/**
* @license
* Copyright (C) 2017-2018 "IoT.bzh"
* Author Sebastien Douheret <sebastien@iot.bzh>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
*   http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/

import { Component, OnInit, Input } from '@angular/core';
import { Observable } from 'rxjs/Observable';
import { Subject } from 'rxjs/Subject';
import { NbThemeService } from '@nebular/theme';
import { DomSanitizer, SafeResourceUrl } from '@angular/platform-browser';

import { SupervisionService } from '../../@core-xds/services/supervision.service';
import { AlertService } from '../../@core-xds/services/alert.service';

export interface GrafanaDashboard {
  name: string;
  shortname: string;
  url?: string;
  safeUrl?: SafeResourceUrl;
}

export interface GrafanaPanel {
  name: string;
  index: string;
  url?: string;
  safeUrl?: SafeResourceUrl;
}

@Component({
  selector: 'xds-supervision',
  styleUrls: ['./supervision.component.scss'],
  templateUrl: './supervision.component.html',
})

export class SupervisionComponent implements OnInit {

  @Input() theme = 'light';
  @Input() tm_from = 1528988550450;
  @Input() tm_to = 1528988842496;
  @Input() scroll_factor = 10000;
  @Input() zoom_factor = 100000;

  displayMode = 'dashboard';

  private dashboards: Map<string, GrafanaDashboard> = new Map<string, GrafanaDashboard>([
    ['xds_supervisor', { name: 'AGL XDS Supervisor', shortname: 'agl-xds-supervisor' }],
  ]);

  private panels: Map<string, GrafanaPanel> = new Map<string, GrafanaPanel>([
    ['table', { name: 'Supervisor traces table', index: '2' }],
    ['evt_data_bytes', { name: 'Requests & Events per second', index: '5' }],
    ['req_evts_per_sec', { name: 'Events Data bytes', index: '12' }],
  ]);

  constructor(
    private supervisionSvr: SupervisionService,
    private alert: AlertService,
    private themeService: NbThemeService,
    private sanitizer: DomSanitizer,
  ) {
  }

  ngOnInit() {
    this._initDashboard();
    this._initPanels();

    this.themeService.onThemeChange().subscribe(tm => {
      this.theme = (tm.name === 'cosmic') ? 'dark' : 'light';
      this.themeUpdate();
    });
  }

  getDashboard(name: string): SafeResourceUrl {
    return this.dashboards.get(name).safeUrl;
  }

  getPanel(name: string): SafeResourceUrl {
    return this.panels.get(name).safeUrl;
  }

  displayModeChange() {
    if (this.displayMode === 'dashboard') {
      this.displayMode = 'panels';
    } else {
      this.displayMode = 'dashboard';
    }
  }

  themeUpdate() {
    this._initDashboard();
    this._initPanels();
  }

  timeChange(val: number) {
    this.tm_from += val * this.scroll_factor;
    this.tm_to += val * this.scroll_factor;
    this._initPanels();
  }

  zoomOut() {
    this.tm_from -= this.zoom_factor;
    this.tm_to += this.zoom_factor;
    this._initPanels();
  }


  private _initDashboard() {
    this.dashboards.forEach(dd => {
      dd.url = this._buildDashboardUrl(dd.shortname, this.tm_from, this.tm_to, this.theme);
      dd.safeUrl = this.sanitizer.bypassSecurityTrustResourceUrl(dd.url);
    });
  }
  private _initPanels() {
    this.panels.forEach(gg => {
      gg.url = this._buildPanelUrl(gg.index, this.tm_from, this.tm_to, this.theme);
      gg.safeUrl = this.sanitizer.bypassSecurityTrustResourceUrl(gg.url);
    });
  }

  private _buildDashboardUrl(sname: string, from: number, to: number, theme: string) {
    let url = 'http://localhost:3000/d/Lbpwc6Iiz/' + sname;
    url += '?orgId=1';
    url += '&from=' + from;
    url += '&to=' + to;
    url += '&theme=' + theme;
    return url;
  }

  private _buildPanelUrl(idx: string, from: number, to: number, theme: string) {
    let url = 'http://localhost:3000/d-solo/Lbpwc6Iiz/agl-xds-supervisor';
    url += '?panelId=' + idx;
    url += '&orgId=1';
    url += '&from=' + from;
    url += '&to=' + to;
    url += '&theme=' + theme;
    url += '&sidemenu=close';
    return url;
  }
}