// AI Chat Panel — DashCaddy AI Intent Router frontend
(function() {
  let chatMessages = [];
  let chatHistory = [];

  function createChatPanel() {
    const existing = document.getElementById('ai-chat-panel');
    if (existing) existing.remove();

    const panel = document.createElement('div');
    panel.id = 'ai-chat-panel';
    panel.style.cssText = `
      position: fixed; bottom: 80px; right: 20px; width: 400px; max-width: 95vw;
      height: 500px; max-height: 70vh; background: var(--bg-card, #1a1a2e);
      border: 1px solid var(--border, #333); border-radius: 12px;
      display: none; flex-direction: column; z-index: 9999;
      box-shadow: 0 8px 32px rgba(0,0,0,0.4);
    `;

    panel.innerHTML = `
      <div style="padding: 14px 18px; border-bottom: 1px solid var(--border,#333); display: flex; align-items: center; gap: 10px;">
        <span style="font-size: 1.3rem;">🤖</span>
        <div style="flex:1;">
          <div style="font-weight: 700; font-size: 0.95rem;">AI Assistant</div>
          <div id="ai-status" style="font-size: 0.72rem; color: var(--text-muted,#666);">Pattern matching • No key needed</div>
        </div>
        <button onclick="document.getElementById('ai-chat-panel').style.display='none'" style="background:none;border:none;font-size:1.4rem;cursor:pointer;color:var(--text-muted,#888);">×</button>
      </div>
      <div id="ai-chat-messages" style="flex:1; overflow-y:auto; padding:14px; display:flex; flex-direction:column; gap:10px;">
        <div style="background:rgba(99,102,241,0.08); border-radius:10px; padding:12px; font-size:0.85rem; color:var(--text-muted,#aaa);">
          👋 Hi! I can help you deploy apps, diagnose issues, and manage your server. Try:
          <div style="margin-top:8px; display:flex; flex-wrap:wrap; gap:6px;">
            <button class="ai-suggestion" onclick="window.aiChat.send('"Deploy Plex"')" style="background:rgba(99,102,241,0.15); border:1px solid rgba(99,102,241,0.3); border-radius:16px; padding:4px 12px; font-size:0.78rem; cursor:pointer; color:#a5b4fc;">Deploy Plex</button>
            <button class="ai-suggestion" onclick="window.aiChat.send('"I want to stream movies"')" style="background:rgba(99,102,241,0.15); border:1px solid rgba(99,102,241,0.3); border-radius:16px; padding:4px 12px; font-size:0.78rem; cursor:pointer; color:#a5b4fc;">Stream movies</button>
            <button class="ai-suggestion" onclick="window.aiChat.send('"Block ads on my network"')" style="background:rgba(99,102,241,0.15); border:1px solid rgba(99,102,241,0.3); border-radius:16px; padding:4px 12px; font-size:0.78rem; cursor:pointer; color:#a5b4fc;">Block ads</button>
            <button class="ai-suggestion" onclick="window.aiChat.send('"Is everything OK?')" style="background:rgba(99,102,241,0.15); border:1px solid rgba(99,102,241,0.3); border-radius:16px; padding:4px 12px; font-size:0.78rem; cursor:pointer; color:#a5b4fc;">System health</button>
          </div>
        </div>
      </div>
      <div style="padding:12px; border-top:1px solid var(--border,#333);">
        <div style="display:flex; gap:8px;">
          <input id="ai-chat-input" type="text" placeholder="Ask me anything..." 
            onkeypress="if(event.key==='Enter') window.aiChat.send()"
            style="flex:1; background:var(--bg-input,#0f0f1a); border:1px solid var(--border,#333); border-radius:8px; padding:10px 14px; color:var(--text,#fff); font-size:0.88rem; outline:none;">
          <button onclick="window.aiChat.send()" style="background:#6366f1; border:none; border-radius:8px; padding:0 16px; color:#fff; cursor:pointer; font-weight:600;">→</button>
        </div>
      </div>
    `;
    document.body.appendChild(panel);
  }

  function toggle() {
    let panel = document.getElementById('ai-chat-panel');
    if (!panel) { createChatPanel(); panel = document.getElementById('ai-chat-panel'); }
    panel.style.display = panel.style.display === 'flex' ? 'none' : 'flex';
    if (panel.style.display === 'flex') document.getElementById('ai-chat-input').focus();
  }

  function addMessage(role, text, extra) {
    const container = document.getElementById('ai-chat-messages');
    if (!container) return;
    const div = document.createElement('div');
    const isUser = role === 'user';
    div.style.cssText = isUser
      ? 'align-self:flex-end; background:rgba(99,102,241,0.15); border-radius:10px 10px 2px 10px; padding:10px 14px; max-width:85%; font-size:0.85rem;'
      : 'align-self:flex-start; background:rgba(255,255,255,0.05); border-radius:10px 10px 10px 2px; padding:10px 14px; max-width:85%; font-size:0.85rem;';
    div.textContent = text;
    container.appendChild(div);

