import { Injectable, UnauthorizedException } from '@nestjs/common';
import { PassportStrategy } from '@nestjs/passport';
import { ExtractJwt, Strategy } from 'passport-jwt';

export interface JwtPayload {
  sub: string;
  email?: string;
  phone?: string;
  tenantId: string;
  roles: string[];
}

@Injectable()
export class JwtStrategy extends PassportStrategy(Strategy) {
  constructor() {
    super({
      jwtFromRequest: ExtractJwt.fromAuthHeaderAsBearerToken(),
      ignoreExpiration: false,
      secretOrKey: process.env.JWT_SECRET || 'dev-secret',
    });
  }

  async validate(payload: JwtPayload) {
    if (!payload.sub) {
      throw new UnauthorizedException();
    }
    return {
      userId: payload.sub,
      email: payload.email,
      tenantId: payload.tenantId,
      roles: payload.roles,
    };
  }
}
