<?php
/**
 * Functions and hooks for the Avada Block theme.
 *
 * @package xpertcodes/avada-press-block
 *
 * @since 1.0
 */

/**
 * Register theme pattern categories and patterns.
 *
 * @since 1.0
 */
function avadablock_register_pattern_categories() {
	/**
	 * Filter to modify pattern categories.
	 *
	 * @since 1.0
	 * @param array $categories Pattern categories.
	 */
	$categories = apply_filters(
		'avadablock_pattern_categories',
		[
			'avadablock-hero'           => __( 'Hero Sections', 'avada-press-block' ),
			'avadablock-features'       => __( 'Features', 'avada-press-block' ),
			'avadablock-content'        => __( 'Content', 'avada-press-block' ),
			'avadablock-call-to-action' => __( 'Call to Action', 'avada-press-block' ),
		]
	);

	// Register pattern categories.
	foreach ( $categories as $slug => $label ) {
		// Check if category already exists to avoid errors.
		$registry = \WP_Block_Pattern_Categories_Registry::get_instance();
		$existing = array_column( $registry->get_all_registered(), 'name' );
		
		if ( ! in_array( $slug, $existing, true ) ) {
			register_block_pattern_category( $slug, [ 'label' => $label ] );
		}
	}
}
add_action( 'init', 'avadablock_register_pattern_categories' );

/**
 * Manually register patterns from files.
 *
 * WordPress auto-discovers patterns, but we manually register them
 * to ensure they sync properly, especially when in subdirectories.
 *
 * @since 1.0
 */
function avadablock_register_patterns_from_files() {
	$pattern_files = [
		[
			'title'       => 'Modern Hero Section',
			'slug'        => 'avadablock/hero/modern-hero',
			'description' => 'A clean, modern hero section with responsive layout, headline, description, and CTA buttons.',
			'categories'  => [ 'avadablock-hero' ],
			'keywords'    => [ 'hero', 'banner', 'cta', 'header', 'introduction' ],
			'file'        => 'patterns/hero/modern-hero.php',
		],
		[
			'title'       => 'Three Column Features',
			'slug'        => 'avadablock/features/three-column-features',
			'description' => 'A three-column feature section with icons, headings, and descriptions.',
			'categories'  => [ 'avadablock-features' ],
			'keywords'    => [ 'features', 'services', 'columns', 'benefits' ],
			'file'        => 'patterns/features/three-column-features.php',
		],
		[
			'title'       => 'Call to Action Banner',
			'slug'        => 'avadablock/call-to-action/cta-banner',
			'description' => 'A centered call-to-action section with heading, description, and button.',
			'categories'  => [ 'avadablock-call-to-action' ],
			'keywords'    => [ 'cta', 'call to action', 'banner', 'button' ],
			'file'        => 'patterns/call-to-action/cta-banner.php',
		],
	];

	foreach ( $pattern_files as $pattern ) {
		$file_path = get_template_directory() . '/' . $pattern['file'];
		if ( file_exists( $file_path ) ) {
			$file_content = file_get_contents( $file_path );
			
			// Extract content after the closing PHP tag and comment header.
			$content = preg_replace( '/^.*?\?>\s*\n/s', '', $file_content );
			
			// Clean up any remaining PHP tags or comments.
			$content = preg_replace( '/^<\?php\s*\n/', '', $content );
			$content = trim( $content );

			if ( ! empty( $content ) ) {
				register_block_pattern(
					$pattern['slug'],
					[
						'title'       => $pattern['title'],
						'description' => $pattern['description'],
						'categories'  => $pattern['categories'],
						'keywords'    => $pattern['keywords'],
						'content'     => $content,
					]
				);
			}
		}
	}
}
add_action( 'init', 'avadablock_register_patterns_from_files' );

/**
 * Register block styles.
 *
 * @since 1.0
 */
function avadablock_register_block_styles() {
	// Register outline style for button block.
	register_block_style(
		'core/button',
		[
			'name'         => 'outline',
			'label'        => __( 'Outline', 'avada-press-block' ),
			'inline_style' => '.wp-block-button.is-style-outline .wp-block-button__link {
				background: transparent !important;
				border: 2px solid currentColor;
				transition: all 0.3s ease;
			}
			.wp-block-button.is-style-outline .wp-block-button__link:hover {
				background: var(--wp--preset--color--background) !important;
				transform: translateY(-2px);
				box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
			}',
		]
	);
}
add_action( 'init', 'avadablock_register_block_styles' );

