129 lines
3.4 KiB
TypeScript
129 lines
3.4 KiB
TypeScript
import { twilioConfig } from '../config/twilio';
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export interface TokenRequest {
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identity: string;
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roomName: string;
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apiKey?: string;
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apiSecret?: string;
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}
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export interface TokenResponse {
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token: string;
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identity: string;
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roomName: string;
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}
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// 模拟Token生成服务
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// 在实际生产环境中，这应该是一个后端API服务
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export class TokenService {
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// 生成访问令牌
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async generateAccessToken(request: TokenRequest): Promise<TokenResponse> {
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try {
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// 在实际应用中，这里应该调用后端API
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// 这里我们创建一个模拟的token
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const mockToken = this.generateMockToken(request.identity, request.roomName);
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return {
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token: mockToken,
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identity: request.identity,
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roomName: request.roomName,
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};
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} catch (error) {
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console.error('Error generating access token:', error);
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throw new Error('Failed to generate access token');
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}
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}
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// 生成模拟Token（仅用于开发测试）
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private generateMockToken(identity: string, roomName: string): string {
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// 这是一个简化的JWT模拟
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// 实际应用中应该使用Twilio SDK在后端生成真实的token
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const header = {
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typ: 'JWT',
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alg: 'HS256',
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cty: 'twilio-fpa;v=1'
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};
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const payload = {
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iss: twilioConfig.apiKey,
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sub: twilioConfig.accountSid,
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nbf: Math.floor(Date.now() / 1000),
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exp: Math.floor(Date.now() / 1000) + 3600, // 1小时有效期
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jti: `${twilioConfig.apiKey}-${Date.now()}`,
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grants: {
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identity: identity,
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video: {
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room: roomName
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}
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}
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};
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// 在实际应用中，这里应该用正确的签名算法
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const encodedHeader = btoa(JSON.stringify(header));
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const encodedPayload = btoa(JSON.stringify(payload));
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const signature = btoa(`${twilioConfig.apiSecret}-signature`);
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return `${encodedHeader}.${encodedPayload}.${signature}`;
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}
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// 验证Token（模拟）
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validateToken(token: string): boolean {
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try {
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const parts = token.split('.');
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if (parts.length !== 3) return false;
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const payload = JSON.parse(atob(parts[1]));
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const now = Math.floor(Date.now() / 1000);
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return payload.exp > now;
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} catch {
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return false;
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}
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}
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// 解析Token信息
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parseToken(token: string): { identity: string; roomName: string } | null {
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try {
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const parts = token.split('.');
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if (parts.length !== 3) return null;
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const payload = JSON.parse(atob(parts[1]));
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return {
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identity: payload.grants?.identity || '',
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roomName: payload.grants?.video?.room || '',
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};
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} catch {
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return null;
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}
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}
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}
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export const tokenService = new TokenService();
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// Express.js API端点示例（如果需要真实的后端服务）
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export const createTokenEndpoint = () => {
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return async (req: any, res: any) => {
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try {
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const { identity, roomName } = req.body;
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if (!identity || !roomName) {
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return res.status(400).json({
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error: 'Identity and roomName are required'
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});
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}
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const tokenResponse = await tokenService.generateAccessToken({
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identity,
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roomName,
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});
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res.json(tokenResponse);
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} catch (error) {
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console.error('Token generation error:', error);
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res.status(500).json({
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error: 'Failed to generate token'
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});
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}
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};
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};
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