ECommerce/ECommerce.Domain/Context.cs

using System.Text.Json;
using Bogus;
using Commerce.Contracts.DTOs;
using Commerce.Domain.Entities;
using Microsoft.AspNetCore.Identity;
using Microsoft.AspNetCore.Identity.EntityFrameworkCore;
using Microsoft.EntityFrameworkCore;

namespace Commerce.Domain;

public class Context : DbContext
{
    public DbSet<Product> Products { get; set; }
    public DbSet<Category> Categories { get; set; }

    public Context(DbContextOptions<Context> options)
        : base(options) { }

    protected override void OnModelCreating(ModelBuilder modelBuilder)
    {
        base.OnModelCreating(modelBuilder);

        if (Database.IsNpgsql())
        {
            modelBuilder.Entity<Product>(entity =>
            {
                entity.OwnsMany(e => e.Translations, b =>
                {
                    b.ToJson();
                    b.OwnsOne(t => t.Info, i =>
                    {
                        i.OwnsMany(ti => ti.TechnicalDetails);
                    });
                });
            });

            modelBuilder.Entity<Category>(entity =>
            {
                entity.OwnsMany(e => e.Translations, b =>
                {
                    b.ToJson();
                    b.OwnsOne(t => t.Info, i =>
                    {
                        i.OwnsMany(ti => ti.TechnicalDetails);
                    });
                });
            });
        }
        else
        {
            var productTranslationsConverter = new Microsoft.EntityFrameworkCore.Storage.ValueConversion.ValueConverter<List<ProductTranslation>, string>(
                v => JsonSerializer.Serialize(v, (JsonSerializerOptions?)null),
                v => JsonSerializer.Deserialize<List<ProductTranslation>>(v, (JsonSerializerOptions?)null) ?? new List<ProductTranslation>());

            var categoryTranslationsConverter = new Microsoft.EntityFrameworkCore.Storage.ValueConversion.ValueConverter<List<CategoryTranslation>, string>(
                v => JsonSerializer.Serialize(v, (JsonSerializerOptions?)null),
                v => JsonSerializer.Deserialize<List<CategoryTranslation>>(v, (JsonSerializerOptions?)null) ?? new List<CategoryTranslation>());

            modelBuilder.Entity<Product>(entity =>
            {
                entity.Property(e => e.Translations).HasConversion(productTranslationsConverter);
            });

            modelBuilder.Entity<Category>(entity =>
            {
                entity.Property(e => e.Translations).HasConversion(categoryTranslationsConverter);
            });
        }
    }
}