public static async Task <ReferenceFile> GetFile(StorageFile referenceFile, ReferenceFileData referenceFileData)
{
if (referenceFileData == null || string.IsNullOrEmpty(referenceFileData.path))
{
return(new ReferenceFile(referenceFile, null)
{
LastError = new SafeWrapperResult(OperationErrorCode.InvalidArgument, new ArgumentNullException(), "The Reference File data is corrupt.")
});
}
SafeWrapper <StorageFile> file = await StorageHelpers.ToStorageItemWithError <StorageFile>(referenceFileData.path);
if (!file)
{
if (file == OperationErrorCode.NotFound)
{
// If NotFound, use custom exception for LoadCanvasFromCollection()
return(new ReferenceFile(referenceFile, null)
{
LastError = new SafeWrapperResult(OperationErrorCode.NotFound, new ReferencedFileNotFoundException(), "The file referenced could not be found.")
});
}
else
{
return(new ReferenceFile(referenceFile, null)
{
LastError = (SafeWrapperResult)file
});
}
}
return(new ReferenceFile(referenceFile, file));
}
internal static async Task <ReferenceFileData> ReadData(StorageFile referenceFile)
{
string data = await FileIO.ReadTextAsync(referenceFile);
ReferenceFileData referenceFileData = JsonConvert.DeserializeObject <ReferenceFileData>(data);
return(referenceFileData);
}
public static async Task <ReferenceFile> GetFile(StorageFile referenceFile)
{
// The file is not a Reference File
if (!IsReferenceFile(referenceFile))
{
return(null);
}
// The file does not exist
if (!StorageHelpers.Exists(referenceFile.Path))
{
return(new ReferenceFile(referenceFile, null)
{
LastError = new SafeWrapperResult(OperationErrorCode.NotFound, new FileNotFoundException(), "Couldn't resolve item associated with path.")
});
}
ReferenceFileData referenceFileData = await ReadData(referenceFile);
return(await GetFile(referenceFile, referenceFileData));
}
public async Task UpdateReferenceFile(ReferenceFileData referenceFileData)
{
string serialized = JsonConvert.SerializeObject(referenceFileData, Formatting.Indented);
await FileIO.WriteTextAsync(_innerFile, serialized);
}