/// <summary>
/// Send a direct message to a user by userId, from the current user (using Options).
/// </summary>
/// <param name="userId">The Twitter User Id to send the message to.</param>
/// <param name="messageText">The Text of the message, should be less than 10,000 chars.</param>
/// <param name="quickReplies"></param>
/// <returns></returns>
public async Task <Result <DirectMessageResult> > SendAsync(long userId, string messageText, IList <string> quickReplies = null)
{
if (string.IsNullOrEmpty(messageText))
{
throw new TwitterException("You can't send an empty message.");
}
if (messageText.Length > 10000)
{
throw new TwitterException(
"Invalid message, the length of the message should be less than 10000 chars.");
}
if (userId == default(long))
{
throw new TwitterException("Invalid userId.");
}
var resourceUrl = $"https://api.twitter.com/1.1/direct_messages/events/new.json";
var newDmEvent = new NewDirectMessageObject
{
Event = new Event
{
EventType = "message_create",
MessageCreate = new NewEvent_MessageCreate
{
MessageData = new NewEvent_MessageData {
Text = messageText
},
target = new Target {
recipient_id = userId.ToString()
}
}
}
};
if (quickReplies != null && quickReplies.Any())
{
newDmEvent.Event.MessageCreate.MessageData.QuickReply = new NewEvent_QuickReply
{
Options = quickReplies.Select(x => new NewEvent_QuickReplyOption {
Label = x
}).ToList()
};
}
var jsonObj = JsonConvert.SerializeObject(newDmEvent);
HttpResponseMessage response;
using (var client = new HttpClient())
{
client.DefaultRequestHeaders.Add("Authorization",
AuthHeaderBuilder.Build(Options, HttpMethod.Post, resourceUrl));
response = await client.PostAsync(resourceUrl,
new StringContent(jsonObj, Encoding.UTF8, "application/json"));
}
if (response.StatusCode == HttpStatusCode.OK)
{
var msgCreateJson = await response.Content.ReadAsStringAsync();
var mCreateObj = JsonConvert.DeserializeObject <NewDmResult>(msgCreateJson);
return(new Result <DirectMessageResult>(mCreateObj.@event));
}
var jsonResponse = await response.Content.ReadAsStringAsync();
if (!string.IsNullOrEmpty(jsonResponse))
{
var err = JsonConvert.DeserializeObject <TwitterError>(jsonResponse);
return(new Result <DirectMessageResult>(err));
}
return(new Result <DirectMessageResult>());
}
