import { Component, OnInit } from '@angular/core';
import { DmpListingModel } from '../../../core/model/dmp/dmp-listing';
import { EnumUtils } from '../../../core/services/utilities/enum-utils.service';
import { AuthService } from '../../../core/services/auth/auth.service';
import { DataTableRequest } from '../../../core/model/data-table/data-table-request';
import { DmpCriteria } from '../../../core/query/dmp/dmp-criteria';
import { DmpService } from '../../../core/services/dmp/dmp.service';
import { RecentActivityType } from '../../../core/common/enum/recent-activity-type';
import { Router } from '@angular/router';
import { Principal } from '../../../core/model/auth/Principal';
import { TranslateService } from '@ngx-translate/core';
import { ConfirmationDialogComponent } from '../../../library/confirmation-dialog/confirmation-dialog.component';
import { MatDialog } from '@angular/material/dialog';
import { ExportMethodDialogComponent } from '../../../library/export-method-dialog/export-method-dialog.component';
import { BaseComponent } from '../../../core/common/base/base.component';
import { UiNotificationService, SnackBarNotificationLevel } from '../../../core/services/notification/ui-notification-service';
import * as FileSaver from 'file-saver';
import { takeUntil } from 'rxjs/operators';

@Component({
	selector: 'app-recent-edited-activity',
	templateUrl: './recent-edited-activity.component.html',
	styleUrls: ['./recent-edited-activity.component.css']
})
export class RecentEditedActivityComponent extends BaseComponent implements OnInit {
	dmpActivities: DmpListingModel[];
	recentActivityTypeEnum = RecentActivityType;

	constructor(
		private router: Router,
		public enumUtils: EnumUtils,
		private authentication: AuthService,
		private dmpService: DmpService,
		private language: TranslateService,
		private dialog: MatDialog,
		private uiNotificationService: UiNotificationService
	) {
		super();
	}

	ngOnInit() {
		if (this.isAuthenticated()) {
			const fields: Array<string> = ["-modified"];
			const dmpDataTableRequest: DataTableRequest<DmpCriteria> = new DataTableRequest(0, 5, { fields: fields });
			dmpDataTableRequest.criteria = new DmpCriteria();
			dmpDataTableRequest.criteria.like = "";
			this.dmpService
				.getPaged(dmpDataTableRequest, "listing")
				.subscribe(response => {
					this.dmpActivities = response.data;
				});
		}
	}

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

	editClicked(dmp: DmpListingModel) {
		this.router.navigate(['/plans/edit/' + dmp.id]);
	}

	cloneClicked(dmp: DmpListingModel) {
		this.router.navigate(['/plans/clone/' + dmp.id]);
	}

	deleteClicked(dmp: DmpListingModel) {
		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.dmpService.delete(dmp.id)
					.pipe(takeUntil(this._destroyed))
					.subscribe(
					complete => { this.onCallbackSuccess() },
					error => this.onDeleteCallbackError(error)
					);
			}
		});
	}

	advancedClicked(dmp: DmpListingModel) {
		const dialogRef = this.dialog.open(ExportMethodDialogComponent, {
			maxWidth: '500px',
			data: {
				message: "Download as:",
				XMLButton: "XML",
				documentButton: "Document",
				pdfButton: "PDF",
				jsonButton: "JSON"

			}
		});
		dialogRef.afterClosed().pipe(takeUntil(this._destroyed)).subscribe(result => {
			if (result == "pdf") {
				this.downloadPDF(dmp.id);
			} else if (result == "xml") {
				this.downloadXml(dmp.id);
			} else if (result == "doc") {
				this.downloadDocx(dmp.id);
			} else if (result == "json") {
				this.downloadJson(dmp.id)
			}
		});
	}

	onCallbackSuccess(): void {
		this.uiNotificationService.snackBarNotification(this.language.instant('GENERAL.SNACK-BAR.SUCCESSFUL-UPDATE'), SnackBarNotificationLevel.Success);
		this.router.navigate(['/plans']);
	}

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

	redirect(id: string, type: RecentActivityType) {
		switch (type) {
			case RecentActivityType.Grant: {
				this.router.navigate(["grants/edit/" + id]);
				return;
			}
			case RecentActivityType.Dataset: {
				this.router.navigate(["datasets/edit/" + id]);
				return;
			}
			case RecentActivityType.Dmp: {
				this.router.navigate(["plans/overview/" + id]);
				return;
			}
			default:
				throw new Error("Unsupported Activity Type ");
		}
	}

	navigateToUrl() {
		this.router.navigate(["plans/"]);
	}

	roleDisplay(value: any) {
		const principal: Principal = this.authentication.current();
		let role: number;
		if (principal) {
			value.forEach(element => {
				if (principal.id === element.id) {
					role = element.role;
				}
			});
		}
		if (role === 0) {
			return this.language.instant('DMP-LISTING.OWNER');
		}
		else if (role === 1) {
			return this.language.instant('DMP-LISTING.MEMBER');
		}
		else {
			return this.language.instant('DMP-LISTING.OWNER');
		}
	}

	dmpProfileDisplay(value: any) {
		if (value != null) {
			return value;
		}
		else {
			return "--";
		}
	}

	downloadXml(id: string) {
		this.dmpService.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);
			});
	}

	downloadDocx(id: string) {
		this.dmpService.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);
			});
	}

	downloadPDF(id: string) {
		this.dmpService.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);
			});
	}

	downloadJson(id: string) {
		this.dmpService.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;
	}
}