import { HttpException, HttpStatus, Injectable } from '@nestjs/common';
import { ProposalQuota } from '@task-stream/api/tracker/application';

/** The proposal quota, as the HTTP answer: 429 once it is used up. */
@Injectable()
export class ProposalLimiter {
  constructor(private readonly quota: ProposalQuota) {}

  async take(address: string): Promise<void> {
    if (!(await this.quota.take(address)))
      throw new HttpException(
        'Too many proposals from here; try again in a few minutes',
        HttpStatus.TOO_MANY_REQUESTS,
      );
  }
}