<?php
add_action('elementor/frontend/widget/before_render', function($widget) {
    if ($widget->get_name() !== 'nested-accordion') return;

    $classes = $widget->get_settings('_css_classes');
    if (empty($classes)) return;

    // Match class like 'accordion-json-repeater-something'
    if (!preg_match('/accordion-json-repeater-([a-zA-Z0-9_-]+)/', $classes, $matches)) return;

    $field_key = $matches[1];

    // Get the JSON from the custom field
    $json = get_post_meta(get_the_ID(), $field_key, true);
    $accordion_items = json_decode($json, true);

    $items = $widget->get_settings('items');
    $children = $widget->get_children();

    // If field is empty or invalid, hide all items
    if (!is_array($accordion_items) || empty($accordion_items)) {
        $widget->set_settings('items', []);
        return;
    }

    // Limit to the number of accordion items
    $items = array_slice($items, 0, count($accordion_items));
    $children = array_slice($children, 0, count($accordion_items));

    foreach ($accordion_items as $i => $entry) {
        if (!isset($items[$i]) || !isset($children[$i])) continue;
        $items[$i]['item_title'] = isset($entry['title']) ? wp_kses_post($entry['title']) : '';

        foreach ($children[$i]->get_children() as $child_widget) {
            if ($child_widget->get_name() === 'text-editor') {
                $content = $child_widget->get_settings('editor');
                // Allow safe HTML in content
                $content = str_replace('#accordion-content', isset($entry['content']) ? wp_kses_post($entry['content']) : '', $content);
                $child_widget->set_settings('editor', $content);
            }
        }
    }

    $widget->set_settings('items', $items);
});