/**
 * SigMesh Gateway 配网控制面板 - Lovelace 自定义卡片
 *
 * 使用方法:
 * 1. 在 HACS 中安装本集成后，卡片会自动可用
 * 2. 或者手动复制此文件到 HA 的 www/sigmesh_gateway/ 目录
 * 3. 在 HA 的 configuration.yaml 中添加:
 *    frontend:
 *      extra_module_url:
 *        - /local/sigmesh_gateway/sigmesh-gateway-panel.js
 * 4. 在 Lovelace Dashboard 中添加自定义卡片: custom:sigmesh-gateway-panel
 */

// 配置常量
const API_BASE = '/api/sigmesh_gateway';
const POLL_INTERVAL = 3000;

// 注册到全局自定义卡片列表
if (!window.customCards) {
  window.customCards = [];
}
window.customCards.push({
  type: 'sigmesh-gateway-panel',
  name: 'SigMesh Gateway 配网管理',
  description: '管理 SigMesh 网关的配网和分组功能',
  preview: true,
  documentationURL: 'https://github.com/impress-sig-mesh/sigmesh_gateway',
});

/**
 * Lovelace 卡片组件
 */
class SigMeshGatewayCard extends HTMLElement {
  static get placeholder() {
    return {
      type: 'custom:sigmesh-gateway-panel',
      label: 'SigMesh Gateway 配网管理'
    };
  }

  static getConfigElement() {
    // 返回配置元素（如果需要配置界面）
    return document.createElement('div');
  }

  static getStubConfig() {
    return {};
  }

  constructor() {
    super();
    this._hass = null;
    this._config = null;
    this._state = 'idle';
    this._devices = [];
    this._groups = [];
    this._pollTimer = null;
    this._selectedDevice = null;
    this._groupAddress = '0xC001';
  }

  set hass(hass) {
    this._hass = hass;
    if (!this.hasAttribute('rendered')) {
      this._render();
      this.setAttribute('rendered', 'true');
    }
    this._updateState();
  }

  setConfig(config) {
    this._config = config;
  }

  getCardSize() {
    return 10;
  }

  connectedCallback() {
    this._startPolling();
  }

  disconnectedCallback() {
    this._stopPolling();
  }

  _startPolling() {
    this._fetchStatus();
    this._pollTimer = setInterval(() => this._fetchStatus(), POLL_INTERVAL);
  }

  _stopPolling() {
    if (this._pollTimer) {
      clearInterval(this._pollTimer);
      this._pollTimer = null;
    }
  }

  async _fetchStatus() {
    if (!this._hass) return;

    try {
      const response = await fetch(`${API_BASE}/status`, {
        headers: {
          'Authorization': `Bearer ${this._hass.auth.data.access_token}`,
          'Content-Type': 'application/json',
        },
      });
      const data = await response.json();
      this._state = data.state;
      this._devices = data.devices || [];
      this._groups = data.groups || [];
      this._updateState();
    } catch (error) {
      console.error('获取状态失败:', error);
    }
  }

  _updateState() {
    if (!this.shadowRoot) return;

    // 更新状态徽章
    const statusBadge = this.shadowRoot.querySelector('.status-badge');
    if (statusBadge) {
      statusBadge.textContent = this._state;
      statusBadge.style.background = this._getStateColor();
    }

    // 更新设备列表
    this._renderDeviceList();

    // 更新组列表
    this._renderGroupList();
  }

  _getStateColor() {
    const colors = {
      idle: '#4caf50',
      scanning: '#2196f3',
      prov_starting: '#ff9800',
      prov_in_progress: '#ff9800',
      prov_completed: '#4caf50',
      prov_failed: '#f44336',
      timeout: '#f44336',
    };
    return colors[this._state] || '#757575';
  }

  _render() {
    this.attachShadow({ mode: 'open' });

