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

namespace Divisions.Handlers
{
	public class GetDivisionByIdQueryHandler : IRequestHandler<GetDivisionByIdQuery, Division>
	{
		private readonly DivisionsContext _dbContext;

		public GetDivisionByIdQueryHandler(DivisionsContext dbContext)
		{
			_dbContext = dbContext ?? throw new ArgumentNullException(nameof(dbContext));
		}

		public async Task<Division> Handle(GetDivisionByIdQuery request, CancellationToken cancellation)
		{
			return await _dbContext.Divisions.Where(d => d.Id == request.DivisionId).FirstOrDefaultAsync();
		}
	}
}