#!/usr/bin/env node
const puppeteer = require('puppeteer');
const aChecker = require("accessibility-checker");
const uuid = require("uuid");

async function scrapeLinks(url) {
    const browser = await puppeteer.launch();
    const page = await browser.newPage();
    await page.goto(url, { 'timeout': 30 * 1000, 'waitUntil': 'load' });
    const all_hrefs = await page.evaluate(() => Array.from(document.querySelectorAll('a[href]')).map(x => x.href));
    const links_mess = all_hrefs.filter(x => x.startsWith('https://') || x.startsWith('http://')).map(x => x.split('#')[0]);
    const links = Array.from(new Set(links_mess)).sort();
    const element_count = await page.evaluate(() => document.querySelectorAll('*').length);
    const uid = uuid.v4();
    const compliance = await aChecker.getCompliance(page, uid);
    const results = compliance.report.results;
    await browser.close();
    return {
        element_count,
        links,
        results,
    };
}

async function main() {
    if (process.argv.length != 3) {
        throw new Error('Requires exactly one argument');
    }
    console.log(JSON.stringify(await scrapeLinks(process.argv[2])));
}

main();