D-Net

/**

 * Created by stefania on 4/26/17.

 */

import { Component, ViewChild, OnInit } from '@angular/core';

import { Topic, CheckTopic } from "../../domain/topic";

import { FAQService } from "../../services/faq.service";

import { FormGroup } from "@angular/forms";

import { ModalFormComponent } from "../modal-form.component";

import { TopicsFormComponent } from "./topics-form.component";

import { DeleteConfirmationDialogComponent } from "../delete-confirmation-dialog.component";

@Component({

    selector: 'topics',

    templateUrl: './topics.component.html',

})

export class TopicsComponent implements OnInit {

    // @ViewChild(ModalFormComponent)

    @ViewChild('saveModal')

    public modal:ModalFormComponent;

    @ViewChild('updateModal')

    public updateModal:ModalFormComponent;

    @ViewChild('deleteConfirmationModal')

    public deleteConfirmationModal : DeleteConfirmationDialogComponent;

    @ViewChild(TopicsFormComponent)

    public formComponent : TopicsFormComponent;

    public topicsCheckboxes : CheckTopic[] = [];

    public topics : Topic[] = [];

    public errorMessage: string = null;

    public successMessage: string = null;

    public formGroup : FormGroup;

    private searchText : RegExp = new RegExp('');

    ngOnInit() {

        this.getTopics();

        this.formGroup = this.formComponent.form;

    }

    constructor(private _faqService: FAQService) {}

    getTopics() {

        let self = this;

        this._faqService.getTopics().subscribe(

            topics => {

                self.topics = topics;

                topics.forEach(_ => {

                    self.topicsCheckboxes.push(<CheckTopic>{topic : _, checked : false});

                });

            },

            error => this.handleError('System error retrieving topics topics', error));

    }

    public showModal():void {

        this.modal.showModal();

    }

    public toggleCheckBoxes(event) {

        this.topicsCheckboxes.forEach(_ => _.checked = event.target.checked);

    }

    public applyCheck(flag : boolean) {

        this.topicsCheckboxes.forEach(_ => _.checked = flag);

    }

    public getSelectedTopics() : string[] {

        return this.topicsCheckboxes.filter(topic => topic.checked == true).map(checkedTopic => checkedTopic.topic).map(res => res._id);

    }

    private deleteTopicsFromArray(ids : string[]) : void {

        this.successMessage = `Successfully deleted Topic(s)`;

        for(let id of ids) {

            let i = this.topicsCheckboxes.findIndex(_ => _.topic._id == id);

            this.topicsCheckboxes.splice(i, 1);

        }

    }

    public confirmDeleteTopic(id : string) {

        this.deleteConfirmationModal.ids = [id];

        this.deleteConfirmationModal.showModal();

    }

    public confirmDeleteSelectedTopics() {

        this.deleteConfirmationModal.ids = this.getSelectedTopics();

        this.deleteConfirmationModal.showModal();

    }

    public confirmedDeleteTopic(ids : string[]) {

        this._faqService.deleteTopics(ids).subscribe(

            _ => this.deleteTopicsFromArray(ids),

            error => this.handleError('System error deleting the selected topics', error)

        );

    }

    public sort(type : string) {

        if(type=='weight') {

            this.topicsCheckboxes.sort(function(a, b) {

                return a.topic.weight - b.topic.weight;

            });

        } else if (type == 'hits') {

        }

    }

    public editTopic(i : number) {

        let topic : Topic = this.topicsCheckboxes[i].topic;

        this.formGroup.patchValue(topic);

        this.updateModal.showModal();

    }

    public toggleTopic(order : string, ids : string[]) {

        this._faqService.orderTopic(ids,order).subscribe(

            ret => {

                for(let id of ret) {

                    let i = this.topicsCheckboxes.findIndex(_ => _.topic._id == id);

                    this.topicsCheckboxes[i].topic.questionOrder=order;

                }

            },

            error => this.handleError('System error ordering topics', <any>error)

        );

        this.applyCheck(false);

    }

    public topicSavedSuccessfully(topic: Topic) {

        this.topicsCheckboxes.push(<CheckTopic>{topic : topic, checked : false});

        this.successMessage = `Topic [${topic.name}] saved successfully`;

        this.applyCheck(false);

    }

    public topicUpdatedSuccessfully(topic : Topic) {

        this.topicsCheckboxes.find(checkItem => checkItem.topic._id==topic._id).topic = topic;

        this.successMessage = `Topic [${topic.name}] updated successfully`;

        this.applyCheck(false);

    }

    public filterBySearch(text : string) {

        this.searchText = new RegExp(text,'i');

        this.applyFilter();

    }

    public applyFilter() {

        this.topicsCheckboxes = [];

        this.topics.filter(item => this.filterQuestion(item)).forEach(

            _ => this.topicsCheckboxes.push(<CheckTopic>{topic: _, checked: false})

        );

    }

    public filterQuestion(topic : Topic) : boolean {

        let textFlag = this.searchText.toString() == '' || (topic.name + ' ' +topic.description).match(this.searchText) != null;

        return textFlag;

    }

    handleError(message: string, error) {

        if(error == null) {

            this.formComponent.reset();

        } else {

            this.errorMessage = message + ' (Server responded: ' + error + ')';

        }

    }

}