/// <summary>
/// 构建附件消息
/// </summary>
/// <param name="attachmentInfo">附件信息</param>
/// <param name="text">消息</param>
/// <returns>聊天消息</returns>
public static ChatMessage BuildAttachmentMessage(UploadedAttachmentInfo attachmentInfo, string text = " ")
{
var message = new ChatMessage();
message.Text = text;
message.Ent = new List <EntMessage>();
message.Fmt = new List <FmtMessage>();
//设置附件信息
message.Ent.Add(new EntMessage()
{
Tp = "EX",
Data = new EntData()
{
Mime = attachmentInfo.Mime,
Name = attachmentInfo.FileName,
Ref = attachmentInfo.RelativeUrl,
Size = int.Parse(attachmentInfo.Size.ToString()),
}
});
//设置附件说明消息范围
message.Fmt.Add(new FmtMessage()
{
At = text.Length,
Len = 1,
Key = 0,
});
//格式转换
if (text.Contains("\n"))
{
for (int i = 0; i < text.Length; i++)
{
if (text[i] == '\n')
{
FmtMessage fmt = new FmtMessage()
{
At = i, Tp = "BR", Len = 1
};
message.Fmt.Add(fmt);
}
}
}
return(message);
}
/// <summary>
/// append a attachment file to chat message
/// </summary>
/// <param name="attachmentInfo">attachment file information, you can get it with ChatBot.Upload(...)</param>
public void AppendAttachment(UploadedAttachmentInfo attachmentInfo)
{
Message.Fmt.Add(new FmtMessage()
{
At = Message.Text.Length,
Key = Message.Ent.Count,
Len = 1,
});
Message.Ent.Add(new EntMessage()
{
Tp = "EX",
Data = new EntData()
{
Mime = attachmentInfo.Mime,
Name = attachmentInfo.FileName,
Ref = attachmentInfo.RelativeUrl,
Size = int.Parse(attachmentInfo.Size.ToString()),
},
});
}
/// <summary>
/// upload large file as attachment
/// </summary>
/// <param name="fileName">the file will be uploaded</param>
/// <param name="redirectUrl">if upload operation should temp changed</param>
/// <returns>uploaded information for send message to user or group</returns>
public async Task <UploadedAttachmentInfo> Upload(string fileName, string redirectUrl = "")
{
if (string.IsNullOrEmpty(token))
{
//not login or login failed, disable upload
Log("Upload Attachment Error", $"Not login, upload operation disabled...");
return(null);
}
if (string.IsNullOrEmpty(fileName) || !File.Exists(fileName))
{
Log("Upload Attachment Error", $"can not find file:{fileName}");
return(null);
}
try
{
var fullFileName = Path.GetFullPath(fileName);
var fileInfo = new FileInfo(fullFileName);
UploadedAttachmentInfo attachmentInfo = new UploadedAttachmentInfo();
attachmentInfo.FullFileName = fullFileName;
attachmentInfo.FileName = fileInfo.Name;
attachmentInfo.Size = fileInfo.Length;
attachmentInfo.Mime = $"file/{fileInfo.Extension}";
var restClient = new RestClient(apiBaseUrl);
RestRequest request;
if (string.IsNullOrEmpty(redirectUrl))
{
request = new RestRequest(UploadEndpoint, Method.Put);
}
else
{
request = new RestRequest(redirectUrl, Method.Put);
}
request.AddHeader("X-Tinode-APIKey", apiKey);
request.AddHeader("X-Tinode-Auth", $"Token {token}");
request.AddBody("id", GetNextTid());
request.AddFile("file", fullFileName);
var cancellationTokenSource = new CancellationTokenSource();
var response = await restClient.ExecuteAsync(request, cancellationTokenSource.Token);
if (response.StatusCode >= HttpStatusCode.OK && response.StatusCode < HttpStatusCode.BadRequest)
{
if (response.StatusCode == HttpStatusCode.OK)
{
var obj = JsonConvert.DeserializeObject <JToken>(response.Content);
var code = obj["ctrl"]["code"].ToString();
var url = obj["ctrl"]["params"]["url"].ToString();
attachmentInfo.RelativeUrl = url;
Log("Upload Attachment Success", $"Upload file success, File={fullFileName}, RefUrl={url}");
return(attachmentInfo);
}
else if (response.StatusCode == HttpStatusCode.TemporaryRedirect)
{
var tmpRedirectUrl = string.Empty;
//307,should reupload to the redirect url
foreach (var h in response.Headers)
{
//查找重定向地址
if (h.Name.ToLower() == "location")
{
tmpRedirectUrl = h.Value.ToString();
break;
}
}
Log("Upload Attachment Redirect", $"redirect upload...");
return(await Upload(fileName, redirectUrl));
}
else
{
Log("Upload Attachment Error", $"Upload failed, Http Code={response.StatusCode}");
return(null);
}
}
else
{
//Failed
Log("Upload Attachment Error", $"Upload failed, Http Code={response.StatusCode}");
return(null);
}
}
catch (Exception e)
{
//exception occurs
Log("Upload Attachment Exception", $"Upload failed, Exception={e.Message}");
return(null);
}
}
