using CMSMicroservice.Application.Common.Interfaces;
using CMSMicroservice.Infrastructure.Services.Payment;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;

namespace CMSMicroservice.Infrastructure.Services.Payment;

public class PaymentGatewayResolver : IPaymentGatewayResolver
{
    private readonly IServiceProvider _serviceProvider;
    private readonly IConfiguration _configuration;

    public PaymentGatewayResolver(IServiceProvider serviceProvider, IConfiguration configuration)
    {
        _serviceProvider = serviceProvider;
        _configuration = configuration;
    }

    public IPaymentGatewayService Get(string? provider)
    {
        var key = Normalize(provider)
            ?? Normalize(_configuration["PaymentProvider"])
            ?? "zarinpal";

        return key switch
        {
            "20card" or "twentycard" => _serviceProvider.GetRequiredService<TwentyCardPaymentService>(),
            "zarinpal" => _serviceProvider.GetRequiredService<ZarinPalPaymentService>(),
            _ => _serviceProvider.GetRequiredService<IPaymentGatewayService>()
        };
    }

    private static string? Normalize(string? value)
        => string.IsNullOrWhiteSpace(value) ? null : value.Trim().ToLowerInvariant();
}