public static async Task <ICommandResult> Help(DiscordMessageContext context, [DisplayName("page | command"), HelpText("Specifies page number or gets help for this specific command")] string command = null, [HelpText("Whether or not to show parameter descriptions")] Verbosity verbosity = Verbosity.Default)
{
const int pageSize = 5;
string commandPrefix = CommandTools.GetCommandPrefix(context, context.Channel);
var builder = new EmbedBuilder
{
Title = "Help",
Color = new Color(33, 150, 243)
};
bool paginate = int.TryParse(command, out int page);
if (paginate)
{
command = null;
}
else if (command == null)
{
page = 1;
paginate = true;
}
if (verbosity == Verbosity.Default)
{
verbosity = command != null ? Verbosity.Verbose : Verbosity.Standard;
}
var commands = command == null
? commandMethods.Where(method => method.GetCustomAttribute <CommandScopeAttribute>()
?.ChannelTypes.Contains(context.ChannelType)
?? true)
.Where(method => method.GetCustomAttribute <PermissionsAttribute>()?.GetPermissionError(context) == null)
.ToList()
: GetCommands(command.StartsWith(commandPrefix)
? command.Substring(commandPrefix.Length)
: command)
.ToList();
if (commands.Count == 0 || commands[0] == null)
{
return(new ErrorResult($"The requested command {commandPrefix}{command} was not found"));
}
List <EmbedFieldBuilder> fields = new List <EmbedFieldBuilder>();
foreach (MethodInfo method in commands)
{
var title = new StringBuilder();
title.Append("`");
title.Append(string.Join("|", method.GetCustomAttribute <CommandAttribute>().Names.Select(name => $"{commandPrefix}{name}")));
title.Append(" ");
title.Append(string.Join(" ", method.GetParameters()
.Skip(1)
.Select(param => param.IsOptional
? $"[{param.GetCustomAttribute<DisplayNameAttribute>()?.Name ?? param.Name}{(param.IsDefined(typeof(JoinRemainingParametersAttribute)) ? "..." : "")}{(param.DefaultValue == null ? "" : $" = {param.DefaultValue}")}]"
public static async Task <ICommandResult> Run(string commandMessage, ICommandContext context, string prefix, bool awaitResult)
{
var args = commandMessage.Trim().Substring(prefix.Length).Split(' ');
string commandName = args[0];
args = CommandTools.ParseArguments(string.Join(" ", args.Skip(1)));
//MethodInfo command = GetCommand(commandName, args.Length);
var commands = GetCommands(commandName);
await DiscordBot.Log(context.LogMessage(commandName));
List <object> values = null;
ICommandResult error = null;
MethodInfo commandToRun = null;
foreach (var command in commands)
{
var parameters = command.GetParameters();
var requiredParameters = parameters.Where(param => !param.IsOptional).ToArray();
Type contextType = context.GetType();
if (!parameters[0].ParameterType.IsAssignableFrom(contextType))
{
string message = $"That command is not valid in the context {context.GetType().Name}";
error = error ?? new ErrorResult(message, "Invalid Context");
continue;
}
if (args.Length < requiredParameters.Length - 1)
{
string message = $"The syntax of the command was incorrect. The following parameters are required: `{string.Join("`, `", requiredParameters.Select(param => param.GetCustomAttribute<DisplayNameAttribute>()?.Name ?? param.Name).Skip(args.Length + 1))}`\nUse `{prefix}help {commandName}` for command info";
error = error ?? new ErrorResult(message, "Syntax Error");
continue;
}
if (context is DiscordMessageContext discordContext)
{
if (!(command.GetCustomAttribute <CommandScopeAttribute>()?.ChannelTypes.Contains(discordContext.ChannelType) ?? true))
{
string message = $"The command `{prefix}{commandName}` is not valid in the scope {discordContext.ChannelType}";
error = error ?? new ErrorResult(message, "Scope Error");
continue;
}
string permissionError = command.GetCustomAttribute <PermissionsAttribute>()?.GetPermissionError(discordContext);
if (permissionError != null)
{
error = error ?? new ErrorResult(permissionError, "Permission Error");
continue;
}
}
values = new List <object>
{
context
};
bool err = false;
for (int i = 1; i < parameters.Length; i++)
{
if (parameters[i].IsOptional && i > args.Length)
{
values.Add(Type.Missing);
continue;
}
if (i == parameters.Length - 1 && parameters[i].IsDefined(typeof(JoinRemainingParametersAttribute)))
{
if (parameters[i].ParameterType == typeof(string))
{
values.Add(string.Join(" ", args.Skip(i - 1)));
}
else if (parameters[i].ParameterType == typeof(string[]))
{
values.Add(args.Skip(i - 1).ToArray());
}
else
{
object converted = ConvertToType(parameters[i].ParameterType, string.Join(" ", args.Skip(i - 1)), context);
if (converted == null)
{
error = error ?? ThrowTypeError(context, string.Join(" ", args.Skip(i - 1)), parameters[i]);
err = true;
break;
}
values.Add(converted);
}
break;
}
var result = ConvertToType(parameters[i].ParameterType, args[i - 1], context);
if (result == null)
{
error = error ?? ThrowTypeError(context, args[i - 1], parameters[i]);
err = true;
break;
}
values.Add(result);
}
if (err)
{
continue;
}
error = null;
commandToRun = command;
break;
}
if (args.Length > 0 && context is DiscordMessageContext d && args[0] == "help" && commandName != "help")
{
var embed = new EmbedBuilder()
.WithDescription($"Did you mean `{prefix}help {commandName}`?")
.WithColor(new Color(0x2AC2E9))
.WithAuthor(author =>
{
author
.WithName("Help")
.WithIconUrl("https://www.shareicon.net/data/128x128/2016/08/18/809295_info_512x512.png");
});
await d.Reply("", embed : embed.Build());
}
if (error != null)
{
await context.ReplyError(error.Message, ((ErrorResult)error).Title);
return(error);
}
else
{
if (awaitResult)
{
return(await RunCommand(context, commandToRun, values.ToArray()));
}
#pragma warning disable 4014
RunCommand(context, commandToRun, values.ToArray());
#pragma warning restore 4014
return(new SuccessResult());
}
}
