import { FormControl, UntypedFormArray, UntypedFormBuilder, UntypedFormGroup, Validators } from "@angular/forms";
import { DescriptionStatus } from "@app/core/common/enum/description-status";
import { IsActive } from "@app/core/common/enum/is-active.enum";
import { DescriptionTemplate, DescriptionTemplateField, DescriptionTemplateFieldSet, DescriptionTemplateSection } from "@app/core/model/description-template/description-template";
import { Description, DescriptionExternalIdentifier, DescriptionExternalIdentifierPersist, DescriptionField, DescriptionFieldPersist, DescriptionPersist, DescriptionPropertyDefinition, DescriptionPropertyDefinitionFieldSet, DescriptionPropertyDefinitionFieldSetItem, DescriptionPropertyDefinitionFieldSetItemPersist, DescriptionPropertyDefinitionFieldSetPersist, DescriptionPropertyDefinitionPersist, DescriptionReference, DescriptionReferencePersist } from "@app/core/model/description/description";
import { ReferencePersist } from "@app/core/model/reference/reference";
import { BaseEditorModel } from "@common/base/base-form-editor-model";
import { BackendErrorValidator } from '@common/forms/validation/custom-validator';
import { ValidationErrorModel } from '@common/forms/validation/error-model/validation-error-model';
import { Validation, ValidationContext } from '@common/forms/validation/validation-context';
import { Guid } from "@common/types/guid";

export class DescriptionEditorModel extends BaseEditorModel implements DescriptionPersist {
	label: string;
	dmpId: Guid;
	dmpDescriptionTemplateId: Guid;
	descriptionTemplateId: Guid;
	status: DescriptionStatus;
	description: string;
	properties: DescriptionPropertyDefinitionEditorModel = new DescriptionPropertyDefinitionEditorModel(this.validationErrorModel);
	tags: string[] = [];
	references: DescriptionReferenceEditorModel[];
	permissions: string[];

	public validationErrorModel: ValidationErrorModel = new ValidationErrorModel();
	protected formBuilder: UntypedFormBuilder = new UntypedFormBuilder();

	constructor() { super(); }

	public fromModel(item: Description, descriptionTemplate?: DescriptionTemplate): DescriptionEditorModel {
		if (item) {
			super.fromModel(item);
			this.label = item.label;
			this.dmpId = item.dmp?.id;
			this.dmpDescriptionTemplateId = item.dmpDescriptionTemplate?.id;
			this.descriptionTemplateId = item.descriptionTemplate?.id;
			this.status = item.status ?? DescriptionStatus.Draft;
			this.description = item.description;
			this.tags = item.descriptionTags?.map(x => x.tag?.label);
			this.properties = new DescriptionPropertyDefinitionEditorModel(this.validationErrorModel).fromModel(item.properties, descriptionTemplate, item.descriptionReferences);
			//if (item.references) { item.references.map(x => this.references.push(new DescriptionReferenceEditorModel().fromModel(x))); }
		}
		return this;
	}

	buildForm(context: ValidationContext = null, disabled: boolean = false): UntypedFormGroup {
		if (context == null) { context = this.createValidationContext(); }

		return this.formBuilder.group({
			id: [{ value: this.id, disabled: disabled }, context.getValidation('id').validators],
			label: [{ value: this.label, disabled: disabled }, context.getValidation('label').validators],
			dmpId: [{ value: this.dmpId, disabled: disabled }, context.getValidation('dmpId').validators],
			dmpDescriptionTemplateId: [{ value: this.dmpDescriptionTemplateId, disabled: disabled }, context.getValidation('dmpDescriptionTemplateId').validators],
			descriptionTemplateId: [{ value: this.descriptionTemplateId, disabled: disabled }, context.getValidation('descriptionTemplateId').validators],
			status: [{ value: this.status, disabled: disabled }, context.getValidation('status').validators],
			description: [{ value: this.description, disabled: disabled }, context.getValidation('description').validators],
			tags: [{ value: this.tags, disabled: disabled }, context.getValidation('tags').validators],
			properties: this.buildProperties(),
			hash: [{ value: this.hash, disabled: disabled }, context.getValidation('hash').validators]
		});
	}

