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

namespace Leagues.Handlers
{
	public class GetLeaguesQueryHandler : IRequestHandler<GetLeaguesQuery, PagedList<League>>
	{
		private readonly LeaguesContext _dbContext;

		public GetLeaguesQueryHandler(LeaguesContext dbContext)
		{
			_dbContext = dbContext ?? throw new ArgumentNullException(nameof(dbContext));
		}

		public async Task<PagedList<League>> Handle(GetLeaguesQuery request, CancellationToken cancellationToken)
		{
			var leagues = await _dbContext.Leagues.ToListAsync();
            return PagedList<League>.ToPagedList(await _dbContext.Leagues.ToListAsync(), request.PageNumber, request.PageSize);
		}
	}
}