import { AfterViewInit, Component, ViewContainerRef, ViewEncapsulation } from '@angular/core';
import { FormControl, FormGroup } from '@angular/forms';
import { MatDialog, MatSnackBar } from '@angular/material';
import { ActivatedRoute, Params, Router } from '@angular/router';
import { TdDialogService } from '@covalent/core';
import { TranslateService } from '@ngx-translate/core';
import * as FileSaver from 'file-saver';
import { Observable } from 'rxjs';
import { takeUntil } from 'rxjs/operators';
import { BaseComponent } from '../../core/common/base/base.component';
import { BaseCriteria } from '../../models/criteria/BaseCriteria';
import { DatasetProfileCriteria } from '../../models/criteria/dataset-profile/DatasetProfileCriteria';
import { DataManagementPlanProfileCriteria } from '../../models/criteria/dmp-profile/DataManagementPlanProfileCriteria';
import { ProjectCriteria } from '../../models/criteria/project/ProjectCriteria';
import { RequestItem } from '../../models/criteria/RequestItem';
import { DataManagementPlanProfileListingModel } from '../../models/data-management-plan-profile/DataManagementPlanProfileListingModel';
import { DataManagementPlanModel, DataManagementPlanStatus } from '../../models/data-managemnt-plans/DataManagementPlanModel';
import { DatasetListingModel } from '../../models/datasets/DatasetListingModel';
import { DatasetProfileModel } from '../../models/datasets/DatasetProfileModel';
import { DmpUsersModel } from '../../models/dmpUsers/DmpUsersModel';
import { BaseErrorModel } from '../../models/error/BaseErrorModel';
import { ExternalSourcesItemModel } from '../../models/external-sources/ExternalSourcesItemModel';
import { DataManagementPlanProfileService } from '../../services/data-management-plan-profile/datamanagement-profile.service';
import { DataManagementPlanService } from '../../services/data-management-plan/data-management-plan.service';
import { ExternalSourcesService } from '../../services/external-sources/external-sources.service';
import { LanguageResolverService } from '../../services/language-resolver/language-resolver.service';
import { ProjectService } from '../../services/project/project.service';
import { AddResearchersComponent } from '../../shared/components/add-researchers/add-researchers.component';
import { MultipleAutoCompleteConfiguration } from '../../shared/components/autocompletes/multiple/multiple-auto-complete-configuration';
import { SingleAutoCompleteConfiguration } from '../../shared/components/autocompletes/single/single-auto-complete-configuration';
import { AvailableProfilesComponent } from '../../shared/components/available-profiles/available-profiles.component';
import { BreadcrumbItem } from '../../shared/components/breadcrumb/definition/breadcrumb-item';
import { IBreadCrumbComponent } from '../../shared/components/breadcrumb/definition/IBreadCrumbComponent';
import { SnackBarNotificationComponent } from '../../shared/components/notificaiton/snack-bar-notification.component';
import { JsonSerializer } from '../../utilities/JsonSerializer';
import { DMPFinaliseDialogComponent } from './dmp-finalise-dialog/dmp-finalise-dialog.component';

@Component({
	selector: 'app-dmp-editor-component',
	templateUrl: 'dmp-editor.component.html',
	styleUrls: ['./dmp-editor.component.scss'],
	encapsulation: ViewEncapsulation.None
})
export class DataManagementPlanEditorComponent extends BaseComponent implements AfterViewInit, IBreadCrumbComponent {

	editMode = true;

	breadCrumbs: Observable<BreadcrumbItem[]>;
	isNew = true;
	textCtrl = new FormControl();
	dataManagementPlan: DataManagementPlanModel;
	formGroup: FormGroup = null;

	filteringOrganisationsAsync = false;
	filteringResearchersAsync = false;
	filteredProfilesAsync = false;
	filteredOrganisations: ExternalSourcesItemModel[];
	filteredResearchers: ExternalSourcesItemModel[];
	filteredProfiles: DatasetProfileModel[];

