import { Component, OnInit, ViewContainerRef } from '@angular/core';
import { FormControl, FormGroup } from '@angular/forms';
import { MatDialog, MatSnackBar } from '@angular/material';
import { ActivatedRoute, Params, Router } from '@angular/router';
import { TranslateService } from '@ngx-translate/core';
import * as FileSaver from 'file-saver';
import { Observable } from 'rxjs';
import { takeUntil } from 'rxjs/operators';
import { ValidationErrorModel } from '../../../common/forms/validation/error-model/validation-error-model';
import { BaseComponent } from '../../../core/common/base/base.component';
import { DmpStatus } from '../../../core/common/enum/dmp-status';
import { Status } from '../../../core/common/enum/Status';
import { DataTableRequest } from '../../../core/model/data-table/data-table-request';
import { DatasetListingModel } from '../../../core/model/dataset/dataset-listing';
import { DatasetProfileModel } from '../../../core/model/dataset/dataset-profile';
import { DmpProfileDefinition } from '../../../core/model/dmp-profile/dmp-profile';
import { DmpProfileListing } from '../../../core/model/dmp-profile/dmp-profile-listing';
import { DmpModel } from '../../../core/model/dmp/dmp';
import { ExternalSourceItemModel } from '../../../core/model/external-sources/external-source-item';
import { ProjectListingModel } from '../../../core/model/project/project-listing';
import { UserModel } from '../../../core/model/user/user';
import { BaseCriteria } from '../../../core/query/base-criteria';
import { DatasetProfileCriteria } from '../../../core/query/dataset-profile/dataset-profile-criteria';
import { DmpProfileCriteria } from '../../../core/query/dmp/dmp-profile-criteria';
import { ProjectCriteria } from '../../../core/query/project/project-criteria';
import { RequestItem } from '../../../core/query/request-item';
import { DmpProfileService } from '../../../core/services/dmp/dmp-profile.service';
import { DmpService } from '../../../core/services/dmp/dmp.service';
import { ExternalSourcesService } from '../../../core/services/external-sources/external-sources.service';
import { SnackBarNotificationLevel, UiNotificationService } from '../../../core/services/notification/ui-notification-service';
import { ProjectService } from '../../../core/services/project/project.service';
import { MultipleAutoCompleteConfiguration } from '../../../library/auto-complete/multiple/multiple-auto-complete-configuration';
import { SingleAutoCompleteConfiguration } from '../../../library/auto-complete/single/single-auto-complete-configuration';
import { ConfirmationDialogComponent } from '../../../library/confirmation-dialog/confirmation-dialog.component';
import { LanguageResolverService } from '../../../services/language-resolver/language-resolver.service';
import { BreadcrumbItem } from '../../misc/breadcrumb/definition/breadcrumb-item';
import { IBreadCrumbComponent } from '../../misc/breadcrumb/definition/IBreadCrumbComponent';
import { AddResearcherComponent } from './add-researcher/add-researcher.component';
import { AvailableProfilesComponent } from './available-profiles/available-profiles.component';
import { DmpEditorModel } from './dmp-editor.model';
import { DmpFinalizeDialogComponent } from './dmp-finalize-dialog/dmp-finalize-dialog.component';
import { AuthService } from '../../../core/services/auth/auth.service';

@Component({
	selector: 'app-dmp-editor-component',
	templateUrl: 'dmp-editor.component.html',
	styleUrls: ['./dmp-editor.component.scss']
})
export class DmpEditorComponent extends BaseComponent implements OnInit, IBreadCrumbComponent {

	editMode = false;

	breadCrumbs: Observable<BreadcrumbItem[]>;
	isNew = true;
	isPublic = false;
	dmp: DmpEditorModel;
	formGroup: FormGroup = null;

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

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

	createNewVersion;
	associatedUsers: Array<UserModel>;
	filteredOptions: DmpProfileListing[];
	selectedDmpProfileDefinition: DmpProfileDefinition;
	DynamicDmpFieldResolverComponent: any;

	constructor(
		private dmpProfileService: DmpProfileService,
		private dmpService: DmpService,
		private projectService: ProjectService,
		private externalSourcesService: ExternalSourcesService,
		private route: ActivatedRoute,
		private snackBar: MatSnackBar,
		private router: Router,
		private language: TranslateService,
		private _service: DmpService,
		private dialog: MatDialog,
		private _viewContainerRef: ViewContainerRef,
		public languageResolverService: LanguageResolverService,
		private uiNotificationService: UiNotificationService,
		private authService: AuthService,
	) {
		super();
	}

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

				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),
					initialItems: (extraData) => this.searchProject(''),
					displayFn: (item) => item['label'],
					titleFn: (item) => item['label']
				};

				this.dmpProfileAutoCompleteConfiguration = {
					filterFn: this.dmpProfileSearch.bind(this),
					initialItems: (extraData) => this.dmpProfileSearch(''),
					displayFn: (item) => item['label'],
					titleFn: (item) => item['label']
				};

				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']
				};

				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']
				};

