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index.js
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index.js
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const fs = require('fs')
const path = require('path')
const puppeteer = require('puppeteer')
const express = require('express')
const app = express()
const cors = require('cors')
const {
checkIsExisted,
checkIsOnlyDirExisted,
recordScreen,
openBBB,
startWebinarVideo,
createOutputDir,
getLastPart,
mergeVideoAndAudio,
validateURL
} = require('./helpers')
const port = 3000
app.listen(port, () => console.log(`App started on port ${port}`))
app.use(cors())
app.get('/', async (req, res) => {
try {
const { bbb_url } = req.query
if (!bbb_url) {
return res.status(500).json({
message: 'bbb_url is required in query parameters'
})
}
if (!validateURL(bbb_url)) {
return res.status(500).json({
message: 'bbb_url must be like <domain>/playback/presentation/<v>/<id>'
})
}
if (checkIsExisted(bbb_url)) {
console.log('The recording exists')
const p = path.join(__dirname, PROJECTS_DIR, getLastPart(bbb_url), finalFileName)
console.log({ p })
return res.download(p)
}
if (checkIsOnlyDirExisted(bbb_url)) {
return res.status(200).json({
message: 'The recording is still preparing.',
status: 'PREPARING'
})
}
start(bbb_url)
return res.status(200).json({
message: 'The recording has started preparing.',
status: 'PREPARING'
})
} catch (error) {
console.error(error)
return res.status(500).json({
error
})
}
})
app.get('/check', (req, res) => {
const { bbb_url } = req.query
if (!bbb_url) {
return res.status(500).json({
message: 'bbb_url is required in query parameters'
})
}
const existed = checkIsExisted(bbb_url)
if (checkIsOnlyDirExisted(bbb_url)) {
return res.status(200).json({
result: existed,
status: 'PREPARING'
})
}
return res.status(200).json({
result: existed,
status: existed
? 'READY'
: 'ABSENT'
})
})
const start = async (bbb_url) => {
try {
const browser = await puppeteer.launch()
const page = await browser.newPage()
await openBBB(page, bbb_url)
await startWebinarVideo(page)
const projectId = getLastPart(bbb_url)
const outputDir = await createOutputDir(projectId)
await recordScreen(outputDir, page)
const mergedVideoPath = await mergeVideoAndAudio(outputDir)
return fs.promises.readFile(mergedVideoPath)
} catch (e) {
console.error(e)
}
}