ModuleInstancePermissions.php

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<?php

namespace BristolSU\Support\Permissions\Testers;

use BristolSU\ControlDB\Contracts\Models\Group;
use BristolSU\ControlDB\Contracts\Models\Role;
use BristolSU\ControlDB\Contracts\Models\User;
use BristolSU\Support\Logic\Contracts\LogicTester;
use BristolSU\Support\ModuleInstance\ModuleInstance;
use BristolSU\Support\Permissions\Contracts\Models\Permission;
use BristolSU\Support\Permissions\Contracts\Tester;
use Illuminate\Database\Eloquent\ModelNotFoundException;

class ModuleInstancePermissions extends Tester
{

    private $logicTester;

    public function __construct(LogicTester $logicTester)
    {
        $this->logicTester = $logicTester;
    }

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

        try {
            $permissionValue = $moduleInstance->moduleInstancePermissions()
                ->where('ability', $permission->getAbility())->firstOrFail();
            if ($permissionValue->logic !== null) {
                return $this->logicTester->evaluate($permissionValue->logic, $user, $group, $role);

            }
        } catch (ModelNotFoundException $e) {}
        
        return null;
    }
}