	buildProperties() {
		return this.properties.buildForm({
			rootPath: `properties.`
		});
	}

	createValidationContext(): ValidationContext {
		const baseContext: ValidationContext = new ValidationContext();
		const baseValidationArray: Validation[] = new Array<Validation>();
		baseValidationArray.push({ key: 'id', validators: [BackendErrorValidator(this.validationErrorModel, 'id')] });
		baseValidationArray.push({ key: 'label', validators: [Validators.required, BackendErrorValidator(this.validationErrorModel, 'label')] });
		baseValidationArray.push({ key: 'dmpId', validators: [Validators.required, BackendErrorValidator(this.validationErrorModel, 'dmpId')] });
		baseValidationArray.push({ key: 'dmpDescriptionTemplateId', validators: [Validators.required, BackendErrorValidator(this.validationErrorModel, 'dmpDescriptionTemplateId')] });
		baseValidationArray.push({ key: 'descriptionTemplateId', validators: [Validators.required, BackendErrorValidator(this.validationErrorModel, 'descriptionTemplateId')] });
		baseValidationArray.push({ key: 'status', validators: [Validators.required, BackendErrorValidator(this.validationErrorModel, 'status')] });
		baseValidationArray.push({ key: 'description', validators: [BackendErrorValidator(this.validationErrorModel, 'description')] });
		baseValidationArray.push({ key: 'tags', validators: [BackendErrorValidator(this.validationErrorModel, 'tags')] });
		baseValidationArray.push({ key: 'hash', validators: [] });

		baseContext.validation = baseValidationArray;
		return baseContext;
	}

	static reApplyPropertiesValidators(params: {
		formGroup: UntypedFormGroup,
		validationErrorModel: ValidationErrorModel,
	}): void {

		const { formGroup, validationErrorModel } = params;
		const control = formGroup?.get('properties');
		DescriptionPropertyDefinitionEditorModel.reapplyValidators({
			formGroup: control.get('fieldSets') as UntypedFormGroup,
			rootPath: `properties.`,
			validationErrorModel: validationErrorModel
		});
	}
}

export class DescriptionPropertyDefinitionEditorModel implements DescriptionPropertyDefinitionPersist {
	fieldSets: Map<string, DescriptionPropertyDefinitionFieldSetEditorModel> = new Map<string, DescriptionPropertyDefinitionFieldSetEditorModel>;
	protected formBuilder: UntypedFormBuilder = new UntypedFormBuilder();

	constructor(
		public validationErrorModel: ValidationErrorModel = new ValidationErrorModel()
	) { }

	public fromModel(item: DescriptionPropertyDefinition, descriptionTemplate: DescriptionTemplate, descriptionReferences: DescriptionReference[]): DescriptionPropertyDefinitionEditorModel {
		this.fieldSets = this.calculateProperties(item, descriptionTemplate, descriptionReferences);
		return this;
	}

	buildForm(params?: {
		context?: ValidationContext,
		disabled?: boolean,
		rootPath?: string
	}): UntypedFormGroup {
		let { context = null, disabled = false, rootPath } = params ?? {}
		if (context == null) {
			context = DescriptionPropertyDefinitionEditorModel.createValidationContext({
				validationErrorModel: this.validationErrorModel,
				rootPath
			});
		}


		const formGroup = this.formBuilder.group({});
		const fieldSetsFormGroup = this.formBuilder.group({});
		if (this.fieldSets.size > 0) {
			this.fieldSets.forEach((value, key) => fieldSetsFormGroup.addControl(key.toString(), value.buildForm({
				rootPath: `${rootPath}fieldSets[${key}].`
			})), context.getValidation('fieldSets'));
			formGroup.addControl('fieldSets', fieldSetsFormGroup);
		}
		return formGroup;
	}

	static createValidationContext(params: {
		rootPath?: string,
		validationErrorModel: ValidationErrorModel
	}): ValidationContext {
		const { rootPath = '', validationErrorModel } = params;

		const baseContext: ValidationContext = new ValidationContext();
		const baseValidationArray: Validation[] = new Array<Validation>();
		baseValidationArray.push({ key: 'fieldSets', validators: [BackendErrorValidator(validationErrorModel, `${rootPath}fieldSets`)] });

