using System.Text.Json;
using FruitBank.Common.Interfaces;
using Microsoft.AspNetCore.Mvc;
using Nop.Core;
using Nop.Core.Domain.Catalog;
using Nop.Core.Domain.Common;
using Nop.Core.Domain.Customers;
using Nop.Core.Domain.Orders;
using Nop.Plugin.Misc.FruitBankPlugin.Domains.DataLayer;
using Nop.Plugin.Misc.FruitBankPlugin.Models;
using Nop.Plugin.Misc.FruitBankPlugin.Models.Orders;
using Nop.Plugin.Misc.FruitBankPlugin.Services;
using Nop.Services.Common;
using Nop.Services.Customers;
using Nop.Web.Areas.Admin.Models.Catalog;
using Nop.Web.Areas.Admin.Models.Orders;
using Nop.Web.Framework.Components;

namespace Nop.Plugin.Misc.FruitBankPlugin.Components
{
    [ViewComponent(Name = "OrderAttributes")]
    public class OrderAttributesViewComponent : NopViewComponent
    {
        private readonly FruitBankAttributeService _fruitBankAttributeService;
        private readonly IWorkContext _workContext;
        private readonly IStoreContext _storeContext;
        private readonly ICustomerService _customerService;
        private FruitBankDbContext _dbContext;

        public OrderAttributesViewComponent(FruitBankDbContext dbContext, FruitBankAttributeService fruitBankAttributeService,
            IWorkContext workContext, IStoreContext storeContext, ICustomerService customerService)
        {
            _workContext = workContext;
            _storeContext = storeContext;
            _fruitBankAttributeService = fruitBankAttributeService;
            _customerService = customerService;

            _dbContext = dbContext;
        }

        public async Task<IViewComponentResult> InvokeAsync(string widgetZone, object additionalData)
        {
            if (additionalData is not OrderModel orderModel) return Content("");

            var model = new OrderAttributesModel { OrderId = orderModel.Id };

            if (model.OrderId > 0)
            {
                var orderDto = await _dbContext.OrderDtos.GetByIdAsync(model.OrderId, true);

                model.IsMeasurable = orderDto.IsMeasurable;
                model.DateOfReceipt = orderDto.DateOfReceipt;
                model.OrderDto = orderDto;

                // Site (telephely) + license plate (rendszám)
                model.CustomerId   = orderDto.CustomerId;
                model.Site         = orderDto.Site;
                model.LicensePlate = orderDto.LicensePlate;
                model.CustomerSites = await BuildCustomerSiteOptionsAsync(orderDto.CustomerId);
                model.CustomerLicensePlateOptions = await BuildCustomerPlateOptionsAsync(orderDto.CustomerId);
            }

            return View("~/Plugins/Misc.FruitBankPlugin/Views/OrderAttributes.cshtml", model);
        }

        // The customer's current sites (telephely) → selector options. Orphaned site
        // ids (deleted addresses) drop out because we iterate the live addresses.
        private async Task<List<OrderSiteOption>> BuildCustomerSiteOptionsAsync(int customerId)
        {
            if (customerId <= 0) return new();

            var json = await _fruitBankAttributeService
                .GetGenericAttributeValueAsync<Customer, string>(customerId, FruitBankPluginConst.CustomerSitesAttribute, 0);
            if (string.IsNullOrWhiteSpace(json)) return new();

            List<CustomerSiteEntry> entries;
            try { entries = JsonSerializer.Deserialize<List<CustomerSiteEntry>>(json) ?? new(); }
            catch { return new(); }
            if (entries.Count == 0) return new();

            var byId = entries.GroupBy(e => e.AddressId).ToDictionary(g => g.Key, g => g.First());
            var addresses = await _customerService.GetAddressesByCustomerIdAsync(customerId);

            return addresses
                .Where(a => byId.ContainsKey(a.Id))
                .Select(a => new OrderSiteOption
                {
                    AddressId = a.Id,
                    Display   = FormatAddress(a),
                    IsDefault = byId[a.Id].IsDefault
                })
                .ToList();
        }

        private async Task<List<string>> BuildCustomerPlateOptionsAsync(int customerId)
        {
            if (customerId <= 0) return new();

            var json = await _fruitBankAttributeService
                .GetGenericAttributeValueAsync<Customer, string>(customerId, FruitBankPluginConst.CustomerLicensePlatesAttribute, 0);
            if (string.IsNullOrWhiteSpace(json)) return new();

            try
            {
                var entries = JsonSerializer.Deserialize<List<CustomerLicensePlateEntry>>(json) ?? new();
                return entries.Select(e => e.Plate).Where(p => !string.IsNullOrWhiteSpace(p)).Distinct().ToList();
            }
            catch { return new(); }
        }

        private static string FormatAddress(Address a)
        {
            var name = !string.IsNullOrWhiteSpace(a.Company) ? a.Company : $"{a.FirstName} {a.LastName}".Trim();
            var locality = $"{a.ZipPostalCode} {a.City}".Trim();
            var display = string.Join(", ", new[] { name, a.Address1, locality }.Where(p => !string.IsNullOrWhiteSpace(p)));
            return string.IsNullOrWhiteSpace(display) ? $"#{a.Id}" : display;
        }
    }
}