/// <summary>
/// Go through all database records along with all book files in the library root folder and remove any database entries which point to non-existing files,
/// then attempt to generate database entries for all book files, which don't have them.
/// </summary>
public static void SyncDbWithFileTree()
{
MainWindow.Busy(true);
Task.Factory.StartNew(() =>
{
GenerateFileTree();
Tools.RemoveEmptyDirectories(Properties.Settings.Default.BooksDir);
var fileTree = GetFileTree();
const string sql = "SELECT Path FROM books";
const string sqlDelete = "DELETE FROM books WHERE Path = @Path";
var query = Db.Query(sql);
var pathList = new List <string>();
MainWindow.Busy(UiLang.Get("BusyCleaningDb"));
//Delete rows pointing to non-existing files
while (query.Read())
{
if (File.Exists(BookKeeper.GetAbsoluteBookFilePath(query["Path"].ToString())))
{
pathList.Add(query["Path"].ToString());
}
else
{
Db.NonQuery(sqlDelete, new[] { new SQLiteParameter("Path", query["Path"].ToString()) });
}
}
MainWindow.BusyMax(fileTree.Count(bookFile => !pathList.Contains(BookKeeper.GetRelativeBookFilePath(bookFile))));
var i = 0;
//Generate rows for any books missing them
foreach (
var bookFile in
fileTree.Where(bookFile => !pathList.Contains(BookKeeper.GetRelativeBookFilePath(bookFile))))
{
MainWindow.Busy(BookKeeper.GetRelativeBookFilePath(bookFile));
MainWindow.Busy(i++);
try
{
BookKeeper.GetData(bookFile);
}
catch (Exception e)
{
DebugConsole.WriteLine(
"Library structure: I found a book file without any entry in the database (" + bookFile +
"), but an error occurred during attempted adding: " + e);
}
}
MainWindow.MW.Dispatcher.Invoke(() => MainWindow.MW.BookGridReload());
MainWindow.Busy(false);
});
}
/// <summary>
/// Generate a list of BookData objects, where each of them contains information about a book
/// </summary>
public static List <BookData> List()
{
var bookData = new List <BookData>();
const string sql = "SELECT * FROM books";
var query = Db.Query(sql);
while (query.Read())
{
if (!File.Exists(BookKeeper.GetAbsoluteBookFilePath(query["Path"].ToString())))
{
continue;
}
bookData.Add(BookKeeper.CastSqlBookRowToBookData(query));
}
query.Dispose();
return(bookData);
}
/// <summary>
/// Take all books files marked for sync and copy them onto the reader device, if one is found.
/// If any book files are found on the reader device, which are not marked for sync in the local library, they will be deleted from the device.
/// </summary>
private static void SyncBookFiles()
{
var localBookList = LibraryStructure.List();
var localBookListForSync = (from bookData in localBookList where bookData.Sync select BookKeeper.GetAbsoluteBookFilePath(bookData.Path)).ToList();
var bookList = GetFileList();
if (bookList == null) //The reader is not connected, or the specified storage folder on it doesn't exist, no point to continue
{
MainWindow.Busy(false);
return;
}
var filesToDelete = (from file in bookList
let fileName = Path.GetFileName(file)
where !localBookListForSync.Select(Path.GetFileName).Contains(fileName)
select file).ToArray();
var filesToCopy = localBookListForSync.Where(
file => File.Exists(file) && !bookList.Select(Path.GetFileName).Contains(Path.GetFileName(file))).ToArray();
MainWindow.BusyMax(filesToDelete.Length + filesToCopy.Length);
var busyCount = 0;
foreach (var file in filesToDelete)
//Delete files from the reader which don't exist in the local Sync list
{
MainWindow.Busy(busyCount++);
MainWindow.Busy(file);
try
{
File.SetAttributes(file, FileAttributes.Normal);
File.Delete(file);
}
catch (Exception e)
{
DebugConsole.WriteLine("Usb sync: Failed to delete " + file + ": " + e);
}
}
foreach (var file in filesToCopy)
//Copy files (which don't exist in the reader) into the reader, from the local Sync list
{
DebugConsole.WriteLine("Copying " + file);
MainWindow.Busy(busyCount++);
MainWindow.Busy(file);
try
{
if (file != null)
{
File.Copy(file, Path.Combine(_deviceDir, Path.GetFileName(file)));
}
}
catch (Exception e)
{
MainWindow.Info(String.Format(UiLang.Get("SyncFileCopyFailed"), file));
DebugConsole.WriteLine("Usb sync: Error while copying " + file + ": " + e);
}
}
MainWindow.Info(UiLang.Get("SyncFinished"));
MainWindow.Busy(false);
}
