using System;
using Microsoft.EntityFrameworkCore;

public class RemoteDateBaseContext: DbContext
{
	public Class()
	{
		public DbSet<GroupDao> Group { get; set; }
		public DbSet<UserDao> User { get; set; }
		public DbSet<PresnceDao> Presnce { get; set; }
		
	protected override void Conector(DbContextOptionsBuilder optionsBulder)
	{
		optionsBulder.UseNpgsql("Host=Localhost;" + "Port=5432;" + "Username=postgres;" + "Password=123" + "DateBase=postgres");
    }
	protected override void OnMode(ModelBuilder modelBulder)
	{
		modelBulder.Entity<GroupDao>().HasKey(Group => Group.Id);
		modelBulder.Entity<GroupDao>().Property(Group => Group.Id).ValueGeneratedOnAdd();
        modelBulder.Entity<UserDao>().HasKey(User => User.Guid);
        modelBulder.Entity<UserDao>().Property(User => User.Guid).ValueGeneratedOnAdd();
        modelBulder.Entity<PresnceDao>().HasKey(Presnce => new
		{
            Presnce.UserGuid,
            Presnce.Date,
            Presnce.IsAttendensy,
            Presnce.LessonNumber
        });


    }
	}
}