import Ember from 'ember';
import ApplicationSerializer from './application';
import queryString from 'npm:query-string';

const { get, assign } = Ember;

export default ApplicationSerializer.extend({
  attrs: {
    parameterized: 'ParameterizedJob',
  },

  normalize(typeHash, hash) {
    hash.NamespaceID = hash.Namespace;

    // ID is a composite of both the job ID and the namespace the job is in
    hash.PlainId = hash.ID;
    hash.ID = JSON.stringify([hash.ID, hash.NamespaceID || 'default']);

    // Transform the map-based JobSummary object into an array-based
    // JobSummary fragment list
    hash.TaskGroupSummaries = Object.keys(get(hash, 'JobSummary.Summary') || {}).map(key => {
      const allocStats = get(hash, `JobSummary.Summary.${key}`) || {};
      const summary = { Name: key };

      Object.keys(allocStats).forEach(
        allocKey => (summary[`${allocKey}Allocs`] = allocStats[allocKey])
      );

      return summary;
    });

    // Lift the children stats out of the JobSummary object
    const childrenStats = get(hash, 'JobSummary.Children');
    if (childrenStats) {
      Object.keys(childrenStats).forEach(
        childrenKey => (hash[`${childrenKey}Children`] = childrenStats[childrenKey])
      );
    }

    return this._super(typeHash, hash);
  },

  extractRelationships(modelClass, hash) {
    const namespace =
      !hash.NamespaceID || hash.NamespaceID === 'default' ? undefined : hash.NamespaceID;
    const { modelName } = modelClass;

    const jobURL = this.store
      .adapterFor(modelName)
      .buildURL(modelName, hash.PlainId, hash, 'findRecord');

    return assign(this._super(...arguments), {
      allocations: {
        links: {
          related: buildURL(`${jobURL}/allocations`, { namespace: namespace }),
        },
      },
      versions: {
        links: {
          related: buildURL(`${jobURL}/versions`, { namespace: namespace, diffs: true }),
        },
      },
      deployments: {
        links: {
          related: buildURL(`${jobURL}/deployments`, { namespace: namespace }),
        },
      },
      evaluations: {
        links: {
          related: buildURL(`${jobURL}/evaluations`, { namespace: namespace }),
        },
      },
    });
  },
});

function buildURL(path, queryParams) {
  const qpString = queryString.stringify(queryParams);
  if (qpString) {
    return `${path}?${qpString}`;
  }
  return path;
}