#nullable enable
using AyCode.Core.Loggers;
using AyCode.Utils.Extensions;
using FruitBank.Common.Entities;
using FruitBank.Common.Interfaces;
using FruitBank.Common.Models;
using FruitBank.Common.Server;
using LinqToDB;
using LinqToDB.Common;
using Mango.Nop.Core.Loggers;
using Mango.Nop.Core.Repositories;
using Nop.Core;
using Nop.Core.Caching;
using Nop.Core.ComponentModel;
using Nop.Core.Domain.Catalog;
using Nop.Core.Domain.Customers;
using Nop.Data;
using Nop.Plugin.Misc.FruitBankPlugin.Domains.DataLayer.Interfaces;
using Nop.Plugin.Misc.FruitBankPlugin.Services;
using Nop.Services.Catalog;
using Nop.Services.Common;
using System.Transactions;
using FruitBank.Common.Dtos;
using Mango.Nop.Core.Dtos;

namespace Nop.Plugin.Misc.FruitBankPlugin.Domains.DataLayer;

public class FruitBankDbContext : MgDbContextBase, IPartnerDbSet<PartnerDbTable>, IShippingDbSet<ShippingDbTable>, IShippingItemDbSet<ShippingItemDbTable>, IShippingDocumentDbSet<ShippingDocumentDbTable>
{
    private readonly FruitBankAttributeService _fruitBankAttributeService;
    private readonly IStoreContext _storeContext;
    private readonly IProductService _productService;
    private readonly IStaticCacheManager _staticCacheManager;

    public PartnerDbTable Partners { get; set; }
    public ShippingDbTable Shippings { get; set; }
    public ShippingItemDbTable ShippingItems { get; set; }
    public ShippingDocumentDbTable ShippingDocuments { get; set; }

    public IRepository<Product> Products { get; set; }
    public IRepository<Customer> Customers { get; set; }
    public IRepository<CustomerRole> CustomerRoles { get; set; }
    public IRepository<CustomerCustomerRoleMapping> CustomerRoleMappings { get; set; }


    public FruitBankDbContext(INopDataProvider dataProvider, ILockService lockService, FruitBankAttributeService fruitBankAttributeService, IStoreContext storeContext,
        PartnerDbTable partnerDbTable, ShippingDbTable shippingDbTable, ShippingItemDbTable shippingItemDbTable,
        ShippingDocumentDbTable shippingDocumentDbTable, IProductService productService, IStaticCacheManager staticCacheManager,
        IRepository<Product> productRepository,
        IRepository<Customer> customerRepository,
        IRepository<CustomerCustomerRoleMapping> customerCustomerRoleMappingRepository,
        IRepository<CustomerRole> customerRoleRepository,
        IEnumerable<IAcLogWriterBase> logWriters) : base(dataProvider, lockService, logWriters)
    {
        _storeContext = storeContext;
        _productService = productService;
        _staticCacheManager = staticCacheManager;
        _fruitBankAttributeService = fruitBankAttributeService;

        Partners = partnerDbTable;
        Shippings = shippingDbTable;
        ShippingItems = shippingItemDbTable;
        ShippingDocuments = shippingDocumentDbTable;

        Products = productRepository;
        Customers = customerRepository;
        CustomerRoles = customerRoleRepository;
        CustomerRoleMappings = customerCustomerRoleMappingRepository;
    }

    public IQueryable<MeasuringModel> GetMeasuringModelByShippingId(int shippingId)
    {
        var query =
            from p in Partners.Table
            join s in Shippings.Table on p.Id equals s.PartnerId
            where s.Id == shippingId
            select new MeasuringModel(p.Name);

        return query;
    }

    public IQueryable<Customer> GetCustomersBySystemRoleName(string systemRoleName)
    {
        if (systemRoleName.IsNullOrWhiteSpace()) throw new ArgumentException("systemRoleName.IsNullOrWhiteSpace()", nameof(systemRoleName));

        var query =
            from c in Customers.Table
            join crm in CustomerRoleMappings.Table on c.Id equals crm.CustomerId
            join cr in CustomerRoles.Table on crm.CustomerRoleId equals cr.Id
            where c.Active && !c.Deleted && cr.SystemName == systemRoleName
            select c;

