<?php
/**
 * Includes -> Components -> Hover color
 *
 */
if ( ! defined( 'ABSPATH' ) ) exit;


if ( ! function_exists( 'tbkkt_hover_color_is_valid_token' ) ) :
	function tbkkt_hover_color_is_valid_token( string $value ): bool {
		$value = trim( $value );
		if ( $value === '' ) return false;
		if ( preg_match( '/^#([0-9a-f]{3}|[0-9a-f]{6})$/i', $value ) ) return true;
		if ( preg_match( '/^(rgb|hsl)a?\(/i', $value ) ) return true;
		if ( preg_match( '/^var\\(\\s*--wp--preset--color--/i', $value ) ) return true;

		return (bool) preg_match( '/^[a-z]{3,40}$/i', $value );
	}
endif;


if ( ! function_exists( 'tbkkt_hover_color_normalize_token' ) ) :
	function tbkkt_hover_color_normalize_token( string $value ): string {
		$value = trim( $value );
		if ( $value === '' ) return '';
		if ( preg_match( '/^var\\(/i', $value ) ) return $value;
		if ( preg_match( '/^#([0-9a-f]{3}|[0-9a-f]{6})$/i', $value ) ) return $value;
		if ( preg_match( '/^(rgb|hsl)a?\\(/i', $value ) ) return $value;
		if ( preg_match( '/^[a-z0-9]+(?:-[a-z0-9]+)*$/i', $value ) ) :
			return 'var(--wp--preset--color--' . strtolower( $value ) . ')';
		endif;
		if ( preg_match( '/^[a-z]{3,40}$/i', $value ) ) return $value;

		return '';
	}
endif;


if ( ! function_exists( 'tbkkt_hover_color_class_names' ) ) :
	function tbkkt_hover_color_class_names( bool $has_hover_text, bool $has_hover_bg ): array {
		$classes = array();
		if ( $has_hover_text ) :
			$classes[] = 'tbkkt-has-text-color-hover';
		endif;
		if ( $has_hover_bg ) :
			$classes[] = 'tbkkt-has-background-hover';
		endif;

		return $classes;
	}
endif;


if ( ! function_exists( 'tbkkt_hover_color_build_style_fragment' ) ) :
	function tbkkt_hover_color_build_style_fragment( string $hover_text_raw, string $hover_bg_raw ): string {
		$text = tbkkt_hover_color_normalize_token( $hover_text_raw );
		$bg   = tbkkt_hover_color_normalize_token( $hover_bg_raw );
		$parts = array();
		if ( tbkkt_hover_color_is_valid_token( $text ) ) :
			$parts[] = '--tbkkt--hover-color--text-color:' . esc_attr( $text ) . ';';
		endif;
		if ( tbkkt_hover_color_is_valid_token( $bg ) ) :
			$parts[] = '--tbkkt--hover-color--background-color:' . esc_attr( $bg ) . ';';
		endif;

		return implode( '', $parts );
	}
endif;