import {ChangeDetectorRef, Component, Input} from '@angular/core';
import {ChangeDetectionStrategy} from '@angular/core';
import {ViewEncapsulation} from '@angular/core';
import {ActivatedRoute, Router} from '@angular/router';
import {Location} from '@angular/common';
import {Title, Meta} from '@angular/platform-browser';

import {FetchResearchResults} from '../../utils/fetchEntitiesClasses/fetchResearchResults.class';
import {FetchDataproviders} from '../../utils/fetchEntitiesClasses/fetchDataproviders.class';
import {FetchProjects} from '../../utils/fetchEntitiesClasses/fetchProjects.class';
import {FetchOrganizations} from '../../utils/fetchEntitiesClasses/fetchOrganizations.class';

import {SearchResearchResultsService} from '../../services/searchResearchResults.service';
import {SearchDataprovidersService} from '../../services/searchDataproviders.service';
import {SearchProjectsService} from '../../services/searchProjects.service';
import {SearchOrganizationsService} from '../../services/searchOrganizations.service';

import {SearchFields} from '../../utils/properties/searchFields';
import {ErrorCodes} from '../../utils/properties/errorCodes';
import {RouterHelper} from '../../utils/routerHelper.class';
import {RefineFieldResultsService} from '../../services/refineFieldResults.service';
import {PiwikService} from '../../utils/piwik/piwik.service';
import {ConfigurationService} from '../../utils/configuration/configuration.service';
import {EnvProperties} from '../../utils/properties/env-properties';
import {SEOService} from '../../sharedComponents/SEO/SEO.service';
import {StringUtils} from '../../utils/string-utils.class';
import {SearchCustomFilter} from "../searchUtils/searchUtils.class";
import {Observable} from "rxjs";
import {AdvancedField, Filter} from "../searchUtils/searchHelperClasses.class";

@Component({
  changeDetection: ChangeDetectionStrategy.Default,
  encapsulation: ViewEncapsulation.Emulated,
  selector: 'search-all',
  templateUrl: 'searchAll.component.html'
})
export class SearchAllComponent {
  public sub: any;
  piwiksub: any;
  // public reloadResults: boolean;
  // public reloadPublications: boolean;
  // public reloadDatasets: boolean;
  // public reloadSoftware: boolean;
  // public reloadOrps: boolean;
  // public reloadProjects: boolean;
  // public reloadDataproviders: boolean;
  // public reloadOrganizations: boolean;
  reload:{result:boolean, projects:boolean, datasources: boolean, organizations:boolean} = {result:true, projects:true, datasources: true, organizations:true};

  public pageTitle = "Search in OpenAIRE"
  public keyword: string = "";
  public publications: string[];
  public datasets: string[];
  public software: string[];
  public orps: string[];
  public projectsTab: string[];
  public dataproviders: string[];
  public organizations: string[];

  public activeEntity = null;
  public linkToSearchPublications = "";
  public linkToSearchProjects = "";
  public linkToSearchDataproviders = "";
  public linkToSearchDatasets = "";
  public linkToSearchSoftware = "";
  public linkToSearchOrps = "";
  public linkToSearchOrganizations = "";

  public fetchPublications: FetchResearchResults;
  public fetchDataproviders: FetchDataproviders;
  public fetchProjects: FetchProjects;
  public fetchDatasets: FetchResearchResults;
  public fetchSoftware: FetchResearchResults;
  public fetchOrps: FetchResearchResults;
  public fetchOrganizations: FetchOrganizations;

  public searchFields: SearchFields = new SearchFields();
  public errorCodes: ErrorCodes = new ErrorCodes();
  public routerHelper: RouterHelper = new RouterHelper();

  public publicationsSize: any = null;
  public datasetsSize: any = null;
  public softwareSize: any = null;
  public oprsSize: any = null;
  public fundersSize: any = null;
  public projectsSize: any = null;
  public datasourcesSize: any = null;
  showPublications: boolean = false;
  showDatasets: boolean = false;
  showSoftware: boolean = false;
  showOrps: boolean = false;
  showProjects: boolean = false;
  showDataProviders: boolean = false;
  showOrganizations: boolean = false;
  advancedSearchLink: string = "/search/advanced/publications";
  properties: EnvProperties;
  @Input() logoURL;
  @Input() name;
  @Input() customFilter: SearchCustomFilter = null;
  @Input() piwikSiteId = null;
  @Input() formPlaceholderText = "Search for research results, projects, content providers & organizations in OpenAIRE";


  public subPub;
  public subData;
  public subSoftware;
  public subOrps;
  public subProjects;
  public subOrg;
  public subDataPr;


  quickFilter: { filter: Filter, selected: boolean, filterId: string, value: string } = {
    filter: null,
    selected: true,
    filterId: "resultbestaccessright",
    value: "Open Access"
  };

  resultTypes = {publication: true, dataset: true, software: true, other: true};

