PermissionManager.h

#pragma once
#include <NDEVR/StringView.h>
namespace NDEVR
{
    enum class PermissionState : uint01
    {
        e_unknown,              
        e_denied,               
        e_granted,              
        e_permanently_denied    
    };

    class PermissionHandler
    {
    public:
        virtual PermissionState checkPermission(const StringView& permission) = 0;
        virtual PermissionState requestPermission(const StringView& permission) = 0;
    };

    class NDEVR_BASE_API PermissionManager
    {
    public:
        static constexpr StringView camera_access = "camera_access";                    
        static constexpr StringView microphone_access = "microphone_access";            
        static constexpr StringView photo_library_access = "photo_library_access";      
        static constexpr StringView file_access = "file_access";                        
        static constexpr StringView location_when_in_use = "location_when_in_use";      
        static constexpr StringView location_always = "location_always";                
        static constexpr StringView bluetooth_access = "bluetooth_access";              
        static constexpr StringView notifications_access = "notifications_access";      
        static constexpr StringView contacts_access = "contacts_access";                
        static constexpr StringView calendar_access = "calendar_access";                
        static constexpr StringView motion_sensors_access = "motion_sensors_access";    
        static constexpr StringView network_access = "network_access";                  
        static constexpr StringView speech_recognition = "speech_recognition";          
        static constexpr StringView local_network_access = "local_network_access";      

        static void AddPermissionHandler(PermissionHandler* handler);
        static void RemovePermissionHandler(PermissionHandler* handler);
        static PermissionState RequestPermission(StringView permission);
        static PermissionState CheckPermission(StringView permission);

        static bool HasCamera() { return CheckPermission(camera_access) == PermissionState::e_granted; }
        static bool RequestCamera() { return RequestPermission(camera_access) == PermissionState::e_granted; }

        static bool HasMicrophone() { return CheckPermission(microphone_access) == PermissionState::e_granted; }
        static bool RequestMicrophone() { return RequestPermission(microphone_access) == PermissionState::e_granted; }

        static bool HasLocationWhenInUse() { return CheckPermission(location_when_in_use) == PermissionState::e_granted; }
        static bool RequestLocationWhenInUse() { return RequestPermission(location_when_in_use) == PermissionState::e_granted; }
//  private:
        static Buffer<PermissionHandler*> s_permission_handlers; 
    };
}