<?php

namespace App\Actions\Projects;

use App\Actions\Permissions\PermissionService;
use App\Enums\Permission;
use App\Models\Project;
use App\Models\User;
use Illuminate\Database\Eloquent\Collection;

class ListVisibleProjects
{
    public function __construct(
        private readonly PermissionService $permissionService,
    ) {}

    /**
     * @return Collection<int, Project>
     */
    public function handle(User $user): Collection
    {
        $projectQuery = Project::query()
            ->orderByDesc('id');

        if ($this->permissionService->allows($user, Permission::GlobalAdmin)) {
            return $projectQuery->get();
        }

        $viewableProjectIds = $this->permissionService->viewableProjectIds($user);

        if ($viewableProjectIds === []) {
            return new Collection;
        }

        return $projectQuery
            ->whereIn('id', $viewableProjectIds)
            ->get();
    }
}