public async Task <Unit> Handle(DescribeStickerCommand request, CancellationToken ct)
{
var author = await dbContext.Users.FindOrThrow(request.UserId, ct);
var sticker = await dbContext.Stickers.FindOrThrow(request.StickerId, ct);
var descriptions = ExtractDescriptions(request.Description.ToLower()).ToList();
if (descriptions.IsEmpty())
{
throw new ValidationException("Descriptions are empty");
}
foreach (var description in descriptions)
{
if (string.IsNullOrWhiteSpace(description))
{
continue;
}
if (await DescriptionExists(author, sticker, description))
{
continue;
}
var stickerDescription = new StickerDescription(author, sticker, description);
await dbContext.StickerDescriptions.AddAsync(stickerDescription, ct);
}
await dbContext.SaveChangesAsync(ct);
return(Unit.Value);
}
public async Task <Unit> Handle(RemoveStickerDescriptionCommand command, CancellationToken ct)
{
var description = await context.StickerDescriptions.FindOrThrow(command.DescriptionId, ct);
context.StickerDescriptions.Remove(description);
await context.SaveChangesAsync(ct);
return(Unit.Value);
}
public async Task <Unit> Handle(EnsureUserIsRegisteredCommand request, CancellationToken ct)
{
var user = await dbContext.Users.FindAsync(request.Id);
if (user is null)
{
user = new User(request.Id);
dbContext.Users.Add(user);
await dbContext.SaveChangesAsync(ct);
}
return(Unit.Value);
}
public async Task <Unit> Handle(EnsureStickerIsRegisteredCommand request, CancellationToken ct)
{
var sticker = await dbContext.Stickers.FindAsync(request.StickerId);
if (sticker is null)
{
sticker = new Sticker(request.StickerId, request.StickerFileId);
dbContext.Stickers.Add(sticker);
await dbContext.SaveChangesAsync(ct);
}
return(Unit.Value);
}