internal async Task HandleOnReactionRemoved(
Cacheable <IUserMessage, ulong> cachedMessage, ISocketMessageChannel messageChannel, SocketReaction reaction)
{
if (!cachedMessage.HasValue || reaction.UserId == this.Client.CurrentUser.Id)
{
// Ignore the bot's own additions.
return;
}
if (!(reaction.Channel is IGuildChannel guildChannel))
{
// Only listen to guild reacts.
this.Logger.Verbose("Reaction removal ignored because it wasn't on a guild channel");
return;
}
if (!(reaction.User.IsSpecified && reaction.User.Value is IGuildUser guildUser))
{
this.Logger.Verbose("Reaction removal ignored because it wasn't by a guild user");
return;
}
// Issue: when we remove a reaction, this will remove the team they were on. How would we know this, outside
// of keeping state on this?
// When the user chooses two emojis, and the bot removes the second one, the event handler is called. We
// need to make sure that the user initiated this removal, which we can do by making sure that the player
// we're removing from the set has the same team as the emoji maps to.
// TODO: We may want to make this a dictionary of IDs to Players to make this operation efficient. We could
// use ContainsKey to do the contains checks efficiently.
await this.GetTournamentsManager(guildChannel.Guild).DoReadWriteActionOnCurrentTournamentForMemberAsync(
guildUser,
async currentTournament =>
{
Player player = this.GetPlayerFromReactionEventOrNull(
currentTournament, guildUser, cachedMessage.Id, reaction.Emote.Name, out string errorMessage);
if (player == null)
{
// User should have already received an error message from the add if it was relevant.
this.Logger.Verbose(
"Reaction addition ignored because it wasn't by a player. Message: {errorMessage}",
errorMessage);
return;
}
if (currentTournament.TryGetPlayerTeam(guildUser.Id, out Team storedTeam) &&
storedTeam == player.Team &&
currentTournament.TryRemovePlayer(guildUser.Id))
{
this.Logger.Debug("Player {id} left team {name}", player.Id, player.Team.Name);
await guildUser.SendMessageAsync(
BotStrings.YouHaveLeftTeam(player.Team.Name), options: RequestOptionsSettings.Default);
}
});
}
