import Serializer from './application';
import { PRIMARY_KEY, SLUG_KEY } from 'consul-ui/models/service';
import { get } from '@ember/object';
import {
  HEADERS_NAMESPACE as HTTP_HEADERS_NAMESPACE,
  HEADERS_PARTITION as HTTP_HEADERS_PARTITION,
} from 'consul-ui/utils/http/consul';

export default class ServiceSerializer extends Serializer {
  primaryKey = PRIMARY_KEY;
  slugKey = SLUG_KEY;

  respondForQuery(respond, query) {
    return super.respondForQuery(
      (cb) =>
        respond((headers, body) => {
          // Services and proxies all come together in the same list. Here we
          // map the proxies to their related services on a Service.Proxy
          // property for easy access later on
          return cb(headers, this._transformServicesPayload(body));
        }),
      query
    );
  }

  respondForQueryRecord(respond, query) {
    // Name is added here from the query, which is used to make the uid
    // Datacenter gets added in the ApplicationSerializer
    return super.respondForQueryRecord(
      (cb) =>
        respond((headers, body) => {
          return cb(headers, {
            Name: query.id,
            Namespace: get(body, 'firstObject.Service.Namespace'),
            Nodes: body,
          });
        }),
      query
    );
  }

  createJSONApiDocumentFromServicesPayload(headers, responseBody, dc) {
    const { primaryKey, slugKey, fingerprint } = this;

    const transformedBody = this._transformServicesPayload(responseBody);
    const attributes = transformedBody.map(
      fingerprint(
        primaryKey,
        slugKey,
        dc,
        headers[HTTP_HEADERS_NAMESPACE],
        headers[HTTP_HEADERS_PARTITION]
      )
    );

    return {
      data: attributes.map((attr) => {
        return {
          id: attr.uid,
          type: 'service',
          attributes: attr,
        };
      }),
    };
  }

  _transformServicesPayload(body) {
    const services = {};
    body
      .filter(function (item) {
        return item.Kind !== 'connect-proxy';
      })
      .forEach((item) => {
        services[item.Name] = item;
      });
    body
      .filter(function (item) {
        return item.Kind === 'connect-proxy';
      })
      .forEach((item) => {
        // Iterating to cover the usecase of a proxy being used by more
        // than one service
        if (item.ProxyFor) {
          item.ProxyFor.forEach((service) => {
            if (typeof services[service] !== 'undefined') {
              services[service].Proxy = item;
            }
          });
        }
      });
    return body;
  }
}