import { Component, OnInit, Input } from '@angular/core';
import { FormGroup } from '@angular/forms';
import { SingleAutoCompleteConfiguration } from '../../../../library/auto-complete/single/single-auto-complete-configuration';
import { RequestItem } from '../../../../core/query/request-item';
import { GrantCriteria } from '../../../../core/query/grant/grant-criteria';
import { GrantService } from '../../../../core/services/grant/grant.service';
import { LanguageResolverService } from '../../../../services/language-resolver/language-resolver.service';
import { GrantTabModel } from './grant-tab-model';
import { ProjectService } from '../../../../core/services/project/project.service';
import { FunderService } from '../../../../core/services/funder/funder.service';
import { FunderCriteria } from '../../../../core/query/funder/funder-criteria';
import { ProjectCriteria } from '../../../../core/query/project/project-criteria';

@Component({
	selector: 'app-grant-tab',
	templateUrl: './grant-tab.component.html',
	styleUrls: ['./grant-tab.component.scss']
})
export class GrantTabComponent implements OnInit {

	@Input() grantformGroup: FormGroup;
	@Input() projectFormGroup: FormGroup;
	@Input() funderFormGroup: FormGroup;
	@Input() isFinalized: boolean;
	isCreateNew = false;
	isCreateNewProject = false;
	isCreateNewFunder = false;
	grant: GrantTabModel;

	grantAutoCompleteConfiguration: SingleAutoCompleteConfiguration;
	projectAutoCompleteConfiguration: SingleAutoCompleteConfiguration;
	funderAutoCompleteConfiguration: SingleAutoCompleteConfiguration;

	constructor(
		private grantService: GrantService,
		private projectService: ProjectService,
		private funderService: FunderService,
		public languageResolverService: LanguageResolverService
	) { }

	ngOnInit() {

		const grantRequestItem: RequestItem<GrantCriteria> = new RequestItem();
		grantRequestItem.criteria = new GrantCriteria();

		this.grantAutoCompleteConfiguration = {
			filterFn: this.searchGrant.bind(this),
			initialItems: (extraData) => this.searchGrant(''),
			displayFn: (item) => item['label'],
			titleFn: (item) => item['label'],
			subtitleFn: (item) => item ? item['source'] : null
		};

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

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

		this.isCreateNew = (this.grantformGroup.get('label').value != null && this.grantformGroup.get('label').value.length > 0);
		this.isCreateNewProject = (this.projectFormGroup.get('label').value != null && this.projectFormGroup.get('label').value.length > 0);
		this.isCreateNewFunder = (this.funderFormGroup.get('label').value != null && this.funderFormGroup.get('label').value.length > 0);
		this.setValidators();
		this.setProjectValidators();
		this.setFunderValidators();
	}

	searchGrant(query: any) {
		const grantRequestItem: RequestItem<GrantCriteria> = new RequestItem();
		grantRequestItem.criteria = new GrantCriteria();
		grantRequestItem.criteria.like = query;
		if (this.funderFormGroup.get('existFunder').value) {
			grantRequestItem.criteria.funderReference = this.funderFormGroup.controls['existFunder'].value.reference;
		}
		return this.grantService.getWithExternal(grantRequestItem);
	}

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

	searchFunder(query: string) {
		const funderRequestItem: RequestItem<FunderCriteria> = new RequestItem();
		funderRequestItem.criteria = new FunderCriteria();
		funderRequestItem.criteria.like = query;
		return this.funderService.getWithExternal(funderRequestItem)
	}

	create() {
		this.isCreateNew = !this.isCreateNew;
		this.setValidators();
	}

	createProject() {
		this.isCreateNewProject = !this.isCreateNewProject;
		this.setProjectValidators();
	}

	createFunder() {
		this.isCreateNewFunder = !this.isCreateNewFunder;
		this.setFunderValidators();
	}

	setValidators() {
		if (this.isCreateNew) {
			this.grantformGroup.get('existGrant').disable();
			this.grantformGroup.get('label').enable();
			this.grantformGroup.get('description').enable();
		} else if (this.isFinalized) {
			this.grantformGroup.get('existGrant').disable();
			this.grantformGroup.get('label').disable();
			this.grantformGroup.get('description').disable();
		}
		else {
			this.grantformGroup.get('existGrant').enable();
			this.grantformGroup.get('label').disable();
			this.grantformGroup.get('label').reset();
			this.grantformGroup.get('description').disable();
			this.grantformGroup.get('description').reset();
		}
	}

	setProjectValidators() {
		if (this.isCreateNewProject) {
			this.projectFormGroup.get('existProject').disable();
			this.projectFormGroup.get('label').enable();
			this.projectFormGroup.get('description').enable();
		} else if (this.isFinalized) {
			this.projectFormGroup.get('existProject').disable();
			this.projectFormGroup.get('label').disable();
			this.projectFormGroup.get('description').disable();
		}
		else {
			this.projectFormGroup.get('existProject').enable();
			this.projectFormGroup.get('label').disable();
			this.projectFormGroup.get('label').reset();
			this.projectFormGroup.get('description').disable();
			this.projectFormGroup.get('description').reset();
		}
	}

	setFunderValidators() {
		if (this.isCreateNewFunder) {
			this.funderFormGroup.get('existFunder').disable();
			this.funderFormGroup.get('label').enable();
		} else if (this.isFinalized) {
			this.funderFormGroup.get('existFunder').disable();
			this.funderFormGroup.get('label').disable();
		}
		else {
			this.funderFormGroup.enable();
			this.funderFormGroup.get('label').disable();
			this.funderFormGroup.get('label').reset();
		}
	}

}