import {Component, ViewChild, OnInit, ElementRef} from '@angular/core';
import {ActivatedRoute, Router} from '@angular/router';
import {HelpContentService} from '../../services/help-content.service';
import {FormBuilder, FormControl, FormGroup} from '@angular/forms';
import {CheckCommunity, Community} from '../../utils/entities/adminTool/community';
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";

@Component({
  selector: 'communities',
  templateUrl: './communities.component.html',
})

export class CommunitiesComponent implements OnInit {

  @ViewChild('AlertModalSaveCommunity') alertModalSaveCommunity;
  @ViewChild('AlertModalDeleteCommunities') alertModalDeleteCommunities;
  private selectedCommunities: string[] = [];

  public checkboxes: CheckCommunity[] = [];
  public communities: Community[] = [];

  public portalFG: FormGroup;
  public formControl: FormControl;
  private subscriptions: any[] = [];

  private searchText: RegExp = new RegExp('');
  public keyword = '';

  public properties: EnvProperties = null;

  public showLoading = true;
  public errorMessage = '';
  public updateErrorMessage = '';
  public modalErrorMessage = '';

  ngOnInit() {
    this.portalFG = this._fb.group({
      name: '',
      _id: '',
      pid: ''
    });
    this.formControl = this._fb.control('');
    this.subscriptions.push(this.formControl.valueChanges.subscribe(value => {
      this.filterBySearch(value);
    }));

    this.route.data
      .subscribe((data: { envSpecific: EnvProperties }) => {
        HelperFunctions.scroll();

        this.properties = data.envSpecific;
        this.getCommunities();
      });
  }

  constructor(private element: ElementRef, private route: ActivatedRoute,
              private _router: Router, private _helpContentService: HelpContentService, private _fb: FormBuilder) {
  }


  ngOnDestroy(): void {
    this.subscriptions.forEach(value => {
      if (value instanceof Subscriber) {
        value.unsubscribe();
      } else if (value instanceof Function) {
        value();
      }
    });
  }

  getCommunities() {
    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._helpContentService.getCommunitiesFull(this.properties.adminToolsAPIURL).subscribe(
        communities => {
          this.communities = communities;
          communities.forEach(_ => {
            this.checkboxes.push(<CheckCommunity>{community: _, checked: false});
          });
          this.showLoading = false;
        },
        error => this.handleError('System error retrieving communities', error));
    }
  }

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

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

  public getSelectedCommunities(): string[] {
    return this.checkboxes.filter(community => community.checked === true).map(checkedCommunity => checkedCommunity.community).map(res => res._id);
  }

  private deleteCommunitiesFromArray(ids: string[]): void {
    for (let id of ids) {
      let i = this.checkboxes.findIndex(_ => _.community._id === id);
      this.checkboxes.splice(i, 1);
    }
  }

  public confirmDeleteCommunity(id: string) {
    // this.deleteConfirmationModal.ids = [id];
    // this.deleteConfirmationModal.showModal();
    this.selectedCommunities = [id];
    this.confirmModalOpen();
  }

  public confirmDeleteSelectedCommunities() {
    this.selectedCommunities = this.getSelectedCommunities();
    this.confirmModalOpen();
  }

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

  public confirmedDeleteCommunities(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._helpContentService.deleteCommunities(this.selectedCommunities, this.properties.adminToolsAPIURL).subscribe(
        _ => {
          this.deleteCommunitiesFromArray(this.selectedCommunities);
          this.showLoading = false;
        },
        error => this.handleUpdateError('System error deleting the selected communities', error)
      );
    }
  }

  public editCommunity(i: number) {
    const community: Community = this.checkboxes[i].community;
    this.portalFG = this._fb.group({
      name: community.name,
      _id: community._id,
      pid: community.pid
    });
    this.modalErrorMessage = '';
    this.communitiesModalOpen(this.alertModalSaveCommunity, 'Update', 'Update Community');
  }

  public newCommunity() {
    this.portalFG = this._fb.group({
      name: '',
      _id: '',
      pid: ''
    });
    this.modalErrorMessage = '';
    this.communitiesModalOpen(this.alertModalSaveCommunity, '', 'Save');
  }

  private communitiesModalOpen(modal: any, title: string, yesBtn: string) {
    if (!Session.isLoggedIn()) {
      this._router.navigate(['/user-info'], {
        queryParams: {'errorCode': LoginErrorCodes.NOT_VALID, 'redirectUrl': this._router.url}
      });
    } else {
      modal.cancelButton = true;
      modal.okButton = true;
      modal.alertTitle = title;
      modal.okButtonText = yesBtn;
      modal.open();
    }
  }

  public communitySaveConfirmed(data: any) {
    if (!Session.isLoggedIn()) {
      this._router.navigate(['/user-info'], {
        queryParams: {'errorCode': LoginErrorCodes.NOT_VALID, 'redirectUrl': this._router.url}
      });
    } else {

      this.modalErrorMessage = '';
      if (this.portalFG.getRawValue()['_id'].length > 0) {
        this._helpContentService.updateCommunity(<Community>this.portalFG.value,
          this.properties.adminToolsAPIURL).subscribe(
          community => {
            this.communityUpdatedSuccessfully(community);
          },
          error => this.handleUpdateError('System error updating portal', error)
        );
      }else{
        this._helpContentService.saveCommunity(<Community>this.portalFG.value,
          this.properties.adminToolsAPIURL).subscribe(
          community => {
            this.communitySavedSuccessfully(community);
          },
          error => this.handleUpdateError('System error creating portal', error)
        );
      }

    }
  }

  public communityUpdateConfirmed(data: any) {
    if (!Session.isLoggedIn()) {
      this._router.navigate(['/user-info'], {
        queryParams: {'errorCode': LoginErrorCodes.NOT_VALID, 'redirectUrl': this._router.url}
      });
    } else {
      this._helpContentService.updateCommunity(<Community>this.portalFG.value,
        this.properties.adminToolsAPIURL).subscribe(
        community => {
          this.communityUpdatedSuccessfully(community);
        },
        error => this.handleUpdateError('System error updating portal', error)
      );
    }
  }

  public communitySavedSuccessfully(community: Community) {
    this.checkboxes.push(<CheckCommunity>{community: community, checked: false});
    this.applyCheck(false);
  }

  public communityUpdatedSuccessfully(community: Community) {
    this.checkboxes.find(checkItem => checkItem.community._id === community._id).community = community;
    this.applyCheck(false);
  }

  public filterBySearch(text: string) {
    this.searchText = new RegExp(text, 'i');
    this.applyFilter();
  }

  public applyFilter() {
    this.checkboxes = [];
    this.communities.filter(item => this.filterCommunities(item)).forEach(
      _ => this.checkboxes.push(<CheckCommunity>{community: _, checked: false})
    );
  }

  public filterCommunities(community: Community): boolean {
    const textFlag = this.searchText.toString() === '' || (community.name).match(this.searchText) != null;
    return textFlag;
  }

  handleUpdateError(message: string, error) {
    if (error == null) {
      this.portalFG = this._fb.group({
        name: '',
        _id: '',
        pid: ''
      });
    } else {
      this.updateErrorMessage = message;
      console.log('Server responded: ' + error);
    }

    this.showLoading = false;
  }

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

    this.showLoading = false;
  }
}