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Added SecretChats.DownloadFile and media.MimeType to simplify download & decryption

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Wizou 2022-10-20 23:12:43 +02:00
parent 82d852e071
commit b9587e3997
8 changed files with 74 additions and 30 deletions
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9
Examples/Program_SecretChats.cs
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@ -91,10 +91,11 @@ Type a command, or a message to send to the active secret chat:");
{
if (msg.Media != null && unem.message is EncryptedMessage { file: EncryptedFile ef })
{
Console.WriteLine($"{unem.message.ChatId}> {msg.Message} [file being downloaded to media.jpg]");
using var output = File.Create("media.jpg"); // not necessarily a JPG, check the msg.Media mime_type
using var decryptStream = new WTelegram.AES_IGE_Stream(output, msg.Media);
await Client.DownloadFileAsync(ef, decryptStream, ef.dc_id, ef.size);
int slash = msg.Media.MimeType?.IndexOf('/') ?? 0; // quick & dirty conversion from MIME type to file extension
var filename = slash > 0 ? $"media.{msg.Media.MimeType[(slash + 1)..]}" : "media.bin";
Console.WriteLine($"{unem.message.ChatId}> {msg.Message} [attached file downloaded to {filename}]");
using var output = File.Create(filename);
await Secrets.DownloadFile(ef, msg.Media, output);
}
else if (msg.Action == null) Console.WriteLine($"{unem.message.ChatId}> {msg.Message}");
else Console.WriteLine($"{unem.message.ChatId}> Service Message {msg.Action.GetType().Name[22..]}");