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PaymentModelFactory.cs

using Nop.Services.Directory;
using Nop.Services.Localization;
using Nop.Services.Payments;
using Nop.Web.Areas.Admin.Infrastructure.Mapper.Extensions;
using Nop.Web.Areas.Admin.Models.Directory;
using Nop.Web.Areas.Admin.Models.Payments;
using Nop.Web.Framework.Models.Extensions;

namespace Nop.Web.Areas.Admin.Factories;

/// 
/// Represents the payment method model factory implementation
/// 
public partial class PaymentModelFactory : IPaymentModelFactory
{
    #region Fields

    protected readonly ICountryService _countryService;
    protected readonly ILocalizationService _localizationService;
    protected readonly IPaymentPluginManager _paymentPluginManager;
    protected readonly IStateProvinceService _stateProvinceService;

    #endregion

    #region Ctor

    public PaymentModelFactory(ICountryService countryService,
        ILocalizationService localizationService,
        IPaymentPluginManager paymentPluginManager,
        IStateProvinceService stateProvinceService)
    {
        _countryService = countryService;
        _localizationService = localizationService;
        _paymentPluginManager = paymentPluginManager;
        _stateProvinceService = stateProvinceService;
    }

    #endregion

    #region Methods

    /// 
    /// Prepare payment methods model
    /// 
    /// Payment methods model
    /// 
    /// A task that represents the asynchronous operation
    /// The task result contains the payment methods model
    /// 
    public virtual async Task PreparePaymentMethodsModelAsync(PaymentMethodsModel methodsModel)
    {
        ArgumentNullException.ThrowIfNull(methodsModel);

        //prepare nested search models
        await PreparePaymentMethodSearchModelAsync(methodsModel.PaymentsMethod);
        await PreparePaymentMethodRestrictionModelAsync(methodsModel.PaymentMethodRestriction);

        return methodsModel;
    }

    /// 
    /// Prepare paged payment method list model
    /// 
    /// Payment method search model
    /// 
    /// A task that represents the asynchronous operation
    /// The task result contains the payment method list model
    /// 
    public virtual async Task PreparePaymentMethodListModelAsync(PaymentMethodSearchModel searchModel)
    {
        ArgumentNullException.ThrowIfNull(searchModel);

        //get payment methods
        var paymentMethods = (await _paymentPluginManager.LoadAllPluginsAsync()).ToPagedList(searchModel);

        //prepare grid model
        var model = await new PaymentMethodListModel().PrepareToGridAsync(searchModel, paymentMethods, () =>
        {
            return paymentMethods.SelectAwait(async method =>
            {
                //fill in model values from the entity
                var paymentMethodModel = method.ToPluginModel();

                //fill in additional values (not existing in the entity)
                paymentMethodModel.IsActive = _paymentPluginManager.IsPluginActive(method);
                paymentMethodModel.ConfigurationUrl = method.GetConfigurationPageUrl();

                paymentMethodModel.LogoUrl = await _paymentPluginManager.GetPluginLogoUrlAsync(method);
                paymentMethodModel.RecurringPaymentType = await _localizationService.GetLocalizedEnumAsync(method.RecurringPaymentType);

                return paymentMethodModel;
            });
        });

        return model;
    }

    /// 
    /// Prepare payment method search model
    /// 
    /// Payment method search model
    /// 
    /// A task that represents the asynchronous operation
    /// The task result contains the payment method search model
    /// 
    public virtual Task PreparePaymentMethodSearchModelAsync(PaymentMethodSearchModel searchModel)
    {
        ArgumentNullException.ThrowIfNull(searchModel);

        //prepare page parameters
        searchModel.SetGridPageSize();

        return Task.FromResult(searchModel);
    }

    /// 
    /// Prepare payment method restriction model
    /// 
    /// Payment method restriction model
    /// 
    /// A task that represents the asynchronous operation
    /// The task result contains the payment method restriction model
    /// 
    public virtual async Task PreparePaymentMethodRestrictionModelAsync(PaymentMethodRestrictionModel model)
    {
        ArgumentNullException.ThrowIfNull(model);

        var countries = await _countryService.GetAllCountriesAsync(showHidden: true);
        model.AvailableCountries = await countries.SelectAwait(async country =>
        {
            var countryModel = country.ToModel();
            countryModel.NumberOfStates = (await _stateProvinceService.GetStateProvincesByCountryIdAsync(country.Id))?.Count ?? 0;

            return countryModel;
        }).ToListAsync();

        foreach (var method in await _paymentPluginManager.LoadAllPluginsAsync())
        {
            var paymentMethodModel = method.ToPluginModel();
            paymentMethodModel.RecurringPaymentType = await _localizationService.GetLocalizedEnumAsync(method.RecurringPaymentType);

            model.AvailablePaymentMethods.Add(paymentMethodModel);

            var restrictedCountries = await _paymentPluginManager.GetRestrictedCountryIdsAsync(method);
            foreach (var country in countries)
            {
                if (!model.Restricted.ContainsKey(method.PluginDescriptor.SystemName))
                    model.Restricted[method.PluginDescriptor.SystemName] = new Dictionary();

                model.Restricted[method.PluginDescriptor.SystemName][country.Id] = restrictedCountries.Contains(country.Id);
            }
        }

        return model;
    }

    #endregion
}