    this.shadowRoot.innerHTML = `
      <style>
        :host {
          display: block;
        }
        ha-card {
          padding: 16px;
        }
        .header {
          display: flex;
          justify-content: space-between;
          align-items: center;
          margin-bottom: 16px;
        }
        .header h2 {
          margin: 0;
          color: var(--primary-text-color);
        }
        .status-badge {
          padding: 4px 12px;
          border-radius: 12px;
          font-size: 12px;
          font-weight: bold;
          text-transform: uppercase;
          background: ${this._getStateColor()};
          color: white;
        }
        .section {
          margin-bottom: 20px;
        }
        .section-title {
          font-size: 14px;
          font-weight: bold;
          color: var(--secondary-text-color);
          margin-bottom: 8px;
          text-transform: uppercase;
        }
        .device-list {
          display: grid;
          gap: 8px;
        }
        .device-item {
          display: flex;
          justify-content: space-between;
          align-items: center;
          padding: 12px;
          background: var(--secondary-background-color);
          border-radius: 4px;
          cursor: pointer;
          transition: background 0.2s;
        }
        .device-item:hover {
          background: var(--accent-color);
        }
        .device-item.selected {
          background: var(--primary-color);
          color: white;
        }
        .device-info {
          flex: 1;
        }
        .device-name {
          font-weight: bold;
        }
        .device-details {
          font-size: 12px;
          color: var(--secondary-text-color);
        }
        .device-item.selected .device-details {
          color: rgba(255,255,255,0.7);
        }
        .button-group {
          display: flex;
          gap: 8px;
          flex-wrap: wrap;
        }
        .button {
          padding: 8px 16px;
          border: none;
          border-radius: 4px;
          cursor: pointer;
          font-size: 14px;
          transition: opacity 0.2s;
          background: var(--primary-color);
          color: white;
        }
        .button:hover {
          opacity: 0.8;
        }
        .button-secondary {
          background: var(--secondary-background-color);
          color: var(--primary-text-color);
        }
        .button-danger {
          background: var(--error-color, #f44336);
        }
        .button:disabled {
          opacity: 0.5;
          cursor: not-allowed;
        }
        .input-group {
          display: flex;
          gap: 8px;
          margin-bottom: 12px;
          flex-wrap: wrap;
        }
        .input-field {
          flex: 1;
          min-width: 120px;
          padding: 8px 12px;
          border: 1px solid var(--divider-color);
          border-radius: 4px;
          background: var(--secondary-background-color);
          color: var(--primary-text-color);
        }
        .group-list {
          display: grid;
          gap: 8px;
        }
        .group-item {
          display: flex;
          justify-content: space-between;
          align-items: center;
          padding: 8px 12px;
          background: var(--secondary-background-color);
          border-radius: 4px;
        }
        .empty-state {
          text-align: center;
          padding: 24px;
          color: var(--secondary-text-color);
        }
        ha-svg-icon {
          width: 20px;
          height: 20px;
        }
      </style>

      <ha-card>
        <div class="header">
          <h2>SigMesh Gateway 配网管理</h2>
          <span class="status-badge">${this._state}</span>
        </div>

        ${this._renderScanSection()}
        ${this._renderDeviceList()}
        ${this._renderProvActions()}
        ${this._renderGroupManagement()}
        ${this._renderGroupList()}
      </ha-card>
    `;

    this._attachEventListeners();
  }

  _renderScanSection() {
    const isScanning = this._state === 'scanning';
    return `
      <div class="section">
        <div class="section-title">设备扫描</div>
        <div class="button-group">
          <button class="button" id="btn-scan" ${isScanning ? 'disabled' : ''}>
            ${isScanning ? '扫描中...' : '开始扫描'}
          </button>
          <button class="button button-secondary" id="btn-refresh">
            刷新设备列表
          </button>
        </div>
      </div>
    `;
  }

  _renderDeviceList() {
    if (this._devices.length === 0) {
      return `
        <div class="section">
          <div class="section-title">已发现设备</div>
          <div class="empty-state">暂无设备，请先扫描</div>
        </div>
      `;
    }

    return `
      <div class="section">
        <div class="section-title">已发现设备 (${this._devices.length})</div>
        <div class="device-list">
          ${this._devices.map((device, index) => `
            <div class="device-item ${this._selectedDevice === index ? 'selected' : ''}" data-index="${index}">
              <div class="device-info">
                <div class="device-name">设备 ${device.mac}</div>
                <div class="device-details">
                  元素数：${device.elements} |
                  地址：${device.address || '未分配'}
                </div>
              </div>
            </div>
          `).join('')}
        </div>
      </div>
    `;
  }

