56 lines
1.8 KiB
C#
56 lines
1.8 KiB
C#
using ErrorOr;
|
|
using Mediator;
|
|
using Microsoft.EntityFrameworkCore;
|
|
using Microsoft.Extensions.Logging;
|
|
using Musify.Application.Contracts;
|
|
using Musify.Domain.Entities;
|
|
|
|
namespace Musify.Application.Likes;
|
|
|
|
public record ToggleTrackLikeCommand(long UserId, Guid TrackId)
|
|
: ICommand<ErrorOr<bool>>;
|
|
|
|
public class ToggleTrackLikeCommandHandler(
|
|
IDatabase database,
|
|
ILogger<ToggleTrackLikeCommandHandler> logger)
|
|
: ICommandHandler<ToggleTrackLikeCommand, ErrorOr<bool>>
|
|
{
|
|
public async ValueTask<ErrorOr<bool>> Handle(ToggleTrackLikeCommand request, CancellationToken cancellationToken)
|
|
{
|
|
var trackExists = await database.Tracks
|
|
.AsNoTracking()
|
|
.AnyAsync(t => t.Id == request.TrackId, cancellationToken);
|
|
if (!trackExists)
|
|
{
|
|
logger.LogInformation("Track {TrackId} not found", request.TrackId);
|
|
return Error.NotFound(description: $"Track {request.TrackId} not found");
|
|
}
|
|
|
|
var existingLike = await database.TrackLikes
|
|
.SingleOrDefaultAsync(like => like.UserId == request.UserId && like.TrackId == request.TrackId, cancellationToken);
|
|
|
|
bool nowLiked;
|
|
if (existingLike != null)
|
|
{
|
|
database.TrackLikes.Remove(existingLike);
|
|
nowLiked = false;
|
|
}
|
|
else
|
|
{
|
|
await database.TrackLikes.AddAsync(new TrackLike
|
|
{
|
|
UserId = request.UserId,
|
|
TrackId = request.TrackId
|
|
}, cancellationToken);
|
|
nowLiked = true;
|
|
}
|
|
|
|
await database.SaveChangesAsync(cancellationToken);
|
|
|
|
logger.LogInformation("User {UserId} {Action} track {TrackId}",
|
|
request.UserId, nowLiked ? "liked" : "unliked", request.TrackId);
|
|
|
|
return nowLiked;
|
|
}
|
|
}
|