		baseContext.validation = baseValidationArray;
		return baseContext;
	}

	static reapplyValidators(params: {
		formGroup: UntypedFormGroup,
		validationErrorModel: ValidationErrorModel,
		rootPath: string
	}): void {

		const { formGroup, rootPath, validationErrorModel } = params;

		const keys = Object.keys(formGroup.value as Object);
		keys.forEach((key) => {
			const formArray = formGroup?.get(key);
			DescriptionPropertyDefinitionFieldSetEditorModel.reapplyValidators({
				formArray: formArray.get('items') as UntypedFormArray,
				rootPath: `${rootPath}fieldSets[${key}].`,
				validationErrorModel: validationErrorModel
			})
		});
	}

	private calculateProperties(item: DescriptionPropertyDefinition, descriptionTemplate: DescriptionTemplate, descriptionReferences: DescriptionReference[]): Map<string, DescriptionPropertyDefinitionFieldSetEditorModel> {
		let result: Map<string, DescriptionPropertyDefinitionFieldSetEditorModel> = new Map<string, DescriptionPropertyDefinitionFieldSetEditorModel>();
		if (descriptionTemplate) (
			descriptionTemplate.definition.pages.forEach(definitionPage => {

				definitionPage.sections.forEach(definitionSection => {

					const sectionResult = this.calculateSectionProperties(definitionSection, item, descriptionReferences);
					if (sectionResult != null) {
						result = new Map([...result, ...sectionResult]);
					}
				})
			})
		)
		return result;
	}

	private calculateSectionProperties(definitionSection: DescriptionTemplateSection, item: DescriptionPropertyDefinition, descriptionReferences: DescriptionReference[]): Map<string, DescriptionPropertyDefinitionFieldSetEditorModel> {
		if (definitionSection == null) return null;
		let result: Map<string, DescriptionPropertyDefinitionFieldSetEditorModel> = new Map<string, DescriptionPropertyDefinitionFieldSetEditorModel>();

		definitionSection?.fieldSets?.forEach(definitionFieldSet => {
			const fieldSetResult = this.calculateFieldSetProperties(definitionFieldSet, item, descriptionReferences);
			if (fieldSetResult != null) {
				result.set(definitionFieldSet.id, fieldSetResult);
			}
		});

		if (definitionSection.sections != null && definitionSection.sections?.length > 0) {
			definitionSection.sections.forEach(nestedDefinitionSection => {
				const nestedSectionResult = this.calculateSectionProperties(nestedDefinitionSection, item, descriptionReferences);
				if (nestedSectionResult != null) {
					result = new Map([...result, ...nestedSectionResult]);
				}
			});
		}

		return result;
	}

	public calculateFieldSetProperties(definitionFieldSet: DescriptionTemplateFieldSet, item: DescriptionPropertyDefinition, descriptionReferences: DescriptionReference[]): DescriptionPropertyDefinitionFieldSetEditorModel {
		if (definitionFieldSet == null) return null;

		// current saved values
		const fieldSetValue: DescriptionPropertyDefinitionFieldSet = item?.fieldSets[definitionFieldSet.id] ?? {};

		// new item case, where we need to add controls for all the containing fields.
		if (fieldSetValue.items == null || fieldSetValue.items?.length == 0) {

			const fields = new Map<string, DescriptionField>();
			definitionFieldSet.fields.forEach(definitionField => {
				fields.set(definitionField.id, {
					textValue: undefined,
					textListValue: undefined,
					dateValue: undefined,
					externalIdentifier: undefined,
					references: undefined
				});
			})
			fieldSetValue.items = [{
				fields: fields,
				ordinal: 0
			} as DescriptionPropertyDefinitionFieldSetItem]
		}

		return new DescriptionPropertyDefinitionFieldSetEditorModel(this.validationErrorModel).fromModel(fieldSetValue, descriptionReferences, definitionFieldSet);
	}

