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Unified feature added. #2

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105 changes: 51 additions & 54 deletions handlers/generate.js
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Original file line number Diff line number Diff line change
Expand Up @@ -4,65 +4,62 @@ const config = require('../config');
const baseURL = config('BASE_URL');
const expiresIn = config('EXPIRES_IN');

module.exports = async function(req, res) {
const errors = validationResult(req);
if (!errors.isEmpty()) {
return res.status(422).json({
success: true,
errors: errors.errors
});
};

const timestamp = Math.round(Date.now() / 1000);
const randomID = `${timestamp}-${revisedRandId()}`;
const pdfOptions = {
path: `static/exports/${randomID}.pdf`,
format: 'A4',
margin: {
top: 0,
right: 0,
bottom: 0,
left: 0
}
};
const availableOptions = ['scale', 'displayHeaderFooter', 'headerTemplate', 'footerTemplate', 'printBackground', 'landscape',
'pageRanges', 'format', 'width', 'height', 'margin.top', 'right', 'margin.bottom', 'margin.left', 'preferCSSPageSize'];
const integerOptions = ['scale', 'width', 'height'];
for (const option of availableOptions) {
if (req.body[option] && !option.includes('margin')) {
if (integerOptions.indexOf(option) > -1) {
pdfOptions[option] = Number(req.body[option]);
} else {
pdfOptions[option] = req.body[option];
}
}
module.exports = async function (req, res) {
const errors = validationResult(req);
if (!errors.isEmpty()) {
return res.status(422).json({
success: true,
errors: errors.errors,
});
}

if (req.body[option] && option.includes('margin')) {
pdfOptions.margin[option.replace('margin.', '')] = req.body[option];
}
const timestamp = Math.round(Date.now() / 1000);
const randomID = `${timestamp}-${revisedRandId()}`;
const pdfOptions = {
path: `static/exports/${randomID}.pdf`,
format: 'A4',
margin: {
top: 0,
right: 0,
bottom: 0,
left: 0,
},
};
const availableOptions = ['scale', 'displayHeaderFooter', 'headerTemplate', 'footerTemplate', 'printBackground', 'landscape', 'pageRanges', 'format', 'width', 'height', 'margin.top', 'margin.right', 'margin.bottom', 'margin.left', 'preferCSSPageSize'];
const integerOptions = ['scale', 'width', 'height'];
for (const option of availableOptions) {
if (req.body[option] && !option.includes('margin')) {
if (integerOptions.indexOf(option) > -1) {
pdfOptions[option] = Number(req.body[option]);
} else {
pdfOptions[option] = req.body[option];
}
}

if (!global.browser) {
global.browser = await puppeteer.launch({ args: ['--no-sandbox'] })
if (req.body[option] && option.includes('margin')) {
pdfOptions.margin[option.replace('margin.', '')] = req.body[option];
}
const page = await global.browser.newPage();
if (req.body.url) {
await page.goto(req.body.url);
} else {
await page.setContent(req.body.html);
}
await page.pdf(pdfOptions);
}

await page.close();
if (!global.browser) {
global.browser = await puppeteer.launch({ args: ['--no-sandbox'] });
}
const page = await global.browser.newPage();
if (req.body.url) {
await page.goto(req.body.url);
} else {
await page.setContent(req.body.html);
}
await page.pdf(pdfOptions);

return res.status(200).json({
success: true,
url: `${baseURL}/exports/${randomID}.pdf`,
path: `/exports/${randomID}.pdf`,
expires: timestamp + expiresIn
});
}
await page.close();

return res.download(`static/exports/${randomID}.pdf`);
};

function revisedRandId() {
return Math.random().toString(36).replace(/[^a-z]+/g, '').substr(2, 10);
}
return Math.random()
.toString(36)
.replace(/[^a-z]+/g, '')
.substr(2, 10);
}
89 changes: 89 additions & 0 deletions handlers/generateUnified.js
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Original file line number Diff line number Diff line change
@@ -0,0 +1,89 @@
const { validationResult } = require('express-validator');
const puppeteer = require('puppeteer');
const config = require('../config');
const baseURL = config('BASE_URL');
const expiresIn = config('EXPIRES_IN');
const PDFMerger = require('pdf-merger-js');

module.exports = async function (req, res) {
const errors = validationResult(req);
if (!errors.isEmpty()) {
return res.status(422).json({
success: true,
errors: errors.errors,
});
}

const timestamp = Math.round(Date.now() / 1000);

const files = [];

const mergedFileId = `${timestamp}-merged-${revisedRandId()}`;

req.body.base64Htmls.forEach((htmlElement) => {});

for (const index in req.body.base64Htmls) {
const htmlElement = req.body.base64Htmls[index];

const randomID = `${timestamp}-${revisedRandId()}`;
const pdfOptions = {
path: `static/exports/${randomID}.pdf`,
format: 'A4',
margin: {
top: 0,
right: 0,
bottom: 0,
left: 0,
},
};

const availableOptions = ['scale', 'displayHeaderFooter', 'headerTemplate', 'footerTemplate', 'printBackground', 'landscape', 'pageRanges', 'format', 'width', 'height', 'margin.top', 'margin.right', 'margin.bottom', 'margin.left', 'preferCSSPageSize'];
const integerOptions = ['scale', 'width', 'height'];
for (const option of availableOptions) {
if (req.body[option] && !option.includes('margin')) {
if (integerOptions.indexOf(option) > -1) {
pdfOptions[option] = Number(req.body[option]);
} else {
pdfOptions[option] = req.body[option];
}
}

if (req.body[option] && option.includes('margin')) {
pdfOptions.margin[option.replace('margin.', '')] = req.body[option];
}
}

if (!global.browser) {
global.browser = await puppeteer.launch({ args: ['--no-sandbox'] });
}
const page = await global.browser.newPage();

const dec = Buffer(htmlElement, 'base64').toString('UTF8');
await page.setContent(dec);

await page.pdf(pdfOptions);

await page.close();

files.push(randomID);
}

const merger = new PDFMerger();

await (async () => {
files.forEach((id) => {
merger.add('static/exports/' + id + '.pdf');
});

await merger.save('static/exports/' + mergedFileId + '.pdf'); //save under given name and reset the internal document
})();

return res.download(`static/exports/${mergedFileId}.pdf`);
};

function revisedRandId() {
return Math.random()
.toString(36)
.replace(/[^a-z]+/g, '')
.substr(2, 10);
}
2 changes: 1 addition & 1 deletion index.js
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Original file line number Diff line number Diff line change
Expand Up @@ -22,7 +22,7 @@ const speedLimiter = slowDown({
delayMs: config('RATE_LIMIT_DELAY_MS')
});

app.use(bodyParser.json());
app.use(bodyParser.json({ limit: '50mb' }));
app.use(bodyParser.urlencoded({ extended: true }));
app.use(upload.array());
app.use(express.static('static'))
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1 change: 1 addition & 0 deletions package.json
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Original file line number Diff line number Diff line change
Expand Up @@ -15,6 +15,7 @@
"express-slow-down": "^1.3.1",
"express-validator": "^6.1.1",
"multer": "^1.4.2",
"pdf-merger-js": "^3.4.0",
"puppeteer": "^1.19.0"
},
"engines": {
Expand Down
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