using Microsoft.EntityFrameworkCore; // DbContext, DbSet<T>

namespace Packt.Shared;

public class Northwind : DbContext
{
  public DbSet<Category> Categories { get; set; } = null!;
  public DbSet<Product> Products { get; set; } = null!;

  protected override void OnConfiguring(
    DbContextOptionsBuilder optionsBuilder)
  {
    string path = Path.Combine(
      Environment.CurrentDirectory, "Northwind.db");

    optionsBuilder.UseSqlite($"Filename={path}");

    /*
    string connection = "Data Source=.;" +
        "Initial Catalog=Northwind;" +
        "Integrated Security=true;" +
        "MultipleActiveResultSets=true;";

    optionsBuilder.UseSqlServer(connection);
    */
  }

  protected override void OnModelCreating(
    ModelBuilder modelBuilder)
  {
    if ((Database.ProviderName is not null) 
      && (Database.ProviderName.Contains("Sqlite")))
    {
      modelBuilder.Entity<Product>()
        .Property(product => product.UnitPrice)
        .HasConversion<double>();
    }
  }
}