// Objective-C symbols missing from iOS Foundation and Metal.
#import <Foundation/Foundation.h>
#import "fx.h"

#ifdef FX_LIB_FOUNDATION
@interface NSAppleEventManager : NSObject
@end
@implementation NSAppleEventManager
+ (instancetype)sharedAppleEventManager { static NSAppleEventManager *m; static dispatch_once_t o; dispatch_once(&o, ^{ m = [self new]; }); return m; }
- (void)setEventHandler:(id)handler andSelector:(SEL)sel forEventClass:(uint32_t)c andEventID:(uint32_t)e { }
- (void)removeEventHandlerForEventClass:(uint32_t)c andEventID:(uint32_t)e { }
@end
#endif

#ifdef FX_LIB_METAL
#import <Metal/Metal.h>
FX_EXPORT NSArray *MTLCopyAllDevicesWithObserver(id *observer, void (^handler)(id, NSString *)) {
    if (observer) *observer = nil;
    id device = MTLCreateSystemDefaultDevice();
    return device ? @[device] : @[];
}
FX_EXPORT void MTLRemoveDeviceObserver(id observer) { }
#endif