using EntityFrameworkCore.Data;
using Microsoft.EntityFrameworkCore;

using var context = new DeadBallZoneLeagueDbContext();

//PrintTeams();

var teamOne = await context.Teams.FirstAsync(t => t.TeamId == 1);
var teamTwo = await context.Teams.FirstAsync(t => t.TeamId == 2);
var teamThree = await context.Teams.SingleAsync(t => t.TeamId == 3);
var teamFour = await context.Teams.SingleOrDefaultAsync(t => t.TeamId == 3);

// There is no entry for coaches yet, this function will provide a null to coach.
// Rather than raise: "System.InvalidOperationException: Sequence contains no elements."
var coach = await context.Coaches.FirstOrDefaultAsync();

// Selection based on finding the Primary Key.
var teamBasedOnId = await context.Teams.FindAsync(5);
if (teamBasedOnId != null)
{
  Console.WriteLine(teamBasedOnId.Name);
}

void PrintTeams()
{
  var teams = context.Teams.ToList();

  foreach (var team in teams)
  {
    Console.WriteLine(team.Name);
  }
}