using System;
using System.Collections.Generic;
using System.Linq;

namespace RandomTeamGenerator
{
    internal static class Program
    {
        private static void Main()
        {
            Console.WriteLine("Random Team Generator\n");

            var numPlayers = ReadNumber("How many players?");
            var numTeams = ReadNumber("How many teams? ");

            Console.WriteLine("Player Names:");
            var playerNames = new List<string>();
            for (var i = 0; i < numPlayers; i++)
                playerNames.Add(Console.ReadLine());

            do
            {
                DisplayTeams(playerNames, numTeams);
                Console.WriteLine();
                Console.WriteLine("\nRerun? y/n");
            } while (Console.ReadLine() == "y");
        }

        private static int ReadNumber(string prompt)
        {
            Console.WriteLine(prompt);
            int number;
            string input;
            do
            {
                input = Console.ReadLine();
            } while (!int.TryParse(input, out number));
            return number;
        }

        /// <summary>
        /// Generate and display teams with the given players
        /// </summary>
        /// <param name="players"></param>
        /// <param name="teams"></param>
        private static void DisplayTeams(List<string> players, int teams)
        {
            var r = new Random();
            var shuffled = players.OrderBy(o => r.Next()).ToList();
            var perTeam = (int)Math.Ceiling((double)players.Count / teams);
            for (var team = 0; team < teams; team++)
            {
                var teamPlayers = shuffled.Skip(team * perTeam).Take(perTeam);
                Console.WriteLine("Team #" + (team + 1) + ": " + string.Join(", ", teamPlayers));
            }
        }
    }
}