private async Task SendPictureAsync2(IMiraiHttpSession session, string path) // 发图, 不同的是使用 IMessageChainBuilder 构造消息链
{
IImageMessage msg = await session.UploadPictureAsync(UploadTarget.Group, path);
Builders.IMessageChainBuilder builder = session.GetMessageChainBuilder();
builder.Add(msg);
await session.SendGroupMessageAsync(0, builder); // 自己填群号, 一般由 IGroupMessageEventArgs 提供
}
private async Task SendPictureAsync(IMiraiHttpSession session, string path) // 发图
{
// 你也可以使用另一个重载 UploadPictureAsync(PictureTarget, Stream)
// 当 mirai-api-http 在v1.7.0以下时将使用本地的HttpListener做图片中转
// UploadTarget.Friend 对应 IMiraiSession.SendFriendMessageAsync
IImageMessage msg = await session.UploadPictureAsync(UploadTarget.Group, path);
IChatMessage[] chain = new IChatMessage[] { msg }; // 数组里边可以加上更多的 IMessageBase, 以此达到例如图文并发的情况
await session.SendGroupMessageAsync(0, chain); // 自己填群号, 一般由 IGroupMessageEventArgs 提供
}
public static ImageMessage ToImageMessage(this IImageMessage self)
{
if (self.Url == null)
{
throw new InvalidOperationException("The url cannot be null.");
}
if (self.PreviewUrl == null)
{
throw new InvalidOperationException("The preview url cannot be null.");
}
if (self is ImageMessage imageMessage)
{
return(imageMessage);
}
return(new ImageMessage()
{
Url = self.Url,
PreviewUrl = self.PreviewUrl
});
}
internal static ImageMessage Convert(IImageMessage message)
{
if (message.Url == null)
{
throw new InvalidOperationException("The url cannot be null.");
}
if (message.PreviewUrl == null)
{
throw new InvalidOperationException("The preview url cannot be null.");
}
if (message is ImageMessage imageMessage)
{
return(imageMessage);
}
return(new ImageMessage()
{
Url = message.Url,
PreviewUrl = message.PreviewUrl
});
}
