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 '../../../database/prisma.service';

@Injectable()
export class JwtStrategy extends PassportStrategy(Strategy) {
  constructor(
    private readonly config: ConfigService,
    private readonly prisma: PrismaService,
  ) {
    super({
      jwtFromRequest: ExtractJwt.fromAuthHeaderAsBearerToken(),
      ignoreExpiration: false,
      secretOrKey: config.get<string>('auth.jwtSecret'),
    });
  }

  async validate(payload: { sub: string; email: string; role: string }) {
    const user = await this.prisma.user.findUnique({
      where: { id: payload.sub },
      select: { id: true, email: true, role: true, isActive: true },
    });

    if (!user || !user.isActive) {
      throw new UnauthorizedException();
    }

    return { sub: user.id, email: user.email, role: user.role };
  }
}