/// <summary>
/// Imports the data previously loaded into the database.
/// </summary>
/// <param name="importList">The IDs of the elements to import.</param>
/// <param name="progress">Reports the progress of the operation. First report is the amount of files to process, then subsequent reports represent the quantity done.</param>
public async Task ImportToDatabase(List <Guid> selection, IProgress <int> progress)
{
if (importList == null)
{
throw new InvalidOperationException("You must first call ImportPreview");
}
int i = 0;
Media item;
await Task.Run(() => {
using (Entities context = new Entities()) {
DbContextTransaction Trans = context.Database.BeginTransaction();
foreach (Guid id in selection)
{
item = importList.Single(v => v.MediaId == id);
item.IsPersonal = true;
SyncAccess.InsertOrMerge(item, context);
if (progress != null)
{
progress.Report(++i);
}
}
Trans.Commit();
}
});
}
/// <summary>
/// Exports Media items matching the specified list of IDs into specified file in XML format.
/// </summary>
/// <param name="exportList">The list of Media IDs to export.</param>
/// <param name="outputFile">The file to export to.</param>
public void ExportToFile(List <Guid> exportList, string outputFile)
{
List <SyncMedia> ExportData = (from v in SyncAccess.GetMediaListById(exportList) select new SyncMedia(v)).ToList();
string ExportXml = SerializeXml(ExportData);
File.WriteAllText(outputFile, ExportXml);
}
/// <summary>
/// Parses specified file and returns its raw data.
/// </summary>
/// <param name="inputFile">The file to parse.</param>
/// <returns>A list of Media objects.</returns>
private List <Media> ParseFile(string inputFile)
{
string ImportXml = File.ReadAllText(inputFile);
List <SyncMedia> ImportList = DeserializeXml(ImportXml);
List <MediaCategory> CacheCategories = SyncAccess.GetMediaCategories();
List <RatingCategory> CacheRatings = SyncAccess.GetRatingCategories();
List <Media> Result = (from i in ImportList select i.ConvertToMedia(CacheCategories, CacheRatings)).ToList();
return(Result);
}