}

export class DescriptionPropertyDefinitionFieldSetEditorModel implements DescriptionPropertyDefinitionFieldSetPersist {
	items?: DescriptionPropertyDefinitionFieldSetItemEditorModel[] = [];
	protected formBuilder: UntypedFormBuilder = new UntypedFormBuilder();

	constructor(
		public validationErrorModel: ValidationErrorModel = new ValidationErrorModel()
	) { }

	public fromModel(item: DescriptionPropertyDefinitionFieldSet, descriptionReferences: DescriptionReference[], definitionFieldSet: DescriptionTemplateFieldSet): DescriptionPropertyDefinitionFieldSetEditorModel {
		if (item) {
			if (item.items) { item.items.map(x => this.items.push(new DescriptionPropertyDefinitionFieldSetItemEditorModel(this.validationErrorModel).fromModel(x, descriptionReferences, definitionFieldSet))); }
		}
		return this;
	}

	buildForm(params?: {
		context?: ValidationContext,
		disabled?: boolean,
		rootPath?: string
	}): UntypedFormGroup {
		let { context = null, disabled = false, rootPath } = params ?? {}
		if (context == null) {
			context = DescriptionPropertyDefinitionFieldSetEditorModel.createValidationContext({
				validationErrorModel: this.validationErrorModel,
				rootPath
			});
		}

		return this.formBuilder.group({
			items: this.formBuilder.array(
				(this.items ?? []).map(
					(item, index) => item.buildForm({
						rootPath: `${rootPath}items[${index}].`
					})
				), context.getValidation('items').validators
			)
		});
	}

	static createValidationContext(params: {
		rootPath?: string,
		validationErrorModel: ValidationErrorModel
	}): ValidationContext {
		const { rootPath = '', validationErrorModel } = params;

		const baseContext: ValidationContext = new ValidationContext();
		const baseValidationArray: Validation[] = new Array<Validation>();
		baseValidationArray.push({ key: 'items', validators: [BackendErrorValidator(validationErrorModel, `${rootPath}items`)] });

		baseContext.validation = baseValidationArray;
		return baseContext;
	}

	static reapplyValidators(params: {
		formArray: UntypedFormArray,
		validationErrorModel: ValidationErrorModel,
		rootPath: string
	}): void {
		const { validationErrorModel, rootPath, formArray } = params;
		formArray?.controls?.forEach(
			(control, index) => DescriptionPropertyDefinitionFieldSetItemEditorModel.reapplyValidators({
				formGroup: control as UntypedFormGroup,
				rootPath: `${rootPath}items[${index}].`,
				validationErrorModel: validationErrorModel
			})
		);
	}

}

export class DescriptionPropertyDefinitionFieldSetItemEditorModel implements DescriptionPropertyDefinitionFieldSetItemPersist {
	fields: Map<string, DescriptionFieldEditorModel> = new Map<string, DescriptionFieldEditorModel>;
	comment?: string;
	ordinal?: number;
	protected formBuilder: UntypedFormBuilder = new UntypedFormBuilder();

	constructor(
		public validationErrorModel: ValidationErrorModel = new ValidationErrorModel()
	) { }

	public fromModel(item: DescriptionPropertyDefinitionFieldSetItem, descriptionReferences: DescriptionReference[], definitionFieldSet: DescriptionTemplateFieldSet): DescriptionPropertyDefinitionFieldSetItemEditorModel {
		if (item) {
			this.comment = item.comment;
			this.ordinal = item.ordinal;
			if (item.fields) {
				//TODO: don't like it. Find a common way to parse it either its Map or json.
				if (item.fields instanceof Map)
					new Map(item.fields)?.forEach((value, key) => this.fields.set(key, new DescriptionFieldEditorModel(this.validationErrorModel).fromModel(value, definitionFieldSet?.fields?.find(x => x.id == key), descriptionReferences)));
				else
					Object.keys(item.fields)?.forEach((key) => this.fields.set(key, new DescriptionFieldEditorModel(this.validationErrorModel).fromModel(item.fields[key], definitionFieldSet?.fields?.find(x => x.id == key), descriptionReferences)));
			}
		}
		return this;
	}

	buildForm(params?: {
		context?: ValidationContext,
		disabled?: boolean,
		rootPath?: string
	}): UntypedFormGroup {
		let { context = null, disabled = false, rootPath } = params ?? {}
		if (context == null) {
			context = DescriptionPropertyDefinitionFieldSetItemEditorModel.createValidationContext({
				validationErrorModel: this.validationErrorModel,
				rootPath
			});
		}

