So i am creating a Discord Bot for my Discord Server but i can't figure out why it does not work. I think located the problem it's in my ReactionHandler but i am not sure what causes it?
I have tried to modify some of the code.. But i can't figure it out so i wanted to ask if somebody else knows what is wrong with my code... My code can be messy, but i hope it does not mind you. I will not show my "Commands" script because it's irrelevant to this problem!
private async Task Client_CheckTicket(SocketMessage arg)
{
try
{
var Message = arg as SocketUserMessage;
var Context = new SocketCommandContext(Client, Message);
if (Context.Channel.Id == debugchannel)
{
Console.WriteLine("Detected a debug message i wont be taking any actions against it");
return;
}
if (Context.User.IsBot)
{
String s = "";
String path = @"C:\Users\Alex\source\repos\discbot\ids.txt";
using (StreamReader sr = File.OpenText(path))
{
try
{
while ((s = sr.ReadLine()) != null)
{
await DebugMessage("Checking this message: " + Message.Content);
if (Context.Message.Content.Contains(s))
{
messageid = Message.Id;
await DebugMessage("added");
}
}
}
catch (Exception e)
{
await DebugMessage("Something went wrong... Exception was sent to console!");
Console.WriteLine(e);
return;
}
sr.Close();
}
if (messageid != 0)
{
path = @"C:\Users\Alex\source\repos\discbot\messageid.txt";
using (StreamWriter sr = File.AppendText(path))
{
sr.WriteLine(messageid);
sr.Close();
}
}
else
{
await DebugMessage("MessageID was 0 so i will not add it to my database");
return;
}
}
else
{
await DebugMessage("No pass");
}
} catch(Exception e)
{
await DebugMessage(e.ToString());
}
}
Whole code: https://pastebin.com/RrcBTdr0
Errors what i get from Output Debug:
Exception thrown: 'System.NullReferenceException' in discbot.dll
Exception thrown: 'System.NullReferenceException' in System.Private.CoreLib.dll
And on console i just get:
26.6.2019 17.20.10 at Gateway A ReactionAdded handler has thrown an unhandled exception.
I expect that the bot would message to a specific channel when a specific reaction is added to a "Ticket"
Without "Client.MessageReceived += Client_CheckTicket" and "Client.ReactionAdded += OnReactionAdded;" the other code works fine works. But when i add them back the thing just brakes...
Note: I do not get the DebugMessages on OnReactionAdded, so can there be something wrong with the execution?
private async Task OnReactionAdded(Cacheable<IUserMessage, ulong> cache, ISocketMessageChannel channel, SocketReaction thereaction)
{
await DebugMessage("React func started");
Can it be that when i assign/create a new variable it will overwrite a other variable because of memory usage?
MessageRecever(ik that's a typo):
private async Task Client_MessageReceived(SocketMessage arg)
{
var Message = arg as SocketUserMessage;
await ReactAsync(Message);
var Context = new SocketCommandContext(Client, Message);
if (Context.Message == null || Context.Message.Content == "") return;
if (Context.User.IsBot) return;
int ArgPos = 0;
if (!(Message.HasStringPrefix("nuked!", ref ArgPos) || Message.HasMentionPrefix(Client.CurrentUser, ref ArgPos))) return;
var Result = await Commands.ExecuteAsync(Context, ArgPos, null);
if (!Result.IsSuccess)
{
Console.WriteLine($"{DateTime.Now} at Commands Something went wrong with executing a nuke launch. Text: {Context.Message.Content} | Error: {Result.ErrorReason}");
await Context.Channel.SendMessageAsync($"{DateTime.Now} at Commands Something went wrong with executing a nuke launch. Text: {Context.Message.Content} | Error: {Result.ErrorReason}");
}
}
I have tried to locate the problem more and i think it's around here:
using (StreamReader sr = File.OpenText(path))
{
try
{
while ((s = sr.ReadLine()) != null)
{
DebugMessage("Checking this message: " + Message.Content);
if (Context.Message.Content.Contains(s))
{
messageid = Message.Id;
DebugMessage("added");
}
}
}
catch (Exception e)
{
DebugMessage("Something went wrong... Exception was sent to console!");
Console.WriteLine(e);
return;
}
sr.Close();
}
Finally i got some more specific Error's:
System.NullReferenceException: Object reference not set to an instance of an object. at discbot.Program.DebugMessage(String a) in C:\Users\Alex\source\repos\discbot\discbot\Program.cs:line 103 at discbot.Program.Client_CheckTicket(SocketMessage arg) in C:\Users\Alex\source\repos\discbot\discbot\Program.cs:line 222
Line 103: await Client.GetGuild(593114638770634763).GetTextChannel(593430696874213384).SendMessageAsync(a);
Line 222: await DebugMessage("No pass");
Yes, it's a nullreference error and there are alot of answers for them but i can't figure this out..
Console.WriteLine(a);
await Client.GetGuild(593114638770634763).GetTextChannel(593430696874213384).SendMessageAsync(a);
The WriteLine works, but the SenmessageAsync returns the NullReferenceException.. And i checked my server id and my channelid's are correct...
So the problem is in:
public async Task DebugMessage(string a)
{
Console.WriteLine(a);
await Client.GetGuild(593114638770634763).GetTextChannel(593430696874213384).SendMessageAsync(a);
}
and the null error is happening on the:
Client.GetGuild(593114638770634763).GetTextChannel(593430696874213384).SendMessageAsync(a);
Because when i do await DebugMessage("No pass"); the Console.WriteLine works but the second one does not? Any idea why it does not work?
The string "a" is not the cause because i replaced the a variable with this:
await Client.GetGuild(593114638770634763).GetTextChannel(593430696874213384).SendMessageAsync("ok");
And it still did not work...
And if you still don't understand what part is broken it's this:
await Client.GetGuild(593114638770634763).GetTextChannel(593430696874213384).SendMessageAsync(The variable is not causing this...);
Now i set it up like this:
public async Task DebugMessage(string a)
{
Console.WriteLine("Getting server");
var server = Client.GetGuild(593114638770634763);
Console.WriteLine("Getting chat");
var chat = server.GetTextChannel(593430696874213384);
Console.WriteLine("Writing to Chat");
await chat.SendMessageAsync(a);
Console.WriteLine("Succeeded");
}
And it failed on:
await chat.SendMessageAsync(a);