	projectAutoCompleteConfiguration: SingleAutoCompleteConfiguration;
	profilesAutoCompleteConfiguration: MultipleAutoCompleteConfiguration;
	organisationsAutoCompleteConfiguration: MultipleAutoCompleteConfiguration;
	researchersAutoCompleteConfiguration: MultipleAutoCompleteConfiguration;

	createNewVersion;
	associatedUsers: Array<DmpUsersModel>;
	filteredOptions: Observable<DataManagementPlanProfileListingModel>;

	constructor(
		private dmpProfileService: DataManagementPlanProfileService,
		private dataManagementPlanService: DataManagementPlanService,
		private projectService: ProjectService,
		private externalSourcesService: ExternalSourcesService,
		private route: ActivatedRoute,
		public snackBar: MatSnackBar,
		public router: Router,
		public language: TranslateService,
		private _service: DataManagementPlanService,
		public dialog: MatDialog,
		private _dialogService: TdDialogService,
		private _viewContainerRef: ViewContainerRef,
		private languageResolverService: LanguageResolverService
	) {
		super();
		this.filteredOptions = dmpProfileService.getAll({ criteria: new DataManagementPlanProfileCriteria() });
	}

	ngAfterViewInit() {
		this.route.params
			.pipe(takeUntil(this._destroyed))
			.subscribe((params: Params) => {
				const itemId = params['id'];

				const projectRequestItem: RequestItem<ProjectCriteria> = new RequestItem();
				projectRequestItem.criteria = new ProjectCriteria();
				const organisationRequestItem: RequestItem<BaseCriteria> = new RequestItem();
				organisationRequestItem.criteria = new BaseCriteria();



				this.projectAutoCompleteConfiguration = {
					filterFn: this.searchProject.bind(this),
					items: this.searchProject(''),
					displayFn: (item) => item['label'],
					titleFn: (item) => item['label'],
					//mapFn: (item) => new JsonSerializer<ProjectReference>().fromJSONArray(item, ProjectReference).map(item => item.toDropdownList()),
					loadDataOnStart: true
				};

				this.profilesAutoCompleteConfiguration = {
					filterFn: this.filterProfiles.bind(this),
					initialItems: (excludedItems: any[]) => this.filterProfiles('').map(result => result.filter(resultItem => excludedItems.map(x => x.id).indexOf(resultItem.id) === -1)),
					displayFn: (item) => item['label'],
					titleFn: (item) => item['label'],
					//mapFn: (item) => new JsonSerializer<ProjectReference>().fromJSONArray(item, ProjectReference).map(item => item.toDropdownList()),
					loadDataOnStart: true
				};

				this.organisationsAutoCompleteConfiguration = {
					filterFn: this.filterOrganisations.bind(this),
					initialItems: (excludedItems: any[]) => this.filterOrganisations('').map(result => result.filter(resultItem => excludedItems.map(x => x.id).indexOf(resultItem.id) === -1)),
					displayFn: (item) => item['name'],
					titleFn: (item) => item['name'],
					loadDataOnStart: true
				};

				this.researchersAutoCompleteConfiguration = {
					filterFn: this.filterResearchers.bind(this),
					initialItems: (excludedItems: any[]) => this.filterResearchers('').map(result => result.filter(resultItem => excludedItems.map(x => x.id).indexOf(resultItem.id) === -1)),
					displayFn: (item) => item['name'],
					titleFn: (item) => item['name'],
					loadDataOnStart: true
				};