		const formGroup = this.formBuilder.group({});
		formGroup.addControl('comment', new FormControl({ value: this.comment, disabled: disabled }, context.getValidation('comment').validators));
		formGroup.addControl('ordinal', new FormControl({ value: this.ordinal, disabled: disabled }, context.getValidation('ordinal').validators));


		const fieldsFormGroup = this.formBuilder.group({});
		this.fields.forEach((value, key) => fieldsFormGroup.addControl(key.toString(), value.buildForm({
			rootPath: `${rootPath}fields[${key}].`
		})), context.getValidation('fields')
		)
		formGroup.addControl('fields', fieldsFormGroup);

		return formGroup;
	}

	static createValidationContext(params: {
		rootPath?: string,
		validationErrorModel: ValidationErrorModel
	}): ValidationContext {
		const { rootPath = '', validationErrorModel } = params;

		const baseContext: ValidationContext = new ValidationContext();
		const baseValidationArray: Validation[] = new Array<Validation>();
		baseValidationArray.push({ key: 'fields', validators: [BackendErrorValidator(validationErrorModel, `${rootPath}fields`)] });
		baseValidationArray.push({ key: 'comment', validators: [BackendErrorValidator(validationErrorModel, `${rootPath}comment`)] });
		baseValidationArray.push({ key: 'ordinal', validators: [BackendErrorValidator(validationErrorModel, `${rootPath}ordinal`)] });

		baseContext.validation = baseValidationArray;
		return baseContext;
	}

	static reapplyValidators(params: {
		formGroup: UntypedFormGroup,
		validationErrorModel: ValidationErrorModel,
		rootPath: string
	}): void {

		const { formGroup, rootPath, validationErrorModel } = params;
		const context = DescriptionPropertyDefinitionFieldSetItemEditorModel.createValidationContext({
			rootPath,
			validationErrorModel
		});

		const fields = formGroup?.get('fields') as UntypedFormGroup;
		const keys = Object.keys(fields.value as Object);
		keys.forEach((key) => {
			const control = fields?.get(key);
			DescriptionFieldEditorModel.reapplyValidators({
				formGroup: control as UntypedFormGroup,
				rootPath: `${rootPath}fields[${key}].`,
				validationErrorModel: validationErrorModel
			})
		});

		['comment', 'ordinal'].forEach(keyField => {
			const control = formGroup?.get(keyField);
			control?.clearValidators();
			control?.addValidators(context.getValidation(keyField).validators);
		});
	}

}

export class DescriptionFieldEditorModel implements DescriptionFieldPersist {
	textValue: string;
	textListValue: string[];
	dateValue: Date;
	references: ReferencePersist[] = [];
	reference: ReferencePersist;
	externalIdentifier?: DescriptionExternalIdentifierEditorModel = new DescriptionExternalIdentifierEditorModel(this.validationErrorModel);

	protected formBuilder: UntypedFormBuilder = new UntypedFormBuilder();

	constructor(
		public validationErrorModel: ValidationErrorModel = new ValidationErrorModel()
	) { }

	public fromModel(item: DescriptionField, descriptionTemplateField: DescriptionTemplateField, descriptionReferences: DescriptionReference[]): DescriptionFieldEditorModel {
		if (item) {
			this.textValue = item.textValue;
			this.textListValue = item.textListValue;
			this.dateValue = item.dateValue;

			this.reference = descriptionReferences?.filter(x => descriptionTemplateField.data.multipleSelect == false && x.data?.fieldId == descriptionTemplateField?.id && x.isActive == IsActive.Active).map(x => {
					return {
						id: x.reference.id,
						label: x.reference.label,
						reference: x.reference.reference,
						source: x.reference.source,
						typeId: x.reference.type.id,
						description: x.reference.source,
						definition: x.reference.definition,
						abbreviation: x.reference.abbreviation,
						sourceType: x.reference.sourceType
					}
				})[0];

			this.references = descriptionReferences?.filter(x => x.data?.fieldId == descriptionTemplateField?.id && x.isActive == IsActive.Active).map(x => {
					return {
						id: x.reference.id,
						label: x.reference.label,
						reference: x.reference.reference,
						source: x.reference.source,
						typeId: x.reference.type.id,
						description: x.reference.source,
						definition: x.reference.definition,
						abbreviation: x.reference.abbreviation,
						sourceType: x.reference.sourceType
					}
				});
			
