Swift 5 How to add exif data to image get from PHAsset - swift

Question

I have this simply code to get an uiImage from Photo Library:
private func getDataOfMedia (asset:PHAsset) -> Data {
let requestOptions = PHImageRequestOptions()
requestOptions.isSynchronous = true
requestOptions.isNetworkAccessAllowed = true
let imgManager = PHImageManager.default()
var imgData = Data()
// Request Image
imgManager.requestImage(for: asset, targetSize: PHImageManagerMaximumSize, contentMode: .default, options: requestOptions) { (uiimage, info) in
if let uiimage = uiimage {
DispatchQueue.main.async {
if let imageData = uiimage.jpegData(compressionQuality: 1) {
imgData = imageData
}
}
}
}
return imgData
}
but, of course, I can't see the camera data, location data and exif data of the image saved from func getDataOfMedia(asset: asset), but if I download the same image directly from Photo, I can see camera data, location data and exif data.
How can I do to add camera data, location data and exif data to data that I have from requestimage of PHAsset?
How can I add the unique id, for example asset.localIdentifier, to know that I have download this image?
UPDATE
I managed to extract camera data, location data and exif data from an image from an asset object, with this code:
private func getDataOfImageC (asset:PHAsset, completion: #escaping (Data) -> Void) {
//For get exif data
let options = PHContentEditingInputRequestOptions()
options.isNetworkAccessAllowed = true //download asset metadata from iCloud if needed
asset.requestContentEditingInput(with: options) { (contentEditingInput: PHContentEditingInput?, _) -> Void in
let fullImage = CIImage(contentsOf: contentEditingInput!.fullSizeImageURL!)
let image = UIImage(ciImage: fullImage!)
print(fullImage!.properties)
for (key, value) in fullImage!.properties {
print("key: \(key) - value: \(value)")
}
completion(image.jpegData(compressionQuality: 1)!)
}
}
but turning CIImage to UIImage to Data format, to save it locally, it loses all camera data, location data and exif data.
I hope that someone help me.

Answer 1

After some study, this the code that work for me to save image (not video) from photoLibrary with all properties.
private func saveDataOfImageCI (asset:PHAsset, urlMedia: URL) {
//For get exif data
let options = PHContentEditingInputRequestOptions()
options.isNetworkAccessAllowed = true //download asset metadata from iCloud if needed
asset.requestContentEditingInput(with: options) { (contentEditingInput: PHContentEditingInput?, _) -> Void in
let url = contentEditingInput!.fullSizeImageURL!
let fullImage = CIImage(contentsOf: contentEditingInput!.fullSizeImageURL!)
do {
try CIContext().writeJPEGRepresentation(of: fullImage!,
to: urlMedia,
colorSpace: (fullImage?.colorSpace)!)
} catch {
print("error: \(error.localizedDescription)")
}
//To print properties data (exif, camera data, ....)
for (key, value) in fullImage!.properties {
print("key: \(key) - value: \(value)")
}
}
}