import { Injectable } from '@nestjs/common';
import * as Joi from 'joi';

import { AbstractActionHandler, AwsProperties, Format } from '../abstract-action.handler';
import { Action } from '../action.enum';
import { KmsService } from './kms.service';
import { RequestContext } from '../_context/request.context';

type QueryParams = {
  KeyId?: string;
  Limit: number;
  Marker?: string;
}

@Injectable()
export class ListAliasesHandler extends AbstractActionHandler<QueryParams> {

  constructor(
    private readonly kmsService: KmsService,
  ) {
    super();
  }

  format = Format.Json;
  action = Action.KmsListAliases;
  validator = Joi.object<QueryParams, true>({ 
    KeyId: Joi.string(),
    Limit: Joi.number().min(1).max(100).default(50),
    Marker: Joi.string(),
  });

  protected async handle({ KeyId, Limit, Marker }: QueryParams, { awsProperties} : RequestContext) {

    const records = await (KeyId 
      ? this.kmsService.findAndCountAliasesByKeyId(awsProperties.accountId, awsProperties.region, Limit, KeyId, Marker)
      : this.kmsService.findAndCountAliases(awsProperties.accountId, awsProperties.region, Limit, Marker)
    )

    const nextMarker = records.length > Limit ? records.pop() : null;

    return {
      Aliases: records.map(r => r.toAws()),
      NextMarker: nextMarker?.name,
      Truncated: !!nextMarker,
    }
  }
}