import { AfterViewInit, Component, OnInit, ViewChild, ViewEncapsulation } from '@angular/core';
import { FormArray, FormBuilder, FormGroup } from '@angular/forms';
import { MatDialog, MatSnackBar, MatStepper } from '@angular/material';
import { ActivatedRoute, Params, Router } from '@angular/router';
import { TranslateService } from '@ngx-translate/core';
import * as FileSaver from 'file-saver';
import { BehaviorSubject, Observable } from 'rxjs';
import { takeUntil } from 'rxjs/operators';
import { BaseComponent } from '../../core/common/base/base.component';
import { DataManagementPlanCriteria } from '../../models/criteria/data-management-plan/DataManagementPlanCriteria';
import { DataRepositoryCriteria } from '../../models/criteria/data-repository/DataRepositoryCriteria';
import { DatasetProfileCriteria } from '../../models/criteria/dataset-profile/DatasetProfileCriteria';
import { ExternalDatasetCriteria } from '../../models/criteria/external-dataset/ExternalDatasetCriteria';
import { RegistryCriteria } from '../../models/criteria/registry/RegistryCriteria';
import { RequestItem } from '../../models/criteria/RequestItem';
import { ServicesCriteria } from '../../models/criteria/services/ServicesCriteria';
import { TagsCriteria } from '../../models/criteria/tags/TagsCriteria';
import { DataManagementPlanListingModel } from '../../models/data-managemnt-plans/DataManagementPlanListingModel';
import { DataManagementPlanModel } from '../../models/data-managemnt-plans/DataManagementPlanModel';
import { DataRepositoryModel } from '../../models/dataRepositories/DataRepositoryModel';
import { DatasetProfileModel } from '../../models/datasetprofile/DatasetProfileModel';
import { DatasetProfileDefinitionModel } from '../../models/DatasetProfileDefinitionModel';
import { DatasetStatus, DatasetWizardModel } from '../../models/datasets/DatasetWizardModel';
import { BaseErrorModel } from '../../models/error/BaseErrorModel';
import { ExternalDatasetModel } from '../../models/external-dataset/ExternalDatasetModel';
import { ExternalSourcesConfiguration } from '../../models/external-sources/ExternalSourcesConfiguration';
import { RegisterModel } from '../../models/registers/RegisterModel';
import { ServiceModel } from '../../models/services/ServiceModel';
import { TagModel } from '../../models/tags/TagModel';
import { DataManagementPlanService } from '../../services/data-management-plan/data-management-plan.service';
import { DatasetWizardService } from '../../services/dataset-wizard/dataset-wizard.service';
import { DatasetService } from '../../services/dataset/dataset.service';
import { ExternalSourcesConfigurationService } from '../../services/external-sources/external-sources-configuration.service';
import { ExternalSourcesService } from '../../services/external-sources/external-sources.service';
import { AutoCompleteConfiguration } from '../../shared/components/auto-complete/AutoCompleteConfiguration';
import { SingleAutoCompleteConfiguration } from '../../shared/components/autocompletes/single/single-auto-complete-configuration';
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 { DataRepositoryReferencedModelHelperComponent } from '../dataset-referenced-models-helper/datarepository/datarepository-referenced-model-helper.component';
import { ExternalDatasetReferencedModelHelperComponent } from '../dataset-referenced-models-helper/externalDataset/externaldataset-referenced-model-helper.component';
import { RegistryReferencedModelHelperComponent } from '../dataset-referenced-models-helper/registry/registry-referenced-model-helper.component';
import { ServicesReferencedModelHelperComponent } from '../dataset-referenced-models-helper/services/services-referenced-model-helper.component';

@Component({
	selector: 'app-dataset-wizard-component',
	templateUrl: 'dataset-wizard.component.html',
	styleUrls: ['./dataset-wizard.component.scss'],
	encapsulation: ViewEncapsulation.None,
})
export class DatasetWizardComponent extends BaseComponent implements OnInit, AfterViewInit, IBreadCrumbComponent {
	breadCrumbs: Observable<BreadcrumbItem[]>;
	viewOnly = false;
	@ViewChild('stepper') stepper: MatStepper;
	editMode = false;

