grafana/public/app/features/playlist/playlistSrv.ts

///<reference path="../../headers/common.d.ts" />

import angular from 'angular';
import coreModule from '../../core/core_module';
import kbn from 'app/core/utils/kbn';

class PlaylistSrv {
  private cancelPromise: any
  private dashboards: any
  private index: number
  private interval: any
  private playlistId: number

  /** @ngInject */
  constructor(
    private $rootScope:any,
    private $location:any,
    private $timeout:any,
    private backendSrv:any) {
  }

  next() {
    this.$timeout.cancel(this.cancelPromise);

    angular.element(window).unbind('resize');

    if (this.index > this.dashboards.length -1) {
      this.start(this.playlistId);
    } else {
      var dash = this.dashboards[this.index];

      this.$location.url('dashboard/' + dash.uri);

      this.index++;
      this.cancelPromise = this.$timeout(() => { this.next(); }, this.interval);
    }
  }

  prevfunction() {
    this.index = Math.max(this.index - 2, 0);
    this.next();
  }

  start(playlistId) {
    this.stop();

    this.index = 0;
    this.playlistId = playlistId;

    this.$rootScope.playlistSrv = this;

    this.backendSrv.get('/api/playlists/' + playlistId)
      .then((playlist) => {
        this.backendSrv.get('/api/playlists/' + playlistId + '/dashboards')
          .then((dashboards) => {
            this.dashboards = dashboards;
            this.interval = kbn.interval_to_ms(playlist.interval);
            this.cancelPromise = this.$timeout(() => { this.next(); }, this.interval);

            this.next();
          });
      });
  }

  stop() {
    this.index = 0;
    this.playlistId = 0;

    if (this.cancelPromise) {
        this.$timeout.cancel(this.cancelPromise);
    }

    this.$rootScope.playlistSrv = null;
  }
}

coreModule.service('playlistSrv', PlaylistSrv)