public async Task CheckValidityAsync(IStringLocalizer localizer, MemCheckDbContext dbContext)
{
CardInputValidator.Run(this, localizer);
var cards = dbContext.Cards
.Include(card => card.CardLanguage)
.Include(card => card.Images)
.Include(card => card.TagsInCards)
.ThenInclude(tag => tag.Tag)
.Include(card => card.UsersWithView)
.AsSingleQuery()
.Where(card => card.Id == CardId);
if (!await cards.AnyAsync())
{
throw new RequestInputException("Unknown card id");
}
var card = cards.Single();
var dataBeforeUpdate = new
{
CardLanguageId = card.CardLanguage.Id,
card.FrontSide,
card.BackSide,
card.AdditionalInfo,
TagIds = card.TagsInCards.Select(tag => tag.TagId),
UserWithVisibilityIds = card.UsersWithView.Select(u => u.UserId),
card.Images
};
if ((dataBeforeUpdate.CardLanguageId == LanguageId) &&
(dataBeforeUpdate.FrontSide == FrontSide) &&
(dataBeforeUpdate.BackSide == BackSide) &&
(dataBeforeUpdate.AdditionalInfo == AdditionalInfo) &&
Enumerable.SequenceEqual(dataBeforeUpdate.TagIds.OrderBy(tagId => tagId), Tags.OrderBy(tagId => tagId)) &&
Enumerable.SequenceEqual(dataBeforeUpdate.UserWithVisibilityIds.OrderBy(userId => userId), UsersWithVisibility.OrderBy(userId => userId)) &&
SameImageLists(dataBeforeUpdate.Images))
{
throw new RequestInputException(localizer["CanNotUpdateMetadataBecauseSameAsOriginal"].Value);
}
//to do: reducing UsersWithView must check that this will not break anybody's deck, nor prevent an author of a version of this card from viewing it
}
private void CheckAtLeastOneFieldDifferent(Card card, ILocalized localizer)
{
var dataBeforeUpdate = new
{
CardLanguageId = card.CardLanguage.Id,
card.FrontSide,
card.BackSide,
card.AdditionalInfo,
TagIds = card.TagsInCards.Select(tag => tag.TagId),
UserWithVisibilityIds = card.UsersWithView.Select(u => u.UserId),
card.Images
};
if ((dataBeforeUpdate.CardLanguageId == LanguageId) &&
(dataBeforeUpdate.FrontSide == FrontSide) &&
(dataBeforeUpdate.BackSide == BackSide) &&
(dataBeforeUpdate.AdditionalInfo == AdditionalInfo) &&
Enumerable.SequenceEqual(dataBeforeUpdate.TagIds.OrderBy(tagId => tagId), Tags.OrderBy(tagId => tagId)) &&
Enumerable.SequenceEqual(dataBeforeUpdate.UserWithVisibilityIds.OrderBy(userId => userId), UsersWithVisibility.OrderBy(userId => userId)) &&
SameImageLists(dataBeforeUpdate.Images))
{
throw new RequestInputException(localizer.Get("CanNotUpdateBecauseNoDifference"));
}
}