				if (itemId != null) {
					this.isNew = false;
					this.dataManagementPlanService.getSingle(itemId).map(data => data as DataManagementPlanModel)
						.pipe(takeUntil(this._destroyed))
						.subscribe(async data => {
							this.dataManagementPlan = JsonSerializer.fromJSONObject(data, DataManagementPlanModel);
							this.formGroup = this.dataManagementPlan.buildForm();
							this.editMode = this.dataManagementPlan.status !== 1;
							if (!this.editMode) { this.formGroup.disable(); }
							if (this.formGroup.get('profile') && this.formGroup.get('profile').value) {
								this.textCtrl.patchValue(this.formGroup.get('profile').value);
							}
							this.breadCrumbs = Observable.of([
								{
									parentComponentName: 'DataManagementPlanListingComponent',
									label: 'DMPs',
									url: 'dmps',
									notFoundResolver: [await this.projectService.getSingle(this.dataManagementPlan.project.id).map(x => ({ label: x.label, url: '/projects/edit/' + x.id }) as BreadcrumbItem).toPromise()]
								}]
							);
							this.associatedUsers = data.associatedUsers;
						});
				} else {
					this.dataManagementPlan = new DataManagementPlanModel();
					setTimeout(async () => {
						this.formGroup = this.dataManagementPlan.buildForm();
						if (this.formGroup.get('profile') && this.formGroup.get('profile').value) {
							this.textCtrl.patchValue(this.formGroup.get('profile').value);
						}
						this.breadCrumbs = Observable.of([
							{
								parentComponentName: 'DataManagementPlanListingComponent',
								label: 'DMPs',
								url: 'dmps',
							}
						]);
					});
				}

			});
		this.route
			.queryParams
			.pipe(takeUntil(this._destroyed))
			.subscribe(params => {
				this.createNewVersion = params['clone'];
			});
	}

	searchProject(query: string) {
		const projectRequestItem: RequestItem<ProjectCriteria> = new RequestItem();
		projectRequestItem.criteria = new ProjectCriteria();
		projectRequestItem.criteria.like = query;
		return this.projectService.getWithExternal(projectRequestItem);
	}

	formSubmit(): void {
		//this.touchAllFormFields(this.formGroup);
		if (!this.isFormValid()) { return; }
		this.onSubmit();
	}

	public isFormValid() {
		return this.formGroup.valid;
	}

	onSubmit(): void {
		this.dataManagementPlanService.createDataManagementPlan(this.formGroup.value)
			.pipe(takeUntil(this._destroyed))
			.subscribe(
				complete => this.onCallbackSuccess(),
				error => this.onCallbackError(error)
			);
	}

	onCallbackSuccess(): void {
		this.snackBar.openFromComponent(SnackBarNotificationComponent, {
			data: { message: this.isNew ? 'GENERAL.SNACK-BAR.SUCCESSFUL-CREATION' : 'GENERAL.SNACK-BAR.SUCCESSFUL-UPDATE', language: this.language },
			duration: 3000,
		});
		this.router.navigate(['/dmps']);
	}

	onCallbackError(error: any) {
		this.setErrorModel(error.error);
		//this.validateAllFormFields(this.formGroup);
	}

	public setErrorModel(errorModel: BaseErrorModel) {
		Object.keys(errorModel).forEach(item => {
			(<any>this.dataManagementPlan.errorModel)[item] = (<any>errorModel)[item];
		});
	}

	public cancel(): void {
		this.router.navigate(['/dmps']);
	}

	public invite(): void {
		this.router.navigate(['/invite/' + this.dataManagementPlan.id]);
	}

	filterOrganisations(value: string): Observable<ExternalSourcesItemModel[]> {

		this.filteredOrganisations = undefined;
		this.filteringOrganisationsAsync = true;

		return this.externalSourcesService.searchDMPOrganizations(value);
	}

	filterResearchers(value: string): Observable<ExternalSourcesItemModel[]> {

		this.filteredResearchers = undefined;
		this.filteringResearchersAsync = true;

		return this.externalSourcesService.searchDMPResearchers({ criteria: { name: value, like: null } });
	}

	filterProfiles(value: string): Observable<DatasetProfileModel[]> {

		this.filteredProfiles = undefined;
		this.filteredProfilesAsync = true;

		const request = new RequestItem<DatasetProfileCriteria>();
		const criteria = new DatasetProfileCriteria();
		criteria.like = value;
		request.criteria = criteria;
		return this._service.searchDMPProfiles(request);
	}

	addResearcher(rowId: any, rowName: any) {
		const dialogRef = this.dialog.open(AddResearchersComponent, {
			height: '255px',
			width: '700px',
			data: {
				dmpId: rowId,
				dmpName: rowName
			}
		});