  //adv Search Form
  public fieldIds: string[] = this.searchFields.RESULT_ADVANCED_FIELDS;
  public fieldIdsMap = this.searchFields.RESULT_FIELDS;
  public selectedFields: AdvancedField[] = [];

  //new
  parameters = {};
  disableForms: boolean = true;

  constructor(private route: ActivatedRoute,
              private _router: Router,
              private _searchResearchResultsService: SearchResearchResultsService,
              private _searchDataprovidersService: SearchDataprovidersService,
              private _searchProjectsService: SearchProjectsService,
              private _searchOrganizationsService: SearchOrganizationsService,
              private _refineFieldResultsService: RefineFieldResultsService,
              private location: Location,
              private _meta: Meta,
              private _title: Title,
              private _piwikService: PiwikService,
              private config: ConfigurationService,
              private seoService: SEOService, private router: Router, private cdr:ChangeDetectorRef) {
    this.fetchPublications = new FetchResearchResults(this._searchResearchResultsService);
    this.fetchDataproviders = new FetchDataproviders(this._searchDataprovidersService);
    this.fetchProjects = new FetchProjects(this._searchProjectsService);
    this.fetchDatasets = new FetchResearchResults(this._searchResearchResultsService);
    this.fetchSoftware = new FetchResearchResults(this._searchResearchResultsService);
    this.fetchOrps = new FetchResearchResults(this._searchResearchResultsService);
    this.fetchOrganizations = new FetchOrganizations(this._searchOrganizationsService);
    this.selectedFields.push(new AdvancedField(this.fieldIds[0], this.fieldIdsMap[this.fieldIds[0]].param, this.fieldIdsMap[this.fieldIds[0]].name, this.fieldIdsMap[this.fieldIds[0]].type, '', "and"));

  }

  public ngOnInit() {
    this.route.data
      .subscribe((data: { envSpecific: EnvProperties }) => {

        var description = "open access, research, scientific publication, European Commission, EC, FP7, ERC, Horizon 2020, H2020, search, projects ";
        var title = "OpenAIRE | Search publications, research data, projects... | OpenAIRE";
        this.properties = data.envSpecific;
        var url = data.envSpecific.baseLink + this._router.url;
        this._title.setTitle(title);
        this._meta.updateTag({content: description}, "name='description'");
        this._meta.updateTag({content: description}, "property='og:description'");
        this._meta.updateTag({content: title}, "property='og:title'");
        this._meta.updateTag({content: url}, "property='og:url'");
        this.seoService.createLinkForCanonicalURL(this.properties.baseLink + this._router.url, false);
        if (this.properties.enablePiwikTrack && (typeof document !== 'undefined')) {
          this.piwiksub = this._piwikService.trackView(this.properties, "OpenAIRE |Search publications, research data, projects...", this.piwikSiteId).subscribe();

        }


        if ((this.customFilter && this.customFilter.queryFieldName == "communitId") || this.properties.adminToolsCommunity) {
          this.config.getCommunityInformation(this.properties, (this.customFilter && this.customFilter.queryFieldName == "communitId") ? this.customFilter.valueId : this.properties.adminToolsCommunity).subscribe(data => {
            var showEntity = {};
            for (var i = 0; i < data['entities'].length; i++) {

              showEntity["" + data['entities'][i]["pid"] + ""] = data['entities'][i]["isEnabled"];
            }
            this.showPublications = showEntity["publication"];
            this.showDatasets = showEntity["dataset"];
            this.showProjects = showEntity["project"];
            this.showOrganizations = showEntity["organization"];
            this.showDataProviders = showEntity["datasource"];
            this.showSoftware = showEntity["software"];
            this.showOrps = showEntity["orp"];
            if (this.customFilter && this.customFilter.queryFieldName == "communityId") {
              this.showProjects = false;
              this.showOrganizations = false;
              this.showDataProviders = false;
            }
            this.loadAll();

