import { Injectable, UnauthorizedException } from '@nestjs/common';
import { PassportStrategy } from '@nestjs/passport';
import { ExtractJwt, Strategy } from 'passport-jwt';
import { ConfigService } from '@nestjs/config';
import { InjectRepository } from '@nestjs/typeorm';
import { Repository } from 'typeorm';
import { User } from '../../users/entities/user.entity';

@Injectable()
export class JwtStrategy extends PassportStrategy(Strategy) {
  constructor(
    config: ConfigService,
    @InjectRepository(User)
    private readonly userRepo: Repository<User>,
  ) {
    super({
        jwtFromRequest: ExtractJwt.fromAuthHeaderAsBearerToken(),
        ignoreExpiration: false,
        secretOrKey: config.get<string>('JWT_SECRET') ?? 'fallback_secret',
    });
  }

  async validate(payload: { sub: number; email: string }) {
    const user = await this.userRepo.findOne({
      where: { id: payload.sub, is_active: true },
      relations: ['team', 'agency'],
    });

    if (!user) throw new UnauthorizedException('Utilisateur introuvable ou désactivé');

    return user; // Injecté dans req.user
  }
}