using System;

using PowerArgs;

using ScriptCs.Command;

namespace ScriptCs

{

internal static class Program

{

private static int Main(string[] args)

{

var commandArgs = ParseArguments(args) ?? new ScriptCsArgs { Repl = true };

var compositionRoot = new CompositionRoot(commandArgs);

compositionRoot.Initialize();

var logger = compositionRoot.GetLogger();

logger.Debug("Creating ScriptServiceRoot");

var scriptServiceRoot = compositionRoot.GetServiceRoot();

var commandFactory = new CommandFactory(scriptServiceRoot);

var command = commandFactory.CreateCommand(commandArgs);

var result = command.Execute();

return result == CommandResult.Success ? 0 : -1;

}

private static ScriptCsArgs ParseArguments(string[] args)

{

const string UnexpectedArgumentMessage = "Unexpected Argument: ";

if (args.Length <= 0) return null;

try

{

return Args.Parse<ScriptCsArgs>(args);

}

catch (ArgException ex)

{

if (ex.Message.StartsWith(UnexpectedArgumentMessage))

{

var token = ex.Message.Substring(UnexpectedArgumentMessage.Length);

Console.WriteLine("Parameter \"{0}\" is not supported!", token);

}

else

{

Console.WriteLine(ex.Message);

}

}

return new ScriptCsArgs();

}

}

}