			this.externalIdentifier = new DescriptionExternalIdentifierEditorModel(this.validationErrorModel).fromModel(item.externalIdentifier);
		}
		return this;
	}

	buildForm(params?: {
		context?: ValidationContext,
		disabled?: boolean,
		rootPath?: string
	}): UntypedFormGroup {
		let { context = null, disabled = false, rootPath } = params ?? {}
		if (context == null) {
			context = DescriptionFieldEditorModel.createValidationContext({
				validationErrorModel: this.validationErrorModel,
				rootPath
			});
		}

		return this.formBuilder.group({
			textValue: [{ value: this.textValue, disabled: disabled }, context.getValidation('textValue').validators],
			textListValue: [{ value: this.textListValue, disabled: disabled }, context.getValidation('textListValue').validators],
			dateValue: [{ value: this.dateValue, disabled: disabled }, context.getValidation('dateValue').validators],
			references: [{ value: this.references, disabled: disabled }, context.getValidation('references').validators],
			reference: [{ value: this.reference, disabled: disabled }, context.getValidation('reference').validators],
			externalIdentifier: this.externalIdentifier.buildForm({
				rootPath: `${rootPath}externalIdentifier.`
			}),
		});
	}

	static createValidationContext(params: {
		rootPath?: string,
		validationErrorModel: ValidationErrorModel
	}): ValidationContext {
		const { rootPath = '', validationErrorModel } = params;

		const baseContext: ValidationContext = new ValidationContext();
		const baseValidationArray: Validation[] = new Array<Validation>();
		baseValidationArray.push({ key: 'textValue', validators: [BackendErrorValidator(validationErrorModel, `${rootPath}textValue`)] });
		baseValidationArray.push({ key: 'textListValue', validators: [BackendErrorValidator(validationErrorModel, `${rootPath}textListValue`)] });
		baseValidationArray.push({ key: 'dateValue', validators: [BackendErrorValidator(validationErrorModel, `${rootPath}dateValue`)] });
		baseValidationArray.push({ key: 'references', validators: [BackendErrorValidator(validationErrorModel, `${rootPath}references`)] });
		baseValidationArray.push({ key: 'reference', validators: [BackendErrorValidator(validationErrorModel, `${rootPath}references`)] });
		baseValidationArray.push({ key: 'externalIdentifier', validators: [BackendErrorValidator(validationErrorModel, `${rootPath}externalIdentifier`)] });
		baseContext.validation = baseValidationArray;
		return baseContext;
	}

	static reapplyValidators(params: {
		formGroup: UntypedFormGroup,
		validationErrorModel: ValidationErrorModel,
		rootPath: string
	}): void {

		const { formGroup, rootPath, validationErrorModel } = params;
		const context = DescriptionFieldEditorModel.createValidationContext({
			rootPath,
			validationErrorModel
		});

		['textValue', 'textListValue', 'dateValue'].forEach(keyField => {
			const control = formGroup?.get(keyField);
			control?.clearValidators();
			control?.addValidators(context.getValidation(keyField).validators);
		})

		DescriptionExternalIdentifierEditorModel.reapplyValidators({
			formGroup: formGroup?.get('externalIdentifier') as UntypedFormGroup,
			rootPath: `${rootPath}externalIdentifier.`,
			validationErrorModel: validationErrorModel
		});
	}
}

export class DescriptionExternalIdentifierEditorModel implements DescriptionExternalIdentifierPersist {
	identifier: string;
	type: string;

	protected formBuilder: UntypedFormBuilder = new UntypedFormBuilder();

	constructor(
		public validationErrorModel: ValidationErrorModel = new ValidationErrorModel()
	) { }

	public fromModel(item: DescriptionExternalIdentifier): DescriptionExternalIdentifierEditorModel {
		if (item) {
			this.identifier = item.identifier;
			this.type = item.type;
		}
		return this;
	}

