import {Component, ElementRef, Input} from '@angular/core';
import {isEmpty} from 'lodash';
import {JsfCore} from '../../superclass/jsf-core';

@Component({
    selector: 'f-validate-regex',
    templateUrl: './f-validate-regex.component.html',
    styleUrls: ['./f-validate-regex.component.css'],
})
export class FValidateRegexComponent extends JsfCore {
    @Input()
    pattern: string;

    constructor(elementRef: ElementRef) {
        super(elementRef);
    }

    /**
     * checks string for regular expression
     * @param {string} content
     * @returns {boolean} true when regex ok
     */
    validate(content: string): boolean {
        if (!isEmpty(content)) {
            return content.match(this.pattern) !== null;
        } else {
            return true;
        }
    }
}