/*--------------------------------------------------------------------------------------------------------------
 *  Copyright (c) insite-gmbh. All rights reserved.
 *  Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 *--------------------------------------------------------------------------------------------------------------*/
import { Component, ElementRef, Directive, Input, OnInit, Output, ViewChild } from '@angular/core';
import { InaxPlcService, DataChangeEvent, IPlcEventProxy, PlcValidator  } from '../../../plc';
import { InaxSignalR, Guid } from '../../../common';
import { PlcItem } from '../../../../app/components/plcviewer/plcviewer.component';
import { InaxLoggerService } from '../../../logger/src/logger';
import { PlcInput, PlcInputType, PlcAddressType } from '../plcInput';



@Component(Object.assign({
    selector: 'plc-checkbox',
    templateUrl: './@inax/plcUi/src/plcCheckbox/plc-checkbox.component.html',
    styleUrls: ['./@inax/plcUi/src/plcCheckbox/plc-checkbox.component.css']
}, PlcInput.metaData))
export class PlcCheckboxComponent extends PlcInput {

    public displayMessage: string = '';

    constructor(inaxPlc: InaxPlcService) {
        super(inaxPlc);
    }

    /* SPECIFIC INPUTS */
    @Input() trueValue: string = 'true';
    @Input() falseValue: string = 'false';
    @Input() trueValueMessage: string = 'Start';
    @Input() falseValueMessage: string = 'Stop';

    @ViewChild('plccheckbox') checkbox;

    public get Value(): string {
        return (this._value === this.trueValue) ? 'checked' : '';
    }

    public set Value(v: string) {
        
    }

    ngOnInit(): void {
        this.initializeDefaultProperties();
        this.initialize();

        this.subscribe();
    }

    ngOnDestroy(): void {
        this.unsubscribe();
    }

    public initialize(): void {
        
    }

    /**
     * updates the current value
     * - if the value equals trueValue, trueValueMessage is displayed in the label
     * - in all other cases, falseValueMessage is displayed
     * @param value     the value to set
     */
    public updateValue(value: string): void {
        this._value = value;
        this.displayMessage = (value === this.trueValue) ? this.trueValueMessage : this.falseValueMessage;
    }

    /**
     * writes the other specified value (different values are treated like falseValue)
     * if the write operation does return false, the checkbox is set to the current
     * Value (before the switch) so it does always display the actual value
     */
    public switchValue(): void {
        let val = (this._value === this.trueValue) ? this.falseValue : this.trueValue;
        if (this.write(val) !== true) {
            this.checkbox.nativeElement.checked = this.Value;   
        }
    }

}