	buildForm(params?: {
		context?: ValidationContext,
		disabled?: boolean,
		rootPath?: string
	}): UntypedFormGroup {
		let { context = null, disabled = false, rootPath } = params ?? {}
		if (context == null) {
			context = DescriptionExternalIdentifierEditorModel.createValidationContext({
				validationErrorModel: this.validationErrorModel,
				rootPath
			});
		}

		return this.formBuilder.group({
			identifier: [{ value: this.identifier, disabled: disabled }, context.getValidation('identifier').validators],
			type: [{ value: this.type, disabled: disabled }, context.getValidation('type').validators],
		});
	}

	static createValidationContext(params: {
		rootPath?: string,
		validationErrorModel: ValidationErrorModel
	}): ValidationContext {
		const { rootPath = '', validationErrorModel } = params;

		const baseContext: ValidationContext = new ValidationContext();
		const baseValidationArray: Validation[] = new Array<Validation>();
		baseValidationArray.push({ key: 'identifier', validators: [BackendErrorValidator(validationErrorModel, `${rootPath}identifier`)] });
		baseValidationArray.push({ key: 'type', validators: [BackendErrorValidator(validationErrorModel, `${rootPath}type`)] });
		baseContext.validation = baseValidationArray;
		return baseContext;
	}

	static reapplyValidators(params: {
		formGroup: UntypedFormGroup,
		validationErrorModel: ValidationErrorModel,
		rootPath: string
	}): void {

		const { formGroup, rootPath, validationErrorModel } = params;
		const context = DescriptionExternalIdentifierEditorModel.createValidationContext({
			rootPath,
			validationErrorModel
		});

		['identifier', 'type'].forEach(keyField => {
			const control = formGroup?.get(keyField);
			control?.clearValidators();
			control?.addValidators(context.getValidation(keyField).validators);
		});
	}
}

export class DescriptionReferenceEditorModel implements DescriptionReferencePersist {
	id: Guid;
	reference?: ReferencePersist;
	hash: string;

	protected formBuilder: UntypedFormBuilder = new UntypedFormBuilder();

	constructor(
		public validationErrorModel: ValidationErrorModel = new ValidationErrorModel()
	) { }

	fromModel(item: DescriptionReference): DescriptionReferenceEditorModel {
		this.id = item.id;
		//TODO: refactor reference type
		//this.reference = item.reference;
		this.hash = item.hash;

		return this;
	}

	buildForm(params?: {
		context?: ValidationContext,
		disabled?: boolean,
		rootPath?: string
	}): UntypedFormGroup {
		let { context = null, disabled = false, rootPath } = params ?? {}
		if (context == null) {
			context = DescriptionReferenceEditorModel.createValidationContext({
				validationErrorModel: this.validationErrorModel,
				rootPath
			});
		}

		return this.formBuilder.group({
			id: [{ value: this.id, disabled: disabled }, context.getValidation('id').validators],
			reference: [{ value: this.reference, disabled: disabled }, context.getValidation('reference').validators],
			hash: [{ value: this.hash, disabled: disabled }, context.getValidation('hash').validators]
		});
	}

	static createValidationContext(params: {
		rootPath?: string,
		validationErrorModel: ValidationErrorModel
	}): ValidationContext {
		const { rootPath = '', validationErrorModel } = params;

		const baseContext: ValidationContext = new ValidationContext();
		const baseValidationArray: Validation[] = new Array<Validation>();
		baseValidationArray.push({ key: 'id', validators: [BackendErrorValidator(validationErrorModel, `${rootPath}id`)] });
		baseValidationArray.push({ key: 'reference', validators: [BackendErrorValidator(validationErrorModel, `${rootPath}reference`)] });
		baseValidationArray.push({ key: 'hash', validators: [] });

		baseContext.validation = baseValidationArray;
		return baseContext;
	}

	static reapplyValidators(params: {
		formGroup: UntypedFormGroup,
		validationErrorModel: ValidationErrorModel,
		rootPath: string
	}): void {

		const { formGroup, rootPath, validationErrorModel } = params;
		const context = DescriptionExternalIdentifierEditorModel.createValidationContext({
			rootPath,
			validationErrorModel
		});

		['id', 'reference'].forEach(keyField => {
			const control = formGroup?.get(keyField);
			control?.clearValidators();
			control?.addValidators(context.getValidation(keyField).validators);
		});
	}
}