import { Component, OnInit } from '@angular/core';
import { BaseComponent } from '@common/base/base.component';
import { DatasetOverviewModel } from '@app/core/model/dataset/dataset-overview';
import { BreadcrumbItem } from '@app/ui/misc/breadcrumb/definition/breadcrumb-item';
import { Observable, of as observableOf, interval } from 'rxjs';
import { ActivatedRoute, Router, Params } from '@angular/router';
import { DatasetService } from '@app/core/services/dataset/dataset.service';
import { TranslateService } from '@ngx-translate/core';
import { AuthService } from '@app/core/services/auth/auth.service';
import { MatDialog } from '@angular/material';
import { SnackBarNotificationLevel, UiNotificationService } from '@app/core/services/notification/ui-notification-service';
import { ConfigurationService } from '@app/core/services/configuration/configuration.service';
import { Oauth2DialogService } from '@app/ui/misc/oauth2-dialog/service/oauth2-dialog.service';
import { UserService } from '@app/core/services/user/user.service';
import { takeUntil } from 'rxjs/operators';
import { Principal } from '@app/core/model/auth/principal';
import { Role } from '@app/core/common/enum/role';
import { Location } from '@angular/common';
import { UserInfoListingModel } from '@app/core/model/user/user-info-listing';
import { DatasetStatus } from '@app/core/common/enum/dataset-status';
import { ConfirmationDialogComponent } from '@common/modules/confirmation-dialog/confirmation-dialog.component';
import * as FileSaver from 'file-saver';
import { DmpInvitationDialogComponent } from '@app/ui/dmp/invitation/dmp-invitation.component';
import { DatasetWizardEditorModel } from '../dataset-wizard/dataset-wizard-editor.model';
import { DatasetWizardService } from '@app/core/services/dataset-wizard/dataset-wizard.service';
import { FormControl } from '@angular/forms';
import { DatasetCopyDialogueComponent } from '../dataset-wizard/dataset-copy-dialogue/dataset-copy-dialogue.component';
import { DmpService } from '@app/core/services/dmp/dmp.service';
import { ResearcherModel } from '@app/core/model/researcher/researcher';
import { LockService } from '@app/core/services/lock/lock.service';


@Component({
  selector: 'app-dataset-overview',
  templateUrl: './dataset-overview.component.html',
  styleUrls: ['./dataset-overview.component.scss']
})
export class DatasetOverviewComponent extends BaseComponent implements OnInit {

  dataset: DatasetOverviewModel;
  datasetWizardModel: DatasetWizardEditorModel;
  isNew = true;
  isFinalized = false;
  isPublicView = true;
  hasPublishButton: boolean = true;
  breadCrumbs: Observable<BreadcrumbItem[]> = observableOf();
  isUserOwner: boolean;
  expand = false;
  hasDOIToken = false;
  researchers: ResearcherModel[];
  users: UserInfoListingModel[];
  lockStatus = false;
  // lockStatus: Boolean;

  constructor(
    private route: ActivatedRoute,
    private router: Router,
    private datasetService: DatasetService,
    private translate: TranslateService,
    private authentication: AuthService,
    private dialog: MatDialog,
    private language: TranslateService,
    private uiNotificationService: UiNotificationService,
    private configurationService: ConfigurationService,
    private oauth2DialogService: Oauth2DialogService,
    private userService: UserService,
    private dmpService: DmpService,
    private location: Location,
    private datasetWizardService: DatasetWizardService,
    private lockService: LockService
  ) {
    super();
  }

