public static async Task <int[]> CreateLevels(this InWordsDataContext context, int gameId, int userId, IList <int[]> pairsInLevels)
{
if (context == null)
{
throw new ArgumentNullException(nameof(context));
}
if (pairsInLevels == null)
{
pairsInLevels = Array.Empty <int[]>();
}
// create levles
var levels = pairsInLevels.Select(d =>
{
var game = new GameLevel()
{
GameId = gameId
};
game.Historylevel = new Historylevel()
{
DateTime = DateTime.UtcNow,
WordsCount = d.Distinct().Count(),
GameLevel = game
};
context.Add(game);
return(game);
}).ToArray();
await context.SaveChangesAsync().ConfigureAwait(false);
// fill levels with words
for (int i = 0; i < pairsInLevels.Count; i++)
{
var currentLevel = levels[i];
int[] currentWordsIds = pairsInLevels[i].ToArray();
var currentWords = context.CurrentUserWordPairs(userId)
.Where(u => currentWordsIds.Contains(u.UserWordPairId))
.ToArray();
var gameLevelWords = currentWords.Select(w => new GameLevelWord()
{
ForeignWord = w.ForeignWord,
NativeWord = w.NativeWord,
GameLevelId = currentLevel.GameLevelId,
}).ToArray();
context.GameLevelWords.AddRange(gameLevelWords);
}
await context.SaveChangesAsync().ConfigureAwait(false);
return(levels.Select(level => level.GameLevelId).ToArray());
}