private async Task <MessageContentResponse> InternalGetMessageContent(ReceivedContent content, bool isPreview)
{
string url;
if (isPreview)
{
url = Api.Preview.Replace("<messageId>", content.Id);
}
else
{
url = Api.Content.Replace("<messageId>", content.Id);
}
var res = await _httpClient.GetAsync(url);
if (res.StatusCode != HttpStatusCode.OK)
{
return(await Task.FromResult <MessageContentResponse>(null));
}
var stream = await res.Content.ReadAsStreamAsync();
var disposition = res.Content.Headers.GetValues("Content-Disposition").First();
var filename = new ContentDisposition(disposition).FileName;
var result = new MessageContentResponse
{
Content = stream,
FileName = filename
};
return(result);
}
public ReceivedContent Content()
{
var result = new ReceivedContent
{
Parent = this,
Id = RawContent.Id,
From = RawContent.From,
CreatedTime = RawContent.CreatedTime,
To = RawContent.To,
ToType = RawContent.ToType,
IsOperation = EventType == LineBot.EventType.ReceivingOperation,
IsMessage = EventType == LineBot.EventType.ReceivingMessage,
OpType = RawContent.OpType,
ContentType = RawContent.ContentType
};
return(result);
}
public Task <MessageContentResponse> GetMessageContentPreview(ReceivedContent content)
{
return(InternalGetMessageContent(content, true));
}
public Task <MessageContentResponse> GetMessageContent(ReceivedContent content)
{
return(InternalGetMessageContent(content, false));
}