          });
        } else {
          if ((this.customFilter && this.customFilter.queryFieldName == "country")) {
            this.showPublications = true;
            this.showDatasets = true;
            this.showDataProviders = true;
            this.showSoftware = true;
            this.showOrps = true;
            this.showProjects = true;
            this.showOrganizations = true;
            this.showDataProviders = true;
          }
        }
        this.loadAll();
      });
  }

  loadAll() {
    this.reloadTabs();
    this.sub = this.route.queryParams.subscribe(params => {
      this.parameters = Object.assign({}, params);
      this.keyword = (params['keyword']) ? params['keyword'] : (params["q"] ? params["q"] : "");
      this.selectedFields[0].value = this.keyword;
      this.quickFilter.selected = ((params['qf']== undefined || params["qf"] == "true") == true);
      if (params["type"] && params["type"].length > 0) {
        this.resultTypes['publication'] = (params["type"].split(",").indexOf("publications") != -1);
        this.resultTypes['dataset'] = (params["type"].split(",").indexOf("datasets") != -1);
        this.resultTypes['software'] = (params["type"].split(",").indexOf("software") != -1);
        this.resultTypes['other'] = (params["type"].split(",").indexOf("other") != -1);
      }
      if(this.activeEntity == null && (!params["active"] || params["active"].length ==0)){
        this.activeEntity = this.getDefaultEntityToShow();
      }else if(params["active"] && params["active"].length >0 ){
        this.activeEntity = ((["result","projects","organizations","datasources"]).indexOf(params["active"])!= -1)?params["active"]:this.getDefaultEntityToShow();
      }else if (this.activeEntity !=null  && (!params["active"] || params["active"].length ==0)){
        this.parameters["active"]=this.activeEntity;
        if(location.search && location.search.indexOf("active=") == -1){
          this.location.go(location.pathname, ((location.search)?(location.search+"&"):("?")) +"active=" + this.activeEntity);
        }
      }
      if (this.activeEntity == "result") {
        this.searchResults();
      } else if (this.activeEntity == "projects") {
        this.searchProjects();
      } else if (this.activeEntity == "datasources") {
        this.searchDataProviders();
      } else if (this.activeEntity == "organizations") {
        this.searchOrganizations();
      }
      this.count();
    });
  }

  getDefaultEntityToShow(){
    if (this.showPublications || this.showDatasets || this.showSoftware || this.showOrps) {
      return "result";
    } else if (this.showProjects) {
      return "projects";
    } else if (this.showDataProviders) {
      return "content providers";
    } else if (this.showOrganizations) {
      return "organizations";
    }
  }

  public ngOnDestroy() {
    if (this.sub) {
      this.sub.unsubscribe();
    }
    if (this.piwiksub) {
      this.piwiksub.unsubscribe();
    }
    if (this.keyword != null && this.keyword.length > 0) {
      if (this.subPub) {
        this.subPub.unsubscribe();
      }
      if (this.subData) {
        this.subData.unsubscribe();
      }
      if (this.subSoftware) {
        this.subSoftware.unsubscribe();
      }
      if (this.subOrps) {
        this.subOrps.unsubscribe();
      }
      if (this.subProjects) {
        this.subProjects.unsubscribe();
      }
      if (this.subOrg) {
        this.subOrg.unsubscribe();
      }
      if (this.subDataPr) {
        this.subDataPr.unsubscribe();
      }

    }
  }

  public searchResults() {
    this.advancedSearchLink = this.properties.searchLinkToAdvancedPublications;//"/search/advanced/publications";
    if (this.reload[this.activeEntity] &&
      this.fetchPublications.searchUtils.status != this.errorCodes.NONE) {
      this.reload[this.activeEntity] = false;
      this.linkToSearchPublications = this.properties.searchLinkToPublications;// + "?keyword="  + this.keyword;
    }
  }


  public searchProjects() {
    this.advancedSearchLink = this.properties.searchLinkToAdvancedProjects;//"/search/advanced/projects";
    if (this.reload[this.activeEntity] &&
      this.fetchProjects.searchUtils.status != this.errorCodes.NONE ) {
      this.reload[this.activeEntity]  = false;
      this.linkToSearchProjects = this.properties.searchLinkToProjects;// + "?keyword="  + this.keyword;
    }
  }

