public async Task <HttpResponseMessage> Post()
{
var content = await Request.Content.ReadAsStringAsync();
var signature = Request.Headers.GetValues("X-Line-Signature").FirstOrDefault();
if (signature == null || !Client.ValidateSignature(content, signature))
{
return(Request.CreateErrorResponse(HttpStatusCode.NotFound, "not found"));
}
var events = Client.ParseEvent(content);
foreach (var ev in events)
{
switch (ev.Type)
{
case EventType.Message:
var mev = (MessageEvent)ev;
switch (mev.Message.Type)
{
case MessageType.Text:
{
var message = (TextEventMessage)mev.Message;
await Client.ReplyTextAsync(mev.ReplyToken, message.Text);
break;
}
case MessageType.Image:
{
var message = (ImageEventMessage)mev.Message;
var image = await Client.GetContentAsync(message.Id);
var key = AddToCache(image);
await Client.ReplyMessageAsync(mev.ReplyToken, new ImageMessage
{
OriginalContentUrl = GetContentUrl(key),
PreviewImageUrl = GetContentUrl(key),
});
break;
}
case MessageType.Video:
{
var message = (VideoEventMessage)mev.Message;
var video = await Client.GetContentAsync(message.Id);
var key = AddToCache(video);
var thumb = MakeThumbnail(video);
var thumbkey = AddToCache(thumb);
await Client.ReplyMessageAsync(mev.ReplyToken, new VideoMessage
{
OriginalContentUrl = GetContentUrl(key),
PreviewImageUrl = GetContentUrl(thumbkey),
});
break;
}
case MessageType.Audio:
{
var message = (AudioEventMessage)mev.Message;
var audio = await Client.GetContentAsync(message.Id);
var key = AddToCache(audio);
await Client.ReplyMessageAsync(mev.ReplyToken, new AudioMessage
{
OriginalContentUrl = GetContentUrl(key),
Duration = 0.5,
});
break;
}
case MessageType.Location:
{
var message = (LocationEventMessage)mev.Message;
await Client.ReplyMessageAsync(mev.ReplyToken, new LocationMessage
{
Address = message.Address,
Title = message.Title,
Latitude = message.Latitude,
Longitude = message.Longitude,
});
break;
}
case MessageType.Sticker:
{
var message = (StickerEventMessage)mev.Message;
await Client.ReplyMessageAsync(mev.ReplyToken, new StickerMessage
{
PackageId = message.PackageId,
StickerId = message.StickerId,
});
break;
}
}
break;
}
}
return(Request.CreateResponse(HttpStatusCode.OK, "OK"));
}