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188
uni_modules/ak-sbsrv/utssdk/web/device-manager.uts
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188
uni_modules/ak-sbsrv/utssdk/web/device-manager.uts
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// 设备管理相关：扫描、连接、断开、重连
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import { BleDevice, BLE_CONNECTION_STATE } from '../interface.uts';
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import type { BleConnectOptionsExt } from '../interface.uts';
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export class DeviceManager {
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private devices = {};
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private servers = {};
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private connectionStates = {};
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private allowedServices = {};
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private reconnectAttempts: number = 0;
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private maxReconnectAttempts: number = 5;
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private reconnectDelay: number = 2000;
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private reconnectTimeoutId: number = 0;
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private autoReconnect: boolean = false;
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private connectionStateChangeListeners: Function[] = [];
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private deviceFoundListeners: ((device: BleDevice) => void)[] = [];
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private scanFinishedListeners: (() => void)[] = [];
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onDeviceFound(listener: (device: BleDevice) => void) {
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this.deviceFoundListeners.push(listener);
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}
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onScanFinished(listener: () => void) {
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this.scanFinishedListeners.push(listener);
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}
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private emitDeviceFound(device: BleDevice) {
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for (const listener of this.deviceFoundListeners) {
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try { listener(device); } catch (e) {}
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}
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}
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private emitScanFinished() {
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for (const listener of this.scanFinishedListeners) {
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try { listener(); } catch (e) {}
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}
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}
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async startScan(options?: { optionalServices?: string[] } ): Promise<void> {
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if (!navigator.bluetooth) throw new Error('Web Bluetooth API not supported');
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try {
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const scanOptions: any = { acceptAllDevices: true };
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// allow callers to request optionalServices (required by Web Bluetooth to access custom services)
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if (options && Array.isArray(options.optionalServices) && options.optionalServices.length > 0) {
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scanOptions.optionalServices = options.optionalServices;
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}
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// Log the exact options passed to requestDevice for debugging optionalServices propagation
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try {
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console.log('[DeviceManager] requestDevice options:', JSON.stringify(scanOptions));
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} catch (e) {
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console.log('[DeviceManager] requestDevice options (raw):', scanOptions);
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}
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const device = await navigator.bluetooth.requestDevice(scanOptions);
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try {
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console.log('[DeviceManager] requestDevice result:', device);
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} catch (e) {
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console.log('[DeviceManager] requestDevice result (raw):', device);
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}
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if (device) {
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console.log(device)
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// 格式化 deviceId 为 MAC 地址格式
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const formatDeviceId = (id: string): string => {
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// 如果是12位16进制字符串（如 'AABBCCDDEEFF'），转为 'AA:BB:CC:DD:EE:FF'
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if (/^[0-9A-Fa-f]{12}$/.test(id)) {
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return id.match(/.{1,2}/g)!.join(":").toUpperCase();
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}
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// 如果是base64，无法直接转MAC，保留原样
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// 你可以根据实际情况扩展此处
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return id;
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};
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const isConnected = !!this.servers[device.id];
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const formattedId = formatDeviceId(device.id);
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const bleDevice = { deviceId: formattedId, name: device.name, connected: isConnected };
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this.devices[formattedId] = device;
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this.emitDeviceFound(bleDevice);
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}
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this.emitScanFinished();
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} catch (e) {
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this.emitScanFinished();
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throw e;
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}
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}
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onConnectionStateChange(listener: (deviceId: string, state: string) => void) {
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this.connectionStateChangeListeners.push(listener);
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}
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private emitConnectionStateChange(deviceId: string, state: string) {
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for (const listener of this.connectionStateChangeListeners) {
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try {
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listener(deviceId, state);
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} catch (e) {
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// 忽略单个回调异常
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}
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}
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}
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async connectDevice(deviceId: string, options?: BleConnectOptionsExt): Promise<boolean> {
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this.autoReconnect = options?.autoReconnect ?? false;
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try {
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const device = this.devices[deviceId];
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if (!device) throw new Error('设备未找到');
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const server = await device.gatt.connect();
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this.servers[deviceId] = server;
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this.connectionStates[deviceId] = BLE_CONNECTION_STATE.CONNECTED;
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this.reconnectAttempts = 0;
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this.emitConnectionStateChange(deviceId, 'connected');
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// 监听物理断开
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if (device.gatt) {
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device.gatt.onconnectionstatechanged = null;
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device.gatt.onconnectionstatechanged = () => {
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if (!device.gatt.connected) {
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this.emitConnectionStateChange(deviceId, 'disconnected');
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}
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};
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}
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return true;
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} catch (error) {
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if (this.autoReconnect && this.reconnectAttempts < this.maxReconnectAttempts) {
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return this.scheduleReconnect(deviceId);
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}
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throw error;
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}
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}
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async disconnectDevice(deviceId: string): Promise<void> {
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const device = this.devices[deviceId];
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if (!device) throw new Error('设备未找到');
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try {
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if (device.gatt && device.gatt.connected) {
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device.gatt.disconnect();
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}
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delete this.servers[deviceId];
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this.connectionStates[deviceId] = BLE_CONNECTION_STATE.DISCONNECTED;
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this.emitConnectionStateChange(deviceId, 'disconnected');
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} catch (e) {
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throw e;
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}
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}
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getConnectedDevices(): BleDevice[] {
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const connectedDevices: BleDevice[] = [];
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for (const deviceId in this.servers) {
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const device = this.devices[deviceId];
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if (device) {
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connectedDevices.push({ deviceId: device.id, name: device.name || '未知设备', connected: true });
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}
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}
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return connectedDevices;
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}
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handleDisconnect(deviceId: string) {
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this.connectionStates[deviceId] = BLE_CONNECTION_STATE.DISCONNECTED;
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this.emitConnectionStateChange(deviceId, 'disconnected');
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if (this.autoReconnect && this.reconnectAttempts < this.maxReconnectAttempts) {
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this.scheduleReconnect(deviceId);
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}
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}
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private scheduleReconnect(deviceId: string): Promise<boolean> {
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this.reconnectAttempts++;
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return new Promise((resolve, reject) => {
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this.reconnectTimeoutId = setTimeout(() => {
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this.connectDevice(deviceId, { autoReconnect: true })
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.then(resolve)
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.catch(reject);
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}, this.reconnectDelay);
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});
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}
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cancelReconnect() {
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if (this.reconnectTimeoutId) {
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clearTimeout(this.reconnectTimeoutId);
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this.reconnectTimeoutId = 0;
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}
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this.autoReconnect = false;
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this.reconnectAttempts = 0;
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}
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setMaxReconnectAttempts(attempts: number) {
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this.maxReconnectAttempts = attempts;
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}
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setReconnectDelay(delay: number) {
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this.reconnectDelay = delay;
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}
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isDeviceConnected(deviceId: string): boolean {
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return !!this.servers[deviceId];
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}
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}
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