  public searchDataProviders() {
    this.advancedSearchLink = this.properties.searchLinkToAdvancedDataProviders;//"/search/advanced/dataproviders";
    if ( this.reload[this.activeEntity] &&
      this.fetchDataproviders.searchUtils.status != this.errorCodes.NONE) {
      this.reload[this.activeEntity] = false;
      this.linkToSearchDataproviders = this.properties.searchLinkToDataProviders;// + "?keyword="  + this.keyword;
    }
  }

  public searchOrganizations() {
    this.advancedSearchLink = this.properties.searchLinkToAdvancedOrganizations;//"/search/advanced/organizations";
    if (this.reload[this.activeEntity] &&
      this.fetchOrganizations.searchUtils.status != this.errorCodes.NONE) {
      this.reload[this.activeEntity] = false;
      this.linkToSearchOrganizations = this.properties.searchLinkToOrganizations;// + "?keyword="  + this.keyword;
    }
  }
  private prepareKeywordParam(keyword){
    if (this.parameters["q"] && keyword.length == 0) {
      delete this.parameters['q'];
      delete this.parameters['op'];
    } else {
      this.parameters["q"] = keyword;
      this.parameters["op"] = "and";
    }
  }
  private prepareResultParameters() {
    //quickSelections
    if (this.resultTypes && this.activeEntity == "result") {
      let values = [];
      if (this.resultTypes.publication) {
        values.push("publications");
      }
      if (this.resultTypes.dataset) {
        values.push("datasets");
      }
      if (this.resultTypes.software) {
        values.push("software");
      }
      if (this.resultTypes.other) {
        values.push("other");
      }
      if (values.length > 0) {
        this.parameters["type"] = values.join(",");
      }
    }
    if (this.quickFilter && this.activeEntity == "result") {
      this.parameters["qf"] = this.quickFilter.selected;
    }
  }

  public quickSelectionsChanged() {
    this.prepareResultParameters();
    this.reload[this.activeEntity] = true;
    this.router.navigate([location.pathname], {queryParams: this.parameters});
  }


  public keywordChanged($event) {
    this.prepareKeywordParam(this.selectedFields[0].value);
    this.reloadTabs();
    this.router.navigate([location.pathname], {queryParams: this.parameters});
  }

  private count() {
    var refineParams = null;
    if (this.customFilter) {
      refineParams = (refineParams ? (refineParams + '&') : '') + "&fq=" + StringUtils.URIEncode(this.customFilter.queryFieldName + " exact " + StringUtils.quote((this.customFilter.valueId)));
    }
    if (this.activeEntity != "result" && this.reload["result"] &&  (this.showPublications || this.showSoftware || this.datasets || this.showOrps)) {
      this.fetchPublications.searchUtils.status = this.errorCodes.LOADING;
      this.reload["result"] = false;
      this.fetchPublications.results = [];
      this.subPub = this.numOfSearchResults(this.fetchPublications, refineParams);
    }

    if (this.activeEntity != "projects" && this.reload["projects"] && this.showProjects) {
      this.fetchProjects.searchUtils.status = this.errorCodes.LOADING;
      this.fetchProjects.results = [];
      this.reload["projects"] = false;
      this.subProjects = this._searchProjectsService.numOfSearchProjects(this.keyword, this.properties, refineParams).subscribe(
        data => {
          this.fetchProjects.searchUtils.totalResults = data;
          this.fetchProjects.searchUtils.status = this.errorCodes.DONE;
          if (this.fetchProjects.searchUtils.totalResults == 0) {
            this.fetchProjects.searchUtils.status = this.errorCodes.NONE;
          }
        },
        err => {
          //console.log(err);
          this.handleError("Error getting number of Projects", err);
          this.fetchProjects.searchUtils.status = this.errorCodes.ERROR;
        }
      );
    }
    if (this.activeEntity != "datasources"  && this.reload["datasources"] && this.showDataProviders) {
      this.fetchDataproviders.results = [];
      this.reload["datasources"] = false;
      this.fetchDataproviders.getNumForSearch(this.keyword, this.properties, refineParams);
    }
    if (this.activeEntity != "organizations" && this.reload["organizations"] && this.showOrganizations) {
      this.fetchOrganizations.searchUtils.status = this.errorCodes.LOADING;
      this.fetchOrganizations.results = [];
      this.reload["organizations"] = false;
      this.subOrg = this._searchOrganizationsService.numOfSearchOrganizations(this.keyword, this.properties, refineParams).subscribe(
        data => {
          this.fetchOrganizations.searchUtils.totalResults = data;
          this.fetchOrganizations.searchUtils.status = this.errorCodes.DONE;
          if (this.fetchOrganizations.searchUtils.totalResults == 0) {
            this.fetchOrganizations.searchUtils.status = this.errorCodes.NONE;
          }
        },
        err => {
          //console.log(err);
          this.handleError("Error getting number of Organizations", err);
          this.fetchOrganizations.searchUtils.status = this.errorCodes.ERROR;