        return query.Distinct().OrderBy(o => o.Username);
    }

    public IQueryable<CustomerRole> GetCustomerRolesByCustomerId(int customerId)
    {
        var query =
            from cr in CustomerRoles.Table
            join crm in CustomerRoleMappings.Table on cr.Id equals crm.CustomerRoleId
            where crm.CustomerId == customerId
            select cr;

        return query.Distinct();
    }

    public IQueryable<Product> GetAllProducts(bool includeDeleted)
        => Products.Table.Where(p => includeDeleted || !p.Deleted).OrderBy(o => o.Name);

    public IQueryable<ProductDto> GetAllProductDtos(bool includeDeleted)
        => GetAllProducts(includeDeleted).Select(product => new ProductDto(product));

    public IAsyncEnumerable<MeasuringProductDto> GetAllMeasuringProductDtos(bool includeDeleted)
        => GetAllProducts(includeDeleted).SelectAwait(async product => new MeasuringProductDto(product, await GetMeasuringAttributeValuesByProductIdAsync(product.Id)));

    public async Task<MeasuringProductDto?> GetMeasuringProductDtoByIdAsync(int productId)
        => await Products.Table.Where(product => product.Id == productId).SelectAwait(async product => new MeasuringProductDto(product, await GetMeasuringAttributeValuesByProductIdAsync(product.Id))).FirstOrDefaultAsync();

    public async Task<MeasuringAttributeValues?> GetMeasuringAttributeValuesByProductIdAsync(int productId)
        => await _fruitBankAttributeService.GetMeasuringAttributeValuesAsync<Product>(productId);

    public Task<bool> UpdateMeasuredShippingItemAsync(ShippingItem shippingItem)
    {
        if (shippingItem.IsValidMeasuringValues()) return UpdateShippingItemAsync(shippingItem);

        Logger.Error("shippingItem.IsMeasurable && !shippingItem.IsValidMeasuringValues()");
        return Task.FromResult(false);
    }

    public Task<bool> UpdateShippingItemAsync(ShippingItem shippingItem)
    {
        if (shippingItem == null)
        {
            Logger.Error("shippingItem == null");
            return Task.FromResult(false);
        }

        return TransactionSafeAsync(async tr =>
        {
            try
            {
                //Mi van ha nem jött meg a termék? Nem fogják tudni menteni... - J.

                Product? product = null;
                var productIsMeasurable = false;

                if (shippingItem.ProductId > 0)
                {
                    product = await Products.GetByIdAsync(shippingItem.ProductId);

                    if (product == null)
                        throw new Exception($"shippingItem.ProductId > 0 && product == null; shippingItem.ProductId: {shippingItem.ProductId}");

                    productIsMeasurable = await _fruitBankAttributeService.IsMeasurableEntityAsync<Product>(product.Id);
                }

                shippingItem.IsMeasurable = productIsMeasurable;

                if (shippingItem.MeasuredQuantity <= 0) shippingItem.MeasuredQuantity = null;
                if (!shippingItem.IsMeasurable || shippingItem.MeasuredNetWeight <= 0) shippingItem.MeasuredNetWeight = null;
                if (!shippingItem.IsMeasurable || shippingItem.MeasuredGrossWeight <= 0) shippingItem.MeasuredGrossWeight = null;

                //Update előtt kivesszük a korábbi ShippingItem-et a db-ből! - J.
                var dbShippingItem = await ShippingItems.GetByIdAsync(shippingItem.Id);
                if (dbShippingItem == null) throw new Exception($"dbShippingItem == null; shippingItem.Id: {shippingItem.Id}");

                shippingItem.IsMeasured = product != null && shippingItem.IsValidMeasuringValues();

                await ShippingItems.UpdateAsync(shippingItem, shippingItem.IsMeasured != dbShippingItem.IsMeasured);

                if (shippingItem.ProductId == dbShippingItem.ProductId &&
                    shippingItem.IsMeasured == dbShippingItem.IsMeasured && shippingItem.IsMeasurable == dbShippingItem.IsMeasurable &&
                    shippingItem.MeasuredQuantity == dbShippingItem.MeasuredQuantity &&
                    // ReSharper disable once CompareOfFloatsByEqualityOperator
                    shippingItem.MeasuredNetWeight == dbShippingItem.MeasuredNetWeight && 
                    // ReSharper disable once CompareOfFloatsByEqualityOperator
                    shippingItem.MeasuredGrossWeight == dbShippingItem.MeasuredGrossWeight)
                {
                    return true;
                }

