import {ChangeDetectorRef, Component, OnDestroy, OnInit, ViewRef} from '@angular/core';
import {ActivatedRoute, Params, Router} from '@angular/router';
import {DomSanitizer, Meta, Title} from '@angular/platform-browser';
import {EnvProperties} from '../openaireLibrary/utils/properties/env-properties';

import {PiwikService} from '../openaireLibrary/utils/piwik/piwik.service';
import {StringUtils} from '../openaireLibrary/utils/string-utils.class';

import {ErrorCodes} from '../openaireLibrary/utils/properties/errorCodes';
import {ErrorMessagesComponent} from '../openaireLibrary/utils/errorMessages.component';
import {HelperService} from "../openaireLibrary/utils/helper/helper.service";
import {SEOService} from "../openaireLibrary/sharedComponents/SEO/SEO.service";
import {StakeholderService} from "../openaireLibrary/monitor/services/stakeholder.service";
import {Category, ChartHelper, IndicatorPath, Stakeholder, SubCategory, Topic} from "../openaireLibrary/monitor/entities/stakeholder";
import {StatisticsService} from "../utils/services/statistics.service";
import {IndicatorUtils, StakeholderUtils} from "../utils/indicator-utils";
import {LayoutService} from "../openaireLibrary/dashboard/sharedComponents/sidebar/layout.service";
import {FormBuilder, FormControl} from "@angular/forms";
import {IDeactivateComponent} from "../openaireLibrary/utils/can-exit.guard";
import {Subscription} from "rxjs";
import {Session, User} from "../openaireLibrary/login/utils/helper.class";
import {MenuItem} from "../openaireLibrary/sharedComponents/menu";
import {UserManagementService} from "../openaireLibrary/services/user-management.service";
import {StakeholderCreator} from "../utils/entities/stakeholderCreator";

@Component({
  selector: 'monitor',
  templateUrl: 'monitor.component.html',
  styleUrls:['monitor.component.css']
})
export class MonitorComponent implements OnInit, OnDestroy, IDeactivateComponent {
  private static sidebarStatus: {
    id;
    status;
  };
  public user: User;
  public userMenuItems: MenuItem[] = [new MenuItem("", "My profile", "", "", false, [], [], {})];
  public subscriptions: any[] = [];
  public piwiksub: any;
  public pageContents = null;
  public divContents = null;
  public status: number;
  public loading: boolean = true;
  public isViewPublic: boolean = false;
  public indicatorUtils: IndicatorUtils = new IndicatorUtils();
  public stakeholderUtils: StakeholderUtils = new StakeholderUtils();
  public activeTopic: Topic = null;
  public activeCategory: Category = null;
  public activeSubCategory: SubCategory = null;
  public sideBarItems: MenuItem[] = [];
  public topBarItems: MenuItem[] = [];
  public errorCodes: ErrorCodes;
  public stakeholder: Stakeholder;
  public numberResults: Map<string, number> = new Map<string, number>();
  public chartsActiveType: Map<string, IndicatorPath> = new Map<string, IndicatorPath>();
  private errorMessages: ErrorMessagesComponent;
  properties: EnvProperties;
  fundingL0;
  startYear;
  endYear;
  privateStakeholder = false;
  public keyword: FormControl;
  
  constructor(
    private route: ActivatedRoute,
    private _router: Router,
    private _meta: Meta,
    private _title: Title,
    private _piwikService: PiwikService,
    private helper: HelperService,
    private stakeholderService: StakeholderService,
    private userManagementService: UserManagementService,
    private statisticsService: StatisticsService,
    private layoutService: LayoutService,
    private seoService: SEOService,
    private cdr: ChangeDetectorRef,
    private sanitizer: DomSanitizer, private _fb: FormBuilder) {
    this.errorCodes = new ErrorCodes();
    this.errorMessages = new ErrorMessagesComponent();
    this.status = this.errorCodes.LOADING;
  }
  
  public ngOnInit() {
    this.keyword = this._fb.control('');
    this.keyword.valueChanges.subscribe(value => {
      console.log("Keyword Changed!");
      //TODO do a real action
    });
    this.route.data
      .subscribe((data: { envSpecific: EnvProperties }) => {
        let subscription: Subscription;
        this.subscriptions.push(this.userManagementService.getUserInfo().subscribe(user => {
          this.user = user;

