import {Component, ViewChild, OnInit, ElementRef} from '@angular/core';
import {FormBuilder, FormControl, FormGroup} from "@angular/forms";
import {ActivatedRoute, Router} from "@angular/router";
import {HelpContentService} from "../../services/help-content.service";
import {PageHelpContentFilterOptions} from '../../utils/entities/adminTool/page-help-content';
import {Page} from "../../utils/entities/adminTool/page";
import {Portal} from "../../utils/entities/adminTool/portal";
import {EnvProperties} from '../../utils/properties/env-properties';
import {Session} from '../../login/utils/helper.class';
import {LoginErrorCodes} from '../../login/utils/guardHelper.class';
import {HelperFunctions} from "../../utils/HelperFunctions.class";
import {Subscriber} from "rxjs";
import {properties} from "../../../../environments/environment";
import {DomSanitizer} from '@angular/platform-browser';
import {SearchInputComponent} from '../../sharedComponents/search-input/search-input.component';
import {ConnectHelper} from '../../connect/connectHelper';
import {CheckDivHelpContent, DivHelpContent} from '../../utils/entities/adminTool/div-help-content';
declare var UIkit;


@Component({
  selector: 'class-help-contents',
  templateUrl: './class-help-contents.component.html',
})
export class ClassHelpContentsComponent implements OnInit {

  @ViewChild('AlertModalDeletePageHelpContents') alertModalDeletePageHelpContents;
  private selectedPageContents: string[] = [];

  public checkboxes: CheckDivHelpContent[] = [];

  public pageHelpContents: DivHelpContent[] = [];

  public formGroup: FormGroup;

  public pages: Page[];

  public checkboxAll: boolean = false;

  public filters: PageHelpContentFilterOptions = {id: '', active: null, text: new RegExp('')};
  public keyword: string = "";

  public counter = {all: 0, active: 0, inactive: 0};

  public communities: Portal[] = [];

  public portal: string;

  public selectedPageId: string;

  public community: Portal;

  public page: Page;
  public properties: EnvProperties = null;

  public showLoading: boolean = true;
  public errorMessage: string = '';
  public updateErrorMessage: string = '';
  public filterForm: FormControl;
  public selectForm: FormControl;
  private subscriptions: any[] = [];
  public selectedKeyword: string;
  @ViewChild('searchInputComponent') searchInputComponent: SearchInputComponent;

  ngOnInit() {
    this.filterForm = this._fb.control('');
    this.selectForm = this._fb.control('');
    this.subscriptions.push(this.filterForm.valueChanges.subscribe(value => {
      this.filterBySearch(value);
    }));
    this.subscriptions.push(this.selectForm.valueChanges.subscribe(value => {
      this.filterByPage(value);
    }));

    this.properties = properties;
    this.subscriptions.push(this.route.params.subscribe(params => {
      this.portal = (this.route.snapshot.data.portal) ? this.route.snapshot.data.portal : this.route.snapshot.params[this.route.snapshot.data.param];
      ConnectHelper.setPortalTypeFromPid(this.portal);
      this.subscriptions.push(this.route.queryParams.subscribe(params => {
        HelperFunctions.scroll();
        this.selectedPageId = params['pageId'];
        if (this.portal && this.selectedPageId) {
          this.getPage(this.selectedPageId);
        }
        if(!this.selectedPageId) {
          this.router.navigate(['../pages'], {relativeTo: this.route });
        }
      }));
    }));
  }

  constructor(private element: ElementRef, private route: ActivatedRoute, private router: Router, private _helpService: HelpContentService, private _fb: FormBuilder, private sanitizer: DomSanitizer) {
  }
  ngOnDestroy(): void {
    this.subscriptions.forEach(value => {
      if (value instanceof Subscriber) {
        value.unsubscribe();
      } else if (value instanceof Function) {
        value();
      }
    });
  }
  init(){

