ModuleInstanceRoleOverridePermission.php

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<?php

namespace BristolSU\Support\Permissions\Testers;

use BristolSU\Support\ModuleInstance\ModuleInstance;
use BristolSU\Support\Permissions\Contracts\Models\Permission;
use BristolSU\Support\Permissions\Contracts\Tester;
use BristolSU\Support\Permissions\Models\ModelPermission;
use BristolSU\ControlDB\Contracts\Models\Group;
use BristolSU\ControlDB\Contracts\Models\Role;
use BristolSU\ControlDB\Contracts\Models\User;

class ModuleInstanceRoleOverridePermission extends Tester
{

    public function can(Permission $permission, ?User $user, ?Group $group, ?Role $role): ?bool
    {
        $moduleInstance = app(ModuleInstance::class);
        if ($role === null || $moduleInstance->exists === false) {
            return null;
        }

        $override = ModelPermission::role($role->id(), $permission->getAbility(), $moduleInstance->id())->first();

        return ($override === null ?null:$override->result);
    }
}