import ngModule from '../../module';
import Component from '../../lib/component';
import './style.scss';

export default class Controller extends Component {
    constructor($element, $scope, $attrs) {
        super($element, $scope);
        this.hasInfo = Boolean($attrs.info);
        this.info = $attrs.info || null;
    }

    set checkValue(value) {
        this.checkIntermediate();
        if (this.isIntermediate)
            value = false;

        this._field = value;

        if (typeof this._checkValue === 'boolean')
            this.emit('change', {value: this.field});

        this._checkValue = value;
    }

    get checkValue() {
        return this._checkValue;
    }

    set field(value) {
        this.checkValue = value;
    }

    get field() {
        if (!this._field && this.isIntermediate)
            return null;

        return this._field;
    }

    set tripleState(value) {
        this._tripleState = value;
        this.checkIntermediate();
    }

    get tripleState() {
        return this._tripleState;
    }

    checkIntermediate() {
        if ((this.intermediate || (!this._field && this.tripleState)) && !this.isIntermediate) {
            this.isIntermediate = true;
            return;
        }

        if (!this.intermediate)
            this.isIntermediate = false;
    }
}
Controller.$inject = ['$element', '$scope', '$attrs'];

ngModule.component('vnCheck', {
    template: require('./check.html'),
    controller: Controller,
    require: {
        model: '?ngModel'
    },
    bindings: {
        field: '=?',
        label: '@?',
        disabled: '<?',
        checked: '<?',
        tripleState: '<?',
        intermediate: '<?'
    }
});