/**
 * This script scrapes a website for table data using Puppeteer and Cheerio.
 * It specifically looks for tables with headers "Date", "Venue", and "Location",
 * and extracts the data from these tables.
 *
 * The script performs the following steps:
 * 1. Launches a Puppeteer browser instance.
 * 2. Sets the user agent and viewport to mimic a real browser.
 * 3. Navigates to the specified URL.
 * 4. Simulates human-like interactions (mouse movements and delays).
 * 5. Extracts the HTML content of the page.
 * 6. Loads the HTML content into Cheerio for parsing.
 * 7. Finds all table elements and checks if they contain the headers "Date", "Venue", and "Location".
 * 8. Extracts the data from the matching tables and returns it.
 *
 * @param {string} url - The URL of the website to scrape.
 * @returns {Promise<Array<Object>>} - A promise that resolves to an array of objects containing the scraped data.
 *
 * Example usage:
 * const url = 'https://www.pokemon.com/us/play-pokemon/pokemon-events/championship-series/2025/regional-special-championships';
 * scrapeWebsite(url)
 *   .then(data => console.log(data))
 *   .catch(error => console.error(error));
 *
 * Required npm packages:
 * - puppeteer: ^10.0.0
 * - cheerio: ^1.0.0-rc.10
 *
 * Currently not working due to recaptch on P!P site
 */
const puppeteer = require('puppeteer');
const cheerio = require('cheerio');

async function scrapeWebsite(url) {
  // Launch Puppeteer
  const browser = await puppeteer.launch({
    headless: false, // Run in headless mode
    args: [
      '--no-sandbox',
      '--disable-setuid-sandbox',
      '--disable-dev-shm-usage',
      '--disable-accelerated-2d-canvas',
      '--disable-gpu',
      '--window-size=1920x1080'
    ]
  });
  const page = await browser.newPage();
  // Set user agent to mimic a real browser
  await page.setUserAgent(
    'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.36'
  );

  // Set viewport to mimic a real browser
  await page.setViewport({ width: 1920, height: 1080 });

  // Navigate to the URL
  await page.goto(url, { waitUntil: 'networkidle2' });

  // Simulate human-like interactions
  await page.waitForTimeout(2000); // Wait for 2 seconds
  await page.mouse.move(100, 100); // Move mouse to a specific position
  await page.mouse.move(200, 200, { steps: 10 }); // Move mouse with steps
  await page.waitForTimeout(1000); // Wait for 1 second

  // Get the HTML content
  const content = await page.content();
  await browser.close();

  // Load the HTML content into Cheerio
  const $ = cheerio.load(content);

  // Find all table elements
  const tables = $('table');
  const data = [];

  // Loop through each table
  tables.each((index, table) => {
    const headers = [];
    const rows = $(table).find('tr');

    // Check if the first row contains the headers Date, Venue, and Location
    const firstRow = rows.first();
    firstRow.find('tr').each((i, th) => {
      headers.push($(th).text().trim().toLowerCase());
    });

    if (
      headers.includes('date') &&
      headers.includes('venue') &&
      headers.includes('location')
    ) {
      // Loop through the remaining rows and extract data
      rows.slice(1).each((i, row) => {
        const cells = $(row).find('td');
        const rowData = {};

        cells.each((j, cell) => {
          const header = headers[j];
          const cellText = $(cell).text().trim();

          if (header === 'date') {
            const dates = cellText.split(' - ');
            rowData.startDate = dates[0];
            rowData.endDate = dates[1] || dates[0];
          } else if (header === 'venue') {
            rowData.venue = cellText;
          } else if (header === 'location') {
            rowData.location = cellText;
          }
        });

        data.push(rowData);
      });
    }
  });

  return data;
}

// Example usage
const url =
  'https://www.pokemon.com/us/play-pokemon/pokemon-events/championship-series/2025/regional-special-championships';
scrapeWebsite(url)
  .then(data => console.log(data))
  .catch(error => console.error(error));