<?php
declare(strict_types=1);
defined('ABSPATH') || exit;

/**
 * Theme options store: single option `xshop_settings`.
 * Full options UI ships in M6; this file only registers the setting with sanitization.
 */

add_action('init', 'xshop_register_settings');

function xshop_register_settings(): void {
    register_setting('xshop_settings', 'xshop_settings', [
        'type'              => 'array',
        'sanitize_callback' => 'xshop_sanitize_settings',
        'default'           => xshop_default_settings(),
        'show_in_rest'      => false,
    ]);
}

function xshop_default_settings(): array {
    return [
        'color_mode'       => 'light', // light|dark|auto
        'header_layout'    => 'classic', // classic|centered|minimal
        'footer_layout'    => 'four-col',
        'shop_columns'     => 3,
        'product_card'     => 'default',
        'enable_dark_mode' => '0',
        'custom_css'       => '',
    ];
}

function xshop_sanitize_settings($value): array {
    if (!is_array($value)) { $value = []; }
    $defaults = xshop_default_settings();
    $out = $defaults;
    if (isset($value['color_mode'])) {
        $out['color_mode'] = in_array($value['color_mode'], ['light','dark','auto'], true) ? $value['color_mode'] : $defaults['color_mode'];
    }
    if (isset($value['header_layout'])) {
        $out['header_layout'] = in_array($value['header_layout'], ['classic','centered','minimal'], true) ? $value['header_layout'] : $defaults['header_layout'];
    }
    if (isset($value['footer_layout'])) {
        $out['footer_layout'] = sanitize_key((string) $value['footer_layout']);
    }
    if (isset($value['shop_columns'])) {
        $out['shop_columns'] = min(6, max(1, absint($value['shop_columns'])));
    }
    if (isset($value['product_card'])) {
        $out['product_card'] = in_array($value['product_card'], ['compact','default','detailed'], true) ? $value['product_card'] : $defaults['product_card'];
    }
    if (isset($value['enable_dark_mode'])) {
        $out['enable_dark_mode'] = $value['enable_dark_mode'] ? '1' : '0';
    }
    if (isset($value['custom_css'])) {
        // Allow CSS – wp_strip_all_tags + wp_kses with empty allow-list would strip everything;
        // use sanitization that preserves CSS: wp_strip_all_tags is too aggressive, so allow raw but trim.
        $out['custom_css'] = trim(wp_strip_all_tags((string) $value['custom_css']));
    }
    return $out;
}