                var productIdUnchanged = shippingItem.ProductId == dbShippingItem.ProductId;

                if (shippingItem.IsMeasured)
                {
                    product!.StockQuantity += productIdUnchanged ? shippingItem.MeasuredQuantity!.Value - dbShippingItem.MeasuredQuantity.GetValueOrDefault(0) : shippingItem.MeasuredQuantity!.Value;

                    if (!await UpdateProductStockQuantityAsync(product, true))
                        throw new Exception($"UpdateProductStockQuantity() == false; shippingItem! product.Id: {product.Id}");

                    if (productIsMeasurable)
                    {
                        var measuringValues = new MeasuringAttributeValues
                        {
                            Id = product.Id,
                            NetWeight = productIdUnchanged ? shippingItem.MeasuredNetWeight - dbShippingItem.MeasuredNetWeight.GetValueOrDefault(0) : shippingItem.MeasuredNetWeight,
                            GrossWeight = productIdUnchanged ? shippingItem.MeasuredGrossWeight - dbShippingItem.MeasuredGrossWeight.GetValueOrDefault(0) : shippingItem.MeasuredGrossWeight,
                            IsMeasurable = shippingItem.IsMeasurable
                        };

                        await _fruitBankAttributeService.InsertOrUpdateMeasuringAttributeValuesAsync<Product>(measuringValues, true);
                    }
                }

                if (productIdUnchanged || !dbShippingItem.IsMeasured) return true;

                product = await Products.GetByIdAsync(dbShippingItem.ProductId);

                if (product != null)
                {
                    productIsMeasurable = await _fruitBankAttributeService.IsMeasurableEntityAsync<Product>(product.Id);
                    product.StockQuantity -= dbShippingItem.MeasuredQuantity.GetValueOrDefault(0);

                    if (!await UpdateProductStockQuantityAsync(product, true))
                        throw new Exception($"UpdateProductStockQuantity() == false; dbShippingItem! product.Id: {product.Id}");

                    if (!productIsMeasurable) return true;

                    var measuringValues = new MeasuringAttributeValues(product.Id, -dbShippingItem.MeasuredNetWeight.GetValueOrDefault(0), -dbShippingItem.MeasuredGrossWeight.GetValueOrDefault(0), dbShippingItem.IsMeasurable);
                    await _fruitBankAttributeService.InsertOrUpdateMeasuringAttributeValuesAsync<Product>(measuringValues, true);

                }
                else Logger.Warning($"product == null; dbShippingItem.ProductId: {dbShippingItem.ProductId}");
                //else //TODO: productIdUnchanged-et lekezelni! - J.

                return true;
            }
            catch (Exception ex)
            {
                throw new Exception($"UpdateShippingItemAsync->TransactionSafeAsync error! shippingItem.Id: {shippingItem.Id}; ex: {ex.Message}", ex);
            }
        });
    }



    private async Task<bool> UpdateProductStockQuantityAsync(int productId, bool publishEvent)
    {
        var product = await Products.GetByIdAsync(productId);
        if (product != null) return await UpdateProductStockQuantityAsync(product, publishEvent);

        Logger.Error($"product == null; id: {productId}");
        return await Task.FromResult(false);
    }

    private async Task<bool> UpdateProductStockQuantityAsync(Product product, bool publishEvent)
    {
        //Itt mi legyen? RollBack? - J.
        if (product.StockQuantity < 0)
            Logger.Error($"product.StockQuantity < 0; Id: {product.Id}; StockQuantity: {product.StockQuantity}");

        await Products.UpdateAsync(product, publishEvent);
        return await Task.FromResult(true);

        //var updatedRowsCount = await DataProvider.ExecuteNonQueryAsync($"update product set {nameof(Product.StockQuantity)} = {product.StockQuantity} where {nameof(Product.Id)} = {product.Id}");
        //if (updatedRowsCount == 1) return await Task.FromResult(true);

        //Logger.Error($"Product updatedRowsCount != 1; id: {product.Id}");
        //return await Task.FromResult(false);
    }

    public async Task<List<ShippingDocument>> GetShippingDocumentsByShippingIdAsync(int shippingId)
    {
        var list = await ShippingDocuments.GetAll(true).Where(sd => sd.ShippingId == shippingId).ToListAsync();
        return list;
    }
}