/// <summary>
/// Set the executing command of a user.
/// </summary>
/// <param name="id">The id of the user</param>
/// <param name="cmd">The command to set as executing</param>
public void SetExecutingCommand(ulong id, IDiscordCommand cmd)
{
if (ExecutingCommand.ContainsKey(id))
{
ExecutingCommand[id] = cmd;
}
else
{
ExecutingCommand.Add(id, cmd);
}
}
/// <summary>
/// Handles a Discord Message and manages dynamic dispatch.
/// </summary>
/// <param name="msg">The Discord text message</param>
/// <param name="current_user">The id of the user that sent the message</param>
/// <returns></returns>
public async Task Handle(SocketMessage msg, ulong current_user)
{
// Check if the msg mentions the bot.
// TODO: Add conditional replies
if (msg.Content.Trim().StartsWith($"<@{current_user}>") || msg.Content.Trim().StartsWith($"<@!{current_user}>"))
{
// Send a message with the current server prefix and other help data.
await msg.Channel.SendMessageAsync(null, false,
new EmbedBuilder()
.WithTitle("Clubby")
.AddField("The server prefix is:", $"'{Program.config.DiscordBotPrefix}'\nRun `{Program.config.DiscordBotPrefix}help` for more info")
.Build());
}
// Check if the user that sent the message is executing a command
else if (ExecutingCommand.ContainsKey(msg.Author.Id) && ExecutingCommand[msg.Author.Id] != null)
{
// If the command is a cancel call, set the currently executing command to null and inform the user
if (msg.Content.StartsWith($"{Program.config.DiscordBotPrefix}cancel"))
{
await msg.Channel.SendMessageAsync($"{ExecutingCommand[msg.Author.Id].GetCommandHelp().CommandName} command execution has been cancelled!");
ExecutingCommand[msg.Author.Id] = null;
}
// Dispatch to the executing command
else
{
try
{
await ExecutingCommand[msg.Author.Id].Handle(msg, (msg.Channel as SocketGuildChannel) != null ? (msg.Channel as SocketGuildChannel).Guild : null, this);
}
catch (Exception e)
{
// If the command fails notify the user as to why.
await msg.Channel.SendError(e.Message);
}
}
}
// If the message is a command it will start with the current prefix
else if (msg.Content.StartsWith(Program.config.DiscordBotPrefix))
{
// Get the command name from the message
string command = ExtractCommand(msg.Content);
if (command == null)
{
var guess = command_names.GetBestMatch(msg.Content.Split(' ')[0].Substring(Program.config.DiscordBotPrefix.Length), 4);
if (guess == null)
{
await msg.Channel.SendError($"Couldn't find command: `{Program.config.DiscordBotPrefix}{msg.Content.Split(' ')[0].Substring(Program.config.DiscordBotPrefix.Length)}`");
}
else
{
await msg.Channel.SendError($"Couldn't find command: `{Program.config.DiscordBotPrefix}{msg.Content.Split(' ')[0].Substring(Program.config.DiscordBotPrefix.Length)}`\n\nDid you mean `{Program.config.DiscordBotPrefix}{guess.ToLower()}`");
}
return;
}
// Get the type of the command and construct an instance to handle the command.
IDiscordCommand cmd = commands.GetInstance(Construct_Identifier(command, (msg.Author as SocketGuildUser).ThenOrElse(
user => user.Guild.Id,
(ulong)0
)));
// If the command existed cmd will be non null
if (cmd != null)
{
// Get the minimum permission required to run this command
int perms = (int)cmd.GetMinimumPerms();
// Get the permission that the user holds
int user_perms = Program.config.DiscordPermissions.GetResolvedPerms(msg.Author, msg.IsFromOwner());
// Check if the user can use the command
if (user_perms >= perms)
{
// Sprinkle in a small chance of rebellion
if (rand.NextDouble() > 0.999)
{
await msg.Channel.SendMessageAsync(null, false, new EmbedBuilder().WithTitle("No").WithDescription("no").WithColor(Color.Red).Build());
return;
}
// If the bot is cooperative execute the command's local handler.
try
{
await cmd.Handle(msg, (msg.Channel as SocketGuildChannel) != null?(msg.Channel as SocketGuildChannel).Guild : null, this);
// Update the number of times this command has been used.
CommandExecutionIncrement(command);
}
catch (Exception e)
{
// If the command fails notify the user as to why.
await msg.Channel.SendError(e.Message);
File.WriteAllText("./last_error.txt", e.StackTrace);
}
}
// Reject the execution attempt if the user doesn't have the expected permissions
else
{
await msg.Channel.SendMessageAsync("You don't have permissions to use this command!");
}
}
else
{
// Couldn't find the command so let them know.
await msg.Channel.SendError($"Couldn't find command: `{Program.config.DiscordBotPrefix}{command}`");
}
}
}
public bool CommandExist(string commandName, out IDiscordCommand cmd)
{
cmd = Commands.SingleOrDefault(c => c.Name.ToLower().Trim() == commandName);
return(cmd != null);
}