        }
      );
    }


  }

  private numOfSearchResults(fetchClass: FetchResearchResults, refineParams): Observable<any> {
    return this._searchResearchResultsService.numOfResearchOutcomes(this.keyword, this.properties, refineParams).subscribe(
      data => {
        fetchClass.searchUtils.totalResults = data;
        fetchClass.searchUtils.status = this.errorCodes.DONE;
        if (fetchClass.searchUtils.totalResults == 0) {
          fetchClass.searchUtils.status = this.errorCodes.NONE;
        }
      },
      err => {
        this.handleError("Error getting number of research results", err);
        fetchClass.searchUtils.status = this.errorCodes.ERROR;
      }
    );
  }

  private reloadTabs() {
    this.reload = {result:true, projects:true, datasources: true, organizations:true};
    this.fetchOrganizations.searchUtils.status = this.errorCodes.LOADING;
    this.fetchDataproviders.searchUtils.status =  this.errorCodes.LOADING;
    this.fetchProjects.searchUtils.status =  this.errorCodes.LOADING;
    this.fetchPublications.searchUtils.status =  this.errorCodes.LOADING;
    this.fetchDatasets.searchUtils.status =  this.errorCodes.LOADING;
    this.fetchSoftware.searchUtils.status =  this.errorCodes.LOADING;
    this.fetchOrps.searchUtils.status =  this.errorCodes.LOADING;
  }

  private handleError(message: string, error) {
    console.error("General Search Page: " + message, error);
  }

  private getEntityName(entityType: string, plural: boolean, full: boolean): string {
    if (entityType == "publication") {
      return "publication" + (plural ? "s" : "");
    } else if (entityType == "dataset") {
      return (full ? "research data" : ("dataset" + (plural ? "s" : "")));
    } else if (entityType == "software") {
      return "software";
    } else if (entityType == "other") {
      return (full ? ("other research product" + (plural ? "s" : "")) : "other");
    }
  }

  activeEntityUpdate($event) {
    this.disableForms = $event.disableForms;
    let updated = true;
    if (this.activeEntity == "result") {
      if($event.searchUtils.status!=this.errorCodes.LOADING) {
        this.fetchPublications.searchUtils.totalResults = $event.searchUtils.totalResults;
      }
      this.fetchPublications.searchUtils.status = $event.searchUtils.status;
    }else if (this.activeEntity == "projects"){
      if($event.searchUtils.status!=this.errorCodes.LOADING) {
        this.fetchProjects.searchUtils.totalResults = $event.searchUtils.totalResults;
      }
      this.fetchProjects.searchUtils.status = $event.searchUtils.status;
    }else if (this.activeEntity == "datasources"){
      if($event.searchUtils.status!=this.errorCodes.LOADING) {
        this.fetchDataproviders.searchUtils.totalResults = $event.searchUtils.totalResults;
      }
      this.fetchDataproviders.searchUtils.status = $event.searchUtils.status;
    }else if (this.activeEntity == "organizations") {
      if($event.searchUtils.status!=this.errorCodes.LOADING) {
        this.fetchOrganizations.searchUtils.totalResults = $event.searchUtils.totalResults;
      }
      this.fetchOrganizations.searchUtils.status = $event.searchUtils.status;
    }else{
      updated = false;
    }
    if(updated) {
      this.cdr.detectChanges();
    }
  }

  entityChanged(entity){
    this.activeEntity = entity;
      this.parameters = {};
      this.reload[entity]= true;
      this.parameters["active"] = entity;
    if ( this.keyword.length > 0) {
      this.parameters["q"] = this.keyword;
      this.parameters["op"] = "and";
    }
      this.router.navigate([location.pathname], {queryParams: this.parameters});
    }

}