          this.route.params.subscribe(params => {
            this.loading = true;
            this.activeTopic = null;
            this.activeCategory = null;
            this.activeSubCategory = null;

            if (subscription) {
              subscription.unsubscribe();
            }
            this.properties = data.envSpecific;
            var url = data.envSpecific.baseLink + this._router.url;
            this.route.queryParams.subscribe(params => {
              this.isViewPublic = (params['view'] == 'public');
            });
            this.buildMenu();

            if (!this.stakeholder || this.stakeholder.alias !== params['stakeholder']) {
              this.status = this.errorCodes.LOADING;
              this.numberResults = new Map<string, number>();
              this.chartsActiveType = new Map<string, IndicatorPath>();
              subscription = this.stakeholderService.getStakeholderAsObservable().subscribe(stakeholder => {
                if (stakeholder) {
                  this.stakeholder = stakeholder;
                  if(stakeholder.isActive && (stakeholder.isPublic || this.isAdmin())) {
                    this.seoService.createLinkForCanonicalURL(url, false);
                    this._meta.updateTag({content: url}, "property='og:url'");
                    var description = "Monitor Dashboard | " + this.stakeholder.name;
                    var title = "Monitor Dashboard | " + this.stakeholder.name;
                    this._meta.updateTag({content: description}, "name='description'");
                    this._meta.updateTag({content: description}, "property='og:description'");
                    this._meta.updateTag({content: title}, "property='og:title'");
                    this._title.setTitle(title);
                    if (this.properties.enablePiwikTrack && (typeof document !== 'undefined')) {
                      this.piwiksub = this._piwikService.trackView(this.properties, title, this.properties.piwikSiteId).subscribe();
                    }
                    //this.getDivContents();
                    this.getPageContents();
                    this.status = this.errorCodes.DONE;
                    this.setView(params);
                    this.layoutService.setOpen(true);
                  } else {
                    this.privateStakeholder = true;
                    // this.navigateToError();
                    if(subscription) {
                      subscription.unsubscribe();
                    }
                  }
                }
              });
              this.subscriptions.push(subscription);
            } else {
              this.setView(params);
            }
          });
        }));
      });
  }
  
  canExit() {
    if (this.sideBarItems.length > 0) {
      let status = [];
      this.sideBarItems.forEach(item => {
        status.push(item.open);
      });
      MonitorComponent.sidebarStatus = {
        id: this.activeTopic.alias,
        status: status
      };
    }
    return true;
  }
  
  public get open() {
    return this.layoutService.open;
  }
  
  private getPageContents() {
    this.helper.getPageHelpContents(this.properties, 'monitor', this._router.url).subscribe(contents => {
      this.pageContents = contents;
    })
  }
  
  private getDivContents() {
    this.helper.getDivHelpContents(this.properties, 'monitor', this._router.url).subscribe(contents => {
      this.divContents = contents;
    })
  }
  