  _renderProvActions() {
    if (!this._selectedDevice && this._selectedDevice !== 0) {
      return '';
    }

    const device = this._devices[this._selectedDevice];
    const isProvInProgress = this._state === 'prov_in_progress' || this._state === 'prov_starting';

    return `
      <div class="section">
        <div class="section-title">配网操作 - ${device?.mac}</div>
        <div class="input-group">
          <input type="text" class="input-field" id="device-address"
                 value="${device?.mac || ''}" placeholder="设备地址" readonly>
        </div>
        <div class="button-group">
          <button class="button" id="btn-prov-start" ${isProvInProgress ? 'disabled' : ''}>
            开始配网
          </button>
          <button class="button button-danger" id="btn-prov-stop" ${!isProvInProgress ? 'disabled' : ''}>
            停止配网
          </button>
          <button class="button button-secondary" id="btn-bind-key">
            绑定 App Key
          </button>
        </div>
      </div>
    `;
  }

  _renderGroupManagement() {
    if (!this._selectedDevice && this._selectedDevice !== 0) {
      return '';
    }

    return `
      <div class="section">
        <div class="section-title">分组管理</div>
        <div class="input-group">
          <input type="text" class="input-field" id="target-address"
                 value="${this._devices[this._selectedDevice]?.mac || ''}"
                 placeholder="目标地址" readonly>
          <input type="text" class="input-field" id="group-address"
                 value="${this._groupAddress}" placeholder="组地址">
          <input type="number" class="input-field" id="model-id"
                 value="4352" placeholder="Model ID" min="0" max="65535">
        </div>
        <div class="button-group">
          <button class="button" id="btn-add-group">
            添加到组
          </button>
          <button class="button button-danger" id="btn-remove-group">
            从组移除
          </button>
        </div>
      </div>
    `;
  }

  _renderGroupList() {
    if (this._groups.length === 0) {
      return `
        <div class="section">
          <div class="section-title">组配置</div>
          <div class="empty-state">暂无组配置</div>
        </div>
      `;
    }

    return `
      <div class="section">
        <div class="section-title">组配置 (${this._groups.length})</div>
        <div class="group-list">
          ${this._groups.map(group => `
            <div class="group-item">
              <span>组地址：<strong>${group.address}</strong></span>
              <span>元素：${group.element_address}</span>
              <span>Model: ${group.model_id}</span>
            </div>
          `).join('')}
        </div>
      </div>
    `;
  }

  _renderDeviceList() {
    const deviceListEl = this.shadowRoot.querySelector('.device-list');
    if (!deviceListEl) return;

    deviceListEl.innerHTML = this._devices.map((device, index) => `
      <div class="device-item ${this._selectedDevice === index ? 'selected' : ''}" data-index="${index}">
        <div class="device-info">
          <div class="device-name">设备 ${device.mac}</div>
          <div class="device-details">
            元素数：${device.elements} |
            地址：${device.address || '未分配'}
          </div>
        </div>
      </div>
    `).join('');
  }

  _renderGroupList() {
    const groupListEl = this.shadowRoot.querySelector('.group-list');
    if (!groupListEl) return;

    if (this._groups.length === 0) {
      groupListEl.parentElement.querySelector('.empty-state')?.remove();
      groupListEl.innerHTML = this._groups.map(group => `
        <div class="group-item">
          <span>组地址：<strong>${group.address}</strong></span>
          <span>元素：${group.element_address}</span>
          <span>Model: ${group.model_id}</span>
        </div>
      `).join('');
    } else {
      groupListEl.innerHTML = this._groups.map(group => `
        <div class="group-item">
          <span>组地址：<strong>${group.address}</strong></span>
          <span>元素：${group.element_address}</span>
          <span>Model: ${group.model_id}</span>
        </div>
      `).join('');
    }
  }

  _attachEventListeners() {
    if (!this.shadowRoot) return;

    // 扫描按钮
    this.shadowRoot.querySelector('#btn-scan')?.addEventListener('click', () => this._handleScan());
    this.shadowRoot.querySelector('#btn-refresh')?.addEventListener('click', () => this._fetchStatus());

    // 设备选择
    this.shadowRoot.querySelectorAll('.device-item').forEach(item => {
      item.addEventListener('click', () => {
        const index = parseInt(item.dataset.index);
        this._selectedDevice = index === this._selectedDevice ? null : index;
        this._render();
      });
    });

    // 配网按钮
    this.shadowRoot.querySelector('#btn-prov-start')?.addEventListener('click', () => this._handleProvStart());
    this.shadowRoot.querySelector('#btn-prov-stop')?.addEventListener('click', () => this._handleProvStop());
    this.shadowRoot.querySelector('#btn-bind-key')?.addEventListener('click', () => this._handleBindKey());

