import { chromium } from 'playwright';
import path from 'path';
import fs from 'fs';

const URL_BROWSER = 'ws://localhost:9222/devtools/browser/716e665f-22f3-4c81-b68d-71f7ab9d72f6'

const USERNAME = 'protest'
const MDP = 'Avalanche1'

const URL_FORUMS = "https://www.avalancheassociation.ca/forums/"
const PATH_ENTREE = 'Topics.aspx?forum=173521&group=135525'

const SEPARATEUR_POST = "<br> <hr> <br>"


function getRandomDelay(min = 1000, max = 3000) {
  return Math.floor(Math.random() * (max - min + 1)) + min;
}

async function login(page) {
  await page.goto('https://www.avalancheassociation.ca/');

    await page.waitForTimeout(getRandomDelay());
    await page.getByPlaceholder('Username').fill(USERNAME);
    await page.waitForTimeout(getRandomDelay());
    await page.getByPlaceholder('Password').fill(MDP);

    await page.waitForTimeout(getRandomDelay());
    await Promise.all([
      page.click('input[name="btn_submitLogin"]'),
      page.waitForNavigation({ waitUntil: 'networkidle0' }),
    ]);
}

async function genererPDF(page) {
  let cleanHTML = "";
  const titreThread = await getPageTitle(page)
  const urlData = 'data/forums/' + titreThread
  
  console.log(titreThread)
  await downloadAttachedDocuments(page, urlData)

  do {
    const postsLocator = await page.locator('.FormTable1')
    const count = await postsLocator.count();

    for(let i = 0; i < count; i++) {
      const post = postsLocator.nth(i);

      await post.evaluate(p => {
        const sectionInutiles = p.querySelectorAll('td[id*="tdButtonBar"], div.forumPosterPostCount');
        if (sectionInutiles) {
          sectionInutiles.forEach(s => s.remove());
        }
      });

      const html = await post.innerHTML()
      cleanHTML += html?.split('<br>')
      .map(line => line.trim())
      .filter(line => line !== '')
      .join('<br>');  

      cleanHTML += SEPARATEUR_POST

    }
  }
  while(await goToNextPage(page))

  const pdfPage = await page.context().newPage();
  await pdfPage.setContent(cleanHTML);
  await pdfPage.pdf({ path: urlData + '/' + titreThread + '.pdf', format: 'A4' });
  await pdfPage.close()
}

async function goToNextPage(page) {
  await page.waitForTimeout(getRandomDelay());
  const nextPage = await page.$('#ctl00_PageContent_fnb_PostPager_pnlNextPage');


  if (nextPage !== null) {
     await Promise.all([
      page.waitForNavigation({ waitUntil: 'load' }),
      nextPage.click()
    ]);
    return true
  }
  else {
    return false
  }
}

async function getPageTitle(page) {
  const titre = await page.$('#ctl00_PageContent_PageSummaryTitle');
  if (titre !== null) 
    return titre.textContent()
}


async function downloadAttachedDocuments(page, urlDownloadFolder) {
  const attachmentDivs = await page.locator('div[id*="pnlAttachments"]').all();
console.log('DL path: ', urlDownloadFolder )
  if (!fs.existsSync(urlDownloadFolder)) {
    fs.mkdirSync(urlDownloadFolder);
  }

  for (let i = 0; i < attachmentDivs.length; i++) {
    const div = attachmentDivs[i];
    
    // Get all links within the div
    const links = await div.locator('a').all();
    
    for (let j = 0; j < links.length; j++) {
      const link = links[j];
      const hrefAttachement = await link.getAttribute('href');
      const fileName = await link.textContent();
      
      if (hrefAttachement) {
        const downloadPromise = page.waitForEvent('download');
        
        await link.click({ modifiers: ['Alt'] });
        const download = await downloadPromise;
        
        const downloadPath = path.join(urlDownloadFolder, fileName);
        await download.saveAs(downloadPath);
        console.log(`Downloaded PDF: ${downloadPath}`);
      }
    }
    
  }
}


const browser = await chromium.connectOverCDP(URL_BROWSER);
const contexts = browser.contexts();

if (contexts.length > 0) {
  const pages = await contexts[0].pages();   
  
  if (pages.length > 0) {
    let page = pages[0]
    
    await login(page)
    await page.goto(URL_FORUMS + PATH_ENTREE)
    await goToNextPage(page) //TODO remove

    //POUR CHAQUE PAGES 
    do {
      const liensThreads = await page.locator('a[href*="Posts.aspx?topic="]')
      const count = await liensThreads.count();

      //POUR CHAQUE THREADS 
      for (let i = 0; i < count; i++) {
        if (i % 2 !== 0) continue //Filtre le lien vers la dernière page
        const href = await liensThreads.nth(i).getAttribute('href');
        const newTab = await page.context().newPage()
        
        await newTab.waitForTimeout(getRandomDelay());
        await newTab.goto(URL_FORUMS + href)
        await genererPDF(newTab)
        
        await newTab.waitForTimeout(getRandomDelay());
        await newTab.close()
      }
    }
    while(await goToNextPage(page))
  } else {
    console.log('No pages found in the context');
  }
} else {
  console.log('No contexts available');
}