  ngOnInit() {
    // Gets dataset data using parameter id
    this.route.params
      .pipe(takeUntil(this._destroyed))
      .subscribe((params: Params) => {
        const itemId = params['id'];
        const publicId = params['publicId'];
        if (itemId != null) {
          this.isNew = false;
          this.isPublicView = false;
          this.datasetService.getOverviewSingle(itemId)
            .pipe(takeUntil(this._destroyed))
            .subscribe(data => {
              this.dataset = data;
              this.getDmpResearchers();
              this.getDmpUsers();
              this.datasetWizardService.getSingle(this.dataset.id).pipe(takeUntil(this._destroyed))
                .subscribe(data => {
                  this.datasetWizardModel = new DatasetWizardEditorModel().fromModel(data);
                });
              // this.checkLockStatus(this.dataset.id);
              this.setIsUserOwner();
              const breadCrumbs = [];
              breadCrumbs.push({ parentComponentName: null, label: this.language.instant('NAV-BAR.MY-DATASET-DESCRIPTIONS'), url: "/datasets" });
              breadCrumbs.push({ parentComponentName: 'DatasetListingComponent', label: this.dataset.label, url: '/datasets/overview/' + this.dataset.id });
              this.breadCrumbs = observableOf(breadCrumbs);
            }, (error: any) => {
              if (error.status === 404) {
                return this.onFetchingDeletedCallbackError('/datasets/');
              }
              if (error.status === 403) {
                return this.onFetchingForbiddenCallbackError('/datasets/');
              }
            });
        }
        else if (publicId != null) {
          this.isNew = false;
          this.isFinalized = true;
          this.isPublicView = true;
          this.datasetService.getOverviewSinglePublic(publicId)
            .pipe(takeUntil(this._destroyed))
            .subscribe(data => {
              this.dataset = data;
              this.getDmpResearchers();
              this.getDmpUsers();
              this.datasetWizardService.getSingle(this.dataset.id).pipe(takeUntil(this._destroyed))
                .subscribe(data => {
                  this.datasetWizardModel = new DatasetWizardEditorModel().fromModel(data);
                });
              // this.checkLockStatus(this.dataset.id);
              this.setIsUserOwner();
              const breadCrumbs = [];
              breadCrumbs.push({ parentComponentName: null, label: this.language.instant('NAV-BAR.PUBLIC DATASETS'), url: "/explore" });
              breadCrumbs.push({ parentComponentName: 'DatasetListingComponent', label: this.dataset.label, url: '/datasets/publicOverview/' + this.dataset.id });
              this.breadCrumbs = observableOf(breadCrumbs);
            }, (error: any) => {
              if (error.status === 404) {
                return this.onFetchingDeletedCallbackError('/explore');
              }
              if (error.status === 403) {
                return this.onFetchingForbiddenCallbackError('/explore');
              }
            });
        }
      });
  }

  checkLockStatus(id: string) {
    this.lockService.checkLockStatus(id).pipe(takeUntil(this._destroyed))
      .subscribe(lockStatus => this.lockStatus = lockStatus);
  }

  onFetchingDeletedCallbackError(redirectRoot: string) {
    this.uiNotificationService.snackBarNotification(this.language.instant('DATASET-OVERVIEW.ERROR.DELETED-DATASET'), SnackBarNotificationLevel.Error);
    this.router.navigate([redirectRoot]);
  }

  onFetchingForbiddenCallbackError(redirectRoot: string) {
    this.uiNotificationService.snackBarNotification(this.language.instant('DATASET-OVERVIEW.ERROR.FORBIDEN-DATASET'), SnackBarNotificationLevel.Error);
    this.router.navigate([redirectRoot]);
  }

  goBack(): void {
    this.location.back();
  }

  reloadComponent(): void {
    this.router.navigateByUrl('/datasets', { skipLocationChange: true }).then(() => {
      this.router.navigate([`/datasets/overview/${this.dataset.id}`]);
    });
  }

  getDmpResearchers() {
    this.dmpService.getSingle(this.dataset.dmp.id).pipe(takeUntil(this._destroyed))
      .subscribe(data => {
        this.researchers = data.researchers;
      });
  }

  getDmpUsers() {
    this.dmpService.getSingle(this.dataset.dmp.id).pipe(takeUntil(this._destroyed))
      .subscribe(data => {
        this.users = data.users;
      });
  }

  setIsUserOwner() {
    if (this.dataset) {
      const principal: Principal = this.authentication.current();
      if (principal) this.isUserOwner = principal.id === this.dataset.users.find(x => x.role === Role.Owner).id;
    }
  }

