using CarRepairShopContracts.BindingModels;
using CarRepairShopContracts.BusinessLogicsContracts;
using CarRepairShopContracts.SearchModels;
using CarRepairShopContracts.ViewModels;
using CarRepairShopDataModels.Enums;
using Microsoft.Extensions.Logging;

namespace CarRepairShopBusinessLogic.BusinessLogics
{
	public class WorkModeling : IWorkProcess
	{
		private readonly ILogger _logger;
		private readonly Random _rnd;
		private IOrderLogic? _orderLogic;
		public WorkModeling(ILogger<WorkModeling> logger)
		{
			_logger = logger;
			_rnd = new Random(1000);
		}
		public void DoWork(IImplementerLogic implementerLogic, IOrderLogic orderLogic)
		{
			_orderLogic = orderLogic;
			var implementers = implementerLogic.ReadList(null);
			if (implementers == null)
			{
				_logger.LogWarning("DoWork. Implementers is null");
				return;
			}
			var deliveredOrders = _orderLogic.ReadList(new OrderSearchModel
			{
				Status = OrderStatus.Выдан
			});
			var allOrders = _orderLogic.ReadList(null);
			if (deliveredOrders == null || allOrders == null || deliveredOrders.Count == allOrders.Count)
			{
				_logger.LogWarning("DoWork. Orders is null or empty");
				return;
			}
			deliveredOrders.ForEach(x => allOrders.Remove(x));
			_logger.LogDebug("DoWork for {Count} orders", allOrders.Count);
			foreach (var implementer in implementers)
			{
				Task.Run(() => WorkerWorkAsync(implementer, allOrders));
			}
		}
		private async Task WorkerWorkAsync(ImplementerViewModel implementer,
	   List<OrderViewModel> orders)
		{
			if (_orderLogic == null || implementer == null)
			{
				return;
			}
			await DeliverWaitingOrder(implementer);
			await RunOrderInWork(implementer);
			await Task.Run(() =>
			{
				foreach (var order in orders)
				{
					try
					{
						_logger.LogDebug("DoWork. Worker {Id} try get order { Order}", implementer.Id, order.Id);
						_orderLogic.TakeOrderInWork(new OrderBindingModel
						{
							Id = order.Id,
							ImplementerId = implementer.Id
						});
						Thread.Sleep(implementer.WorkExperience * _rnd.Next(100, 1000) * order.Count);
						_logger.LogDebug("DoWork. Worker {Id} finish order { Order}", implementer.Id, order.Id);
						_orderLogic.FinishOrder(new OrderBindingModel
						{
							Id = order.Id
						});
						_orderLogic.DeliveryOrder(new OrderBindingModel
						{
							Id = order.Id
						});
						Thread.Sleep(implementer.Qualification * _rnd.Next(10, 100));
					}
					catch (InvalidOperationException ex)
					{
						_logger.LogWarning(ex, "Error try get work");
					}
					catch (Exception ex)
					{
						_logger.LogError(ex, "Error while do work");
						throw;
					}
				}
			});
		}
		private async Task RunOrderInWork(ImplementerViewModel implementer)
		{
			if (_orderLogic == null || implementer == null)
			{
				return;
			}
			try
			{
				var runOrder = await Task.Run(() => _orderLogic.ReadElement(new
			   OrderSearchModel
				{
					ImplementerId = implementer.Id,
					Status = OrderStatus.Выполняется
				}));
				if (runOrder == null)
				{
					return;
				}
				_logger.LogDebug("DoWork. Worker {Id} back to order {Order}", implementer.Id, runOrder.Id);
				Thread.Sleep(implementer.WorkExperience * _rnd.Next(100, 300) * runOrder.Count);
				_logger.LogDebug("DoWork. Worker {Id} finish order {Order}", implementer.Id, runOrder.Id);
				_orderLogic.FinishOrder(new OrderBindingModel
				{
					Id = runOrder.Id
				});
				_orderLogic.DeliveryOrder(new OrderBindingModel
				{
					Id = runOrder.Id
				});
				Thread.Sleep(implementer.Qualification * _rnd.Next(10, 100));
			}
			catch (InvalidOperationException ex)
			{
				_logger.LogWarning(ex, "Error try get work");
			}
			catch (Exception ex)
			{
				_logger.LogError(ex, "Error while do work");
				throw;
			}
		}
		/// Обрабатываем заказ, которые в ожидании (вдруг место освободилось)
		private async Task DeliverWaitingOrder(ImplementerViewModel implementer)
		{
			if (_orderLogic == null || implementer == null)
			{
				return;
			}
			var waitingOrders = await Task.Run(() => _orderLogic.ReadList(new OrderSearchModel
			{
				ImplementerId = implementer.Id,
				Status = OrderStatus.Ожидает
			}));
			if (waitingOrders == null || waitingOrders.Count == 0)
			{
				return;
			}
			_logger.LogInformation("DeliverWaitingOrder. Find some waitig order for implementer:{id}.Count:{count}", implementer.Id, waitingOrders.Count);
			foreach (var waitingOrder in waitingOrders)
			{
				try
				{
					_logger.LogInformation("DeliverWaitingOrder. Trying to deliver order id:{id}", waitingOrder.Id);
					var res = _orderLogic.DeliveryOrder(new OrderBindingModel
					{
						Id = waitingOrder.Id
					});
				}
				catch (ArgumentException ex)
				{
					_logger.LogWarning(ex, "DeliverWaitingOrder. Fault");
				}
				catch (InvalidOperationException ex)
				{
					_logger.LogWarning(ex, "Error try deliver order");
				}
				catch (Exception ex)
				{
					_logger.LogError(ex, "Error while do work");
					throw;
				}
			}
		}
	}
}