    // 分组按钮
    this.shadowRoot.querySelector('#btn-add-group')?.addEventListener('click', () => this._handleAddGroup());
    this.shadowRoot.querySelector('#btn-remove-group')?.addEventListener('click', () => this._handleRemoveGroup());
  }

  async _handleScan() {
    if (!this._hass) return;
    try {
      await fetch(`${API_BASE}/scan`, {
        method: 'POST',
        headers: {
          'Authorization': `Bearer ${this._hass.auth.data.access_token}`,
          'Content-Type': 'application/json',
        },
        body: JSON.stringify({}),
      });
      this._fetchStatus();
    } catch (error) {
      console.error('扫描失败:', error);
    }
  }

  async _handleProvStart() {
    if (!this._hass) return;
    const deviceAddress = this.shadowRoot?.querySelector('#device-address')?.value;
    try {
      await fetch(`${API_BASE}/provisioning`, {
        method: 'POST',
        headers: {
          'Authorization': `Bearer ${this._hass.auth.data.access_token}`,
          'Content-Type': 'application/json',
        },
        body: JSON.stringify({
          action: 'start',
          device_address: deviceAddress,
        }),
      });
      this._fetchStatus();
    } catch (error) {
      console.error('配网失败:', error);
    }
  }

  async _handleProvStop() {
    if (!this._hass) return;
    try {
      await fetch(`${API_BASE}/provisioning`, {
        method: 'POST',
        headers: {
          'Authorization': `Bearer ${this._hass.auth.data.access_token}`,
          'Content-Type': 'application/json',
        },
        body: JSON.stringify({ action: 'stop' }),
      });
      this._fetchStatus();
    } catch (error) {
      console.error('停止配网失败:', error);
    }
  }

  async _handleBindKey() {
    if (!this._hass) return;
    const deviceAddress = this.shadowRoot?.querySelector('#device-address')?.value;
    const elementAddress = 0;
    try {
      await fetch(`${API_BASE}/provisioning`, {
        method: 'POST',
        headers: {
          'Authorization': `Bearer ${this._hass.auth.data.access_token}`,
          'Content-Type': 'application/json',
        },
        body: JSON.stringify({
          action: 'bind',
          device_address: deviceAddress,
          element_address: elementAddress,
        }),
      });
      alert('App Key 绑定成功');
      this._fetchStatus();
    } catch (error) {
      console.error('绑定 App Key 失败:', error);
      alert('绑定失败：' + error.message);
    }
  }

  async _handleAddGroup() {
    if (!this._hass) return;
    const targetAddress = this.shadowRoot?.querySelector('#target-address')?.value;
    const groupAddress = this.shadowRoot?.querySelector('#group-address')?.value;
    const modelId = parseInt(this.shadowRoot?.querySelector('#model-id')?.value || '4352');

    try {
      await fetch(`${API_BASE}/group`, {
        method: 'POST',
        headers: {
          'Authorization': `Bearer ${this._hass.auth.data.access_token}`,
          'Content-Type': 'application/json',
        },
        body: JSON.stringify({
          action: 'add',
          target_address: targetAddress,
          group_address: groupAddress,
          model_id: modelId,
          is_sig: true,
        }),
      });
      this._groupAddress = groupAddress;
      this._fetchStatus();
    } catch (error) {
      console.error('添加分组失败:', error);
    }
  }

  async _handleRemoveGroup() {
    if (!this._hass) return;
    const targetAddress = this.shadowRoot?.querySelector('#target-address')?.value;
    const groupAddress = this.shadowRoot?.querySelector('#group-address')?.value;
    const modelId = parseInt(this.shadowRoot?.querySelector('#model-id')?.value || '4352');

    try {
      await fetch(`${API_BASE}/group`, {
        method: 'POST',
        headers: {
          'Authorization': `Bearer ${this._hass.auth.data.access_token}`,
          'Content-Type': 'application/json',
        },
        body: JSON.stringify({
          action: 'remove',
          target_address: targetAddress,
          group_address: groupAddress,
          model_id: modelId,
          is_sig: true,
        }),
      });
      this._fetchStatus();
    } catch (error) {
      console.error('移除分组失败:', error);
    }
  }
}

// 注册自定义元素
customElements.define('sigmesh-gateway-panel', SigMeshGatewayCard);

// 添加到 window 供调试
window.SigMeshGatewayCard = SigMeshGatewayCard;

console.log('SigMesh Gateway Panel 已加载');