Limit how many FluentCommunity Spaces a user can join. Applies to both Active and Pending memberships

MaxSpacesperUser.php

<?php

add_filter('rest_pre_dispatch', function ($result, $server, $request) {

    // If another handler already returned something, respect it
    if (!empty($result)) {
        return $result;
    }

    // Target only Space join REST route
    // Route example: /fluent-community/v2/spaces/{slug}/join
    $route = $request->get_route();

    if (
        strpos($route, '/fluent-community/v2/spaces/') !== 0 ||
        substr($route, -5) !== '/join'
    ) {
        return $result;
    }

    // Must be logged in
    $userId = get_current_user_id();
    if (!$userId) {
        return $result;
    }

    // Set max allowed spaces (default: 3)
    $maxSpaces = (int) apply_filters(
        'my_fcom_max_spaces_per_user',
        3,
        $userId,
        $request
    );

    // Make sure FluentCommunity is available
    if (!class_exists('\FluentCommunity\App\Models\SpaceUserPivot')) {
        return $result;
    }

    // Count how many spaces user already joined (active + pending)
    $joinedSpacesCount = \FluentCommunity\App\Models\SpaceUserPivot::where('user_id', $userId)
        ->whereIn('status', ['active', 'pending'])
        ->count();

    // Block joining if limit reached
    if ($joinedSpacesCount >= $maxSpaces) {
        return new \WP_Error(
            'fcom_space_limit_reached',
            sprintf(
                'You have already joined the maximum allowed number of Spaces (%d).',
                $maxSpaces
            ),
            [
                'status' => 403
            ]
        );
    }

    return $result;

}, 10, 3);

add_filter('my_fcom_max_spaces_per_user', function ($limit, $userId) {
    return 5; // Give the number of spaces user can join
}, 10, 2);