public async void ProcessSticker(object state)
{
Update update = state as Update;
var commands = Bot.Commands;
var message = update.Message;
var botClient = await Bot.GetBotClientAsync();
// for stickers
if (message.Type == MessageType.Sticker)
{
var file = await botClient.GetFileAsync(message.Sticker.FileId);
var mess = string.Format("Associated emoji: {0}\nAnimeted: {1}\nPack: {2}\nConverting ...",
message.Sticker.Emoji, message.Sticker.IsAnimated, message.Sticker.SetName);
await botClient.SendTextMessageAsync(message.Chat, mess, replyToMessageId : message.MessageId);
var fileExtension = message.Sticker.IsAnimated ? ".tgs" : ".webp";
try
{
var localSavePath = $"/app/tgs-to-gif/cache/{message.Sticker.FileUniqueId + fileExtension}";
var localUploadPath = $"/app/tgs-to-gif/cache/{message.Sticker.FileUniqueId}.gif";
// Download sticker from telegram
if (!System.IO.File.Exists(localSavePath))
{
using (var saveImageStream = new FileStream(localSavePath, FileMode.Create))
{
await botClient.DownloadFileAsync(file.FilePath, saveImageStream);
}
}
// If the file exists, go directly to the upload
if (!System.IO.File.Exists(localUploadPath))
{
//Convert tgs sticker
if (message.Sticker.IsAnimated == true)
{
ExecuteCommand($"/app/tgs-to-gif/bin/tgs_to_gif {localSavePath} -o {localUploadPath}");
}
//Convert webp sticker
else
{
ConvertImageApi apiInstance = new ConvertImageApi();
var fromFormat = "WEBP";
var toFormat = "GIF";
var inputFile = new FileStream(localSavePath, FileMode.Open); // Input file to perform the operation
// Image format conversion
byte[] result = apiInstance.ConvertImageImageFormatConvert(fromFormat, toFormat, inputFile);
MemoryStream ms = new MemoryStream(result);
Bitmap bm = new Bitmap(ms);
bm.Save(localUploadPath);
}
}
// Upload sticker to telegram
using (FileStream fs = System.IO.File.OpenRead(localUploadPath))
{
InputOnlineFile inputOnlineFile = new InputOnlineFile(fs, message.Sticker.FileUniqueId + ".gif");
await botClient.SendDocumentAsync(message.Chat, inputOnlineFile);
}
}
catch (Exception e)
{
await botClient.SendTextMessageAsync(message.Chat, $"Conversion {fileExtension} error! \n " + e.Message);
}
}
}
public void Init()
{
instance = new ConvertImageApi();
}