  }
  getPage(pageId: string) {
    if (!Session.isLoggedIn()) {
      this.router.navigate(['/user-info'], {
        queryParams: {
          "errorCode": LoginErrorCodes.NOT_VALID,
          "redirectUrl": this.router.url
        }
      });
    } else {
      this.showLoading = true;
      this.updateErrorMessage = "";
      this.errorMessage = "";
      this.subscriptions.push(this._helpService.getPageByPortal(pageId, this.properties.adminToolsAPIURL, this.portal).subscribe(
        page => {
          if (this.properties.adminToolsPortalType != page.portalType) {
            this.router.navigate(['./pageContents'], {queryParams: {"communityId": this.portal}});
          } else {
            this.page = page;
            this.getPageHelpContents(this.portal);
          }
        },
        error => this.handleError('System error retrieving page', error)));
    }
  }


  public countPageHelpContents() {
    this.counter = {all: 0, active: 0, inactive: 0};
    let filter = Object.assign({}, this.filters);
    filter.active = null;
    this.pageHelpContents.forEach(_ => {
      if (this.filterPageHelpContent(_, filter)) {
        if (_.isActive == true) this.counter.active++;
        else this.counter.inactive++
      }
    });
    this.counter.all = this.counter.active + this.counter.inactive;
  }

  getPageHelpContents(community_pid: string) {
    if (!Session.isLoggedIn()) {
      this.router.navigate(['/user-info'], {
        queryParams: {
          "errorCode": LoginErrorCodes.NOT_VALID,
          "redirectUrl": this.router.url
        }
      });
    } else {
      this.subscriptions.push(this._helpService.getCommunityDivHelpContents(community_pid, this.properties.adminToolsAPIURL, this.selectedPageId).subscribe(
        pageHelpContents => {
          this.pageHelpContents = pageHelpContents as Array<DivHelpContent>;
          this.counter.all = this.pageHelpContents.length;
          this.checkboxes = [];

          for (let i = this.pageHelpContents.length - 1; i >= 0; i -= 1) {
            this.checkboxes.unshift(<CheckDivHelpContent>{divHelpContent: this.pageHelpContents[i], checked: false});
          }

          this.countPageHelpContents();

          this.showLoading = false;
        },
        error => this.handleError('System error retrieving page contents', error)));
    }
  }

  public toggleCheckBoxes(event) {
    this.checkboxes.forEach(_ => _.checked = event.target.checked);
    this.checkboxAll = event.target.checked;
  }

  public applyCheck(flag: boolean) {
    this.checkboxes.forEach(_ => _.checked = flag);
    this.checkboxAll = false;
  }

  public getSelectedPageHelpContents(): string[] {
    return this.checkboxes.filter(pageHelpContent => pageHelpContent.checked == true)
      .map(checkedPageHelpContent => checkedPageHelpContent.divHelpContent).map(res => res._id);
  }

  public confirmDeletePageHelpContent(id: string) {
    this.selectedPageContents = [id];
    this.confirmModalOpen();
  }

  public confirmDeleteSelectedPageHelpContents() {

    this.selectedPageContents = this.getSelectedPageHelpContents();
    this.confirmModalOpen();
  }

  private confirmModalOpen() {
    if (!Session.isLoggedIn()) {
      this.router.navigate(['/user-info'], {
        queryParams: {
          "errorCode": LoginErrorCodes.NOT_VALID,
          "redirectUrl": this.router.url
        }
      });
    } else {
      this.alertModalDeletePageHelpContents.cancelButton = true;
      this.alertModalDeletePageHelpContents.okButton = true;
      this.alertModalDeletePageHelpContents.alertTitle = "Delete Confirmation";
      this.alertModalDeletePageHelpContents.message = "Are you sure you want to delete the selected page content(s)?";
      this.alertModalDeletePageHelpContents.okButtonText = "Yes";
      this.alertModalDeletePageHelpContents.open();
    }
  }

  public confirmedDeletePageHelpContents(data: any) {
    if (!Session.isLoggedIn()) {
      this.router.navigate(['/user-info'], {
        queryParams: {
          "errorCode": LoginErrorCodes.NOT_VALID,
          "redirectUrl": this.router.url
        }
      });
    } else {
      this.showLoading = true;
      this.updateErrorMessage = "";

