Fix bug when cmd is empty

command-manager.go

@@ -116,6 +116,10 @@ func (c *CommandManager) OnMessage(session *discordgo.Session, m *discordgo.Mess
 		}
 	}
 
+	if len(cmd) < 1 {
+		return
+	}
+
 	var command *Command
 	invoked := cmd[0]
 	if cmnd, ok := c.Commands[invoked]; ok {
@@ -125,6 +129,13 @@ func (c *CommandManager) OnMessage(session *discordgo.Session, m *discordgo.Mess
 		return
 	}
 
+	if command.SanitizeEveryone {
+		for i := 1; i < len(cmd); i++ {
+			cmd[i] = strings.ReplaceAll(cmd[i], "@everyone", "@\ufff0everyone")
+			cmd[i] = strings.ReplaceAll(cmd[i], "@here", "@\ufff0here")
+		}
+	}
+
 	if !CheckPermissions(session, m.Author.ID, *channel, command.RequiredPermissions) {
 		ctx := Context{
 			Session:      session,

structs.go

@@ -48,6 +48,8 @@ type Command struct {
 	Hidden bool
 	// Permissions that are required for the command to function
 	RequiredPermissions Permission
+	// Should the message content be sanitized before invoking the command
+	SanitizeEveryone bool
 	// Function to invoke when command is called
 	Invoke CommandInvokeFunc
 }