	//autocomplete Display Functions;
	//autocomplete Configurations;
	DatasetStatus = DatasetStatus;
	externalDatasetAutoCompleteConfiguration: AutoCompleteConfiguration;
	registriesAutoCompleteConfiguration: AutoCompleteConfiguration;
	dataRepositoriesAutoCompleteConfiguration: AutoCompleteConfiguration;
	servicesAutoCompleteConfiguration: AutoCompleteConfiguration;
	tagsAutoCompleteConfiguration: AutoCompleteConfiguration;
	dmpAutoCompleteConfiguration: SingleAutoCompleteConfiguration;

	externalSourcesConfiguration: ExternalSourcesConfiguration;

	datasetWizardModel: DatasetWizardModel;
	isNew = true;
	formGroup: FormGroup;
	datasetProfileDefinitionModel: DatasetProfileDefinitionModel;

	availableProfiles: DatasetProfileModel[] = [];
	itemId: string;
	isLinear = false;
	firstStepFormGroup: FormGroup;
	secondFormGroup: FormGroup;

	externalDatasetDisplayFunc = (item) => item ? item.label : null;
	registriesDisplayFunc = (item) => item ? item.label : null;
	dataRepositoryDisplayFunc = (item) => item ? item.name : null;
	servicesDisplayFunc = (item) => item ? item.label : null;
	tagsDisplayFunc = (item) => item ? item.name : null;
	externalDatasetDisplaySubtitleFunc = (item) => item ? item.tag : null;
	registriesDisplaySubtitleFunc = (item) => item ? item.tag : null;
	dataRepositoryDisplaySubtitleFunc = (item) => item ? item.tag : null;
	servicesDisplaySubtitleFunc = (item) => item ? item.tag : null;
	tagsDisplaySubtitleFunc = (item) => item ? item.tag : null;

	constructor(
		private datasetWizardService: DatasetWizardService,
		private formBuilder: FormBuilder,
		private datasetService: DatasetService,
		private route: ActivatedRoute,
		public snackBar: MatSnackBar,
		public router: Router,
		public language: TranslateService,
		public externalSourcesService: ExternalSourcesService,
		public dataManagementPlanService: DataManagementPlanService,
		public dialog: MatDialog,
		public externalSourcesConfigurationService: ExternalSourcesConfigurationService
	) {
		super();
	}


	ngOnInit() {
		this.route
			.data
			.pipe(takeUntil(this._destroyed))
			.subscribe(v => this.viewOnly = v['public']);

		const dmpRequestItem: RequestItem<DataManagementPlanCriteria> = new RequestItem();
		dmpRequestItem.criteria = new DataManagementPlanCriteria();

		const externalDatasetRequestItem: RequestItem<ExternalDatasetCriteria> = new RequestItem();
		externalDatasetRequestItem.criteria = new ExternalDatasetCriteria();
		this.externalDatasetAutoCompleteConfiguration = new AutoCompleteConfiguration(this.externalSourcesService.searchDatasetSExternalDatasetservice.bind(this.externalSourcesService),
			externalDatasetRequestItem, new BehaviorSubject(false));

		const registriesRequestItem: RequestItem<RegistryCriteria> = new RequestItem();
		registriesRequestItem.criteria = new RegistryCriteria();
		this.registriesAutoCompleteConfiguration = new AutoCompleteConfiguration(this.externalSourcesService.searchDatasetRegistry.bind(this.externalSourcesService),
			registriesRequestItem, new BehaviorSubject(false));

		const dataRepositoriesRequestItem: RequestItem<DataRepositoryCriteria> = new RequestItem();
		dataRepositoriesRequestItem.criteria = new DataRepositoryCriteria();
		this.dataRepositoriesAutoCompleteConfiguration = new AutoCompleteConfiguration(this.externalSourcesService.searchDatasetRepository.bind(this.externalSourcesService),
			dataRepositoriesRequestItem, new BehaviorSubject(false));

