public async Task <ExecutionStatus> Execute(ComparisonOptions initialOptions)
{
Console.Write($"{AppProperties.Name}> ");
var inputString = Console.ReadLine();
if (string.IsNullOrEmpty(inputString))
{
return(statusFactory.ConstructFaulted(
new MissingInputException(
"You must enter either a directory ('C:\\to\\some\\directory'), or a pair of files separated by a coma ('C:\\path\\to\\first.png,C:\\path\\to\\second.jpg').")));
}
if (CommandIsGiven(inputString, ProgramCommands.ForTermination))
{
return(statusFactory.ConstructTerminated());
}
if (CommandIsGiven(inputString, ProgramCommands.ForHelp))
{
Console.WriteLine(ConsoleInterface.GetHelpText());
return(statusFactory.ConstructNoOp());
}
var comparisonRequest = requestFactory.Construct(inputString);
if (CommandIsGiven(inputString, ProgramCommands.ToChangeOptions))
{
initialOptions = OverwriteComparisonOptions(initialOptions);
// We need to return here, so that we can reset the console
// input. Otherwise we'll accidentally attempt to process "options"
// as a directory.
return(statusFactory.ConstructUpdated(comparisonRequest, initialOptions));
}
var imageComparer = comparisonFactory.Construct(comparisonRequest, initialOptions);
Option <List <DeDupifyrResult> > duplicateResults = new None <List <DeDupifyrResult> >();
Action printInstructions;
// For now, just doing a try/catch at the highest level. I plan
// to have much better handling. I'll implement the `Either` monad
// and have the `Run` method return an instance of that. From there,
// I can determine whether to write an error out, or to write the results.
try
{
var sw = Stopwatch.StartNew();
var results = await imageComparer.Run(comparisonRequest);
sw.Stop();
Console.WriteLine($"Done in {sw.ElapsedMilliseconds} ms.");
duplicateResults = new Some <List <DeDupifyrResult> >(results);
printInstructions = imageComparer.PrintInstructions();
}
catch (Exception exception)
{
return(statusFactory.ConstructFaulted(exception));
}
return(statusFactory.ConstructSuccess(
comparisonRequest,
duplicateResults,
printInstructions));
}