/**
 * test one single page, make a screenshot and log errors to 
 * console
 * (c) 2019 - Leibniz-Insitut für Wissensmedien
 * 
 */
const puppeteer = require('puppeteer');
const fs = require("fs")
const path = require("path")
const start_dir = process.cwd()


// const start_file = path.join(start_dir,"lib","frames.html")
const start_file = path.join(start_dir,"lib","pixi","badge.html")

function sleep(ms) {
    return new Promise(resolve => setTimeout(resolve, ms));
  }

const events = ["error","pageerror"]
function logPageEvent(event){
    if(event !== undefined){
         console.log(event.message)
    }
}

async function makeScreenshot(href){
    
    const browser = await puppeteer.launch({
        // headless: false,
        // loglevel : 0,
        args : [
        '–allow-file-access-from-files',
      ],});
    const page = await browser.newPage();
    
    await page.setViewport({width: 1024,height : 624})
    for (var i = 0; i < events.length; i++) {
        page.on(events[i],logPageEvent)
    }
    page.once("load",logPageEvent)

    // await Promise.all([ page.coverage.startJSCoverage() ]);
    await page.goto(href)
    // const jsCoverage = await Promise.all([ page.coverage.stopJSCoverage() ]);

    const fname = path.parse(href).name

    if (fname != "index"){
        image_url = href.replace(fname + ".html" ,"thumbnails/" + fname + ".png")
    }
    else{
        image_url = href.replace(fname + ".html" ,"thumbnail.png")
    }
    image_url = image_url.replace("file:///","")
    console.log(image_url)
    // console.log(jsCoverage)
    
    page.removeAllListeners()
    
    await page.screenshot({path: image_url});
    await browser.close();
}


(async function(){

        await makeScreenshot(start_file)
    }
)()