    // Extra content (recommendations, action buttons)
    if (extra) {
      const extraDiv = document.createElement('div');
      extraDiv.style.cssText = 'align-self:flex-start; max-width:85%; margin-top:4px;';
      if (extra.recommendations) {
        extra.recommendations.forEach(rec => {
          const btn = document.createElement('button');
          btn.textContent = `📦 Deploy ${rec.app}`;
          btn.style.cssText = 'display:block; margin:4px 0; background:rgba(34,197,94,0.12); border:1px solid rgba(34,197,94,0.3); border-radius:8px; padding:8px 12px; cursor:pointer; font-size:0.8rem; color:#4ade80;';
          btn.onclick = () => window.aiChat.send('Deploy ' + rec.app);
          extraDiv.appendChild(btn);
        });
      }
      if (extra.appId) {
        const btn = document.createElement('button');
        btn.textContent = `🚀 Deploy ${extra.appId}`;
        btn.style.cssText = 'display:block; margin:4px 0; background:rgba(34,197,94,0.12); border:1px solid rgba(34,197,94,0.3); border-radius:8px; padding:8px 12px; cursor:pointer; font-size:0.8rem; color:#4ade80;';
        btn.onclick = () => window.aiChat.deploy(extra.appId);
        extraDiv.appendChild(btn);
      }
      if (extra.suggestions) {
        const list = document.createElement('div');
        list.style.cssText = 'font-size:0.78rem; color:var(--text-muted,#888); padding:4px 0;';
        list.innerHTML = extra.suggestions.map(s => '• ' + s).join('<br>');
        extraDiv.appendChild(list);
      }
      if (extra.action === 'diagnose') {
        const btn = document.createElement('button');
        btn.textContent = '🔍 Run Diagnostics';
        btn.style.cssText = 'display:block; margin:4px 0; background:rgba(251,191,36,0.12); border:1px solid rgba(251,191,36,0.3); border-radius:8px; padding:8px 12px; cursor:pointer; font-size:0.8rem; color:#fbbf24;';
        btn.onclick = () => window.location.href = '#health';
        extraDiv.appendChild(btn);
      }
      if (extra.action === 'backup') {
        const btn = document.createElement('button');
        btn.textContent = '💾 Create Backup';
        btn.style.cssText = 'display:block; margin:4px 0; background:rgba(99,102,241,0.12); border:1px solid rgba(99,102,241,0.3); border-radius:8px; padding:8px 12px; cursor:pointer; font-size:0.8rem; color:#a5b4fc;';
        btn.onclick = () => { if (window.createBackup) window.createBackup(); };
        extraDiv.appendChild(btn);
      }
      container.appendChild(extraDiv);
    }
    container.scrollTop = container.scrollHeight;
  }

  async function send(prefilled) {
    const input = document.getElementById('ai-chat-input');
    const message = prefilled || input.value.trim();
    if (!message) return;
    input.value = '';

    addMessage('user', message);

    // Typing indicator
    const container = document.getElementById('ai-chat-messages');
    const typing = document.createElement('div');
    typing.id = 'ai-typing';
    typing.style.cssText = 'align-self:flex-start; color:var(--text-muted,#666); font-size:0.8rem; padding:8px 14px;';
    typing.textContent = '🤖 Thinking...';
    container.appendChild(typing);
    container.scrollTop = container.scrollHeight;

    try {
      const res = await secureFetch('/api/v1/ai/intent', {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({ message, context: {} })
      });
      const data = await res.json();
      typing.remove();

      if (data.success !== false && data.data) {
        const r = data.data;
        const response = r.response || {};
        addMessage('ai', response.message || r.response?.message || 'Action: ' + (r.action || r.intent), response);
      } else {
        addMessage('ai', data.error || 'Sorry, something went wrong.');
      }
    } catch (e) {
      typing.remove();
      addMessage('ai', 'Connection error: ' + e.message);
    }
  }

  async function deploy(appId) {
    addMessage('user', 'Deploy ' + appId);
    addMessage('ai', `Launching ${appId} from the catalog...`);
    // Trigger the app selector with this app
    if (window.openAppSelector) {
      window.openAppSelector(appId);
    } else {
      addMessage('ai', `Search for ${appId} in the App Catalog to deploy it.`);
    }
  }

  window.aiChat = { send, deploy, toggle };
  window.toggleAIChat = toggle;
})();