using Grand.Business.Core.Extensions;
using Grand.Business.Core.Interfaces.Common.Directory;
using Grand.Business.Core.Interfaces.Common.Localization;
using Grand.Business.Core.Interfaces.Marketing.Newsletters;
using Grand.Domain.Customers;
using Grand.Domain.Tax;
using Grand.Web.Common.Security.Captcha;
using Grand.Web.Features.Models.Customers;
using Grand.Web.Models.Customer;
using Grand.Web.Models.Newsletter;
using MediatR;
using Microsoft.AspNetCore.Mvc.Rendering;

namespace Grand.Web.Features.Handlers.Customers;

public class GetRegisterHandler : IRequestHandler<GetRegister, RegisterModel>
{
    private readonly CaptchaSettings _captchaSettings;
    private readonly ICountryService _countryService;

    private readonly CustomerSettings _customerSettings;
    private readonly IMediator _mediator;

    private readonly INewsletterCategoryService _newsletterCategoryService;
    private readonly TaxSettings _taxSettings;
    private readonly ITranslationService _translationService;

    public GetRegisterHandler(
        INewsletterCategoryService newsletterCategoryService,
        ITranslationService translationService,
        ICountryService countryService,
        IMediator mediator,
        CustomerSettings customerSettings,
        TaxSettings taxSettings,
        CaptchaSettings captchaSettings)
    {
        _newsletterCategoryService = newsletterCategoryService;
        _translationService = translationService;
        _countryService = countryService;
        _mediator = mediator;
        _customerSettings = customerSettings;
        _taxSettings = taxSettings;
        _captchaSettings = captchaSettings;
    }

    public async Task<RegisterModel> Handle(GetRegister request, CancellationToken cancellationToken)
    {
        var model = new RegisterModel();
        if (request.Model != null)
            model = request.Model;
        else
            //enable newsletter by default
            model.Newsletter = _customerSettings.NewsletterTickedByDefault;

        model.DisplayVatNumber = _taxSettings.EuVatEnabled;
        //form fields
        model.GenderEnabled = _customerSettings.GenderEnabled;
        model.DateOfBirthEnabled = _customerSettings.DateOfBirthEnabled;
        model.DateOfBirthRequired = _customerSettings.DateOfBirthRequired;
        model.FirstLastNameRequired = _customerSettings.FirstLastNameRequired;
        model.CompanyEnabled = _customerSettings.CompanyEnabled;
        model.CompanyRequired = _customerSettings.CompanyRequired;
        model.StreetAddressEnabled = _customerSettings.StreetAddressEnabled;
        model.StreetAddressRequired = _customerSettings.StreetAddressRequired;
        model.StreetAddress2Enabled = _customerSettings.StreetAddress2Enabled;
        model.StreetAddress2Required = _customerSettings.StreetAddress2Required;
        model.ZipPostalCodeEnabled = _customerSettings.ZipPostalCodeEnabled;
        model.ZipPostalCodeRequired = _customerSettings.ZipPostalCodeRequired;
        model.CityEnabled = _customerSettings.CityEnabled;
        model.CityRequired = _customerSettings.CityRequired;
        model.CountryEnabled = _customerSettings.CountryEnabled;
        model.CountryRequired = _customerSettings.CountryRequired;
        model.StateProvinceEnabled = _customerSettings.StateProvinceEnabled;
        model.StateProvinceRequired = _customerSettings.StateProvinceRequired;
        model.PhoneEnabled = _customerSettings.PhoneEnabled;
        model.PhoneRequired = _customerSettings.PhoneRequired;
        model.FaxEnabled = _customerSettings.FaxEnabled;
        model.FaxRequired = _customerSettings.FaxRequired;
        model.NewsletterEnabled = _customerSettings.NewsletterEnabled;
        model.AcceptPrivacyPolicyEnabled = _customerSettings.AcceptPrivacyPolicyEnabled;
        model.UsernamesEnabled = _customerSettings.UsernamesEnabled;
        model.CheckUsernameAvailabilityEnabled = _customerSettings.CheckUsernameAvailabilityEnabled;
        model.DisplayCaptcha = _captchaSettings.Enabled && _captchaSettings.ShowOnRegistrationPage;

        //countries and states
        if (_customerSettings.CountryEnabled)
        {
            model.AvailableCountries.Add(new SelectListItem
                { Text = _translationService.GetResource("Address.SelectCountry"), Value = "" });

            foreach (var c in await _countryService.GetAllCountries(request.Language.Id, request.Store.Id))
                model.AvailableCountries.Add(new SelectListItem {
                    Text = c.GetTranslation(x => x.Name, request.Language.Id),
                    Value = c.Id,
                    Selected = c.Id == model.CountryId
                });

            if (_customerSettings.StateProvinceEnabled)
            {
                //states
                var states = await _countryService.GetStateProvincesByCountryId(model.CountryId, request.Language.Id);
                model.AvailableStates.Add(new SelectListItem
                    { Text = _translationService.GetResource("Address.SelectState"), Value = "" });

                foreach (var s in states)
                    model.AvailableStates.Add(new SelectListItem {
                        Text = s.GetTranslation(x => x.Name, request.Language.Id), Value = s.Id,
                        Selected = s.Id == model.StateProvinceId
                    });
            }
        }

        //custom customer attributes
        var customAttributes = await _mediator.Send(new GetCustomAttributes {
            Customer = request.Customer,
            Language = request.Language,
            OverrideAttributes = request.OverrideCustomCustomerAttributes
        }, cancellationToken);
        foreach (var item in customAttributes.Where(x => !x.IsReadOnly)) model.CustomerAttributes.Add(item);

        //newsletter categories
        var newsletterCategories = await _newsletterCategoryService.GetNewsletterCategoriesByStore(request.Store.Id);
        foreach (var item in newsletterCategories)
            model.NewsletterCategories.Add(new NewsletterSimpleCategory {
                Id = item.Id,
                Name = item.GetTranslation(x => x.Name, request.Language.Id),
                Description = item.GetTranslation(x => x.Description, request.Language.Id),
                Selected = item.Selected
            });
        return model;
    }
}