				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']
				};

				if (itemId != null) {
					this.isNew = false;
					this.dmpService.getSingle(itemId).map(data => data as DmpModel)
						.pipe(takeUntil(this._destroyed))
						.subscribe(async data => {
							this.dmp = new DmpEditorModel().fromModel(data);
							this.formGroup = this.dmp.buildForm();
							this.registerFormEventsForDmpProfile(this.dmp.definition);
							if (!this.editMode || this.dmp.status === Status.Inactive) { this.formGroup.disable(); }
							if (this.isAuthenticated) {
							// if (!this.isAuthenticated) {
								this.breadCrumbs = Observable.of([
									{
										parentComponentName: 'DmpListingComponent',
										label: 'DMPs',
										url: 'plans',
										notFoundResolver: [await this.projectService.getSingle(this.dmp.project.id).map(x => ({ label: x.label, url: '/projects/edit/' + x.id }) as BreadcrumbItem).toPromise()]
									}]
								);
							}
							this.associatedUsers = data.associatedUsers;
						});
				} else if (projectId != null) {
					this.isNew = true;
					this.projectService.getSingle(projectId).map(data => data as ProjectListingModel)
						.pipe(takeUntil(this._destroyed))
						.subscribe(data => {
							this.dmp = new DmpEditorModel();
							this.dmp.project = data;
							this.formGroup = this.dmp.buildForm();
							this.registerFormEventsForDmpProfile();
							this.formGroup.get('project').disable();
							this.registerFormEventsForNewItem();
						});
				} else if (publicId != null) {
					this.isNew = false;
					this.isPublic = true;
					this.dmpService.getSinglePublic(publicId).map(data => data as DmpModel)
						.pipe(takeUntil(this._destroyed))
						.subscribe(async data => {
							this.dmp = new DmpEditorModel().fromModel(data);
							this.formGroup = this.dmp.buildForm();
							this.registerFormEventsForDmpProfile(this.dmp.definition);
							if (!this.editMode || this.dmp.status === Status.Inactive) { this.formGroup.disable(); }
							if (this.isAuthenticated) {
							// if (!this.isAuthenticated) {
								this.breadCrumbs = Observable.of([
									{
										parentComponentName: 'DmpListingComponent',
										label: 'DMPs',
										url: 'plans',
										notFoundResolver: [await this.projectService.getSingle(this.dmp.project.id).map(x => ({ label: x.label, url: '/projects/edit/' + x.id }) as BreadcrumbItem).toPromise()]
									}]
								);
								this.associatedUsers = data.associatedUsers;
							}

						});
				} else {
					this.dmp = new DmpEditorModel();
					this.formGroup = this.dmp.buildForm();
					this.registerFormEventsForDmpProfile();
					this.registerFormEventsForNewItem();
				}
			});

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

	registerFormEventsForDmpProfile(definitionPropertys?: DmpProfileDefinition): void {
		this.formGroup.get('profile').valueChanges
			.pipe(takeUntil(this._destroyed))
			.subscribe(Option => {
				if (Option instanceof Object) {
					this.selectedDmpProfileDefinition = null;
					this.dmpProfileService.getSingle(Option.id)
						.pipe(takeUntil(this._destroyed))
						.subscribe(result => {
							this.selectedDmpProfileDefinition = result.definition;
						});
				} else {
					this.selectedDmpProfileDefinition = null;
				}
				this.selectedDmpProfileDefinition = definitionPropertys;
			})
	}

	isAuthenticated() {
		return this.authService.current() != null;
	}

	registerFormEventsForNewItem() {
		this.breadCrumbs = Observable.of([
			{
				parentComponentName: 'DmpListingComponent',
				label: 'DMPs',
				url: 'plans',
			}
		]);
	}

	dmpProfileSearch(query: string) {
		let fields: Array<string> = new Array();
		var request = new DataTableRequest<DmpProfileCriteria>(0, 10, { fields: fields });
		request.criteria = new DmpProfileCriteria();
		return this.dmpProfileService.getPaged(request).map(x => x.data);
	}

	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.dmpService.createDmp(this.formGroup.getRawValue())
			.pipe(takeUntil(this._destroyed))
			.subscribe(
			complete => this.onCallbackSuccess(),
			error => this.onCallbackError(error)
			);
	}

	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);
		this.router.navigate(['/plans']);
	}

	onCallbackError(error: any) {
		this.setErrorModel(error.error);

		//this.validateAllFormFields(this.formGroup);
	}

	public setErrorModel(validationErrorModel: ValidationErrorModel) {
		Object.keys(validationErrorModel).forEach(item => {
			(<any>this.dmp.validationErrorModel)[item] = (<any>validationErrorModel)[item];
		});
	}

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

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

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

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

		return this.externalSourcesService.searchDMPOrganizations(value);
	}

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

		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(AddResearcherComponent, {
			data: {
				dmpId: rowId,
				dmpName: rowName
			}
		});

	}

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

		return false;
	}

	public delete(): void {
		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.CONFIRM'),
				cancelButton: this.language.instant('GENERAL.CONFIRMATION-DIALOG.ACTIONS.CANCEL')
			}
		});
		dialogRef.afterClosed().pipe(takeUntil(this._destroyed)).subscribe(result => {
			if (result) {
				this.dmpService.delete(this.dmp.id)
					.pipe(takeUntil(this._destroyed))
					.subscribe(
					complete => { this.onCallbackSuccess() },
					error => this.onDeleteCallbackError(error)
					);
			}
		});
	}
	onDeleteCallbackError(error) {
		this.uiNotificationService.snackBarNotification(error.error.message ? error.error.message : this.language.instant('GENERAL.SNACK-BAR.UNSUCCESSFUL-DELETE'), SnackBarNotificationLevel.Error);
	}

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

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

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

	redirectToDatasets() {
		this.router.navigate(['datasets'], { queryParams: { dmpId: this.dmp.id } });
	}

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

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

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

	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);
			});
	}

	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 !== DmpStatus.Finalized) {
			this.editMode = true;
			this.formGroup.enable();
		}
		//else {
		// 	this.dmpService.unlock(this.formGroup.get('id').value)
		// 		.pipe(takeUntil(this._destroyed))
		// 		.subscribe(x => {
		// 			this.editMode = true;
		// 			this.formGroup.get('status').patchValue(DmpStatus.Draft);
		// 			this.formGroup.enable();
		// 		});
		// }
	}

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

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