AsyncAwait.swift

// Copyright 2021 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

import FirebaseStorage

#if swift(>=5.5)
@available(iOS 15,*)
publicextensionStorageReference{
 /// Asynchronously downloads the object at the StorageReference to a Data object in memory.
 /// A Data object of the provided max size will be allocated, so ensure that the device has enough free
 /// memory to complete the download. For downloading large files, write may be a better option.
 ///
 /// - Parameters:
 /// - size: The maximum size in bytes to download. If the download exceeds this size
 /// the task will be cancelled and an error will be thrown.
 /// - Returns: Data object.
func data(maxSize:Int64)asyncthrows->Data{
typealiasDataContinuation=CheckedContinuation<Data,Error>
returntryawaitwithCheckedThrowingContinuation{(continuation:DataContinuation)in
 // TODO: Use task to handle progress and cancellation.
 _ =self.getData(maxSize: maxSize){ result in
 continuation.resume(with: result)
}
}
}

 /// Asynchronously uploads data to the currently specified StorageReference.
 /// This is not recommended for large files, and one should instead upload a file from disk.
 /// in the Firebase Console if desired.
 ///
 /// - Parameters:
 /// - uploadData: The Data to upload.
 /// - metadata: Optional StorageMetadata containing additional information (MIME type, etc.)
 /// about the object being uploaded.
 /// - Returns: StorageMetadata containing additional information about the object being uploaded.
func putDataAsync(_ uploadData:Data,
 metadata:StorageMetadata?=nil)asyncthrows->StorageMetadata{
typealiasMetadataContinuation=CheckedContinuation<StorageMetadata,Error>
returntryawaitwithCheckedThrowingContinuation{(continuation:MetadataContinuation)in
 // TODO: Use task to handle progress and cancellation.
 _ =self.putData(uploadData, metadata: metadata){ result in
 continuation.resume(with: result)
}
}
}

 /// Asynchronously uploads a file to the currently specified StorageReference.
 ///
 /// - Parameters:
 /// - url: A URL representing the system file path of the object to be uploaded.
 /// - metadata: Optional StorageMetadata containing additional information (MIME type, etc.)
 /// about the object being uploaded.
 /// - Returns: StorageMetadata containing additional information about the object being uploaded.
func putFileAsync(from url:URL,
 metadata:StorageMetadata?=nil)asyncthrows->StorageMetadata{
typealiasMetadataContinuation=CheckedContinuation<StorageMetadata,Error>
returntryawaitwithCheckedThrowingContinuation{(continuation:MetadataContinuation)in
 // TODO: Use task to handle progress and cancellation.
 _ =self.putFile(from: url, metadata: metadata){ result in
 continuation.resume(with: result)
}
}
}

 /// Asynchronously downloads the object at the current path to a specified system filepath.
 ///
 /// - Parameters:
 /// - fileUrl: A URL representing the system file path of the object to be uploaded.
 /// - Returns: URL pointing to the file path of the downloaded file.
func writeAsync(toFile fileURL:URL)asyncthrows->URL{
typealiasURLContinuation=CheckedContinuation<URL,Error>
returntryawaitwithCheckedThrowingContinuation{(continuation:URLContinuation)in
 // TODO: Use task to handle progress and cancellation.
 _ =self.write(toFile: fileURL){ result in
 continuation.resume(with: result)
}
}
}
}
#endif