using System;
using Games.Commands;
using Games.DbContexts;
using Games.Entities;
using MediatR;

namespace Games.Handlers
{
	public class AddGamesCommandHandler : IRequestHandler<AddGamesCommand, Unit>
	{
		private readonly GamesContext _dbContext;

		public AddGamesCommandHandler(GamesContext dbContext)
		{
			_dbContext = dbContext ?? throw new ArgumentNullException(nameof(dbContext));
		}

		public async Task<Unit> Handle(AddGamesCommand request, CancellationToken cancellationToken)
		{
			await _dbContext.Games.AddRangeAsync(request.games, cancellationToken);

			_dbContext.SaveChanges();

			return Unit.Value;
		}
	}
}