import { Injectable, UnauthorizedException } from "@nestjs/common";
import { PassportStrategy } from "@nestjs/passport";
import { ExtractJwt, Strategy } from "passport-jwt";
import { ConfigService } from "@nestjs/config";
import { PrismaService } from "../prisma/prisma.service";

@Injectable()
export class JwtStrategy extends PassportStrategy(Strategy) {
  constructor(config: ConfigService, private prisma: PrismaService) {
    super({
      jwtFromRequest: ExtractJwt.fromAuthHeaderAsBearerToken(),
      ignoreExpiration: false,
      secretOrKey: config.get<string>("JWT_SECRET", "change-me"),
    });
  }

  async validate(payload: { sub: string; email: string; role: string; tenantId: string }): Promise<any> {
    const user = await this.prisma.client.user.findUnique({ where: { id: payload.sub } });
    if (!user || !user.isActive) throw new UnauthorizedException();
    return { id: user.id, email: user.email, role: user.role, tenantId: user.tenantId };
  }
}