/// <summary>
/// Updates a specified menu owned by the current user.
/// </summary>
/// <param name="menuId">The Menu ID to update, or null to update the Favorites menu.</param>
/// <param name="recipesAdd">A list of recipe IDs to add to the menu. Duplicates will be ignored.</param>
/// <param name="recipesRemove">A list of recipe IDs to remove from the menu.</param>
/// <param name="recipesMove">A list of items to move from this menu to another menu.</param>
/// <param name="clear">If true, all recipes will be removed from this menu.</param>
/// <param name="newName">An optional new name for this menu. Note, the favorites menu cannot be renamed.</param>
/// <returns></returns>
public MenuResult UpdateMenu(Guid? menuId, Guid[] recipesAdd, Guid[] recipesRemove, MenuMove[] recipesMove, bool clear, string newName = null)
{
var ret = new MenuResult();
ret.IsMenuUpdated = true; // TODO: Verify actual changes were made before setting MenuUpdated to true
Menus dbMenu = null;
if (menuId.HasValue)
{
dbMenu = store.Menus.SingleOrDefault(p => p.MenuId == menuId);
if (dbMenu == null)
throw new MenuNotFoundException();
if (dbMenu.UserId != Identity.UserId) // User does not have access to modify this menu
throw new UserDoesNotOwnMenuException();
}
var dbFavorites = store.Favorites
.Where(p => p.MenuId == menuId)
.ToList();
if (!string.IsNullOrWhiteSpace(newName) && dbMenu != null) // Rename menu
dbMenu.Title = newName.Trim();
if (recipesAdd.Any()) // Add recipes to menu
{
var existing = dbFavorites.Select(f => f.RecipeId);
recipesAdd = recipesAdd.Except(existing).ToArray(); //Remove dupes
foreach (var rid in recipesAdd)
{
var fav = new Favorites
{
FavoriteId = Guid.NewGuid(),
UserId = Identity.UserId,
RecipeId = rid,
MenuId = menuId
};
store.Favorites.Add(fav);
}
}
if (recipesRemove.Any()) // Remove recipes from menu
{
var toDelete = (from r in dbFavorites where recipesRemove.Contains(r.RecipeId) select r);
toDelete.ForEach(r => store.Favorites.Remove(r));
}
if (clear) // Remove every recipe from menu
{
store.Favorites.RemoveAll(dbFavorites.Contains);
}
if (recipesMove.Any()) // Move items to another menu
{
foreach (var moveAction in recipesMove)
{
Menus dbTarget = null;
if (moveAction.TargetMenu.HasValue)
{
dbTarget = store.Menus
.Where(p => p.UserId == Identity.UserId)
.SingleOrDefault(p => p.MenuId == moveAction.TargetMenu);
if (dbTarget == null)
throw new MenuNotFoundException(moveAction.TargetMenu.Value);
}
var rToMove = (moveAction.AllMoved
? dbFavorites
: dbFavorites.Where(r => moveAction.RecipesToMove.Contains(r.RecipeId)));
rToMove.ForEach(a => a.MenuId = dbTarget != null ? (Guid?) dbTarget.MenuId : null);
}
}
return ret;
}
/// <summary>
/// Created a new menu owned by the current user.
/// </summary>
/// <param name="menu">A menu to create.</param>
/// <param name="recipeIds">Zero or more recipes to add to the newly created menu.</param>
/// <returns>A result indicating the new menu ID.</returns>
public MenuResult CreateMenu(Menu menu, params Guid[] recipeIds)
{
menu.Title = menu.Title.Trim();
var ret = new MenuResult();
Menus dbMenu;
var dupes = store.Menus
.Where(p => p.UserId == Identity.UserId)
.Any(p => p.Title == menu.Title);
if (dupes)
{
throw new MenuAlreadyExistsException();
}
store.Menus.Add(dbMenu = new Data.DTO.Menus
{
MenuId = Guid.NewGuid(),
UserId = Identity.UserId,
Title = menu.Title,
CreatedDate = DateTime.Now,
});
foreach (var rid in recipeIds.NeverNull())
{
var fav = new Favorites
{
FavoriteId = Guid.NewGuid(),
UserId = Identity.UserId,
RecipeId = rid,
MenuId = dbMenu.MenuId
};
store.Favorites.Add(fav);
}
ret.IsMenuCreated = true;
ret.NewMenuId = dbMenu.MenuId;
return ret;
}