public async Task FetchFullDownloadableDataIntoDatabase(
string exhibitId, int idForRestApi, CancellationToken token, IProgressListener listener)
{
double totalSteps = await FetchNeededMediaForFullExhibit(idForRestApi);
if (token.IsCancellationRequested)
{
return;
}
listener.SetMaxProgress(totalSteps);
// We need to attach all images since the quiz download may download existing images
var itemsToTrack = DbManager
.DataAccess
.GetItems <Image>()
.Where(image => image.Id != BackupData.BackupImage.Id && image.Id != BackupData.BackupImageTag.Id);
await mediaDataFetcher.FetchMedias(requiredMedia, token, listener);
var quizzes = await DownloadQuizes(idForRestApi, token);
var mediaToFilePath = await mediaDataFetcher.WriteMediaToDiskAsync();
DbManager.InTransaction(itemsToTrack, transaction =>
{
ProcessPages(exhibitId, token, transaction.DataAccess, mediaToFilePath);
transaction.DataAccess.Quizzes().Add(quizzes);
if (token.IsCancellationRequested)
{
transaction.Rollback();
}
});
}
public async Task FetchFullDownloadableDataIntoDatabase(
string routeId, int idForRestApi, CancellationToken token, IProgressListener listener)
{
routeDto = (await routesApiAccess.GetRoutes(new List <int> {
idForRestApi
})).Items.First();
if (token.IsCancellationRequested)
{
return;
}
route = DbManager.DataAccess.Routes().GetRoute(routeId);
pagesAndMediaForMissingExhibits = new List <ExhibitPagesAndMediaContainer>();
var allMissingExhibits = DbManager.DataAccess.Exhibits().GetExhibits().ToList().FindAll(x => !x.DetailsDataLoaded); // Exhibits not fully loaded yet
missingExhibitsForRoute = allMissingExhibits.ToList().FindAll(x => routeDto.Exhibits.Contains(x.IdForRestApi)); // Select those part of the route
double totalSteps = FetchNeededMediaForFullRoute();
foreach (var exhibit in missingExhibitsForRoute) // Fetch media for missing exhibits and save them for later download
{
var pagesAndRequiredMediaForExhibit = await fullExhibitDataFetcher.FetchPagesAndMediaForExhibitFromRouteFetcher(exhibit.IdForRestApi);
if (token.IsCancellationRequested)
{
return;
}
pagesAndMediaForMissingExhibits.Add(pagesAndRequiredMediaForExhibit);
totalSteps += pagesAndRequiredMediaForExhibit.RequiredMedia.Count;
}
listener.SetMaxProgress(totalSteps);
await AddFullExhibitsToRoute(route, token, listener); // Download all missing exhibits
if (token.IsCancellationRequested)
{
return;
}
await FetchMediaData(token, listener);
var mediaToFilePath = await mediaDataFetcher.WriteMediaToDiskAsync();
DbManager.InTransaction(transaction =>
{
var dataAccess = transaction.DataAccess;
ProcessRoute(token, dataAccess, mediaToFilePath); // Download audio
if (token.IsCancellationRequested)
{
transaction.Rollback();
}
});
}
public async Task FetchBaseDataIntoDatabase(CancellationToken token, IProgressListener listener)
{
var routes = DbManager.DataAccess.Routes().GetRoutes().ToDictionary(x => x.IdForRestApi, x => x.Timestamp);
var exhibits = DbManager.DataAccess.Exhibits().GetExhibits().ToDictionary(x => x.IdForRestApi, x => x.Timestamp);
var totalSteps = await exhibitsBaseDataFetcher.FetchNeededDataForExhibits(exhibits);
if (token.IsCancellationRequested)
{
return;
}
totalSteps += await routesBaseDataFetcher.FetchNeededDataForRoutes(routes);
if (token.IsCancellationRequested)
{
return;
}
listener.SetMaxProgress(totalSteps);
await exhibitsBaseDataFetcher.FetchMediaData(token, listener);
if (token.IsCancellationRequested)
{
return;
}
await routesBaseDataFetcher.FetchMediaData(token, listener);
if (token.IsCancellationRequested)
{
return;
}
var exhibitsMediaToFilePath = await exhibitsBaseDataFetcher.WriteMediaToDiskAsync();
var routesMediaToFilePath = await routesBaseDataFetcher.WriteMediaToDiskAsync();
var cancelled = DbManager.InTransaction(transaction =>
{
exhibitsBaseDataFetcher.ProcessExhibits(listener, transaction.DataAccess, exhibitsMediaToFilePath);
if (token.IsCancellationRequested)
{
transaction.Rollback();
return(true);
}
routesBaseDataFetcher.ProcessRoutes(listener, transaction.DataAccess, routesMediaToFilePath);
if (token.IsCancellationRequested)
{
transaction.Rollback();
return(true);
}
return(false);
});
if (!cancelled)
{
await dataToRemoveFetcher.FetchDataToDelete(token);
DbManager.InTransaction(transaction => dataToRemoveFetcher.CleanupRemovedData(transaction.DataAccess));
await dataToRemoveFetcher.PruneMediaFilesAsync(DbManager.DataAccess);
}
}
