#include "vulkanwidget_macos.h"

#ifdef __APPLE__

#import <QuartzCore/CAMetalLayer.h>
#import <AppKit/NSWindow.h>
#import <AppKit/NSView.h>
#include <QDebug>

void* createMetalLayer(void* nativeViewPtr)
{
    @autoreleasepool {
        NSView* view = (__bridge NSView*)nativeViewPtr;
        if (!view) {
            qDebug() << "createMetalLayer: Invalid NSView";
            return nullptr;
        }

        // Create CAMetalLayer
        CAMetalLayer* metalLayer = [CAMetalLayer layer];
        if (!metalLayer) {
            qDebug() << "createMetalLayer: Failed to create CAMetalLayer";
            return nullptr;
        }

        // Configure the metal layer
        metalLayer.pixelFormat = MTLPixelFormatBGRA8Unorm;
        metalLayer.framebufferOnly = YES;

        // Get the content scale factor for retina displays
        NSWindow* window = [view window];
        CGFloat scaleFactor = window ? [window backingScaleFactor] : 1.0;
        metalLayer.contentsScale = scaleFactor;

        // Set the layer's drawable size to match the view
        CGSize drawableSize = view.bounds.size;
        drawableSize.width *= scaleFactor;
        drawableSize.height *= scaleFactor;
        metalLayer.drawableSize = drawableSize;

        // Set view properties
        [view setWantsLayer:YES];
        [view setLayer:metalLayer];

        qDebug() << "createMetalLayer: Successfully created CAMetalLayer"
                 << "size:" << drawableSize.width << "x" << drawableSize.height
                 << "scale:" << scaleFactor;

        // Return retained pointer (caller must release)
        return (void*)CFBridgingRetain(metalLayer);
    }
}

void releaseMetalLayer(void* metalLayerPtr)
{
    if (metalLayerPtr) {
        CFRelease(metalLayerPtr);
        qDebug() << "releaseMetalLayer: CAMetalLayer released";
    }
}

#endif // __APPLE__