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scrape-employee-data.js
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scrape-employee-data.js
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/*
LinkedIn Scrapers: "Scrape Employee Data"
Copyright 2020, Darren Smith
Run as: "node scrape-employee-data.js [InputFile] [OutputFile]" to scrape
Or as: "node scrape-employee-data.js" to create a new login session
*/
// Setup:
const puppeteer = require('puppeteer'), cheerio = require('cheerio');
const args = process.argv, fs = require("fs"), fsp = require("fs").promises;
var inputFile, outputFile, input, output = [];
inputFile = args[2], outputFile = args[3];
// Main:
async function main() {
const browser = await puppeteer.launch({headless: false});
const page = await browser.newPage();
await page.setViewport({width: 1200, height: 720});
try { var cookieFileExists = await fsp.stat('./cookies.json', {}); }
catch(err) { var cookieFileExists = false; }
if(cookieFileExists){
const cookiesString = await fsp.readFile('./cookies.json');
var cookies = JSON.parse(cookiesString);
await page.setCookie(...cookies);
}
if(outputFile && cookieFileExists) {
for (var i = 0; i < input.length; i++) {
if(input[i][1]) {
await page.goto('https://www.linkedin.com' + input[i][1]);
await page.waitFor(500);
try { await page.click('a.lt-line-clamp__more'); } catch(err) { null; }
var selector = 'button.link';
await page.waitForSelector(selector);
await autoScroll(page);
await page.evaluate((Selector) => {
const allButtons = document.querySelectorAll(Selector);
for (let i = 0; i < allButtons.length; i++) {
allButtons[i].click();
}
}, selector);
await page.evaluate(() => {
const skillsButton = document.querySelectorAll('button.pv-skills-section__additional-skills');
skillsButton[0].click();
});
selector = 'a.lt-line-clamp__more';
await page.waitForSelector(selector);
await page.evaluate((Selector) => {
const allButtons = document.querySelectorAll(Selector);
for (let i = 0; i < allButtons.length; i++) {
allButtons[i].click();
}
}, selector);
const content = await page.content();
let $ = cheerio.load(content);
var profile = {};
// Get Basic Profile Information:
profile.name = $("div.mr5>ul>li.t-24").text().replace(/[\t\n\r]/gm,' ').trim();
profile.degree = $("div.mr5>ul.align-items-center>li.t-16>span>span.dist-value").text().replace(/[\t\n\r]/gm,' ').trim();
profile.tagline = $("div.mr5>h2").text().replace(/[\t\n\r]/gm,' ').trim();
profile.location = $("div.mr5>ul.mt1>li").first().text().replace(/[\t\n\r]/gm,' ').trim();
profile.connections = $("div.mr5>ul.mt1>li:nth-child(2)>span").text().replace(/[\t\n\r]/gm,' ').trim();
try {
profile.about = await $("p.pv-about__summary-text>span").text().replace(/[\t\n\r]/gm,' ').trim();
profile.about = profile.about.replace("see more", "").trim();
} catch(err) { null; }
profile.experience = [], profile.education = [];
profile.skills = [], profile.recommendations = {};
profile.recommendations.received = [], profile.recommendations.given = [];
// Fill Experience Section:
try {
await $("#experience-section > ul > li").each(async function( index ) {
var exp = {};
if(!$(this).children("section").children("ul").text()) {
exp.company = $(this).children("section").children("div").children("div").children("a").children("div.pv-entity__summary-info").children("p.pv-entity__secondary-title").text().replace(/[\t\n\r]/gm,' ').trim();
exp.company = exp.company.replace("Full-time", "").trim();
exp.company = exp.company.replace("Contract", "").trim();
exp.company = exp.company.replace("Part-time", "").trim();
exp.positions = [];
var position = {};
position.title = $(this).children("section").children("div").children("div").children("a").children("div.pv-entity__summary-info").children("h3").text().replace(/[\t\n\r]/gm,' ').trim();
position.datesEmployed = $(this).children("section").children("div").children("div").children("a").children("div.pv-entity__summary-info").children("div.display-flex").children("h4").first().children("span").last().text().replace(/[\t\n\r]/gm,' ').trim();
position.employmentDuration = $(this).children("section").children("div").children("div").children("a").children("div.pv-entity__summary-info").children("div.display-flex").children("h4").last().children("span").last().text().replace(/[\t\n\r]/gm,' ').trim();
position.about = $(this).children("section").children("div").children("div").children("div").children("p").text().replace(/[\t\n\r]/gm,' ').trim();
position.about = position.about.replace("…", "").replace("see more", "").trim();
exp.positions.push(position);
} else {
exp.company = $(this).children("section").children("div").children("a").children("div").children("div.pv-entity__company-summary-info").children("h3").children("span").last().text().replace(/[\t\n\r]/gm,' ').trim();
exp.company = exp.company.replace("Full-time", "").trim();
exp.company = exp.company.replace("Contract", "").trim();
exp.company = exp.company.replace("Part-time", "").trim();
exp.duration = $(this).children("section").children("div").children("a").children("div").children("div.pv-entity__company-summary-info").children("h4").children("span").last().text().replace(/[\t\n\r]/gm,' ').trim();
exp.positions = [];
await $(this).children("section").children("ul").children("li").each(async function( indexB ) {
var position = {};
var nested = $(this).children("div").children("div").children("div").children("div").children("div").children("div");
position.title = nested.children("h3").children("span").last().text().replace(/[\t\n\r]/gm,' ').trim();
position.datesEmployed = nested.children("div").children("h4").first().children("span").last().text().replace(/[\t\n\r]/gm,' ').trim();
