const puppeteer = require('puppeteer');
const fs = require('fs');
const path = require('path');

/**
 * Scrapes morethanadiagnosis.org to extract page content and structure
 */
async function scrapeWebsite() {
  let browser;
  try {
    console.log('🚀 Starting Puppeteer scraper...');

    // Launch browser
    browser = await puppeteer.launch({
      headless: 'new',
      args: ['--no-sandbox', '--disable-setuid-sandbox']
    });

    const page = await browser.newPage();

    // Set user agent to avoid detection
    await page.setUserAgent('Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36');

    // Set viewport
    await page.setViewport({ width: 1920, height: 1080 });

    console.log('📄 Loading morethanadiagnosis.org...');

    // Navigate to the site with longer timeout
    await page.goto('https://morethanadiagnosis.org', {
      waitUntil: 'networkidle2',
      timeout: 60000
    });

    console.log('⏳ Waiting for JavaScript to render...');

    // Wait for Wix to fully load
    await new Promise(resolve => setTimeout(resolve, 3000));

    console.log('📸 Extracting content...');

    // Extract all visible text
    const content = await page.evaluate(() => {
      const data = {
        title: document.title,
        url: window.location.href,
        headings: [],
        paragraphs: [],
        buttons: [],
        links: [],
        images: [],
        fullText: document.body.innerText,
        sections: []
      };

      // Extract headings
      document.querySelectorAll('h1, h2, h3, h4, h5, h6').forEach(el => {
        const text = el.textContent.trim();
        if (text) {
          data.headings.push({
            level: el.tagName,
            text: text
          });
        }
      });

      // Extract paragraphs
      document.querySelectorAll('p').forEach(el => {
        const text = el.textContent.trim();
        if (text && text.length > 20) {
          data.paragraphs.push(text);
        }
      });

      // Extract buttons and CTAs
      document.querySelectorAll('button, a[role="button"], [class*="btn"], [class*="button"]').forEach(el => {
        const text = el.textContent.trim();
        if (text) {
          data.buttons.push({
            text: text,
            href: el.href || '',
            class: el.className
          });
        }
      });

      // Extract links
      document.querySelectorAll('a[href]').forEach(el => {
        const text = el.textContent.trim();
        const href = el.href;
        if (text && !href.includes('javascript:') && text.length < 100) {
          data.links.push({
            text: text,
            href: href
          });
        }
      });

      // Extract images
      document.querySelectorAll('img[src]').forEach(el => {
        data.images.push({
          src: el.src,
          alt: el.alt,
          title: el.title
        });
      });

      // Extract major sections
      document.querySelectorAll('section, [class*="section"], main, [role="main"]').forEach(el => {
        const heading = el.querySelector('h1, h2, h3');
        if (heading) {
          data.sections.push({
            heading: heading.textContent.trim(),
            content: el.textContent.trim().substring(0, 500)
          });
        }
      });

      return data;
    });

    console.log('💾 Saving extracted content...');

    // Save to file
    const outputPath = '/srv/containers/mtad-api/website_content.json';
    fs.writeFileSync(outputPath, JSON.stringify(content, null, 2));

    console.log(`\n✅ Scraping complete!\n`);
    console.log(`📊 Content Summary:`);
    console.log(`   - Headings: ${content.headings.length}`);
    console.log(`   - Paragraphs: ${content.paragraphs.length}`);
    console.log(`   - Buttons/CTAs: ${content.buttons.length}`);
    console.log(`   - Links: ${content.links.length}`);
    console.log(`   - Images: ${content.images.length}`);
    console.log(`   - Sections: ${content.sections.length}`);
    console.log(`\n💾 Full content saved to: ${outputPath}`);

    // Print preview
    console.log(`\n🔍 Preview (first 2000 chars):\n`);
    console.log(content.fullText.substring(0, 2000));
    console.log(`\n...\n`);

    // Print navigation if found
    if (content.links.length > 0) {
      console.log(`📍 Navigation Links Found:`);
      content.links
        .filter(l => !l.href.includes('#') && l.text.length < 50)
        .slice(0, 10)
        .forEach(l => {
          console.log(`   - ${l.text}: ${l.href}`);
        });
    }

  } catch (error) {
    console.error('❌ Scraping failed:', error.message);
    process.exit(1);
  } finally {
    if (browser) {
      await browser.close();
      console.log('\n🔒 Browser closed.');
    }
  }
}

// Run the scraper
scrapeWebsite();