/**
 * Add theme supports.
 *
 * @since 1.0
 */
function avadablock_theme_setup() {
	add_theme_support( 'responsive-embeds' );
	add_theme_support( 'post-thumbnails' );
	add_theme_support( 'title-tag' );
	add_theme_support( 'editor-styles' );
	add_theme_support( 'wp-block-styles' );
	add_theme_support( 'align-wide' );


	// Add custom logo support.
	add_theme_support(
		'custom-logo',
		[
			'height'      => 100,
			'width'       => 400,
			'flex-height' => true,
			'flex-width'  => true,
			'header-text' => [ 'site-title', 'site-description' ],
		]
	);

	/**
	 * Action hook after theme setup.
	 *
	 * @since 1.0
	 */
	do_action( 'avadablock_after_theme_setup' );
}
add_action( 'after_setup_theme', 'avadablock_theme_setup' );

/**
 * Enqueue sticky header script if enabled.
 *
 * @since 1.0
 */
function avadablock_enqueue_sticky_header() {
	if ( ! function_exists( 'wp_get_global_settings' ) ) {
		return;
	}

	$settings = wp_get_global_settings();
	$sticky   = $settings['custom']['header']['sticky'] ?? false;

	if ( $sticky ) {
		wp_enqueue_script( 'avadablock-prefetch' );
		wp_add_inline_script(
			'avadablock-prefetch',
			"(function() {
				const header = document.querySelector('.avadablock-site-header');
				if (header) {
					let lastScroll = 0;
					window.addEventListener('scroll', function() {
						const currentScroll = window.pageYOffset || document.documentElement.scrollTop;
						if (currentScroll > 100) {
							header.classList.add('avadablock-header-sticky');
						} else {
							header.classList.remove('avadablock-header-sticky');
						}
						lastScroll = currentScroll;
					});
				}
			})();",
			'after'
		);
	}
}
add_action( 'wp_enqueue_scripts', 'avadablock_enqueue_sticky_header', 20 );

/**
 * Add additional theme features.
 *
 * @since 1.0
 */
function avadablock_additional_features() {
	// Add support for wide and full-width blocks.
	add_theme_support( 'align-wide' );

	// Add support for custom line height.
	add_theme_support( 'custom-line-height' );

	// Add support for custom units.
	add_theme_support( 'custom-units', [ 'px', 'em', 'rem', 'vh', 'vw', '%' ] );

	/**
	 * Filter to add custom theme features.
	 *
	 * @since 1.0
	 */
	do_action( 'avadablock_additional_features' );
}
add_action( 'after_setup_theme', 'avadablock_additional_features' );

/**
 * Customize excerpt length.
 *
 * @since 1.0
 * @param int $length Excerpt length.
 * @return int Modified excerpt length.
 */
function avadablock_excerpt_length( $length ) {
	/**
	 * Filter the excerpt length.
	 *
	 * @since 1.0
	 * @param int $length Current excerpt length.
	 */
	return apply_filters( 'avadablock_excerpt_length', 30 );
}
add_filter( 'excerpt_length', 'avadablock_excerpt_length' );

/**
 * Customize excerpt more text.
 *
 * @since 1.0
 * @param string $more More text.
 * @return string Modified more text.
 */
function avadablock_excerpt_more( $more ) {
	/**
	 * Filter the excerpt more text.
	 *
	 * @since 1.0
	 * @param string $more Current more text.
	 */
	return apply_filters( 'avadablock_excerpt_more', '...' );
}
add_filter( 'excerpt_more', 'avadablock_excerpt_more' );

// Add global styles.
require_once 'includes/Styles.php';
new \AvadaBlock\Styles();

// Add scripts.
require_once 'includes/Scripts.php';
new \AvadaBlock\Scripts();

/**
 * Filter to enable separate core block assets loading.
 *
 * @since 1.0
 * @param bool $load_separate Whether to load separate assets.
 * @return bool
 */
add_filter( 'should_load_separate_core_block_assets', '__return_true' );

/**
 * Filter inline styles size limit.
 *
 * @since 1.0
 * @param int $size Size limit in bytes.
 * @return int
 */
add_filter(
	'styles_inline_size_limit',
	function( $size ) {
		/**
		 * Filter the inline styles size limit.
		 *
		 * @since 1.0
		 * @param int $size Current size limit.
		 */
		return apply_filters( 'avadablock_inline_styles_size_limit', 50000 );
	}
);