  isUserAuthor(userId: string): boolean {
    const principal: Principal = this.authentication.current();
    return userId === principal.id;
  }

  isUserDatasetRelated() {
    const principal: Principal = this.authentication.current();
    let isRelated: boolean = false;
    if (this.dataset && principal) {
      this.dataset.users.forEach(element => {
        if (element.id === principal.id) {
          isRelated = true;
        }
      })
    }
    return isRelated;
  }

  roleDisplay(value: UserInfoListingModel) {
    if (value.role === Role.Owner) {
      return this.translate.instant('DMP-LISTING.OWNER');
    } else if (value.role === Role.Member) {
      return this.translate.instant('DMP-LISTING.MEMBER');
    } else {
      return this.translate.instant('DMP-LISTING.OWNER');
    }
  }


  roleDisplayFromList(value: UserInfoListingModel[]) {
    const principal: Principal = this.authentication.current();
    let role: number;
    if (principal) {
      value.forEach(element => {
        if (principal.id === element.id) {
          role = element.role;
        }
      });
    }
    if (role === Role.Owner) {
      return this.translate.instant('DMP-LISTING.OWNER');
    } else if (role === Role.Member) {
      return this.translate.instant('DMP-LISTING.MEMBER');
    } else {
      return this.translate.instant('DMP-LISTING.OWNER');
    }
  }

  openShareDialog(rowId: any, rowName: any) {
    const dialogRef = this.dialog.open(DmpInvitationDialogComponent, {
      restoreFocus: false,
      data: {
        dmpId: rowId,
        dmpName: rowName
      }
    });
  }

  public isAuthenticated(): boolean {
    return !(!this.authentication.current());
  }

  isDraftDataset(dataset: DatasetOverviewModel) {
    return dataset.status == DatasetStatus.Draft;
  }

  isFinalizedDataset(dataset: DatasetOverviewModel) {
    return dataset.status == DatasetStatus.Finalized;
  }

  editClicked(dataset: DatasetOverviewModel) {
    if (dataset.public) {
      this.router.navigate(['/datasets/publicEdit/' + dataset.id]);
    } else {
      this.router.navigate(['/datasets/edit/' + dataset.id]);
    }
  }

  deleteClicked() {
    const dialogRef = this.dialog.open(ConfirmationDialogComponent, {
      maxWidth: '300px',
      data: {
        message: this.language.instant('GENERAL.CONFIRMATION-DIALOG.DELETE-ITEM'),
        confirmButton: this.language.instant('GENERAL.CONFIRMATION-DIALOG.ACTIONS.DELETE'),
        cancelButton: this.language.instant('GENERAL.CONFIRMATION-DIALOG.ACTIONS.CANCEL'),
        isDeleteConfirmation: true
      }
    });
    dialogRef.afterClosed().pipe(takeUntil(this._destroyed)).subscribe(result => {
      if (result) {
        this.datasetService.delete(this.dataset.id)
          .pipe(takeUntil(this._destroyed))
          .subscribe(
            complete => {
              this.onCallbackSuccess();
              this.router.navigate(['/datasets']);
            },
            error => this.onDeleteCallbackError(error)
          );
      }
    });
  }

  dmpClicked(dmpId: String) {
    this.router.navigate(['/plans/overview/' + dmpId]);
  }

  onCallbackSuccess(): void {
    this.uiNotificationService.snackBarNotification(this.isNew ? this.language.instant('GENERAL.SNACK-BAR.SUCCESSFUL-CREATION') : this.language.instant('GENERAL.SNACK-BAR.SUCCESSFUL-UPDATE'), SnackBarNotificationLevel.Success);
  }

  onDeleteCallbackError(error) {
    this.uiNotificationService.snackBarNotification(error.error.message ? error.error.message : this.language.instant('GENERAL.SNACK-BAR.UNSUCCESSFUL-DELETE'), SnackBarNotificationLevel.Error);
  }

  public getOrcidPath(): string {
    return this.configurationService.orcidPath;
  }

  downloadPDF(id: string) {
    this.datasetService.downloadPDF(id)
      .pipe(takeUntil(this._destroyed))
      .subscribe(response => {
        const blob = new Blob([response.body], { type: 'application/pdf' });
        const filename = this.getFilenameFromContentDispositionHeader(response.headers.get('Content-Disposition'));

