/**
 * WijiBoard – Home Section
 * web/js/sections/home.js
 *
 * A minimal placeholder home section.
 */

import BLE from '../ble.js';

const HomeSection = {
  _cleanup: [],

  mount(container) {
    container.innerHTML = `
      <div class="section-page fade-in">
        <div class="section-header">
          <h2>WijiBoard</h2>
          <p>WiFi Spirit Board — SCARA arm controller. Select a section from the sidebar to get started.</p>
        </div>

        <div class="grid-2" style="margin-bottom:16px">
          <!-- Status card -->
          <div class="card">
            <div class="card-header">
              <span class="card-title">Connection</span>
            </div>
            <div class="status-row" style="margin-bottom:10px">
              <span class="status-label">BLE</span>
              <span class="status-value" id="home-ble-status">
                ${BLE.isConnected() ? `✓ ${BLE.getDeviceName()}` : 'Not connected'}
              </span>
            </div>
            <p style="font-size:0.8rem;color:var(--text-muted)">
              Use the <strong style="color:var(--text-secondary)">Connect</strong> button
              in the top bar to pair with the WijiBoard via Bluetooth.
              The device name is <code style="color:var(--accent-blue)">WijiBoard</code>.
            </p>
          </div>

          <!-- About card -->
          <div class="card">
            <div class="card-header">
              <span class="card-title">About</span>
            </div>
            <p style="font-size:0.82rem;line-height:1.8;color:var(--text-secondary)">
              This dashboard controls a two-arm SCARA robot that moves a planchette 
              across a spirit board. It uses <strong style="color:var(--text-primary)">Web Bluetooth</strong> 
              to communicate with an ESP32-C3 running two 28BYJ-48 stepper motors 
              with AccelStepper.
            </p>
          </div>
        </div>

        <!-- Sections overview -->
        <div class="card">
          <div class="card-header">
            <span class="card-title">Sections</span>
          </div>
          <div class="grid-2">
            <button class="sidebar-nav-item" data-route="board-control"
                    onclick="document.getElementById('nav-board-control').click()"
                    style="padding:14px 16px;background:var(--surface-2);text-align:left;border:none;cursor:pointer;width:100%;">
              <svg class="nav-icon" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
                <path d="M12 20h9M16.5 3.5a2.121 2.121 0 0 1 3 3L7 19l-4 1 1-4L16.5 3.5z"/>
              </svg>
              <div>
                <div style="font-weight:600;font-size:0.875rem;color:var(--text-primary)">Board Control</div>
                <div style="font-size:0.75rem;color:var(--text-muted);margin-top:2px">Interactive map navigation</div>
              </div>
            </button>

            <button class="sidebar-nav-item" data-route="input-text"
                    onclick="document.getElementById('nav-input-text').click()"
                    style="padding:14px 16px;background:var(--surface-2);text-align:left;border:none;cursor:pointer;width:100%;">
              <svg class="nav-icon" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
                <path d="M21 11.5a8.38 8.38 0 0 1-.9 3.8 8.5 8.5 0 0 1-7.6 4.7 8.38 8.38 0 0 1-3.8-.9L3 21l1.9-5.7a8.38 8.38 0 0 1-.9-3.8 8.5 8.5 0 0 1 4.7-7.6 8.38 8.38 0 0 1 3.8-.9h.5a8.48 8.48 0 0 1 8 8v.5z"/>
              </svg>
              <div>
                <div style="font-weight:600;font-size:0.875rem;color:var(--text-primary)">Input Text</div>
                <div style="font-size:0.75rem;color:var(--text-muted);margin-top:2px">Spell out words automatically</div>
              </div>
            </button>

            <button class="sidebar-nav-item" data-route="sequence-editor"
                    onclick="document.getElementById('nav-sequence-editor').click()"
                    style="padding:14px 16px;background:var(--surface-2);text-align:left;border:none;cursor:pointer;width:100%;">
              <svg class="nav-icon"><use href="web/assets/icons.svg#icon-sequence"></use></svg>
              <div>
                <div style="font-weight:600;font-size:0.875rem;color:var(--text-primary)">Sequence Editor</div>
                <div style="font-size:0.75rem;color:var(--text-muted);margin-top:2px">Build and test custom sequences</div>
              </div>
            </button>

            <button class="sidebar-nav-item" data-route="stepper-test"
                    onclick="document.getElementById('nav-stepper-test').click()"
                    style="padding:14px 16px;background:var(--surface-2);text-align:left;border:none;cursor:pointer;width:100%;">
              <svg class="nav-icon" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
                <circle cx="12" cy="12" r="3"/><path d="M12 1v4M12 19v4M4.22 4.22l2.83 2.83M16.95 16.95l2.83 2.83M1 12h4M19 12h4M4.22 19.78l2.83-2.83M16.95 7.05l2.83-2.83"/>
              </svg>
              <div>
                <div style="font-weight:600;font-size:0.875rem;color:var(--text-primary)">Stepper Test</div>
                <div style="font-size:0.75rem;color:var(--text-muted);margin-top:2px">Manually jog each motor, visualize arm position</div>
              </div>
            </button>
          </div>
        </div>

        <!-- PWA Install App card (hidden by default) -->
        <div class="card" id="home-pwa-install-card" style="display: none; margin-top: 16px;">
          <div class="card-header">
            <span class="card-title">Install App</span>
          </div>
          <p style="font-size: 0.82rem; color: var(--text-secondary); margin-bottom: 12px; line-height: 1.5;">
            Install WijiBoard to your device for a native app experience and full-screen control.
          </p>
          <button class="btn btn-primary" id="home-btn-install-pwa" style="width: 100%; justify-content: center;">
            <svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" style="margin-right: 8px;">
              <path d="M21 15v4a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2v-4"></path>
              <polyline points="7 10 12 15 17 10"></polyline>
              <line x1="12" y1="15" x2="12" y2="3"></line>
            </svg>
            Install WijiBoard
          </button>
        </div>

      </div>
    `;

    // Keep home BLE status label in sync
    const statusEl = container.querySelector('#home-ble-status');
    const update = () => {
      if (statusEl) statusEl.textContent = BLE.isConnected()
        ? `✓ ${BLE.getDeviceName()}`
        : 'Not connected';
    };
    BLE.on('connected', update);
    BLE.on('disconnected', update);

    // PWA Install Logic
    const pwaCard = container.querySelector('#home-pwa-install-card');
    const pwaBtn = container.querySelector('#home-btn-install-pwa');

    const checkPwaStatus = () => {
      if (window.deferredPrompt && pwaCard) {
        pwaCard.style.display = 'block';
      }
    };
    
    // Check initially in case the event fired before we mounted
    checkPwaStatus();
    
    window.addEventListener('pwa-installable', checkPwaStatus);
    
    if (pwaBtn) {
      pwaBtn.addEventListener('click', async () => {
        if (!window.deferredPrompt) return;
        window.deferredPrompt.prompt();
        const { outcome } = await window.deferredPrompt.userChoice;
        console.log(`User response to the install prompt: ${outcome}`);
        window.deferredPrompt = null;
        pwaCard.style.display = 'none';
      });
    }

    this._cleanup = [
      () => BLE.off('connected', update),
      () => BLE.off('disconnected', update),
      () => window.removeEventListener('pwa-installable', checkPwaStatus),
    ];
  },

  unmount() {
    this._cleanup.forEach(fn => fn());
    this._cleanup = [];
  },
};

export default HomeSection;