public static async Task <IEnumerable <TOut> > Process <TIn, TOut>(
Func <IDistinctValuedDictionary <TIn, TIn>, Task <IDictionary <TIn, TOut> > > processor,
IDistinctEnumerable <TIn> inputs)
{
var inputsByInput = inputs.ToDictionarySameKeyAndValue().AsDistinctValued();
var resultsByInput = await processor(inputsByInput);
return(resultsByInput.Values);
}
Task <IDictionary <string, bool> > IFileSystemOperator.ExistsFiles(IDistinctEnumerable <string> filePaths)
{
var output = new Dictionary <string, bool>();
foreach (var filePath in filePaths)
{
var fileExists = FileHelper.Exists(filePath);
output.Add(filePath, fileExists);
}
return(Task.FromResult(output as IDictionary <string, bool>));
}
public static IDistinctEnumerable <string> GetFilePaths(this IStringlyTypedPathOperator stringlyTypedPathOperator, string directoryPath, IDistinctEnumerable <string> fileNames)
{
return(stringlyTypedPathOperator.GetFilePathsByFileName(directoryPath, fileNames)
.Values
.AsDistinct());
}
public static IDistinctValuedDictionary <string, string> GetFilePathsByFileName(this IStringlyTypedPathOperator stringlyTypedPathOperator, string directoryPath, IDistinctEnumerable <string> fileNames)
{
return(fileNames.ToDictionary(
fileName => fileName,
fileName => stringlyTypedPathOperator.GetFilePath(directoryPath, fileName))
.AsDistinctValued());
}
Task <IDictionary <string, IDistinctEnumerable <string> > > IFileSystemOperator.EnumerateFilePaths(IDistinctEnumerable <string> directoryPaths)
{
var output = new Dictionary <string, IDistinctEnumerable <string> >();
foreach (var directoryPath in directoryPaths)
{
var filePaths = DirectoryHelper.EnumerateFilePaths(directoryPath);
output.Add(directoryPath, filePaths);
}
return(Task.FromResult(output as IDictionary <string, IDistinctEnumerable <string> >));
}
public static Task <IDictionary <string, string> > ReadContentsByFilePath(this IFileSystemOperator @operator, IDistinctEnumerable <string> filePaths)
{
var filePathsByFilePath = filePaths.ToDictionarySameKeyAndValue().AsDistinctValued();
var contentsByFilePath = @operator.ReadContentsByKey(filePathsByFilePath);
return(contentsByFilePath);
}