		const servicesRequestItem: RequestItem<ServicesCriteria> = new RequestItem();
		servicesRequestItem.criteria = new ServicesCriteria();
		this.servicesAutoCompleteConfiguration = new AutoCompleteConfiguration(this.externalSourcesService.searchDatasetService.bind(this.externalSourcesService),
			servicesRequestItem, new BehaviorSubject(false));

		const tagsRequestItem: RequestItem<TagsCriteria> = new RequestItem();
		tagsRequestItem.criteria = new TagsCriteria();
		this.tagsAutoCompleteConfiguration = new AutoCompleteConfiguration(this.externalSourcesService.searchDatasetTags.bind(this.externalSourcesService),
			tagsRequestItem, new BehaviorSubject(false));

		this.externalSourcesConfigurationService.getExternalSourcesConfiguration()
			.pipe(takeUntil(this._destroyed))
			.subscribe(result => {
				this.externalSourcesConfiguration = result;
				this.externalSourcesConfiguration.dataRepositories.push({ key: '', label: 'All' });
				this.externalSourcesConfiguration.externalDatasets.push({ key: '', label: 'All' });
				this.externalSourcesConfiguration.registries.push({ key: '', label: 'All' });
				this.externalSourcesConfiguration.services.push({ key: '', label: 'All' });
				this.externalSourcesConfiguration.tags.push({ key: '', label: 'All' });
			});

		this.dmpAutoCompleteConfiguration = {
			filterFn: this.searchDmp.bind(this),
			items: this.searchDmp(''),
			displayFn: (item) => item['label'],
			titleFn: (item) => item['label'],
			loadDataOnStart: true
		};

		const params = this.route.snapshot.params;
		this.itemId = params['id'];
		const dmpId = params['dmpId'];
		if (this.itemId != null) {
			this.isNew = false;
			this.datasetWizardService.getSingle(this.itemId).map(data => data as DatasetWizardModel)
				.pipe(takeUntil(this._destroyed))
				.subscribe(data => {
					this.datasetWizardModel = JsonSerializer.fromJSONObject(data, DatasetWizardModel);
					this.breadCrumbs = Observable.of([
						{
							parentComponentName: null,
							label: 'Datasets',
							url: '/datasets',
							notFoundResolver: [
								{
									parentComponentName: null,
									label: this.datasetWizardModel.dmp.project.label,
									url: '/projects/edit/' + this.datasetWizardModel.dmp.project.id
								},
								{
									parentComponentName: null,
									label: this.datasetWizardModel.dmp.label,
									url: '/dmps/edit/' + this.datasetWizardModel.dmp.id,
								},
							]
						}]);
					this.formGroup = this.datasetWizardModel.buildForm();
					this.editMode = this.datasetWizardModel.status === DatasetStatus.Draft;
					if (this.datasetWizardModel.status === 1) {
						this.formGroup.disable();
						this.viewOnly = true;
					}
					if (this.viewOnly) { this.formGroup.disable(); }
					this.loadDatasetProfiles();
				});
		} else if (dmpId != null) {
			this.isNew = true;
			this.dataManagementPlanService.getSingle(dmpId).map(data => data as DataManagementPlanModel)
				.pipe(takeUntil(this._destroyed))
				.subscribe(data => {
					this.datasetWizardModel = new DatasetWizardModel();
					setTimeout(() => {
						this.datasetWizardModel.dmp = data;
						this.formGroup = this.datasetWizardModel.buildForm();
						this.editMode = this.datasetWizardModel.status === DatasetStatus.Draft;
						if (this.datasetWizardModel.status === 1) {
							this.formGroup.disable();
							this.viewOnly = true;
						}
						this.loadDatasetProfiles();
						this.breadCrumbs = Observable.of([
							{
								parentComponentName: null,
								label: 'Datasets',
								url: '/datasets',
								notFoundResolver: [
									{
										parentComponentName: null,
										label: this.datasetWizardModel.dmp.project.label,
										url: '/projects/edit/' + this.datasetWizardModel.dmp.project.id
									},
									{
										parentComponentName: null,
										label: this.datasetWizardModel.dmp.label,
										url: '/dmps/edit/' + this.datasetWizardModel.dmp.id,
									}]
							}]);
					});
				});
		} else {
			this.datasetWizardModel = new DatasetWizardModel();
			this.formGroup = this.datasetWizardModel.buildForm();
			this.editMode = this.datasetWizardModel.status === DatasetStatus.Draft;
			if (this.datasetWizardModel.status === 1) {
				this.formGroup.disable();
				this.viewOnly = true;
			}
			if (this.viewOnly) { this.formGroup.disable(); }
			this.formGroup.get('dmp').valueChanges
				.pipe(takeUntil(this._destroyed))
				.subscribe(x => {
					this.loadDatasetProfiles();
				});
		}
	}

