<?php
/**
 * Caliph Theme Functions
 *
 * This file contains the core functionality of the Caliph theme.
 * It initializes the theme, loads required files, and sets up basic configurations.
 * The functions.php file serves as the entry point for the theme's PHP functionality.
 *
 * @package WordPress
 * @subpackage Caliph
 * @since 1.0.0
 */

// Exit if accessed directly
if (! defined('ABSPATH')) {
    exit;
}

/**
 * Load theme core functionality
 * 
 * The class-loader.php file contains the main theme class and autoloader.
 * This file initializes the theme's core functionality and sets up hooks.
 */
require_once get_template_directory() . '/includes/class-loader.php';

/**
 * Enqueue theme assets
 */
function caliph_enqueue_theme_scripts() {
    // Enqueue main styles
    wp_enqueue_style(
        'caliph-style-index',
        get_template_directory_uri() . '/build/style-index.css',
        array(),
        wp_get_theme()->get('Version')
    );

    // Enqueue main script with proper dependencies from asset file
    $asset_path = get_template_directory() . '/build/index.asset.php';
    if (file_exists($asset_path)) {
        $asset_data = require $asset_path;
        wp_enqueue_script(
            'caliph-theme-main',
            get_template_directory_uri() . '/build/index.js',
            $asset_data['dependencies'],
            $asset_data['version'],
            true
        );
    }

    // Add inline CSS for skip link as backup
    $skip_link_css = "
    .skip-link {
        position: absolute !important;
        top: -40px !important;
        left: 6px !important;
        background: #000 !important;
        color: #fff !important;
        padding: 8px 16px !important;
        text-decoration: none !important;
        border-radius: 4px !important;
        z-index: 10000 !important;
        transition: top 0.3s ease !important;
        font-weight: bold !important;
        display: block !important;
        width: auto !important;
        height: auto !important;
        overflow: visible !important;
        clip: rect(1px, 1px, 1px, 1px);
    }
    .skip-link:focus {
        top: 42px !important;
        outline: 2px solid #fff !important;
        outline-offset: 2px !important;
        clip: auto !important;
        height: auto !important;
        width: auto !important;
        overflow: visible !important;
    }
    #main-content:focus {
        outline: none;
    }
    ";
    wp_add_inline_style('caliph-style-index', $skip_link_css);

    // Add hover effects CSS custom property based on setting
    $hover_effects_enabled = get_option('caliph_hover_effects', true);
    $hover_effects_css = ":root { --caliph-hover-effects-enabled: " . ($hover_effects_enabled ? '1' : '0') . "; }";
    wp_add_inline_style('caliph-style-index', $hover_effects_css);
    
    // Enqueue accessibility script
    wp_enqueue_script(
        'caliph-accessibility',
        get_template_directory_uri() . '/build/features/accessibility/index.js',
        array(),
        wp_get_theme()->get('Version'),
        true
    );
}
add_action('wp_enqueue_scripts', 'caliph_enqueue_theme_scripts');

/**
 * Register custom blocks
 */
function caliph_register_blocks() {
    // Register the Marquee block
    $marquee_block_path = get_template_directory() . '/build/features/marquee';
    if (file_exists($marquee_block_path . '/block.json')) {
        register_block_type_from_metadata($marquee_block_path);
    }
    
    // Register the Announcement Widget block
    $announcement_block_path = get_template_directory() . '/build/features/announcement-widget';
    if (file_exists($announcement_block_path . '/block.json')) {
        register_block_type_from_metadata($announcement_block_path);
    }
    
    // Register the SVG Icon block
    $svg_icon_block_path = get_template_directory() . '/build/features/svg-icon-block';
    if (file_exists($svg_icon_block_path . '/block.json')) {
        register_block_type_from_metadata($svg_icon_block_path);
    }
    
    // Register the Accordion block
    $accordion_block_path = get_template_directory() . '/build/features/accordion-block';
    if (file_exists($accordion_block_path . '/block.json')) {
        register_block_type_from_metadata($accordion_block_path);
    }
    
    // Register the Responsive Navigation Menu block
    $responsive_nav_menu_block_path = get_template_directory() . '/build/features/responsive-nav-menu';
    if (file_exists($responsive_nav_menu_block_path . '/block.json')) {
        register_block_type_from_metadata($responsive_nav_menu_block_path);
    }
    
    // Register the Card Widget block
    $card_widget_block_path = get_template_directory() . '/build/features/card-widget';
    if (file_exists($card_widget_block_path . '/block.json')) {
        register_block_type_from_metadata($card_widget_block_path);
    }
}
add_action('init', 'caliph_register_blocks');

// Add skip link for accessibility at the very top of the body
add_action('wp_body_open', function() {
    echo '<a href="#main-content" class="skip-link">Skip to content</a>';
});

// Custom blocks are now registered through block.json metadata in caliph_register_blocks()
/**
 * Initialize the theme
 * 
 * Creates a singleton instance of the main theme class.
 * This ensures the theme is properly initialized with all required functionality.
 */
if (class_exists('Caliph_Theme')) {
    Caliph_Theme::get_instance();
}