deepdrft/DeepDrftData/Data/DeepDrftContextFactory.cs

using Microsoft.EntityFrameworkCore;
using Microsoft.EntityFrameworkCore.Design;
using NetBlocks.Utilities.Environment;

namespace DeepDrftData.Data;

public class DeepDrftContextFactory : IDesignTimeDbContextFactory<DeepDrftContext>
{
    public DeepDrftContext CreateDbContext(string[] args)
    {
        var path = CredentialTools.ResolvePath("connections", "environment/connections.json");

        string? connectionString = null;
        if (File.Exists(path))
        {
            using var doc = System.Text.Json.JsonDocument.Parse(File.ReadAllText(path));
            connectionString = doc.RootElement
                .GetProperty("ConnectionStrings")
                .GetProperty("DefaultConnection")
                .GetString();
        }

        // Fall back to a design-time dummy — the bundle only needs the provider/schema,
        // not a live connection. This removes the requirement to write a dummy file in CI.
        connectionString ??= "Host=localhost;Database=deepdrft-design-time;Username=dummy";

        var optionsBuilder = new DbContextOptionsBuilder<DeepDrftContext>();
        optionsBuilder.UseNpgsql(connectionString);
        return new DeepDrftContext(optionsBuilder.Options);
    }
}