<?php
/**
 * Theme Options Settings API
 *
 * @package Apus_Theme
 * @since 1.0.0
 */

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

/**
 * Register all theme settings
 */
function apus_register_settings() {
    // Register main options group
    register_setting(
        'apus_theme_options_group',
        'apus_theme_options',
        array(
            'sanitize_callback' => 'apus_sanitize_options',
            'default' => apus_get_default_options(),
        )
    );

    // General Settings Section
    add_settings_section(
        'apus_general_section',
        __('General Settings', 'apus-theme'),
        'apus_general_section_callback',
        'apus-theme-options'
    );

    // Content Settings Section
    add_settings_section(
        'apus_content_section',
        __('Content Settings', 'apus-theme'),
        'apus_content_section_callback',
        'apus-theme-options'
    );

    // Performance Settings Section
    add_settings_section(
        'apus_performance_section',
        __('Performance Settings', 'apus-theme'),
        'apus_performance_section_callback',
        'apus-theme-options'
    );

    // Related Posts Settings Section
    add_settings_section(
        'apus_related_posts_section',
        __('Related Posts Settings', 'apus-theme'),
        'apus_related_posts_section_callback',
        'apus-theme-options'
    );

    // Social Share Settings Section
    add_settings_section(
        'apus_social_share_section',
        __('Social Share Buttons', 'apus-theme'),
        'apus_social_share_section_callback',
        'apus-theme-options'
    );
}
add_action('admin_init', 'apus_register_settings');

/**
 * Get default options
 *
 * @return array
 */
function apus_get_default_options() {
    return array(
        // General
        'site_logo'                     => 0,
        'site_favicon'                  => 0,
        'enable_breadcrumbs'            => true,
        'breadcrumb_separator'          => '>',
        'date_format'                   => 'd/m/Y',
        'time_format'                   => 'H:i',
        'copyright_text'                => sprintf(__('&copy; %s %s. All rights reserved.', 'apus-theme'), date('Y'), get_bloginfo('name')),
        'social_facebook'               => '',
        'social_twitter'                => '',
        'social_instagram'              => '',
        'social_linkedin'               => '',
        'social_youtube'                => '',

        // Content
        'excerpt_length'                => 55,
        'excerpt_more'                  => '...',
        'default_post_layout'           => 'right-sidebar',
        'default_page_layout'           => 'right-sidebar',
        'archive_posts_per_page'        => 10,
        'show_featured_image_single'    => true,
        'show_author_box'               => true,
        'enable_comments_posts'         => true,
        'enable_comments_pages'         => false,
        'show_post_meta'                => true,
        'show_post_tags'                => true,
        'show_post_categories'          => true,

        // Performance
        'enable_lazy_loading'           => true,
        'performance_remove_emoji'      => true,
        'performance_remove_embeds'     => false,
        'performance_remove_dashicons'  => true,
        'performance_defer_js'          => false,
        'performance_minify_html'       => false,
        'performance_disable_gutenberg' => false,

        // Related Posts
        'enable_related_posts'          => true,
        'related_posts_count'           => 3,
        'related_posts_taxonomy'        => 'category',
        'related_posts_title'           => __('Related Posts', 'apus-theme'),
        'related_posts_columns'         => 3,

        // Social Share Buttons
        'apus_enable_share_buttons'     => '1',
        'apus_share_text'               => __('Compartir:', 'apus-theme'),

        // Advanced
        'custom_css'                    => '',
        'custom_js_header'              => '',
        'custom_js_footer'              => '',
    );
}

/**
 * Section Callbacks
 */
function apus_general_section_callback() {
    echo '<p>' . __('Configure general theme settings including logo, branding, and social media.', 'apus-theme') . '</p>';
}

function apus_content_section_callback() {
    echo '<p>' . __('Configure content display settings for posts, pages, and archives.', 'apus-theme') . '</p>';
}

function apus_performance_section_callback() {
    echo '<p>' . __('Optimize your site performance with these settings.', 'apus-theme') . '</p>';
}

function apus_related_posts_section_callback() {
    echo '<p>' . __('Configure related posts display on single post pages.', 'apus-theme') . '</p>';
}

function apus_social_share_section_callback() {
    echo '<p>' . __('Configure social share buttons display on single post pages.', 'apus-theme') . '</p>';
}

/**
 * Sanitize all options
 *
 * @param array $input The input array
 * @return array The sanitized array
 */
function apus_sanitize_options($input) {
    $sanitized = array();

    if (!is_array($input)) {
        return $sanitized;
    }

    // General Settings
    $sanitized['site_logo'] = isset($input['site_logo']) ? absint($input['site_logo']) : 0;
    $sanitized['site_favicon'] = isset($input['site_favicon']) ? absint($input['site_favicon']) : 0;
    $sanitized['enable_breadcrumbs'] = isset($input['enable_breadcrumbs']) ? (bool) $input['enable_breadcrumbs'] : false;
    $sanitized['breadcrumb_separator'] = isset($input['breadcrumb_separator']) ? sanitize_text_field($input['breadcrumb_separator']) : '>';
    $sanitized['date_format'] = isset($input['date_format']) ? sanitize_text_field($input['date_format']) : 'd/m/Y';
    $sanitized['time_format'] = isset($input['time_format']) ? sanitize_text_field($input['time_format']) : 'H:i';
    $sanitized['copyright_text'] = isset($input['copyright_text']) ? wp_kses_post($input['copyright_text']) : '';

