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47 lines
1.2 KiB
JavaScript
47 lines
1.2 KiB
JavaScript
/* global domtoimage */
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const PORT = parseInt(process.env.PORT, 10) || 3000
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const ARBITRARY_WAIT_TIME = 500
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module.exports = browser => async (req, res) => {
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const page = await browser.newPage()
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const { state } = req.body
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if (!state) res.status(400).send()
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try {
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await page.goto(`http://localhost:${PORT}?state=${state}`)
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await page.addScriptTag({ path: './lib/customDomToImage.js' })
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// wait for page to detect language
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await delay(ARBITRARY_WAIT_TIME)
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const targetElement = await page.$('#export-container')
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const dataUrl = await page.evaluate(target => {
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const config = {
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style: {
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transform: 'scale(2)',
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'transform-origin': 'center'
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},
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filter: n => (n.className ? String(n.className).indexOf('eliminateOnRender') < 0 : true),
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width: target.offsetWidth * 2,
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height: target.offsetHeight * 2
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}
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return domtoimage.toPng(target, config)
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}, targetElement)
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res.status(200).json({ dataUrl })
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} catch (e) {
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console.error(e)
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res.status(500).send()
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} finally {
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await page.close()
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}
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}
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// private
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function delay(ms) {
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return new Promise(r => setTimeout(r, ms))
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}
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