import { Injectable, CanActivate, ExecutionContext, UnauthorizedException } from '@nestjs/common';
import { SyncIdentityHandler } from '../../application/handlers/user/sync-identity.handler';
import { IdentityData } from '../../../../core/auth/interfaces/identity-data';

@Injectable()
export class CurrentUserGuard implements CanActivate {
  constructor(
    private readonly syncIdentityHandler: SyncIdentityHandler,
  ) {}

  async canActivate(context: ExecutionContext): Promise<boolean> {
    const request = context.switchToHttp().getRequest() as any;

    const identity = request.identity as IdentityData | undefined;

    if (!identity) {
      throw new UnauthorizedException('Identity is missing.');
    }

    const user = await this.syncIdentityHandler.execute(identity);

    // attach domain user as currentUser
    request.currentUser = user;

    return true;
  }
}