Musify/backend/Musify.Application/Configuration/ConfigurationDependencyInjection.cs

using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Options;

namespace Musify.Application.Configuration;

public static class ConfigurationDependencyInjection
{
    public static IServiceCollection AddValidatedOptions<T>(
        this IServiceCollection services,
        IConfiguration configuration,
        string sectionName)
        where T : class
    {
        services
            .AddOptionsWithValidateOnStart<T>()
            .Bind(configuration.GetRequiredSection(sectionName))
            .ValidateDataAnnotations();

        services.AddSingleton(serviceProvider =>
            serviceProvider.GetRequiredService<IOptions<T>>().Value);

        return services;
    }
}