using System;
using System.Collections.Generic;
using System.Globalization;
using System.IO;
using System.Linq;

namespace MaDll
{
    public interface ICalculette
    {
        int Addition(int val, int autreVal);
    }


    public class SuperCalculette : ICalculette
    {
    }

    public class Cotation
    {
        public DateTime Date { get; set; }
        public long Volume { get; set; }
        public double High { get; set; }
        public double Low { get; set; }
        public double Close { get; set; }
    }

    public class CotationManager
    {
        public IList<Cotation> Read(string filename)
        {
            var lines = File.ReadAllLines(filename);
            var result = new List<Cotation>();

            for (var i = 1; i < lines.Length; i++)
            {
                var datas = lines[i].Split(',');
                var item = new Cotation();
                item.Date = DateTime.Parse(datas[0]);
                item.High = double.Parse(datas[2], NumberStyles.AllowDecimalPoint, CultureInfo.InvariantCulture);
                item.Low = double.Parse(datas[3], NumberStyles.AllowDecimalPoint, CultureInfo.InvariantCulture);
                item.Close = double.Parse(datas[5], NumberStyles.AllowDecimalPoint, CultureInfo.InvariantCulture);
                item.Volume = long.Parse(datas[6]);
                result.Add(item);
            }

            return result;
        }

        public Cotation PlusBas(IList<Cotation> stocks)
        {
            return stocks.Aggregate((s, x) => s.Low < x.Low ? s : x);
        }

        public Cotation PlusHaut(IList<Cotation> stocks)
        {
            return stocks.Aggregate((s, x) => s.High > x.High ? s : x);
        }
    }
}