import { AsyncPipe, LowerCasePipe, NgClass, NgForOf, NgIf, NgOptimizedImage, DOCUMENT } from '@angular/common';
import { Component, OnDestroy, OnInit, Inject } from '@angular/core';
import { ReactiveFormsModule } from '@angular/forms';
import { ActivatedRoute, QueryParamsHandling, Router, RouterLink } from '@angular/router';
import { LocalizeRouterPipe } from '@gilsdav/ngx-translate-router';
import { TranslatePipe } from '@ngx-translate/core';
import { Subscription } from 'rxjs';
import { switchMap } from 'rxjs/operators';
import { toggleHorizontally, toggleVertically } from '@app/animations';
import { DatasetItemResultsComponent } from '@app/pages/dataset/dataset-item-results/dataset-item-results.component';
import { DatasetMetadataComponent } from '@app/pages/dataset/dataset-metadata/dataset-metadata.component';
import { DatasetRestrictionsComponent } from '@app/pages/dataset/dataset-restrictions/dataset-restrictions.component';
import { ResourceListComponent } from '@app/pages/dataset/resource-list/resource-list.component';
import { ApiModel } from '@app/services/api/api-model';
import { DatasetService } from '@app/services/dataset.service';
import { ListViewDetailsService } from '@app/services/list-view-details.service';
import { ListViewFiltersService } from '@app/services/list-view-filters.service';
import { IDatasetRegionsList } from '@app/services/models/dataset-resource';
import { IDownloadFile } from '@app/services/models/download-item';
import { PageParams } from '@app/services/models/page-params';
import { SchemaDataService } from '@app/services/schema-data.service';
import { SchemaService } from '@app/services/schema.service';
import { SeoService } from '@app/services/seo.service';
import { ApiSourceLinkComponent } from '@app/shared/api-source-link/api-source-link.component';
import { CollapsibleTextComponent } from '@app/shared/collapsible-text/collapsible-text.component';
import { FixedSidebarDirective } from '@app/shared/directives/fixed-sidebar.directive';
import { LinkHelper } from '@app/shared/helpers';
import { HistoryEntryComponent } from '@app/shared/history-entry/history-entry.component';
import { InfoTooltipDirective } from '@app/shared/info-tooltip/info-tooltip.directive';
import { ItemsPerPageComponent } from '@app/shared/items-per-page/items-per-page.component';
import { NotificationsServerComponent } from '@app/shared/notifications-server/notifications-server.component';
import { PaginationComponent } from '@app/shared/pagination/pagination.component';
import { TranslateDateFormatPipe } from '@app/shared/pipes/translate-date-format.pipe';
import { SubscribeButtonComponent } from '@app/shared/subscribe-button/subscribe-button.component';
import { TooltipDirective } from '@app/shared/tooltip/tooltip.directive';
import { getEventValue } from '@app/shared/util';

/**
 * Dataset Item Component
 */
@Component({
  templateUrl: './dataset-item.component.html',
  animations: [toggleHorizontally, toggleVertically],
  standalone: true,
  imports: [
    NgIf,
    DatasetMetadataComponent,
    CollapsibleTextComponent,
    NgOptimizedImage,
    InfoTooltipDirective,
    TranslatePipe,
    NgForOf,
    NgClass,
    FixedSidebarDirective,
    RouterLink,
    LocalizeRouterPipe,
    TranslateDateFormatPipe,
    AsyncPipe,
    NotificationsServerComponent,
    SubscribeButtonComponent,
    LowerCasePipe,
    TooltipDirective,
    ReactiveFormsModule,
    ResourceListComponent,
    ItemsPerPageComponent,
    PaginationComponent,
    DatasetRestrictionsComponent,
    HistoryEntryComponent,
    ApiSourceLinkComponent,
    DatasetItemResultsComponent,
  ],
})
export class DatasetItemComponent implements OnInit, OnDestroy {
  /**
   * @ignore
   */
  constructor(
    private activatedRoute: ActivatedRoute,
    private filterService: ListViewFiltersService,
    private router: Router,
    private datasetService: DatasetService,
    private seoService: SeoService,
    private schemaService: SchemaService,
    private schemaDataService: SchemaDataService,
    private listViewDetailsService: ListViewDetailsService,
    @Inject(DOCUMENT) private readonly document: Document,
  ) {}
  /**
   * API model
   */
  apiModel = ApiModel;

