<?php
/**
 * @copyright	Copyright (c) 2016 AmyTheme (http://www.amytheme.com). All rights reserved.
 * @license		http://www.gnu.org/licenses/gpl-2.0.html GNU/GPL
 */

defined( 'ABSPATH' ) or die;

/**
 *
 * Style Builder Class
 * A helper class for build custom style.
 *
 * @since 1.0.0
 * @version 1.0.0
 */
if ( ! class_exists( 'AmyFramework_Style_Builder' ) ) {
	class AmyFramework_Style_Builder {
		protected $styles	= array();

		public static function getInstance() {
			static $instance;

			if ( empty( $instance ) ) {
				$instance	= new AmyFramework_Style_Builder();
			}

			return $instance;
		}

		public function addStyle( $selector, $styles, $media = 'all' ) {
			$selector	= trim( $selector );
			$styles		= trim( $styles );

			if ( ! empty( $selector ) && ! empty( $styles ) ) {
				if ( substr( $styles, -1 ) != ';' ) {
					$styles	.= ';';
				}

				if ( isset( $this->styles[ $media ] ) ) {
					if ( isset( $this->styles[ $media ][ $selector ] ) ) {
						$this->styles[ $media ][ $selector ]	.= $styles;
					} else {
						$this->styles[ $media ][ $selector ]	= $styles;
					}
				} else {
					$this->styles[ $media ]	= array( $selector => $styles );
				}
			}
		}

		public function render() {
			$css	= '';

			foreach ( $this->styles as $media => $rule ) {
				if ( $media != 'all' ) {
					$css .= $media . '{';
				}

				foreach ( $rule as $selector => $styles ) {
					$css	.= $selector . '{' . $styles . '}';
				}

				if ( $media != 'all' ) {
					$css .= '}';
				}
			}

			return $css;
		}
	}
}