<?php
/**
 * Helpers for generating CSS output.
 *
 * @copyright 2017-present Creative Themes
 * @license   http://www.gnu.org/copyleft/gpl.html GNU General Public License
 * @package   Blocksy
 */

/**
 * Generate colors based on input.
 *
 * @param array $color_descriptor Colors array.
 */
function ct_get_colors( $color_descriptor ) {
	$result = [];

	if ( is_array( $color_descriptor ) ) {
		foreach ( $color_descriptor as $id => $data ) {
			$result[ $id ] = ct_get_color( $data );
		}

		return $result;
	}

	return false;
}

/**
 * Extract color from a descriptor.
 * id:
 *   - fw-custom
 *   - fw-no-color
 *   - color_skin_*
 *   - fw-inherit:location
 *   - fw-inherit:location:hover
 *   - fw-inherit:location:default
 *
 * @param array $color_descriptor Single color descriptor.
 */
function ct_get_color( $color_descriptor ) {
	if ( ! isset( $color_descriptor['color'] ) ) {
		return null;
	}

	return $color_descriptor['color'];
}

function ct_expand_responsive_value( $value ) {
	if ( is_array( $value ) && isset( $value['desktop'] ) ) {
		return $value;
	}

	return [
		'desktop' => $value,
		'tablet' => $value,
		'mobile' => $value,
	];
}

function ct_output_responsive_variable( $css, $selector, $variableName, $value ) {
	$value = ct_expand_responsive_value( $value );

	$css->put( $selector, '--' . $variableName . '-sm: ' . $value['mobile'] . 'px' );
	$css->put( $selector, '--' . $variableName . '-md: ' . $value['tablet'] . 'px' );
	$css->put( $selector, '--' . $variableName . '-lg: ' . $value['desktop'] . 'px' );
}

function ct_output_responsive(
	$css,
	$tablet_css,
	$mobile_css,
	$selector,
	$variableName,
	$value,
	$unit = 'px'
) {
	$value = ct_expand_responsive_value( $value );

	$mobile_css->put( $selector, '--' . $variableName . ': ' . $value['mobile'] . $unit );
	$tablet_css->put( $selector, '--' . $variableName . ': ' . $value['tablet'] . $unit );

	$css->put( $selector, '--' . $variableName . ': ' . $value['desktop'] . $unit );
}

function ct_units_config( $overrides = [] ) {
	$units = [
		[
			'unit' => 'px',
			'min' => 0,
			'max' => 40,
		],
		[
			'unit' => 'em',
			'min' => 0,
			'max' => 30,
		],
		[
			'unit' => '%',
			'min' => 0,
			'max' => 100,
		],
		[
			'unit' => 'vw',
			'min' => 0,
			'max' => 100,
		],
		[
			'unit' => 'vh',
			'min' => 0,
			'max' => 100,
		],
		[
			'unit' => 'pt',
			'min' => 0,
			'max' => 100,
		],
		[
			'unit' => 'rem',
			'min' => 0,
			'max' => 30,
		],
	];

	foreach ( $overrides as $single_override ) {
		foreach ( $units as $key => $single_unit ) {
			if ( $single_override['unit'] === $single_unit['unit'] ) {
				$units[ $key ] = $single_override;
			}
		}
	}

	return $units;
}