/// <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);
});
}
//Change value in existing .dat file for a book
private static void BookInfoSet(string key, object value, string bookFile)
{
try
{
var bookData = BookKeeper.GetData(bookFile);
if ((typeof(BookData)).GetField("Sync") == null)
{
return;
}
typeof(BookData).GetField(key).SetValue(bookData, value);
BookKeeper.SaveData(bookData);
}
catch (Exception e)
{
DebugConsole.WriteLine("Edit book: It was not possible to save the provided book data: " + e.Message);
}
}
/// <summary>
/// Fetch data to fill the form fields, from the BookInfo object based on the key
/// </summary>
/// <param name="key">Name of the BookData field from which to get the data</param>
/// <returns>Value from the BookData field specified by the given key</returns>
private object BookInfoGet(string key)
{
if (_bookData == null) //Singleton, so we don't have to reopen the DB with saved info, after every form field loads and its load event handler calls BookInfoGet
{
try
{
_bookData = BookKeeper.GetData(_bookFile);
}
catch (Exception)
{
MainWindow.Info(UiLang.Get("BookInfoNotAvailable"), 1);
IsEnabled = false;
Close();
_bookData = new BookData();
return(null);
}
}
return(typeof(BookData).GetField(key) != null ? typeof(BookData).GetField(key).GetValue(_bookData) : null);
}
