using ScriptCs.Contracts;

namespace ScriptCs.ReplCommands

{

public class ExitCommand : IReplCommand

{

private readonly IConsole _console;

public string Description => "Exits the REPL";

public string CommandName => "exit";

public ExitCommand(IConsole console)

{

Guard.AgainstNullArgument("console", console);

_console = console;

}

public object Execute(IRepl repl, object[] args)

{

Guard.AgainstNullArgument("repl", repl);

var response = string.Empty;

var responseIsValid = false;

while (!responseIsValid)

{

response = (_console.ReadLine("Are you sure you wish to exit? (y/n):") ?? string.Empty).ToLowerInvariant();

responseIsValid = response == "y" || response == "n";

}

if (response == "y")

{

repl.Terminate();

}

return null;

}

}

}