using Microsoft.Extensions.Logging;
using FishFactoryContracts.BindingModels;
using FishFactoryContracts.BusinessLogicsContracts;
using FishFactoryContracts.SearchModels;
using FishFactoryContracts.StoragesContracts;
using FishFactoryContracts.ViewModels;
using FishFactoryDataModels.Enums;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace FishFactoryBusinessLogic.BusinessLogics
{
    public class OrderLogic : IOrderLogic
    {
        private readonly ILogger _logger;
        private readonly IOrderStorage _orderStorage;
        public OrderLogic(ILogger<OrderLogic> logger, IOrderStorage orderStorage)
        {
            _logger = logger;
            _orderStorage = orderStorage;
        }
        public List<OrderViewModel>? ReadList(OrderSearchModel? model)
        {
            _logger.LogInformation("ReadList. Id: {Id}", model?.Id);
            var list = model == null ? _orderStorage.GetFullList() : _orderStorage.GetFilteredList(model);
            if (list == null)
            {
                _logger.LogWarning("ReadList return null list");
                return null;
            }
            _logger.LogInformation("ReadList. Count: {Count}", list.Count);
            return list;
        }
        public bool CreateOrder(OrderBindingModel model)
        {
            CheckModel(model);
            if (model.Status != OrderStatus.Неизвестен)
            {
                _logger.LogWarning("Invalid order status");
                return false;
            }
            model.Status = OrderStatus.Принят;
            if (_orderStorage.Insert(model) == null)
            {
                _logger.LogWarning("Insert operation failed");
                return false;
            }
            return true;
        }
        public bool TakeOrderInWork(OrderBindingModel model)
        {
            CheckModel(model, false);
            if (_orderStorage.GetElement(new OrderSearchModel { Id = model.Id })?.Status != OrderStatus.Принят)
            {
                _logger.LogWarning("Invalid order status");
                return false;
            }
            model.Status = OrderStatus.Выполняется;
            if (_orderStorage.Update(model) == null)
            {
                _logger.LogWarning("Update operation failed");
            }
            return true;
        }
        public bool FinishOrder(OrderBindingModel model)
        {
            CheckModel(model, false);
            if (_orderStorage.GetElement(new OrderSearchModel { Id = model.Id })?.Status != OrderStatus.Выполняется)
            {
                _logger.LogWarning("Invalid order status");
                return false;
            }
            model.Status = OrderStatus.Готов;
            model.DateImplement = DateTime.Now;
            if (_orderStorage.Update(model) == null)
            {
                _logger.LogWarning("Update operation failed");
            }
            return true;
        }
        public bool DeliveryOrder(OrderBindingModel model)
        {
            CheckModel(model, false);
            var order = _orderStorage.GetElement(new OrderSearchModel { Id = model.Id });
            if (order?.Status != OrderStatus.Готов)
            {
                _logger.LogWarning("Invalid order status");
                return false;
            }
            model.Status = OrderStatus.Выдан;
            model.DateImplement = order.DateImplement;
            if (_orderStorage.Update(model) == null)
            {
                _logger.LogWarning("Update operation failed");
            }
            return true;
        }
        private void CheckModel(OrderBindingModel model, bool withParams = true)
        {
            if (model == null)
            {
                throw new ArgumentNullException(nameof(model));
            }
            if (!withParams)
            {
                return;
            }
            if (model.Sum <= 0)
            {
                throw new ArgumentNullException("Стоимость должна быть больше 0", nameof(model.Sum));
            }
            _logger.LogInformation("Order. Id: {Id}. Sum: {Sum}. ReinforcedId: {ReinforcedId}", model.Id, model.Sum, model.CannedId);
            var element = _orderStorage.GetElement(new OrderSearchModel { Id = model.Id });
            if (element != null && element.Id == model.Id)
            {
                throw new InvalidOperationException("Заказ с таким номером уже есть");
            }
        }
    }
}