	}

	availableProfiles() {
		const dialogRef = this.dialog.open(AvailableProfilesComponent, {
			height: '355px',
			width: '700px',
			data: {
				profiles: this.formGroup.get('profiles')
			}
		});

		return false;
	}

	openConfirm(dmpLabel, id): void {
		this._dialogService.openConfirm({
			message: 'Are you sure you want to delete the "' + dmpLabel + '"',
			disableClose: true || false,
			viewContainerRef: this._viewContainerRef,
			title: 'Confirm',
			cancelButton: 'No',
			acceptButton: 'Yes'
		}).afterClosed()
			.pipe(takeUntil(this._destroyed))
			.subscribe((accept: boolean) => {
				if (accept) {
					this.dataManagementPlanService.delete(id)
						.pipe(takeUntil(this._destroyed))
						.subscribe(() => {
							this.router.navigate(['/dmps']);
						});
				} else {
					// DO SOMETHING ELSE
				}
			});
	}


	selectOption(option: any) {
		this.dataManagementPlan.definition = null;
		this.formGroup.get('profile').patchValue(option, { emitEvent: false });
		this.dmpProfileService.getSingle(option.id)
			.pipe(takeUntil(this._destroyed))
			.subscribe(result => {
				this.dataManagementPlan.definition = result.definition;
			});
	}

	displayWith(item: any) {
		if (!item) { return null; }
		return item['label'];
	}

	redirectToProject() {
		this.router.navigate(['projects/edit/' + this.dataManagementPlan.project.id]);
	}

	redirectToDatasets() {
		this.router.navigate(['datasets/dmp/' + this.dataManagementPlan.id]);
	}

	newVersion(id: String, label: String) {
		this.router.navigate(['/dmps/new_version/' + id, { dmpLabel: label }]);
	}

	clone(id: String) {
		this.router.navigate(['/dmps/clone/' + id]);
	}

	viewVersions(rowId: String, rowLabel: String) {
		this.router.navigate(['/dmps/viewversions/' + rowId], { queryParams: { groupLabel: rowLabel } });
	}

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

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

	downloadPDF(id: string) {
		this.dataManagementPlanService.downloadPDF(id)
			.pipe(takeUntil(this._destroyed))
			.subscribe(response => {
				const blob = new Blob([response.body], { type: 'application/octet-stream' });
				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;
	}

	public enableForm() {
		if (this.formGroup.get('status').value !== DataManagementPlanStatus.Finalised) {
			this.editMode = true;
			this.formGroup.enable();
		} else {
			this.dataManagementPlanService.unlock(this.formGroup.get('id').value)
				.pipe(takeUntil(this._destroyed))
				.subscribe(x => {
					this.editMode = true;
					this.formGroup.get('status').patchValue(DataManagementPlanStatus.Draft);
					this.formGroup.enable();
				});
		}
	}

	public disableForm() {
		this.editMode = false;
		this.formGroup.disable();
	}

	saveAndFinalize() {
		const dialogRef = this.dialog.open(DMPFinaliseDialogComponent, {
			data: {
				submitFunction: (items: DatasetListingModel[]) => {
					this.formGroup.get('status').setValue('1');
					this.formGroup.addControl('datasets', new FormControl(items));
					this.formSubmit();
					dialogRef.close();
				},
				dmp: this.dataManagementPlan
			}
		});
	}


}