public void MoveLater(string id)
{
var oldItemOldName = GetFileNameFromId(id);
var oldItemIndex = oldItemOldName.Index;
var newItemIndex = oldItemIndex - 1;
var oldItemNewName = new NewsItemFileName(id, newItemIndex);
var newItemOldName = GetFileNameFromIndex(newItemIndex);
var newItemNewName = new NewsItemFileName(newItemOldName.Id, oldItemIndex);
var tempFileName = Path.GetTempFileName();
var newItemOldInfo = GetFileInfo(newItemOldName);
var oldFileOldInfo = GetFileInfo(oldItemOldName);
var tempFileInfo = new FileInfo(tempFileName);
tempFileInfo.Delete();
newItemOldInfo.MoveTo(tempFileName);
oldFileOldInfo.MoveTo(GetFileInfo(oldItemNewName).FullName);
tempFileInfo.MoveTo(GetFileInfo(newItemNewName).FullName);
}
private string GetFullFileName(NewsItemFileName fileName)
{
return Path.Combine(_newsDirectory.FullName, Path.ChangeExtension(fileName.FileName, NewsItemExtension));
}
private NewsItem GetItemByFileName(NewsItemFileName fileName)
{
var fullFileName = GetFullFileName(fileName);
var lines = File.ReadAllLines(fullFileName);
return new NewsItem
{
Id = fileName.Id,
Title = lines[0],
ReleaseDate = DateTime.ParseExact(lines[1], ReleaseDateFormat, CultureInfo.InvariantCulture),
Content = lines.Skip(2).Aggregate((x, y) => x + y)
};
}
private FileInfo GetFileInfo(NewsItemFileName fileName)
{
return new FileInfo(GetFullFileName(fileName));
}