Assignment6/Data/PostgresApplicationDbContextFactory.cs

using Microsoft.EntityFrameworkCore;
using Microsoft.EntityFrameworkCore.Design;

namespace Example.Data;

public sealed class PostgresApplicationDbContextFactory : IDesignTimeDbContextFactory<PostgresApplicationDbContext>
{
    public PostgresApplicationDbContext CreateDbContext(string[] args)
    {
        var configuration = DesignTimeConfiguration.Create(includeDevelopmentSettings: false);
        var connectionString = configuration.GetConnectionString("DefaultConnection")
            ?? throw new InvalidOperationException("Connection string 'DefaultConnection' was not found.");

        var optionsBuilder = new DbContextOptionsBuilder<PostgresApplicationDbContext>();
        optionsBuilder.UseNpgsql(connectionString);

        return new PostgresApplicationDbContext(optionsBuilder.Options);
    }
}