D-Net

/**

 * Created by stefania on 4/26/17.

 */

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

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

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

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

import { QuestionsFormComponent } from "./questions-form.component";

import { CheckQuestion, Question, QuestionFilterOptions } from "../../domain/question";

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

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

@Component({

    selector: 'questions',

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

})

export class QuestionsComponent implements OnInit {

    // @ViewChild(ModalFormComponent)

    @ViewChild('saveModal')

    public modal:ModalFormComponent;

    @ViewChild('updateModal')

    public updateModal:ModalFormComponent;

    @ViewChild(QuestionsFormComponent)

    public formComponent : QuestionsFormComponent;

    @ViewChild('deleteConfirmationModal')

    public deleteConfirmationModal : DeleteConfirmationDialogComponent;

    public questionsCheckboxes : CheckQuestion[] = [];

    public questions : Question[] = [];

    public errorMessage: string = null;

    public successMessage: string = null;

    public formGroup : FormGroup;

    public topics: Topic[];

    public checkboxAll : boolean = false;

    public filters : QuestionFilterOptions = {id : '', active : null, text : new RegExp('')};

    public counter = {all : 0, active : 0, inactive : 0};

    ngOnInit() {

        this.getTopics();

        this.getQuestions();

        this.formGroup = this.formComponent.form;

    }

    constructor(private _faqService: FAQService) {}

    getTopics() {

        this._faqService.getTopics().subscribe(

            topics => this.topics = topics,

            error =>  this.errorMessage = <any>error);

    }

    public countQuestions() {

        this.counter = {all : 0, active : 0, inactive : 0};

        let filter = Object.assign({},this.filters);

        filter.active = null;

        this.questions.forEach(_ => {

            if(this.filterQuestion(_,filter)){

                if (_.isActive==true) this.counter.active++;

                else this.counter.inactive++

            }

        });

        this.counter.all = this.counter.active + this.counter.inactive;

    }

    getQuestions() {

        let self = this;

        this._faqService.getQuestions().subscribe(

            questions => {

                self.questions = questions;

                self.counter.all = questions.length;

                questions.forEach(_ => {

                    self.questionsCheckboxes.push(<CheckQuestion>{question : _, checked : false});

                });

                self.countQuestions();

            },

            error =>  this.errorMessage = <any>error);

    }

    public showModal():void {

        this.modal.showModal();

    }

    public toggleCheckBoxes(event) {

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

        this.checkboxAll = event.target.checked;

    }

    public applyCheck(flag : boolean) {

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

        this.checkboxAll = false;

    }

    public getSelectedQuestions() : string[] {

        return this.questionsCheckboxes.filter(question => question.checked == true)

            .map(checkedQuestion => checkedQuestion.question).map(res => res._id);

    }

    public confirmDeleteQuestion(id : string) {

        this.deleteConfirmationModal.ids = [id];

        this.deleteConfirmationModal.showModal();

    }

    public confirmDeleteSelectedQuestions() {

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

        this.deleteConfirmationModal.showModal();

    }

    public confirmedDeleteQuestions(ids : string[]) {

        this._faqService.deleteQuestions(ids).subscribe(

            _ => this.deleteQuestionsFromArray(ids),

            error => this.handleError(error)

        );

    }

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

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

        for(let id of ids) {

            let iqc = this.questionsCheckboxes.findIndex(_ => _.question._id == id);

            let iq = this.questions.findIndex(_ => _._id == id);

            this.questionsCheckboxes.splice(iqc, 1);

            this.questions.splice(iqc, 1);

        }

    }

    public editQuestion(i : number) {

        let question : Question = Object.assign({}, this.questionsCheckboxes[i].question);

        // question.topics = <Topic[]>Object.create(this.questionsCheckboxes[i].question.topics);

        let topics : string[] = [];

        for(let topic of <Topic[]>question.topics) {

            topics.push(topic._id)

        }

        question.topics = topics;

        console.log(question);

        this.formGroup.patchValue(question);

        this.updateModal.showModal();

    }

    public toggleQuestion(status : boolean, ids : string[]) {

        this._faqService.toggleQuestion(ids,status).subscribe(

            ret => {

                for(let id of ret) {

                    let i = this.questionsCheckboxes.findIndex(_ => _.question._id == id);

                    this.questionsCheckboxes[i].question.isActive=status;

                }

                this.countQuestions();

                this.applyCheck(false);

            },

            error => this.handleError(<any>error)

        );

    }

    public saveQuestion(data : any):void {

        console.log(data);

        this._faqService.saveQuestion(data).subscribe(

            question => this.questionSavedSuccessfully(question),

            error => this.handleError(<any>error)

        );

    }

    public questionSavedSuccessfully(question: Question) {

        this.questionsCheckboxes.push(<CheckQuestion>{question : question, checked : false});

        this.questions.push(question);

        this.successMessage = `Question [${question.question}] saved successfully`;

        this.applyCheck(false);

        this.countQuestions();

    }

    public questionUpdatedSuccessfully(question : Question) {

        this.questionsCheckboxes.find(checkItem => checkItem.question._id==question._id).question = question;

        let index = this.questions.findIndex(checkItem => checkItem._id==question._id);

        this.successMessage = `Question [${question.question}] updated successfully`;

        this.questions[index] = question;

        this.applyCheck(false);

        this.countQuestions();

    }

    public filterQuestion(question : Question, filters : QuestionFilterOptions) : boolean {

        let idFlag = filters.id == '' || (<Topic[]>question.topics).map(_ => _._id).includes(filters.id);

        let activeFlag = filters.active == null || question.isActive == filters.active;

        let textFlag = filters.text.toString() == '' || (question.question + ' ' +question.answer).match(filters.text) != null;

        return idFlag && activeFlag && textFlag;

    }

    public applyFilter() {

        this.questionsCheckboxes = [];

        this.questions.filter(item => this.filterQuestion(item,this.filters)).forEach(

            _ => this.questionsCheckboxes.push(<CheckQuestion>{question: _, checked: false})

        );

        this.countQuestions();

    }

    public filterByTopic(event: any) {

        this.filters.id = event.target.value;

        this.applyFilter();

    }

    public displayAllQuestions() {

        this.filters.active = null;

        this.applyFilter();

    }

    public displayActiveQuestions() {

        this.filters.active = true;

        this.applyFilter();

    }

    public filterBySearch(text : string) {

        this.filters.text = new RegExp(text, "i");

        this.applyFilter();

    }

    public displayInactiveQuestions() {

        this.filters.active = false;

        this.applyFilter();

    }

    public getNames(question : Question) : string[]{

        return (<Topic[]>question.topics).map(_ => _.name);

    }

    handleError(error) {

        if(error == null) {

            this.formComponent.reset();

        }else {

            this.errorMessage = 'System error saving topic (Server responded: ' + error + ')';

        }

    }

}