	ngAfterViewInit() {
		this.route.params
			.pipe(takeUntil(this._destroyed))
			.subscribe((params: Params) => {
				const itemId = params['id'];
				if (itemId != null) { this.stepper.selectedIndex = 2; }
			});
	}

	searchDmp(query: string): Observable<DataManagementPlanListingModel[]> {
		const dmpRequestItem: RequestItem<DataManagementPlanCriteria> = new RequestItem();
		dmpRequestItem.criteria = new DataManagementPlanCriteria();
		dmpRequestItem.criteria.like = query;
		return this.dataManagementPlanService.get(dmpRequestItem);
	}

	loadDatasetProfiles() {
		const datasetProfileRequestItem: RequestItem<DatasetProfileCriteria> = new RequestItem();
		datasetProfileRequestItem.criteria = new DatasetProfileCriteria();
		datasetProfileRequestItem.criteria.id = this.formGroup.get('dmp').value.id;
		if (datasetProfileRequestItem.criteria.id) {
			this.datasetWizardService.getAvailableProfiles(datasetProfileRequestItem)
				.pipe(takeUntil(this._destroyed))
				.subscribe(items => {
					this.availableProfiles = JsonSerializer.fromJSONArray(items, DatasetProfileModel);
				});
		}
	}

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

	getDefinition() {
		if (this.formGroup.invalid) { this.stepper.selectedIndex = 0; return; }
		if (this.isNew) {
			this.datasetWizardService.getDefinition(this.formGroup.get('profile').get('id').value)
				.pipe(takeUntil(this._destroyed))
				.subscribe(item => {
					this.datasetWizardModel.datasetProfileDefinition = JsonSerializer.fromJSONObject(item, DatasetProfileDefinitionModel);
					this.datasetProfileDefinitionModel = this.datasetWizardModel.datasetProfileDefinition;
					this.formGroup.addControl('datasetProfileDefinition', this.datasetProfileDefinitionModel.buildForm());
				});
		}
	}


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

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

	onSubmit(): void {
		this.datasetWizardService.createDataset(this.formGroup.value)
			.pipe(takeUntil(this._destroyed))
			.subscribe(
				complete => {
					this.datasetWizardService.getSingle(complete.id)
						.pipe(takeUntil(this._destroyed))
						.subscribe(
							result => {
								this.datasetWizardModel = JsonSerializer.fromJSONObject(result, DatasetWizardModel);
							}
						);
					this.onCallbackSuccess();
				},
				error => this.onCallbackError(error)
			);
	}

	submit() {
		this.datasetWizardService.createDataset(this.formGroup.value)
			.pipe(takeUntil(this._destroyed))
			.subscribe(data => {
				this.router.navigateByUrl('/datasets/dmp/' + this.formGroup.get('dmp').value.id);
			});
	}


	save() {
		if (!this.isFormValid()) { return; }
		this.formGroup.get('status').setValue('0');
		this.submit();
	}

	saveFinalize() {
		if (!this.isFormValid()) { return; }
		this.formGroup.get('status').setValue('1');
		this.submit();
	}

