath, tmpHtml)
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logger.debug(`[图片生成][使用模板] ${savePath}`)
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return savePath
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}
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/** 监听配置文件 */
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watch (tplFile) {
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if (this.watcher[tplFile]) return
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const watcher = chokidar.watch(tplFile)
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watcher.on('change', path => {
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delete this.html[tplFile]
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logger.mark(`[修改html模板] ${tplFile}`)
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})
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this.watcher[tplFile] = watcher
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}
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/** 重启 */
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restart () {
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/** 截图超过重启数时，自动关闭重启浏览器，避免生成速度越来越慢 */
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if (this.renderNum % this.restartNum === 0) {
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if (this.shoting.length <= 0) {
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setTimeout(async () => {
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if (this.browser) {
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await this.browser.close().catch((err) => logger.error(err))
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}
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this.browser = false
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logger.mark('puppeteer 关闭重启...')
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}, 100)
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}
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}
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}
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}
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export default new Puppeteer()
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