        FileSaver.saveAs(blob, filename);
      });
  }

  downloadDocx(id: string) {
    this.datasetService.downloadDocx(id)
      .pipe(takeUntil(this._destroyed))
      .subscribe(response => {
        const blob = new Blob([response.body], { type: 'application/msword' });
        const filename = this.getFilenameFromContentDispositionHeader(response.headers.get('Content-Disposition'));

        FileSaver.saveAs(blob, filename);
      });
  }

  downloadXml(id: string) {
    this.datasetService.downloadXML(id)
      .pipe(takeUntil(this._destroyed))
      .subscribe(response => {
        const blob = new Blob([response.body], { type: 'application/xml' });
        const filename = this.getFilenameFromContentDispositionHeader(response.headers.get('Content-Disposition'));

        FileSaver.saveAs(blob, filename);
      });
  }

  downloadJson(id: string) {
    this.datasetService.downloadJson(id)
      .pipe(takeUntil(this._destroyed))
      .subscribe(response => {
        const blob = new Blob([response.body], { type: 'application/json' });
        const filename = this.getFilenameFromContentDispositionHeader(response.headers.get('Content-Disposition'));
        FileSaver.saveAs(blob, filename);
      })
  }

  getFilenameFromContentDispositionHeader(header: string): string {
    const regex: RegExp = new RegExp(/filename[^;=\n]*=((['"]).*?\2|[^;\n]*)/g);

    const matches = header.match(regex);
    let filename: string;
    for (let i = 0; i < matches.length; i++) {
      const match = matches[i];
      if (match.includes('filename="')) {
        filename = match.substring(10, match.length - 1);
        break;
      } else if (match.includes('filename=')) {
        filename = match.substring(9);
        break;
      }
    }
    return filename;
  }

  openDmpSearchDialogue() {
    const formControl = new FormControl();
    const dialogRef = this.dialog.open(DatasetCopyDialogueComponent, {
      width: '500px',
      restoreFocus: false,
      data: {
        formControl: formControl,
        datasetId: this.dataset.id,
        datasetProfileId: this.datasetWizardModel.profile,
        datasetProfileExist: false,
        confirmButton: this.language.instant('DATASET-WIZARD.DIALOGUE.COPY'),
        cancelButton: this.language.instant('DATASET-WIZARD.DIALOGUE.CANCEL')
      }
    });

    dialogRef.afterClosed().pipe(takeUntil(this._destroyed))
      .subscribe(result => {
        if (result && result.datasetProfileExist) {
          const newDmpId = result.formControl.value.id
          this.router.navigate(['/datasets/copy/' + result.datasetId], { queryParams: { newDmpId: newDmpId } });
        }
      });
  }

  updateUsers() {
    return this.dmpService.updateUsers(this.dataset.dmp.id, this.users).pipe(takeUntil(this._destroyed))
      .subscribe(
        complete => {
          this.onCallbackSuccess();
          this.reloadComponent();
        },
        error => this.onDeleteCallbackError(error)
      );
  }

  removeUserFromDmp(user: UserInfoListingModel) {
    const dialogRef = this.dialog.open(ConfirmationDialogComponent, {
      data: {
        message: this.language.instant('GENERAL.CONFIRMATION-DIALOG.DELETE-USER'),
        confirmButton: this.language.instant('GENERAL.CONFIRMATION-DIALOG.ACTIONS.REMOVE'),
        cancelButton: this.language.instant('GENERAL.CONFIRMATION-DIALOG.ACTIONS.CANCEL'),
        isDeleteConfirmation: false
      }
    });
    dialogRef.afterClosed().subscribe(result => {
      if (result) {
        const index = this.users.findIndex(x => x.id === user.id);
        if (index > -1) {
        	this.users.splice(index, 1);
        }
        this.updateUsers();
      }
    });
  }


}