public Download_ViewModel(
INavigationService NavigationService_,
IDialogService DialogService_,
AppSetting AppSetting_,
IStore Store_,
ILocalization Loc_,
ILogger logger_) : base()
{
if (!IsInDesignMode)
{
NavigationService = NavigationService_;
DialogService = DialogService_;
AppSettings = AppSetting_;
Store = Store_;
Tx = Loc_;
logger = logger_;
CommandDispatcher = new MvxCommand<string>(CmdDispatcher);
Command_DownloadStoreItem = new MvxCommand<StoreItemExt>((x)=>CmdDispatcher_StoreItem(x,"Download"));
}
StoreItems = new SynchronizedObservableCollection<StoreItemExt>();
if (IsInDesignMode)
{
StoreItemExt item;
item = new StoreItemExt { Name = "South Park" };
item.DownloadButton.State1 = true;
StoreItems.Add(item);
item = new StoreItemExt { Name = "Chuggington" };
item.DownloadButton.State2 = true;
StoreItems.Add(item);
item = new StoreItemExt { Name = "Futurama" };
item.DownloadButton.State3 = true;
StoreItems.Add(item);
}
}
private void CmdDispatcher_StoreItem(StoreItemExt storeitem,string cmd)
{
switch (cmd)
{
case "Download":
Task.Run(new Action(()=>
{
try
{
Store.DownloadStoreItem(storeitem);
}
catch (Exception ex)
{
if (ex.IsFatal()) throw;
Dispatcher.RequestMainThreadAction(new Action(() => NavigationService.OpenDialog(Views.ExceptionForm, new ExceptionForm_parameters{ ex = ex })));
return;
}
Dispatcher.RequestMainThreadAction(new Action(() => DialogService.Message(string.Format(Tx.T("IStore.DownloadStoreItem.Messages.Success"),storeitem.Name))));
}));
break;
default:
SystemMessage.Show("Unknown command "+cmd);
break;
}
}
public void DownloadStoreItem(StoreItemExt StoreItem)
{
pb = new ProgressBar_Model {};
pb.Title = string.Format(Tx.T("IStore.DownloadStoreItem.Messages.Download"), StoreItem.Name);
App.AddLongTaskProgressBar(pb);
try
{
// download dat file
string tempDatFile = Path.Combine(FileService.GetPathToTempFolder(), "LearningItem."+ StoreItem.id.ToString()+".dat");
string DatFileUrl = WebAPI_LearningItems.GetPathToDatFile(StoreItem.id);
DownloadFile(DatFileUrl, tempDatFile);
UUID li_id = new UUID(StoreItem.id);
// install dat file
try
{
InstallLearningItem(li_id,tempDatFile,pb);
}
finally
{
FileService.DeleteFile(tempDatFile);
}
LearningItem li = EFDbContext.Context.Find<LearningItem>(li_id);
if (AppSetting.LearningItems.Any(x=>x.id == li_id))
{
li.RefreshFromDB();
}
else
{
AppSetting.LearningItems.Add(li);
}
li.AppSetting = AppSetting;
// download video file
YoutubeDownloader.Info vinf = DownloadVideo(StoreItem);
li.VideoFileName = vinf.VideoFileName;
foreach(AudioTrack at in li.AudioTracks)
{
if (vinf.isExternalAudio)
{
at.ExternalFile = vinf.AudioFileName;
at.isExternal = vinf.isExternalAudio;
}
}
if (!AppSetting.LearningItems.Contains(li)) AppSetting.LearningItems.Add(li);
EFDbContext.SaveChgs();
StoreItem.LearningItem = li;
StoreItem.UpdateDownloadButtonStatus();
}
finally
{
App.RemoveLongTaskProgressBar(pb);
}
}
YoutubeDownloader.Info DownloadVideo(StoreItemExt storeitem)
{
//bool IsCopyVideo = false;
//string VideoFilePath;
string LearningItemFolder = FileService.GetPathToLearningItem(new UUID(storeitem.id));
//string CoverURL = "";
// Is need to download video
// it does not work because video file name can be changed
/*
if (!string.IsNullOrEmpty(storeitem.VideoFileName))
{
VideoFilePath = Path.Combine(LearningItemFolder,storeitem.VideoFileName);
if (!FileService.FileExists(VideoFilePath))
{
IsCopyVideo = true;
} else
{
IsCopyVideo = storeitem.VideoFileSize != FileService.GetFileSize(VideoFilePath);
}
}
*/
// Youtube download
YoutubeDownloader.Info inf = null;
//if (IsCopyVideo)
//{
if (!string.IsNullOrEmpty(storeitem.YoutubeURL))
{
var VideoInfos = YoutubeDownloader.GetVideoInfo(storeitem.YoutubeURL);
var vi = VideoInfos.OrderByDescending(x => x.Resolution).FirstOrDefault();
if (vi != null)
{
inf = YoutubeDownloader.GetInfo(vi);
YoutubeDownloader.Download(VideoInfos, vi, LearningItemFolder,pb);
return YoutubeDownloader.GetInfo(vi);
}
}
return null;
//}
}
