<?php
/**
 * Handles CSS output for typography fields.
 *
 * @package     Kirki
 * @subpackage  Controls
 * @copyright   Copyright (c) 2016, Aristeides Stathopoulos
 * @license     http://opensource.org/licenses/https://opensource.org/licenses/MIT
 * @since       2.2.0
 */

if ( ! class_exists( 'Kirki_Output_Field_Typography' ) ) {

	/**
	 * Output overrides.
	 */
	class Kirki_Output_Field_Typography extends Kirki_Output {

		/**
		 * Processes a single item from the `output` array.
		 *
		 * @access protected
		 * @param array $output The `output` item.
		 * @param array $value  The field's value.
		 */
		protected function process_output( $output, $value ) {
			$output['media_query'] = ( isset( $output['media_query'] ) ) ? $output['media_query'] : 'global';
			$output['element']     = ( isset( $output['element'] ) ) ? $output['element'] : 'body';

			// Take care of font-families.
			if ( isset( $value['font-family'] ) && ! empty( $value['font-family'] ) ) {
				$output['media_query'] = ( isset( $output['media_query'] ) ) ? $output['media_query'] : 'global';
				$this->styles[ $output['media_query'] ][ $output['element'] ]['font-family'] = $this->process_property_value( 'font-family', $value['font-family'] );
			}

			// Add support for the older font-weight parameter.
			// This has been deprecated so the code below is just to add some backwards-compatibility.
			// Once a user visits their customizer and make changes to their typography,
			// new values are saved and this one is no longer used.
			if ( isset( $value['font-weight'] ) && ! empty( $value['font-weight'] ) ) {
				$this->styles[ $output['media_query'] ][ $output['element'] ]['font-weight'] = $value['font-weight'];
			}

			// Take care of variants.
			if ( isset( $value['variant'] ) && ! empty( $value['variant'] ) ) {

				// Get the font_weight.
				$font_weight = str_replace( 'italic', '', $value['variant'] );
				$font_weight = ( in_array( $font_weight, array( '', 'regular' ) ) ) ? '400' : $font_weight;

				// Is this italic?
				$is_italic = ( false !== strpos( $value['variant'], 'italic' ) );
				$this->styles[ $output['media_query'] ][ $output['element'] ]['font-weight'] = $font_weight;
				$font_style = $is_italic ? 'italic' : 'normal' ;
				$this->styles[ $output['media_query'] ][ $output['element'] ]['font-style'] = $font_style;
			}

			// Take care of font-size.
			if ( isset( $value['font-size'] ) && ! empty( $value['font-size'] ) ) {
				$this->styles[ $output['media_query'] ][ $output['element'] ]['font-size'] = $value['font-size'];
			}

			// Take care of line-height.
			if ( isset( $value['line-height'] ) && ! empty( $value['line-height'] ) ) {
				$this->styles[ $output['media_query'] ][ $output['element'] ]['line-height'] = $value['line-height'];
			}

			// Take care of letter-spacing.
			if ( isset( $value['letter-spacing'] ) && ( ! empty( $value['letter-spacing'] ) || '0' == $value['letter-spacing'] ) ) {
				$this->styles[ $output['media_query'] ][ $output['element'] ]['letter-spacing'] = $value['letter-spacing'];
			}

			// Take care of text-align.
			if ( isset( $value['text-align'] ) && ! empty( $value['text-align'] ) ) {
				$this->styles[ $output['media_query'] ][ $output['element'] ]['text-align'] = $value['text-align'];
			}

			// Take care of text-transform.
			if ( isset( $value['text-transform'] ) && ! empty( $value['text-transform'] ) ) {
				$this->styles[ $output['media_query'] ][ $output['element'] ]['text-transform'] = $value['text-transform'];
			}

			// Take care of color.
			if ( isset( $value['color'] ) && ! empty( $value['color'] ) ) {
				$this->styles[ $output['media_query'] ][ $output['element'] ]['color'] = $value['color'];
			}
		}
	}
}