import Service, { inject as service } from '@ember/service';
import { computed } from '@ember/object';
import PromiseObject from '../utils/classes/promise-object';
import { namespace } from '../adapters/application';

export default Service.extend({
  token: service(),
  store: service(),

  leader: computed(function() {
    const token = this.get('token');

    return PromiseObject.create({
      promise: token
        .authorizedRequest(`/${namespace}/status/leader`)
        .then(res => res.json())
        .then(rpcAddr => ({ rpcAddr }))
        .then(leader => {
          // Dirty self so leader can be used as a dependent key
          this.notifyPropertyChange('leader.rpcAddr');
          return leader;
        }),
    });
  }),

  namespaces: computed(function() {
    return this.get('store').findAll('namespace');
  }),

  shouldShowNamespaces: computed('namespaces.[]', function() {
    const namespaces = this.get('namespaces').toArray();
    return namespaces.length && namespaces.some(namespace => namespace.get('id') !== 'default');
  }),

  activeNamespace: computed('namespaces.[]', {
    get() {
      const namespaceId = window.localStorage.nomadActiveNamespace || 'default';
      const namespace = this.get('namespaces').findBy('id', namespaceId);

      if (namespace) {
        return namespace;
      }

      // If the namespace is localStorage is no longer in the cluster, it needs to
      // be cleared from localStorage
      this.set('activeNamespace', null);
      return this.get('namespaces').findBy('id', 'default');
    },
    set(key, value) {
      if (value == null) {
        window.localStorage.removeItem('nomadActiveNamespace');
      } else if (typeof value === 'string') {
        window.localStorage.nomadActiveNamespace = value;
        return this.get('namespaces').findBy('id', value);
      } else {
        window.localStorage.nomadActiveNamespace = value.get('name');
        return value;
      }
    },
  }),
});