  private setView(params: Params) {
    if (params['topic']) {
      this.activeTopic = this.stakeholder.topics.find(topic => topic.alias === decodeURIComponent(params['topic']) && this.isPublicOrIsMember(topic.isPublic) && topic.isActive);
      if (this.activeTopic) {
        if (params['category']) {
          this.activeCategory = this.activeTopic.categories.find(category =>
            (category.alias === params['category']) && this.isPublicOrIsMember(category.isPublic) && category.isActive);
          if (!this.activeCategory) {
            this.navigateToError();
            return;
          }
        } else {
          this.activeCategory = this.activeTopic.categories.find(category => this.isPublicOrIsMember(category.isPublic) && category.isActive);
          if (this.activeCategory) {
            this.activeSubCategory = this.activeCategory.subCategories.find(subCategory =>
              this.isPublicOrIsMember(subCategory.isPublic) && subCategory.isActive);
            this.setSideBar();
            if (this.activeSubCategory) {
              this.setIndicators();
            }
          } else {
            this.setSideBar();
          }
          return;
        }
        if (this.activeCategory) {
          if (params['subCategory']) {
            this.activeSubCategory = this.activeCategory.subCategories.find(subCategory =>
              (subCategory.alias === params['subCategory'] && this.isPublicOrIsMember(subCategory.isPublic) && subCategory.isActive));
            if (!this.activeSubCategory) {
              this.navigateToError();
              return;
            }
          } else {
            this.activeSubCategory = this.activeCategory.subCategories.find(subCategory =>
              this.isPublicOrIsMember(subCategory.isPublic) && subCategory.isActive);
          }
          if (this.activeSubCategory) {
            this.setSideBar();
            this.setIndicators();
          } else {
            this.navigateToError();
          }
          return;
        } else {
          this.activeSubCategory = null;
        }
      } else {
        this.navigateToError();
        return;
      }
    } else {
      this.activeTopic = this.stakeholder.topics.find(topic => this.isPublicOrIsMember(topic.isPublic) && topic.isActive);
      if (this.activeTopic) {
        this.activeCategory = this.activeTopic.categories.find(category => this.isPublicOrIsMember(category.isPublic) && category.isActive);
        if (this.activeCategory) {
          this.activeSubCategory = this.activeCategory.subCategories.find(subCategory => this.isPublicOrIsMember(subCategory.isPublic) && subCategory.isActive);
          if (this.activeSubCategory) {
            this.setSideBar();
            this.setIndicators();
          // } else {
            // this.navigateToError();
          }
        // } else {
          // this.navigateToError();
        }
      // } else {
        // this.navigateToError();
      }
    }
  }
  
  private setSideBar() {
    let items: MenuItem[] = [];
    this.stakeholder.topics.forEach((topic) => {
      if (this.isPublicOrIsMember(topic.isPublic) && topic.isActive) {
        let topicItem: MenuItem = new MenuItem(topic.alias, topic.name, "", (
          '/' + this.stakeholder.alias + '/' + topic.alias ),
          null, [], [], {});
         topicItem.icon = topic.icon;
        items.push(topicItem);
        }
    });
    let categoryItems: MenuItem[] = [];
    this.activeTopic.categories.forEach((category, index) => {
      if (this.isPublicOrIsMember(category.isPublic) && category.isActive) {
        let subItems: MenuItem[] = [];
        /*category.subCategories.forEach(subCategory => {
          if (this.isPublicOrIsMember(subCategory.isPublic) && subCategory.isActive) {
            subItems.push(new MenuItem(subCategory.alias, subCategory.name, "", (
              '/' + this.stakeholder.alias + '/' + this.activeTopic.alias + '/' + category.alias + '/' + subCategory.alias),
              null, null, [], {}));
          }
        });*/
        let open = this.activeCategory.alias === category.alias;
        if (MonitorComponent.sidebarStatus && MonitorComponent.sidebarStatus.id === this.activeTopic.alias) {
          open = MonitorComponent.sidebarStatus.status[index];
        }
        //  constructor(id: string, title: string, url: string, route: string, needsAuthorization: boolean, entitiesRequired: string[], routeRequired: string[], params) {
        let categoryItem: MenuItem = new MenuItem(category.alias, category.name, "", (
          '/' + this.stakeholder.alias + '/' + this.activeTopic.alias + '/' + category.alias),
          null, [], [], {});
        categoryItem.items = subItems;
        categoryItem.open = open;
        categoryItems.push(categoryItem);
      }
    });
    this.topBarItems = categoryItems;
    if (items.length === 0) {
      items.push(new MenuItem('noCategories', 'No categories available yet', "", "", false, [], [], {}));
    }
    this.sideBarItems = items;
    this.loading = false;
  }
  
