/// <summary>
/// Updates the user's current nickname based on their character.
/// </summary>
/// <param name="guildID">The ID of the guild the user is on.</param>
/// <param name="userID">The ID of the discord user.</param>
/// <param name="ct">The cancellation token in use.</param>
/// <returns>A modification result which may or may not have succeeded.</returns>
private async Task <Result> UpdateUserNickname
(
Snowflake guildID,
Snowflake userID,
CancellationToken ct = default
)
{
var getUser = await _users.GetOrRegisterUserAsync(userID, ct);
if (!getUser.IsSuccess)
{
return(Result.FromError(getUser));
}
var getServer = await _servers.GetOrRegisterServerAsync(guildID, ct);
if (!getServer.IsSuccess)
{
return(Result.FromError(getServer));
}
var user = getUser.Entity;
var server = getServer.Entity;
var getMember = await _guildAPI.GetGuildMemberAsync(guildID, userID, ct);
if (!getMember.IsSuccess)
{
return(Result.FromError(getMember));
}
var member = getMember.Entity;
if (!member.User.IsDefined(out var discordUser))
{
throw new InvalidOperationException();
}
string newNick;
var getNewCharacter = await _characters.GetCurrentCharacterAsync(user, server, ct);
if (getNewCharacter.IsSuccess)
{
var newCharacter = getNewCharacter.Entity;
newNick = newCharacter.Nickname.IsNullOrWhitespace()
? discordUser.Username
: newCharacter.Nickname;
}
else
{
newNick = member.User.Value.Username;
}
var modifyNickname = await _guildAPI.ModifyGuildMemberAsync(guildID, userID, newNick, ct : ct);
if (modifyNickname.IsSuccess)
{
return(modifyNickname);
}
if (modifyNickname.Error is RestResultError <RestError> rre)
{
return(rre.Error.Code is not DiscordError.MissingPermission
? modifyNickname
: Result.FromSuccess()); // squelch missing permission errors
}
if (modifyNickname.Error is not HttpResultError hre)
{
return(modifyNickname);
}
if (hre.StatusCode is not HttpStatusCode.Forbidden)
{
return(modifyNickname);
}
return(new UserError
(
"I'm forbidden from setting the user's nickname - typically, this means the target was the " +
"server owner. This is a Discord limitation, and can't be fixed."
));
}
