const puppeteer = require("puppeteer-core");
const process = require("process");

const cookie = "";

const options = {
    executablePath: "/Applications/Google\ Chrome.app/Contents/MacOS/Google\ Chrome",
    defaultViewport: { width: 1280, height: 800 },
    deviceScaleFactor: 1,
    isLandscape: true,
    headless: false,
    devtools: true
}

var browser;
var page;
var steps = [];
var response = [];
var index = 0;

var profile = "";
var linkedin = {};

steps = [

    // Open LinkedIn profile
    async function loadLinkedInProfile() {
        browser = await puppeteer.launch(options);
        page = await browser.newPage();
        const userAgent = "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/77.0.3865.35 Safari/537.36";
        await page.setUserAgent(userAgent);
        await page.setCookie({
            "name": "li_at",
            "value": cookie,
            "domain": ".www.linkedin.com"
        });
        await page.goto(profile);
        await page.on('console', async function(message) { console.log('PAGE LOG:', message.text()) });
        return;
    },

    // Scroll to the bottom
    async function autoScroll() {
        await page.evaluate(async function() {
            await new Promise(async function(resolve, reject) {
                var totalHeight = 0;
                var distance = 500;
                var timer = setInterval(async function() {
                    var scrollHeight = document.body.scrollHeight;
                    window.scrollBy(0, distance);
                    totalHeight += distance;
                    if (totalHeight >= scrollHeight) {
                        clearInterval(timer);
                        resolve();
                        return;
                    }
                }, 100);
            });
        });
    },

    // Click "See More" button in experience section
    async function seeMoreButton() {
        await page.evaluate(async function() {
            await new Promise(async function(resolve, reject) {
                var timer = setInterval(async function() {
                    var section = document.querySelector(".pv-experience-section__see-more");
                    if (!section) {
                        resolve();
                        return;
                    }
                    var button = section.querySelector(".pv-profile-section__see-more-inline");
                    if (button) {
                        button.click();
                        button.blur();
                    } else {
                        clearInterval(timer);
                        resolve();
                        return;
                    }
            }, 1000);
            });
        });
    },

    // Click "Show More" button in skills & endorsements section
    async function showMoreButton() {
        await page.evaluate(async function() {
            await new Promise(async function(resolve, reject) {
                var button = document.querySelector(".pv-skills-section__additional-skills");
                if (button) {
                    button.click();
                    button.blur();
                }
                resolve();
                return;
            });
        });
    },

    // Click "Given" tab in recommendations section
    async function givenTab() {
        await page.evaluate(async function() {
            await new Promise(async function(resolve, reject) {
                var tabs = document.querySelectorAll("artdeco-tab[role=\"tab\"]");
                for (const tab of tabs) {
                    var title = tab.textContent;
                    if (title.toLowerCase().includes("given")) {
                        tab.click();
                    }
                }
                resolve();
                return;
            });
        });
    },

    // Click "See More" button in all sections
    async function seeMoreButtons() {
        await page.evaluate(async function() {
            await new Promise(async function(resolve, reject) {
                var buttons = document.querySelectorAll(".lt-line-clamp__more");
                for (const button of buttons) {
                    button.click();
                    button.blur();
                }
                resolve();
                return;
            });
        });
        page.screenshot({ path: "example.png", type: "png", fullPage: true });
    }
]

// Implement all functions in steps array
async function executeStepsOneByOne() {
    if (typeof steps[index] == "function") {
        await steps[index]();
        index += 1;
        await executeStepsOneByOne();
    }
}

if (process.argv == 1) {
    console.log("Format: node scrape.js URL");
    console.log("Error: You must provide a LinkedIn profile URL.");
} else {
    profile = process.argv[process.argv.length - 1];
    executeStepsOneByOne();
}