// Fix rewriteArticle - call correct endpoint
// This file patches the rewriteArticle function to use /api/rewrite_slide instead of /api/rewrite_share

(function(){
  // Override rewriteArticle to call /api/rewrite_slide  
  const origRewrite = window.rewriteArticle;
  window.rewriteArticle = async function(){
    const url = _currentArticle?.url;
    if(!url) return;
    toast('⏳ Đang tạo slide tóm tắt...');
    try {
      const r = await fetch('/api/rewrite_slide', {
        method: 'POST',
        headers: {'Content-Type': 'application/json'},
        body: JSON.stringify({url, context: document.querySelector('.article-view')?.innerText?.slice(0,14000) || ''})
      });
      const j = await r.json();
      if (!r.ok || j.error) throw new Error(j.error);
      toast('✅ Đã đăng Tường AI!');
      if (j.post) prependWallPost(j.post);
      // Navigate to the new post on Tường AI (home). Slide overlay (if any) stays on top.
      if (j.post && typeof goToWallPost === 'function') goToWallPost(j.post.id);
      // Show slides preview
      if (j.slides && j.slides.length) {
        showSlidePreview(j.slides, j.post?.title || '');
      }
    } catch(e) {
      // Fallback: try /api/rewrite_share (old endpoint from ai_ext)
      try {
        const r2 = await fetch('/api/rewrite_share', {
          method: 'POST',
          headers: {'Content-Type': 'application/json'},
          body: JSON.stringify({url, context: document.querySelector('.article-view')?.innerText?.slice(0,14000) || ''})
        });
        const j2 = await r2.json();
        if (r2.ok && !j2.error) {
          toast('✅ Đã đăng Tường AI!');
          if (j2.post) prependWallPost(j2.post);
          if (j2.post && typeof goToWallPost === 'function') goToWallPost(j2.post.id);
          return;
        }
      } catch(e2) {}
      toast('❌ ' + e.message);
    }
  };

  // Show slides as fullscreen overlay
  window.showSlidePreview = function(slides, title) {
    if (!slides || !slides.length) return;
    const overlay = document.createElement('div');
    overlay.id = 'slide-preview';
    overlay.style.cssText = 'position:fixed;inset:0;background:#000;z-index:99999;display:flex;flex-direction:column;overflow:hidden';
    
    let currentSlide = 0;
    function renderSlide(idx) {
      const s = slides[idx];
      overlay.innerHTML = `
        <div style="position:absolute;top:10px;left:10px;right:10px;display:flex;justify-content:space-between;align-items:center;z-index:2">
          <button onclick="document.getElementById('slide-preview').remove()" style="background:rgba(0,0,0,.6);border:0;color:#fff;padding:8px 14px;border-radius:20px;font-size:12px;cursor:pointer">✕ Đóng</button>
          <span style="color:#fff;font-size:11px;background:rgba(0,0,0,.6);padding:4px 10px;border-radius:10px">${idx+1}/${slides.length}</span>
        </div>
        <div style="flex:1;display:flex;align-items:center;justify-content:center;padding:20px">
          ${s.image ? `<img src="${esc(s.image)}" style="max-width:100%;max-height:60vh;border-radius:10px;object-fit:contain" onerror="this.style.display='none'">` : ''}
        </div>
        <div style="padding:16px 20px;background:linear-gradient(transparent,rgba(0,0,0,.9));min-height:100px">
          <p style="color:#fff;font-size:14px;line-height:1.6">${esc(s.text)}</p>
        </div>
        <div style="display:flex;gap:10px;padding:10px 20px 20px;justify-content:center">
          <button onclick="prevSlide()" style="background:#333;border:0;color:#fff;padding:10px 20px;border-radius:20px;font-size:12px;cursor:pointer" ${idx===0?'disabled style="opacity:.3"':''}>← Trước</button>
          <button onclick="nextSlide()" style="background:#2d8659;border:0;color:#fff;padding:10px 20px;border-radius:20px;font-size:12px;cursor:pointer" ${idx===slides.length-1?'disabled style="opacity:.3"':''}>Tiếp →</button>
        </div>
      `;
    }
    
    window.nextSlide = function() { if (currentSlide < slides.length - 1) { currentSlide++; renderSlide(currentSlide); } };
    window.prevSlide = function() { if (currentSlide > 0) { currentSlide--; renderSlide(currentSlide); } };
    
    renderSlide(0);
    document.body.appendChild(overlay);
    
    // Swipe support
    let startX = 0;
    overlay.addEventListener('touchstart', e => { startX = e.touches[0].clientX; });
    overlay.addEventListener('touchend', e => {
      const diff = e.changedTouches[0].clientX - startX;
      if (diff < -50) nextSlide();
      else if (diff > 50) prevSlide();
    });
  };
})();