      this.subscriptions.push(this._helpService.deleteDivHelpContents(this.selectedPageContents, this.properties.adminToolsAPIURL, this.portal).subscribe(
        _ => {
          this.deletePageHelpContentsFromArray(this.selectedPageContents);
          UIkit.notification('Page content(s) has been <b>successfully deleted</b>', {
            status: 'success',
            timeout: 6000,
            pos: 'bottom-right'
          });
          this.showLoading = false;
        },
        error => this.handleUpdateError('System error deleting the selected page content(s)', error)
      ));
    }
  }

  private deletePageHelpContentsFromArray(ids: string[]): void {
    for (let id of ids) {
      let iqc = this.checkboxes.findIndex(_ => _.divHelpContent._id == id);
      let iq = this.pageHelpContents.findIndex(_ => _._id == id);
      this.checkboxes.splice(iqc, 1);
      this.pageHelpContents.splice(iqc, 1);
    }
    this.countPageHelpContents();
  }

  public editPageHelpContent(id: string) {
    if (this.selectedPageId) {
      this.router.navigate(['edit/'], {
        queryParams: {
          "pageContentId": id,
          "pageId": this.selectedPageId
        }, relativeTo: this.route
      });
    } else {
      this.router.navigate(['edit/'], {
        queryParams: {
          "pageContentId": id,
        }, relativeTo: this.route
      });
    }
  }

  public togglePageHelpContents(status: boolean, ids: string[]) {
    if (!Session.isLoggedIn()) {
      this.router.navigate(['/user-info'], {
        queryParams: {
          "errorCode": LoginErrorCodes.NOT_VALID,
          "redirectUrl": this.router.url
        }
      });
    } else {
      this.updateErrorMessage = "";

      this.subscriptions.push(this._helpService.toggleDivHelpContents(ids, status, this.properties.adminToolsAPIURL, this.portal).subscribe(
        () => {
          for (let id of ids) {
            let i = this.checkboxes.findIndex(_ => _.divHelpContent._id == id);
            this.checkboxes[i].divHelpContent.isActive = status;
          }
          this.countPageHelpContents();
          this.applyCheck(false);
          UIkit.notification('Page content(s) has been <b>successfully updated</b>', {
            status: 'success',
            timeout: 6000,
            pos: 'bottom-right'
          });
        },
        error => this.handleUpdateError('System error changing the status of the selected page content(s)', error)
      ));
    }
  }


  public filterPageHelpContent(pageHelpContent: DivHelpContent, filters: PageHelpContentFilterOptions): boolean {
    let activeFlag = filters.active == null || pageHelpContent.isActive == filters.active;
    let textFlag = filters.text.toString() == '' || (pageHelpContent.content).match(filters.text) != null;
    return   activeFlag && textFlag;
  }


  public applyFilter() {
    this.checkboxes = [];
    this.pageHelpContents.filter(item => this.filterPageHelpContent(item, this.filters)).forEach(
      _ => {
        this.checkboxes.push(<CheckDivHelpContent>{divHelpContent: _, checked: false})
      }
    );
  }

  public filterByPage(event: any) {
    if(event.target && event.target.value) {
      this.filters.id = event.target.value;
      this.applyFilter();
    }
  }
  public filterBySearch(text: string) {
    this.filters.text = new RegExp(text, "i");
    this.applyFilter();
  }

  handleError(message: string, error) {
    this.errorMessage = message;
    console.log('Server responded: ' + error);

    this.showLoading = false;
  }

  handleUpdateError(message: string, error) {
    this.updateErrorMessage = message;
    console.log('Server responded: ' + error);

    this.showLoading = false;
  }

  public newPageContent() {
      this.router.navigate(['edit'], {
        queryParams: {
          pageId: this.selectedPageId
        }, relativeTo: this.route
      });
  }

  public onSearchClose() {
    this.selectedKeyword = this.filterForm.value;
  }

  public reset() {
    this.selectedKeyword = null;
    this.searchInputComponent.reset()
  }
  selectAll(){
    let checked = !!(this.getSelectedPageHelpContents().length != this.checkboxes.length);
      for (let check of this.checkboxes) {
        check.checked = checked;
      }
  }
}