init

backend/src/auth/strategies/jwt.strategy.ts

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+import { Injectable } from '@nestjs/common';
+import { PassportStrategy } from '@nestjs/passport';
+import { ExtractJwt, Strategy } from 'passport-jwt';
+import { ConfigService } from '@nestjs/config';
+
+interface JwtPayload {
+  sub: string;
+  email: string;
+  role: string;
+}
+
+@Injectable()
+export class JwtStrategy extends PassportStrategy(Strategy) {
+  constructor(configService: ConfigService) {
+    super({
+      jwtFromRequest: ExtractJwt.fromAuthHeaderAsBearerToken(),
+      ignoreExpiration: false,
+      secretOrKey: configService.get('jwt.secret'),
+    });
+  }
+
+  async validate(payload: JwtPayload) {
+    return {
+      id: payload.sub,
+      email: payload.email,
+      role: payload.role,
+    };
+  }
+}