    // Social Media
    $social_fields = array('facebook', 'twitter', 'instagram', 'linkedin', 'youtube');
    foreach ($social_fields as $social) {
        $key = 'social_' . $social;
        $sanitized[$key] = isset($input[$key]) ? esc_url_raw($input[$key]) : '';
    }

    // Content Settings
    $sanitized['excerpt_length'] = isset($input['excerpt_length']) ? absint($input['excerpt_length']) : 55;
    $sanitized['excerpt_more'] = isset($input['excerpt_more']) ? sanitize_text_field($input['excerpt_more']) : '...';
    $sanitized['default_post_layout'] = isset($input['default_post_layout']) ? sanitize_text_field($input['default_post_layout']) : 'right-sidebar';
    $sanitized['default_page_layout'] = isset($input['default_page_layout']) ? sanitize_text_field($input['default_page_layout']) : 'right-sidebar';
    $sanitized['archive_posts_per_page'] = isset($input['archive_posts_per_page']) ? absint($input['archive_posts_per_page']) : 10;
    $sanitized['show_featured_image_single'] = isset($input['show_featured_image_single']) ? (bool) $input['show_featured_image_single'] : false;
    $sanitized['show_author_box'] = isset($input['show_author_box']) ? (bool) $input['show_author_box'] : false;
    $sanitized['enable_comments_posts'] = isset($input['enable_comments_posts']) ? (bool) $input['enable_comments_posts'] : false;
    $sanitized['enable_comments_pages'] = isset($input['enable_comments_pages']) ? (bool) $input['enable_comments_pages'] : false;
    $sanitized['show_post_meta'] = isset($input['show_post_meta']) ? (bool) $input['show_post_meta'] : false;
    $sanitized['show_post_tags'] = isset($input['show_post_tags']) ? (bool) $input['show_post_tags'] : false;
    $sanitized['show_post_categories'] = isset($input['show_post_categories']) ? (bool) $input['show_post_categories'] : false;

    // Performance Settings
    $sanitized['enable_lazy_loading'] = isset($input['enable_lazy_loading']) ? (bool) $input['enable_lazy_loading'] : false;
    $sanitized['performance_remove_emoji'] = isset($input['performance_remove_emoji']) ? (bool) $input['performance_remove_emoji'] : false;
    $sanitized['performance_remove_embeds'] = isset($input['performance_remove_embeds']) ? (bool) $input['performance_remove_embeds'] : false;
    $sanitized['performance_remove_dashicons'] = isset($input['performance_remove_dashicons']) ? (bool) $input['performance_remove_dashicons'] : false;
    $sanitized['performance_defer_js'] = isset($input['performance_defer_js']) ? (bool) $input['performance_defer_js'] : false;
    $sanitized['performance_minify_html'] = isset($input['performance_minify_html']) ? (bool) $input['performance_minify_html'] : false;
    $sanitized['performance_disable_gutenberg'] = isset($input['performance_disable_gutenberg']) ? (bool) $input['performance_disable_gutenberg'] : false;

    // Related Posts
    $sanitized['enable_related_posts'] = isset($input['enable_related_posts']) ? (bool) $input['enable_related_posts'] : false;
    $sanitized['related_posts_count'] = isset($input['related_posts_count']) ? absint($input['related_posts_count']) : 3;
    $sanitized['related_posts_taxonomy'] = isset($input['related_posts_taxonomy']) ? sanitize_text_field($input['related_posts_taxonomy']) : 'category';
    $sanitized['related_posts_title'] = isset($input['related_posts_title']) ? sanitize_text_field($input['related_posts_title']) : __('Related Posts', 'apus-theme');
    $sanitized['related_posts_columns'] = isset($input['related_posts_columns']) ? absint($input['related_posts_columns']) : 3;

    // Social Share Buttons
    $sanitized['apus_enable_share_buttons'] = isset($input['apus_enable_share_buttons']) ? sanitize_text_field($input['apus_enable_share_buttons']) : '1';
    $sanitized['apus_share_text'] = isset($input['apus_share_text']) ? sanitize_text_field($input['apus_share_text']) : __('Compartir:', 'apus-theme');

    // Advanced Settings
    $sanitized['custom_css'] = isset($input['custom_css']) ? apus_sanitize_css($input['custom_css']) : '';
    $sanitized['custom_js_header'] = isset($input['custom_js_header']) ? apus_sanitize_js($input['custom_js_header']) : '';
    $sanitized['custom_js_footer'] = isset($input['custom_js_footer']) ? apus_sanitize_js($input['custom_js_footer']) : '';

    return $sanitized;
}

/**
 * NOTE: All sanitization functions have been moved to inc/sanitize-functions.php
 * to avoid function redeclaration errors. This includes:
 * - apus_sanitize_css()
 * - apus_sanitize_js()
 * - apus_sanitize_integer()
 * - apus_sanitize_text()
 * - apus_sanitize_url()
 * - apus_sanitize_html()
 * - apus_sanitize_checkbox()
 * - apus_sanitize_select()
 */