  private setIndicators() {
    let urls: Map<string, [number, number][]> = new Map<string, [number, number][]>();
    this.activeSubCategory.numbers.forEach((section, i) => {
      section.indicators.forEach((number, j) => {
        if (number.isActive && this.isPublicOrIsMember(number.isPublic)) {
          let url = number.indicatorPaths[0].url;
          //add fundingLevel0 filter in the query
          if (this.fundingL0 && number.indicatorPaths[0].filters.get("fundingL0")) {
            url = url + number.indicatorPaths[0].filters.get("fundingL0").replace(ChartHelper.prefix + 'fundingL0' + ChartHelper.suffix, encodeURIComponent(this.fundingL0));
          }
          const pair = JSON.stringify([number.indicatorPaths[0].source, url]);
          const indexes = urls.get(pair) ? urls.get(pair) : [];
          indexes.push([i, j]);
          urls.set(pair, indexes);
        }
      });
    });
    urls.forEach((indexes, pair) => {
      pair = JSON.parse(pair);
      this.statisticsService.getNumbers(pair[0], IndicatorUtils.getNumberUrl(this.stakeholder, pair[1])).subscribe(response => {
        indexes.forEach(([i, j]) => {
          let result = JSON.parse(JSON.stringify(response));
          this.activeSubCategory.numbers[i].indicators[j].indicatorPaths[0].jsonPath.forEach(jsonPath => {
            if (result) {
              result = result[jsonPath];
            }
          });
          this.numberResults.set(i + '-' + j, result);
        });
      })
    });
    this.activeSubCategory.charts.forEach((section, i) => {
      section.indicators.forEach((indicator, j) => {
        if (indicator.indicatorPaths.length > 0) {
          indicator.indicatorPaths[0].safeResourceUrl = this.getUrlByStakeHolder(indicator.indicatorPaths[0]);
          this.chartsActiveType.set(i + '-' + j, indicator.indicatorPaths[0]);
        }
      });
    });
    if (this.cdr && !(this.cdr as ViewRef).destroyed) {
      this.cdr.detectChanges();
    }
  }
  
  public getUrlByStakeHolder(indicatorPath: IndicatorPath) {
    return this.sanitizer.bypassSecurityTrustResourceUrl(
      this.statisticsService.getChartUrl(indicatorPath.source, this.indicatorUtils.getFullUrl(this.stakeholder, indicatorPath, this.fundingL0, this.startYear, this.endYear)));
  }
  
  public setActiveChart(i: number, j: number, type: string) {
    let activeChart = this.activeSubCategory.charts[i].indicators[j].indicatorPaths.filter(indicatorPath => indicatorPath.type === type)[0];
    activeChart.safeResourceUrl = this.getUrlByStakeHolder(activeChart);
    this.chartsActiveType.set(i + '-' + j, activeChart);
  }
  
  private navigateToError() {
    this._router.navigate(['/error'], {queryParams: {'page': this._router.url}});
  }
  
  public navigateTo(stakeholder: string, topic: string, category: string = null, subcategory: string = null) {
    let url = stakeholder + '/' + topic + ((category) ? ('/'
      + category) : '') + ((subcategory) ? ('/' + subcategory) : '');
    return this._router.navigate([url]);
  }
  
  public quote(param: string): string {
    return StringUtils.quote(param);
  }
  
  public ngOnDestroy() {
    if (this.piwiksub) {
      this.piwiksub.unsubscribe();
    }
  }
  
  buildMenu() {
    this.userMenuItems = [];
    // if (Session.isPortalAdministrator(this.user)) {
    //   this.userMenuItems.push(new MenuItem("", "Manage helptexts",
    //     ((this.properties.environment == "beta") ? "https://beta.admin.connect.openaire.eu" : "https://admin.explore.openaire.eu") + "/dashboard?communityId=openaire", "", true, [], [], {}))
    //
    // }
    if (this.user) {
      this.userMenuItems.push(new MenuItem("", "Manage profiles", "", "/admin", false, [], [], {}));
    }
    if (this.user) {
      this.userMenuItems.push(new MenuItem("", "User information", "", "/user-info", false, [], [], {}));
    }
  }

  isAdmin(){
    return this.user && (Session.isPortalAdministrator(this.user) || Session.isCommunityCurator(this.user) || Session.isMonitorCurator(this.user));
  }

  isLoggedIn() {
    return this.user;
  }

  public isPublicOrIsMember(isPublic: boolean): boolean {
    if (isPublic) {
      return true;
    } else {
      if (this.isViewPublic) { // preview for not members
        return false;
      } else if(this.user) {
        // if user is member, return true
        return true;
      }
      return false;
    }
  }
}