/// <summary>
/// Get all modules information of specified course from database.
/// </summary>
/// <returns>List of modules information of specified course.</returns>
public List <Module> GetModulesFromDb(string courseName)
{
List <Module> list = new List <Module>();
var cmd = _databaseConnection.CreateCommand();
cmd.CommandText = @"SELECT Id, Name, Title, AuthorHandle, ModuleIndex
FROM Module
WHERE CourseName = @courseName";
cmd.Parameters.Add(new SQLiteParameter("@courseName", courseName));
var reader = cmd.ExecuteReader();
while (reader.Read())
{
Module module = new Module
{
Id = reader.GetInt32(reader.GetOrdinal("Id")),
AuthorHandle = reader.GetString(reader.GetOrdinal("AuthorHandle")),
Name = reader.GetString(reader.GetOrdinal("Name")),
Title = ReplaceInvalidFileNameChars(reader.GetString(reader.GetOrdinal("Title"))),
Index = reader.GetInt32(reader.GetOrdinal("ModuleIndex"))
};
module.Clips = GetClipsFromDb(module.Id, ModuleHash(module.Name, module.AuthorHandle), courseName);
list.Add(module);
}
reader.Close();
return(list);
}
public void DecryptAllVideos(string folderPath, Module module, string outputPath, bool hasTranscript)
{
try
{
// Get all clips of this module from database
List <Clip> listClips = module.Clips;
if (listClips.Count > 0)
{
foreach (Clip clip in listClips)
{
// Get current path of the encrypted video
string currentPath = Path.Combine(folderPath, $"{clip.Name}.psv");
if (File.Exists(currentPath))
{
// Create new path with output folder
string newPath = Path.Combine(outputPath, $"{clip.Index + 1:00}. {clip.Title}.mp4");
// Init video and get it from iStream
var playingFileStream = new VirtualFileStream(currentPath);
playingFileStream.Clone(out IStream iStream);
string fileName = Path.GetFileName(currentPath);
bgwDecrypt.ReportProgress(1,
new Log {
Text = $"Decrypting \"{fileName}\"...", TextColor = Color.Yellow
});
DecryptVideo(iStream, newPath);
if (createSubCheckBox.Checked && hasTranscript)
{
// Generate transcript file if user ask
WriteTranscriptFile(clip, newPath);
}
bgwDecrypt.ReportProgress(1,
new Log
{
Text = $"\"{Path.GetFileName(newPath)}\" decrypt success.\n",
TextColor = Color.Green
});
playingFileStream.Dispose();
}
else
{
bgwDecrypt.ReportProgress(1,
new Log
{
Text = $"File \"{Path.GetFileName(currentPath)}\" cannot be found\n",
TextColor = Color.Gray,
});
}
}
}
}
catch (Exception ex)
{
Logger.Error(ex);
}
}