public static (bool exit, WalletBackend wallet) SelectionScreen()
{
while (true)
{
LaunchAction action = GetAction();
if (action == LaunchAction.Exit)
{
return(true, null);
}
/* Get the walletbackend, or an error. On error, return
* to selection screen. */
switch (LaunchWallet.HandleAction(action))
{
case ILeft <Error> error:
{
RedMsg.WriteLine(
error.Value.errorMessage
);
YellowMsg.WriteLine("Returning to selection screen.\n");
continue;
}
case IRight <WalletBackend> wallet:
{
return(false, wallet.Value);
}
}
}
}
/* printableCommands = the commands to print on bad input.
* availableCommands = the commands that the inputted string is
* checked against.
*
* For example, we print basic commands, but can input both basic
* and advanced commands */
private static string ParseCommand(
IEnumerable <Command> printableCommands,
IEnumerable <Command> availableCommands,
string prompt)
{
string selection = null;
while (true)
{
/* Write the prompt message */
YellowMsg.Write(prompt);
selection = Console.ReadLine().ToLower();
/* \n == no-op */
if (selection == "")
{
continue;
}
/* Check if they entered a command or an number */
if (int.TryParse(selection, out int selectionNum))
{
/* We print 1, 2, 3, 4 etc to be user friendly but we want
* to access it with 0 indexing */
selectionNum--;
if (selectionNum < 0 ||
selectionNum >= availableCommands.Count())
{
RedMsg.Write("Bad input, expected a command " +
"name, or number from ");
YellowMsg.Write("1 ");
RedMsg.Write("to ");
YellowMsg.WriteLine(availableCommands.Count().ToString());
PrintCommands(printableCommands);
continue;
}
/* Set the selection to the command name chosen via
* the previously printed numbers */
selection = availableCommands.ElementAt(selectionNum)
.commandName;
}
else
{
/* Does the inputted command exist? */
if (!availableCommands.Any(c => c.commandName == selection))
{
Console.Write("Unknown command: ");
RedMsg.Write($"{selection}\n");
PrintCommands(printableCommands);
continue;
}
}
return(selection);
}
}
private static bool Exit(WalletBackend wallet)
{
YellowMsg.WriteLine("Saving wallet and shutting down...");
wallet.Save();
return(true);
}
private static void Save(WalletBackend wallet)
{
YellowMsg.WriteLine("Saving...");
wallet.Save();
YellowMsg.WriteLine("Saved!");
}
/* Writes out the coin name, version, and wallet name */
private static void StartupMsg()
{
YellowMsg.WriteLine($"{Globals.coinName} {Globals.version} "
+ $"{Globals.CLIWalletName}");
}
