using System;
using Leagues.DbContexts;
using Leagues.Entities;
using Leagues.Queries;
using MediatR;
using Microsoft.EntityFrameworkCore;

namespace Leagues.Handlers
{
	public class GetLeagueByIdQueryHandler : IRequestHandler<GetLeagueByIdQuery, League>
	{
		private readonly LeaguesContext _dbContext;

		public GetLeagueByIdQueryHandler(LeaguesContext dbContext)
		{
			_dbContext = dbContext ?? throw new ArgumentException(nameof(dbContext));
		}

		public async Task<League> Handle(GetLeagueByIdQuery request, CancellationToken cancellation)
		{
			return await _dbContext.Leagues.Where(l => l.Id == request.LeagueId).FirstOrDefaultAsync();
		}
	}
}