using NeonSprawl.Server.Game.PositionState;

namespace NeonSprawl.Server.Game.Contracts;

/// <summary>Registers contract instance + outcome persistence (NEO-146).</summary>
public static class ContractInstanceServiceCollectionExtensions
{
    /// <summary>PostgreSQL when <c>ConnectionStrings:NeonSprawl</c> is set; otherwise in-memory fallback.</summary>
    public static IServiceCollection AddContractInstanceStores(this IServiceCollection services, IConfiguration configuration)
    {
        var cs = configuration.GetConnectionString(PositionStateServiceCollectionExtensions.NeonSprawlConnectionStringName);
        if (!string.IsNullOrWhiteSpace(cs))
        {
            services.AddSingleton<IContractInstanceStore, PostgresContractInstanceStore>();
            services.AddSingleton<IContractOutcomeStore, PostgresContractOutcomeStore>();
        }
        else
        {
            services.AddSingleton<IContractInstanceStore, InMemoryContractInstanceStore>();
            services.AddSingleton<IContractOutcomeStore, InMemoryContractOutcomeStore>();
        }

        return services;
    }
}