designtopack/public/site/plugins/user-projects/index.php

<?php

Kirby::plugin('adrienpayet/pdc-authorized-projects', [
  'userMethods' => [
    'currentProjects' => function() {
      $listed = page('projects')->children()->listed();
      if ($this->role() == 'admin' && $this->hasNoAssignedProjects()) {
        return $listed;
      }
      return $listed->filter(fn($project) => $project->users()->toUsers()->has($this));
    },
    'archivedProjects' => function() {
      $unlisted = page('projects')->children()->unlisted();
      if ($this->role() == 'admin' && $this->hasNoAssignedProjects()) {
        return $unlisted;
      }
      return $unlisted->filter(fn($project) => $project->users()->toUsers()->has($this));
    },
    'hasNoAssignedProjects' => function() {
      return page('projects')->children()->filter(fn($p) => $p->users()->toUsers()->has($this))->isEmpty();
    },
  ]
]);