import { set, get } from '@ember/object';
import { inject as service } from '@ember/service';
import RepositoryService from 'consul-ui/services/repository';
import { PRIMARY_KEY } from 'consul-ui/models/intention';
import dataSource from 'consul-ui/decorators/data-source';

const modelName = 'intention';
export default class IntentionRepository extends RepositoryService {
  @service('env') env;
  managedByCRDs = false;

  getModelName() {
    return modelName;
  }

  getPrimaryKey() {
    return PRIMARY_KEY;
  }

  create(obj) {
    delete obj.Namespace;
    return super.create({
      Action: 'allow',
      ...obj,
    });
  }

  isManagedByCRDs() {
    if (!this.managedByCRDs) {
      this.managedByCRDs = this.store
        .peekAll(this.getModelName())
        .toArray()
        .some(item => item.IsManagedByCRD);
    }
    return this.managedByCRDs;
  }

  // legacy intentions are strange that in order to read/write you need access
  // to either/or the destination or source
  async authorizeBySlug(cb, access, params) {
    const [, source, , destination] = params.id.split(':');
    const ability = this.permissions.abilityFor(this.getModelName());
    params.resources = ability
      .generateForSegment(source)
      .concat(ability.generateForSegment(destination));
    return this.authorizeByPermissions(cb, access, params);
  }

  async persist(obj) {
    const res = await super.persist(...arguments);
    // if Action is set it means we are an l4 type intention
    // we don't delete these at a UI level incase the user
    // would like to switch backwards and forwards between
    // allow/deny/l7 in the forms, but once its been saved
    // to the backend we then delete them
    if (get(res, 'Action.length')) {
      set(res, 'Permissions', []);
    }
    return res;
  }

  @dataSource('/:partition/:ns/:dc/intentions')
  async findAll() {
    return super.findAll(...arguments);
  }

  @dataSource('/:partition/:ns/:dc/intention/:id')
  async findBySlug(params) {
    let item;
    if (params.id === '') {
      const defaultNspace = this.env.var('CONSUL_NSPACES_ENABLED') ? '*' : 'default';
      const defaultPartition = 'default';
      item = await this.create({
        SourceNS: params.nspace || defaultNspace,
        DestinationNS: params.nspace || defaultNspace,
        SourcePartition: params.partition || defaultPartition,
        DestinationPartition: params.partition || defaultPartition,
        Datacenter: params.dc,
        Partition: params.partition,
      });
    } else {
      item = super.findBySlug(...arguments);
    }
    return item;
  }

  @dataSource('/:partition/:ns/:dc/intentions/for-service/:id')
  async findByService(params, configuration = {}) {
    const query = {
      dc: params.dc,
      nspace: params.nspace,
      filter: `SourceName == "${params.id}" or DestinationName == "${params.id}" or SourceName == "*" or DestinationName == "*"`,
    };
    if (typeof configuration.cursor !== 'undefined') {
      query.index = configuration.cursor;
      query.uri = configuration.uri;
    }
    return this.store.query(this.getModelName(), query);
  }
}