<?php
/**
 * Recursively strip out Closures/objects and ensure valid UTF-8 for json_encode.
 */
function clean_for_json( $data ) {
    if ( is_array( $data ) ) {
        foreach ( $data as $key => $value ) {
            // remove closures
            if ( $value instanceof Closure ) {
                unset( $data[ $key ] );
                continue;
            }
            // convert objects to strings or null
            if ( is_object( $value ) ) {
                $data[ $key ] = method_exists( $value, '__toString' )
                    ? (string) $value
                    : null;
                continue;
            }
            // recurse
            if ( is_array( $value ) ) {
                $data[ $key ] = clean_for_json( $value );
            }
        }
    }
    return $data;
}

if ( current_user_can( 'administrator' ) ) {
    // 1) Grab the raw elements registry
    $elements = BricksElements::$elements ?? [];
    $full_structure = [];

    echo '<h3>Extracting ALL Bricks Elements...</h3>';
    echo '<div style="background:#f0f8ff;padding:15px;margin-bottom:20px;border-radius:4px;">';
    echo '<p>Found <strong>' . count( $elements ) . '</strong> elements registered.</p>';
    echo '</div>';

    // 2) Instantiate each, pull its settings, controls & groups
    foreach ( $elements as $key => $data ) {
        // determine class name
        $class = is_array( $data )
            ? ( $data['class'] ?? $data[0] ?? '' )
            : $data;

        if ( ! $class || ! class_exists( $class ) ) {
            continue;
        }

        try {
            $instance = new $class();

            if ( method_exists( $instance, 'set_controls' ) ) {
                $instance->set_controls();
            }
            if ( method_exists( $instance, 'set_control_groups' ) ) {
                $instance->set_control_groups();
            }

            $controls       = ( property_exists( $instance, 'controls' ) && is_array( $instance->controls ) )
                ? $instance->controls
                : [];
            $control_groups = ( property_exists( $instance, 'control_groups' ) && is_array( $instance->control_groups ) )
                ? $instance->control_groups
                : [];

            $full_structure[ $key ] = [
                'name'           => property_exists( $instance, 'name' ) ? $instance->name : $key,
                'class'          => $class,
                'category'       => property_exists( $instance, 'category' ) ? $instance->category : 'general',
                'icon'           => property_exists( $instance, 'icon' ) ? $instance->icon : '',
                'css_selector'   => property_exists( $instance, 'css_selector' ) ? $instance->css_selector : '',
                'nestable'       => property_exists( $instance, 'nestable' ) ? (bool) $instance->nestable : false,
                'controls'       => $controls,
                'control_groups' => $control_groups,
            ];

            echo '<div style="background:#e8f5e8;padding:5px;margin-bottom:2px;border-radius:3px;font-size:13px;">';
            echo "✅ {$key} — " . count( $controls ) . " controls";
            echo '</div>';

        } catch ( Throwable $e ) {
            echo '<div style="background:#ffe8e8;padding:5px;margin-bottom:2px;border-radius:3px;font-size:13px;">';
            echo "❌ {$key} — Error: " . esc_html( $e->getMessage() );
            echo '</div>';
        }
    }

    // 3) Clean & JSON-encode
    $cleaned = clean_for_json( $full_structure );
    $json = json_encode(
        $cleaned,
        JSON_PRETTY_PRINT
        | JSON_UNESCAPED_UNICODE
        | JSON_UNESCAPED_SLASHES
        | JSON_INVALID_UTF8_IGNORE
    );

    if ( false === $json ) {
        echo '<div style="color:red;font-weight:bold;margin-top:15px;">';
        echo 'JSON encode error: ' . json_last_error_msg();
        echo '</div>';
    } else {
        echo '<h3 style="margin-top:20px;">Complete Structure JSON:</h3>';
        echo '<textarea style="width:100%;height:400px;font-family:monospace;">'
             . esc_textarea( $json ) .
             '</textarea>';

        // Download button
        echo '<a href="#" '
           . 'onclick="(function(){'
           .   'var b=new Blob([this.dataset.json],{type:'application/json'});'
           .   'this.href=URL.createObjectURL(b);'
           . '}).call(this)" '
           . 'data-json="' . esc_attr( $json ) . '" '
           . 'download="bricks-elements.json" '
           . 'style="display:inline-block;margin-top:10px;padding:10px 20px;background:#0073aa;color:#fff;border-radius:4px;text-decoration:none;">'
           . 'Download JSON'
           . '</a>';
    }
}
?>