  /**
   * Sidebar visibility indicator
   */
  sidebarVisible = true;

  /**
   * Self api of dataset item component
   */
  selfApi: string;

  /**
   * Basic params of dataset item component
   */
  basicParams = {
    page: 1,
    per_page: 20,
    sort: '-data_date',
  };

  /**
   * Page setting based on basic params and user interactions for resources table
   */
  params = { ...this.basicParams, include: this.apiModel.INSTITUTION };

  /**
   * Page setting based on basic params and user interactions for showcase table
   */
  paramsShowcases = this.basicParams;

  /**
   * Dataset of dataset item component
   */
  dataset: any;

  /**
   * Institution  of dataset
   */
  institution: any;

  /**
   * Resources subscription
   */
  resourcesSubscription: Subscription;

  /**
   * Showcases subscription
   */
  showcasesSubscription: Subscription;

  /**
   * Resources  of dataset
   */
  resources: any[];

  /**
   * Resources count
   */
  resourcesCount: number;

  /**
   * Showcases count
   */
  showcasesCount: number;

  /**
   * History actions list
   */
  history: any[] = [];

  /**
   * History actions - current page
   */
  historyPageNumber = 1;

  /**
   * Total number of history actions
   */
  historyTotal: number;

  /**
   * Active tab index
   */
  activeTabIndex = 1;

  /**
   * Keywords - coma separated string
   */
  keywords = '';

  /**
   * Sort options
   */
  sortOptions: { labelTranslationKey: string; value: string }[] = [
    { labelTranslationKey: 'Attribute.NameAsc', value: 'title' },
    { labelTranslationKey: 'Attribute.NameDesc', value: '-title' },
    { labelTranslationKey: 'Attribute.AvailabilityDate', value: '-created' },
    { labelTranslationKey: 'Attribute.PopularityAsc', value: 'views_count' },
    { labelTranslationKey: 'Attribute.PopularityDesc', value: '-views_count' },
  ];

  /**
   * Determines whether sort value is valid
   */
  isSortValid: boolean;

  /**
   * Determines whether user can download zip file
   */
  isExistsZipFileForDownload: boolean;

  /**
   * Items (related showcases)
   */
  items: any[] = [];

  regionsList: IDatasetRegionsList[];

  /**
   * Current state - is not expanded
   */
  isExpanded = false;

  /**
   * Current supplement state - is not expanded
   */
  isSupplementExpanded = false;

  /**
   * Show container if exist regions without Poland
   */
  isNotRegionPoland: boolean;

  currentUrl = this.document.location.href;

  protected readonly getValue = getEventValue;

  /**
   * Sets META tags (title, description).
   * Initializes dataset,its institution and history.
   * Initializes and updates list of items (resources) on query params change.
   */
  ngOnInit() {
    const { data: dataset, included: datasetRelated } = this.activatedRoute.snapshot.data['post'];

    if (Array.isArray(dataset.attributes.keywords)) {
      this.keywords = (dataset.attributes.keywords as []).join(', ');
    }

    this.dataset = dataset;
    this.selfApi = this.dataset.links.self;
    this.isExistsZipFileForDownload = !!this.dataset.attributes.archived_resources_files_url;

    this.regionsList = this.dataset.attributes.regions.filter((region) => region.is_additional === false);
    this.isNotRegionPoland = this.regionsList.filter((region) => region.region_id !== '85633723').length > 0;

    if (this.dataset.attributes.source && this.dataset.attributes.source.type === 'ckan') {
      this.basicParams.sort = '-created';
    } else {
      this.sortOptions.splice(3, 0, { labelTranslationKey: 'Attribute.DataDate', value: '-data_date' });
    }

    this.seoService.setPageTitle(this.dataset.attributes.title);
    this.seoService.setDescriptionFromText(this.dataset.attributes.notes);

    this.schemaDataService.getDatasetStructuredData(this.dataset.id).subscribe((data) => {
      this.schemaService.addStructuredData(data);
    });

