using Mediator;
using Microsoft.EntityFrameworkCore;
using Musify.Application.Contracts;

namespace Musify.Application.Users;

public record IsFollowingUserQuery(long FollowerId, long FollowedId) : IQuery<bool>;

public class IsFollowingUserQueryHandler(IDatabase database)
    : IQueryHandler<IsFollowingUserQuery, bool>
{
    public ValueTask<bool> Handle(IsFollowingUserQuery request, CancellationToken cancellationToken) =>
        new(database.UserFollows
            .AsNoTracking()
            .AnyAsync(f => f.FollowerId == request.FollowerId && f.FollowedId == request.FollowedId, cancellationToken));
}