position.employmentDuration = nested.children("div").children("h4").last().children("span").last().text().replace(/[\t\n\r]/gm,'' ).trim();
position.about = nested.children("p").text().replace(/[\t\n\r]/gm,' ').trim();
position.about = position.about.replace("…", "").replace("see more", "").trim();
exp.positions.push(position);
});
}
profile.experience.push(exp);
});
} catch(err) { null; }
// Fill Education Section:
try {
await $("#education-section > ul > li").each(async function( index ) {
var edu = {};
edu.institution = $(this).children("div").children("div").children("a").children("div.pv-entity__summary-info").children("div.pv-entity__degree-info").children("h3").text().replace(/[\t\n\r]/gm,' ').trim();
edu.degreeName = $(this).children("div").children("div").children("a").children("div.pv-entity__summary-info").children("div.pv-entity__degree-info").children("p.pv-entity__degree-name").children("span").last().text().replace(/[\t\n\r]/gm,' ').trim();
edu.fieldOfStudy = $(this).children("div").children("div").children("a").children("div.pv-entity__summary-info").children("div.pv-entity__degree-info").children("p.pv-entity__fos").children("span").last().text().replace(/[\t\n\r]/gm,' ').trim();
edu.startYear = $(this).children("div").children("div").children("a").children("div.pv-entity__summary-info").children("p.pv-entity__dates").children("span").last().children("time").first().text().replace(/[\t\n\r]/gm,' ').trim();
edu.endYear = $(this).children("div").children("div").children("a").children("div.pv-entity__summary-info").children("p.pv-entity__dates").children("span").last().children("time").last().text().replace(/[\t\n\r]/gm,' ').trim();
profile.education.push(edu);
});
} catch(err) { null; }
// Fill Top Skills Section:
try {
await $("section.pv-skill-categories-section > ol > li").each(async function( index ) {
var skill = {};
skill.skill = $(this).children("div").children("div").children("p").children("a").children("span").text().replace(/[\t\n\r]/gm,' ').trim();
skill.endorsements = $(this).children("div").children("div").children("a").children("span").last().text().replace(/[\t\n\r]/gm,' ').trim();
profile.skills.push(skill);
});
} catch(err) { null; }
// Fill Bottom Skills Sections:
try {
await $("section.pv-skill-categories-section > div > div").each(async function( index ) {
await $(this).children("ol").children("li").each(async function( indexB ) {
var skill = {};
skill.skill = $(this).children("div").children("div").children("p").children("a").children("span").text().replace(/[\t\n\r]/gm,' ').trim();
skill.endorsements = $(this).children("div").children("div").children("a").children("span").last().text().replace(/[\t\n\r]/gm,' ').trim();
if(skill.skill) { profile.skills.push(skill); }
});
});
} catch(err) { null; }
// Fill Recommendations Section:
try {
await $("section.pv-recommendations-section > div > div > div.active > div > div > ul > li").each(async function( index ) {
var rec = {};
rec.highlights = "";
rec.name = $(this).children("div.pv-recommendation-entity__header").children("a").children("div").children("h3").text().replace(/[\t\n\r]/gm,' ').trim();
rec.title = $(this).children("div.pv-recommendation-entity__header").children("a").children("div").children("p").first().text().replace(/[\t\n\r]/gm,' ').trim();
rec.relation = $(this).children("div.pv-recommendation-entity__header").children("a").children("div").children("p").last().text().replace(/[\t\n\r]/gm,' ').trim();
$(this).children("div.pv-recommendation-entity__highlights").children("blockquote").children("div").children("span").each(async function( indexB ) {
if(!$(this).text().includes("See more")) {
rec.highlights += $(this).text().replace(/[\t\n\r]/gm,' ').replace("See less", "").trim() + " ";
}
});
await profile.recommendations.received.push(rec);
});
} catch(err) { null; }
}
output.push(profile);
}
await fsp.writeFile('./' + outputFile, JSON.stringify(output, null, 2));
await browser.close();
} else {
await page.goto('https://www.linkedin.com/login');
await page.waitFor(120000);
cookies = await page.cookies();
await fsp.writeFile('./cookies.json', JSON.stringify(cookies, null, 2));
}
}
// Auto-Scroll:
async function autoScroll(page){
await page.evaluate(async () => {
await new Promise((resolve, reject) => {
var totalHeight = 0;
var distance = 100;
var timer = setInterval(() => {
var scrollHeight = document.body.scrollHeight;
window.scrollBy(0, distance);
totalHeight += distance;
if(totalHeight >= scrollHeight){
clearInterval(timer);
resolve();
}
}, 100);
});
});
}
// CSV Parser:
function parseCsv(inputString, options, cb) {
try {
if(!inputString || !(typeof inputString === 'string' || inputString instanceof String)){ var error = { message: "Input string not provided or not in string format" }; if(cb){ cb(error, null) }; return; }
if(!cb || !(typeof(cb) === 'function')){ return; }
if(!options || !options.delimiter){ var delimiter = ","; }
else if (options.delimiter) { var delimiter = options.delimiter; }
else { var delimiter = ","; }
var lines = inputString.split("\n");
for (var i = 0; i < lines.length; i++) { lines[i] = lines[i].split(delimiter); }
var output = { success: true, message: "CSV String Parsed And Output Returned", output: lines }
cb(null, output);
return;
} catch (err) { if(cb) { cb(err, null); }; return; }
};
// Load Input CSV, Parse and Call Main
if(inputFile) {
fs.readFile(inputFile, 'utf8', function (err, data) {
if (err) { return console.log(err); }
parseCsv(data, {}, function(err, out) {
if(err) { console.log("Error loading input file"); return; }
else { input = out.output; }
main();
});
});
} else {
main();
}