    this.institution = datasetRelated.find((item) => item.type === this.apiModel.INSTITUTION);

    this.resourcesSubscription = this.activatedRoute.queryParamMap
      .pipe(
        switchMap((qParamMap) => {
          if (qParamMap.get('model') === 'resources' || qParamMap.get('model') === null) {
            this.params = {
              page: +qParamMap.get('page') || this.basicParams['page'],
              per_page: +qParamMap.get('per_page') || this.basicParams['per_page'],
              sort: qParamMap.get('sort') || this.basicParams['sort'],
              include: this.apiModel.INSTITUTION,
            };

            return this.datasetService.getResourcesList(this.dataset.id, this.params);
          } else {
            this.params = {
              page: this.params['page'],
              per_page: this.params['per_page'],
              sort: this.params['sort'],
              include: this.apiModel.INSTITUTION,
            };

            return this.datasetService.getResourcesList(this.dataset.id, this.params);
          }
        }),
      )
      .subscribe((response) => {
        this.resources = response.results;
        this.resourcesCount = response.count;
        this.isSortValid = !!this.sortOptions.find((option) => option.value === this.params.sort);
      });

    if (this.dataset.relationships.showcases.meta.count > 0) {
      this.showcasesSubscription = this.activatedRoute.queryParamMap
        .pipe(
          switchMap((qParamMap) => {
            if (qParamMap.get('model') === 'showcases' || qParamMap.get('model') === null) {
              this.paramsShowcases = {
                page: +qParamMap.get('page') || this.basicParams['page'],
                per_page: +qParamMap.get('per_page') || this.basicParams['per_page'],
                sort: qParamMap.get('sort') || this.basicParams['sort'],
              };
              return this.datasetService.getShowcasesList(this.dataset.id, this.paramsShowcases);
            } else {
              this.paramsShowcases = {
                page: this.paramsShowcases['page'],
                per_page: this.paramsShowcases['per_page'],
                sort: this.paramsShowcases['sort'],
              };
              return this.datasetService.getShowcasesList(this.dataset.id, this.paramsShowcases);
            }
          }),
        )
        .subscribe((showcases) => {
          showcases.results.forEach((data) => {
            data.attributes.model = 'showcase';
          });
          const results = showcases.results ? showcases.results : [];
          this.items = this.listViewDetailsService.extendViewDetails(results);
          this.showcasesCount = showcases.count;
          this.isSortValid = !!this.sortOptions.find((option) => option.value === this.paramsShowcases.sort);
        });
    }

    this.loadHistory(this.historyPageNumber);
  }

  /**
   * Loads dataset history actions
   * @param {number} page
   */
  public loadHistory(page: number) {
    this.historyPageNumber = page;

    this.datasetService.getHistoryById(this.dataset.id, page).subscribe((history) => {
      this.historyTotal = history.meta.count;
      this.history = this.history.concat(history.data);
    });
  }

  /**
   * Updates query params on every user interaction
   * @param {PageParams} params
   * @param {QueryParamsHandling | null} method
   */
  updateParams(params: PageParams, model: string, method: QueryParamsHandling | null = 'merge') {
    let updatedBasicParams;
    switch (model) {
      case 'resources':
        updatedBasicParams = this.filterService.updateBasicParams(this.params, this.basicParams);
        break;
      case 'showcases':
        updatedBasicParams = this.filterService.updateBasicParams(this.paramsShowcases, this.basicParams);
        break;
    }

    if (!('page' in params)) {
      params['page'] = 1;
    }

    this.router.navigate([], {
      queryParams: {
        ...updatedBasicParams,
        ...params,
        model,
      },
      queryParamsHandling: method,
    });
  }

  /**
   * Increments download counter and initializes resource (file) download
   * @param {IDownloadFile} file
   */
  downloadResource(file: IDownloadFile) {
    LinkHelper.downloadResource(file);
  }

  /**
   * Unsubscribe from existing subscriptions
   */
  ngOnDestroy() {
    this.resourcesSubscription.unsubscribe();
    if (this.showcasesSubscription) {
      this.showcasesSubscription.unsubscribe();
    }
  }
}