	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,
		});
	}

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

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

	downloadPDF(): void {
		this.datasetWizardService.downloadPDF(this.itemId)
			.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);
			});
	}

	downloadXML(): void {
		this.datasetWizardService.downloadXML(this.itemId)
			.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);
			});
	}

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

	public redirectToDmp() {
		this.router.navigate(['dmps/edit/' + this.datasetWizardModel.dmp.id]);
	}

	externalDatasetsOnItemChange(event) {
		const externalDatasetModel = new ExternalDatasetModel(event.id, event.abbreviation, event.label, event.reference);
		(<FormArray>this.formGroup.get('externalDatasets')).push(externalDatasetModel.buildForm());
	}

	registriesOnItemChange(event) {
		const registryModel = new RegisterModel(event.abbreviation, event.definition, event.id, event.label, event.reference, event.uri);
		(<FormArray>this.formGroup.get('registries')).push(registryModel.buildForm());
	}

	servicesOnItemChange(event) {
		const serviceModel = new ServiceModel(event.abbreviation, event.definition, event.id, event.label, event.reference, event.uri);
		(<FormArray>this.formGroup.get('services')).push(serviceModel.buildForm());
	}

	tagsOnItemChange(event) {
		const serviceModel = new TagModel(event.id, event.name);
		(<FormArray>this.formGroup.get('tags')).push(serviceModel.buildForm());
	}


	dataRepositoriesOnItemChange(event) {
		const dataRepositoryModel = new DataRepositoryModel(event.id, event.name, event.abbreviation, event.uri, event.pid);
		(<FormArray>this.formGroup.get('dataRepositories')).push(dataRepositoryModel.buildForm());
	}

	addDataRepository() {
		const dialogRef = this.dialog.open(DataRepositoryReferencedModelHelperComponent, {
			height: '255px',
			width: '700px',
			data: {

			}
		});
		dialogRef.afterClosed()
			.pipe(takeUntil(this._destroyed))
			.subscribe(result => {
				if (!result) { return; }
				const dataRepositoryModel = new DataRepositoryModel(result.id, result.label, result.pid, result.uri, result.reference);
				(<FormArray>this.formGroup.get('dataRepositories')).push(dataRepositoryModel.buildForm());
			});
	}

	addRegistry() {
		const dialogRef = this.dialog.open(RegistryReferencedModelHelperComponent, {
			height: '255px',
			width: '700px',
			data: {

			}
		});
		dialogRef.afterClosed()
			.pipe(takeUntil(this._destroyed))
			.subscribe(result => {
				if (!result) { return; }
				const registryModel = new RegisterModel(result.abbreviation, result.definition, result.id, result.label, result.reference, result.uri);
				(<FormArray>this.formGroup.get('registries')).push(registryModel.buildForm());
			});
	}

	addExternalDataset() {
		const dialogRef = this.dialog.open(ExternalDatasetReferencedModelHelperComponent, {
			height: '255px',
			width: '700px',
			data: {

			}
		});
		dialogRef.afterClosed()
			.pipe(takeUntil(this._destroyed))
			.subscribe(result => {
				if (!result) { return; }
				const externalDatasetModel = new ExternalDatasetModel(result.id, result.abbreviation, result.label, result.reference);
				(<FormArray>this.formGroup.get('externalDatasets')).push(externalDatasetModel.buildForm());
			});
	}

	addService() {
		const dialogRef = this.dialog.open(ServicesReferencedModelHelperComponent, {
			height: '255px',
			width: '700px',
			data: {

			}
		});
		dialogRef.afterClosed()
			.pipe(takeUntil(this._destroyed))
			.subscribe(result => {
				if (!result) { return; }
				const serviceModel = new ServiceModel(result.id, result.abbreviation, result.definition, result.uri, result.label, result.reference);
				(<FormArray>this.formGroup.get('services')).push(serviceModel.buildForm());
			});
	}

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

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

	isActiveStep(index: number) {
		return this.stepper.selectedIndex === index;
	}
}