private async Task loadData(string searchTitle, string searchUser, int?page)
{
if (string.IsNullOrEmpty(searchTitle) && string.IsNullOrEmpty(searchUser))
{
return;
}
pM.searchAlbum = searchTitle;
pM.searchUser = searchUser;
//
// Going to use some maps to store the album and user data
//
List <AlbumModel> albumList;
List <UserModel> userList;
_logger.LogInformation("Loading User List");
userList = await _aS.getUsers();
foreach (var u in userList)
{
_logger.LogInformation("Adding User " + u.email);
pM.addUser(u);
}
_logger.LogInformation("Loading Album List");
albumList = await _aS.getAlbums();
foreach (var a in albumList)
{
a.user = pM.getUser(a.userId);
if (!string.IsNullOrEmpty(searchTitle))
{
if (a.title.Contains(searchTitle))
{
_logger.LogInformation("Adding Album " + a.title);
pM.addAlbum(a);
}
}
else if (!string.IsNullOrEmpty(searchUser))
{
if (a.user.name.Contains(searchUser))
{
_logger.LogInformation("Adding Album " + a.title);
pM.addAlbum(a);
}
}
}
//
// Rather than making (n) separate calls to get the first photo of each album we are going to cache them all. In a real world scenario, I would change the backend data source lookups to allow for a pull of the first photo with the album lookup
// For now, we are goign to check the album count. If there were more than 5 albums we will load all of the photos to save on round trips. Otherwise, we will make the separate calls to load photos for the specified albums
// need to be careful with separate as the backend end throttles successive calls
//
_logger.LogInformation("Loading Photo List");
if (pM.albumMap.Count < ALBUM_CACHE_CUTOFF)
{
//
// Loading photos via individual calls
//
foreach (KeyValuePair <int, AlbumModel> entry in pM.albumMap)
{
List <PhotoModel> _photoList = await _aS.getPhotos(entry.Value.id);
foreach (var p in _photoList)
{
entry.Value.addPhoto(p);
}
}
}
else
{
//
// Loading all photos at once to reduce round-trip calls
//
List <PhotoModel> _photoList = await _aS.getPhotos();
foreach (var p in _photoList)
{
AlbumModel a = pM.getAlbum(p.albumId);
if (a != null)
{
a.addPhoto(p);
}
}
}
pM.setPage(page ?? 1);
_logger.LogInformation(pM.albumList.ToString());
}