<?php

function blocksy_compute_box_shadow_var_for($value) {
	if (
		! isset($value['enable'])
		||
		! $value['enable']
	) {
		return 'CT_CSS_SKIP_RULE';
	}

	if (
		$value['blur'] === 0
		&&
		$value['spread'] === 0
		&&
		$value['v_offset'] === 0
		&&
		$value['h_offset'] === 0
	) {
		return 'CT_CSS_SKIP_RULE';
	}

	$color = blocksy_get_colors([
		'default' => $value['color']
	], [
		'default' => $value['color']
	]);

	$box_shadow_components = [];

	if (isset($value['inset']) && $value['inset']) {
		$box_shadow_components[] = 'inset';
	}

	$box_shadow_components[] = $value['h_offset'] . 'px';
	$box_shadow_components[] = $value['v_offset'] . 'px';

	if (intval($value['blur']) !== 0) {
		$box_shadow_components[] = $value['blur'] . 'px';

		if (intval($value['spread']) !== 0) {
			$box_shadow_components[] = $value['spread'] . 'px';
		}
	}

	if (
		intval($value['blur']) === 0
		&&
		intval($value['spread']) !== 0
	) {
		$box_shadow_components[] = $value['blur'] . 'px';
		$box_shadow_components[] = $value['spread'] . 'px';
	}

	$box_shadow_components[] = $color['default'];

	return implode(' ', $box_shadow_components);
}

function blocksy_box_shadow_value($args = []) {
	return wp_parse_args(
		$args,
		[
			'blur' => 0,
			'spread' => 0,
			'v_offset' => 0,
			'h_offset' => 0,
			'inset' => false,
			'enable' => true,
			'color' => [
				'color' => 'rgba(44,62,80,0.2)',
			],
		]
	);
}

function blocksy_output_box_shadow($args = []) {
	$args = wp_parse_args(
		$args,
		[
			'css' => null,
			'tablet_css' => null,
			'mobile_css' => null,

			'selector' => null,

			'variableName' => 'boxShadow',
			'value' => null,

			'responsive' => false
		]
	);

	if (! $args['responsive']) {
		$args['css']->put(
			$args['selector'],
			'--' . $args['variableName'] .
			': ' . blocksy_compute_box_shadow_var_for($args['value'])
		);

		return;
	}

	$value = blocksy_expand_responsive_value($args['value']);

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

	$args['tablet_css']->put(
		$args['selector'],
		'--' . $args['variableName'] .
		': ' . blocksy_compute_box_shadow_var_for($value['tablet'])
	);

	$args['mobile_css']->put(
		$args['selector'],
		'--' . $args['variableName'] .
		': ' . blocksy_compute_box_shadow_var_for($value['mobile'])
	);
}