public override ISharedMessageChainBuilder Add(ISharedChatMessage message)
{
if (_builtMessages != null)
{
throw new InvalidOperationException("由于之前进行过构建操作, 无法添加新的消息实例");
}
return(base.Add(message));
}
public override ISharedMessageChainBuilder Add(ISharedChatMessage message)
{
if (message is not IChatMessage)
{
throw new InvalidOperationException($"添加的消息实例 {message.GetType().FullName} 不实现 {typeof(IChatMessage).FullName}");
}
return(base.Add(message));
}
private async Task <int> CommonSendMessageAsync(string action, long?qqNumber, long?groupNumber, ISharedChatMessage[] chain, int?quoteMsgId, CancellationToken token = default)
{
InternalSessionInfo session = SafeGetSession();
if (chain == null || chain.Length == 0)
{
throw new ArgumentException("消息链必须为非空且至少有1条消息。");
}
int emptyPlainCount = 0;
for (int i = 0; i < chain.Length; i++)
{
ISharedChatMessage msg = chain[i];
if (msg is not IChatMessage)
{
throw new ArgumentException($"不允许发送未实现 {typeof(IChatMessage).FullName} 接口的消息。");
}
if (msg is ISourceMessage)
{
throw new ArgumentException("无法发送基本信息(SourceMessage)。");
}
if (msg is IQuoteMessage)
{
throw new ArgumentException("无法发送引用信息(QuoteMessage), 请使用quoteMsgId参数进行引用。");
}
if (msg is IPlainMessage pm && string.IsNullOrEmpty(pm.Message))
{
emptyPlainCount++;
}
}
if (emptyPlainCount == chain.Length)
{
throw new ArgumentException("消息链仅含文本消息且所有文本均为空。");
}
// 前边已经检查了所有元素均实现了 IChatMessage 接口, 但直接强制转换数组类型会引发 InvalidCastException, 所以玩一点 trick
IEnumerable <IChatMessage> convertedChain = Unsafe.As <ISharedChatMessage[], IEnumerable <IChatMessage> >(ref chain);
CreateLinkedUserSessionToken(session.Token, token, out CancellationTokenSource? cts, out token);
var payload = new
{
sessionKey = session.SessionKey,
qq = qqNumber,
group = groupNumber,
quote = quoteMsgId,
messageChain = convertedChain
};
using JsonDocument j = await _client.PostAsJsonAsync($"{_options.BaseUrl}/{action}", payload, _chatMessageSerializingOptions, token).GetJsonAsync(token).DisposeWhenCompleted(cts).ConfigureAwait(false);
JsonElement root = j.RootElement;
root.EnsureApiRespCode();
return(root.GetProperty("messageId").GetInt32());
}