using Microsoft.Extensions.Logging;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using TaskTrackerContracts.BindingModels;
using TaskTrackerContracts.BusinessLogicContracts;
using TaskTrackerContracts.SearchModels;
using TaskTrackerContracts.StoragesContracts;
using TaskTrackerContracts.ViewModels;

namespace TaskTrackerBusinessLogic
{
	public class TaskLogic : ITaskLogic
	{
		private readonly ILogger _logger;
		private readonly ITaskStorage _taskStorage;
		public TaskLogic(ILogger<TaskLogic> logger, ITaskStorage
	   taskStorage)
		{
			_logger = logger;
			_taskStorage = taskStorage;
		}
		public List<TaskViewModel>? ReadList(TaskSearchModel? model)
		{
			_logger.LogInformation("ReadList. TaskName:{TaskName}.Id:{ Id}", model?.Name, model?.Id);
			var list = model == null ? _taskStorage.GetFullList() :
	_taskStorage.GetFilteredList(model);
			if (list == null)
			{
				_logger.LogWarning("ReadList return null list");
				return null;
			}
			_logger.LogInformation("ReadList. Count:{Count}", list.Count);
			return list;
		}
		public List<TaskViewModel>? ReportTask(TaskSearchModel? model, ProjectSearchModel modelS)
		{
			
			return _taskStorage.GetTaskListDate(new TaskSearchModel
			{
				DateFrom = model.DateFrom,
				DateTo = model.DateTo
			}, new ProjectSearchModel
			{
				CompanyId = modelS.CompanyId
			}) ;
			
			
		}
		public TaskViewModel? ReadElement(TaskSearchModel model)
		{
			if (model == null)
			{
				throw new ArgumentNullException(nameof(model));
			}
			_logger.LogInformation("ReadElement. TaskName:{TaskName}. Id:{ Id}", model.Name, model.Id);
			var element = _taskStorage.GetElement(model);
			if (element == null)
			{
				_logger.LogWarning("ReadElement element not found");
				return null;
			}
			_logger.LogInformation("ReadElement find. Id:{Id}", element.Id);
			return element;
		}
		public bool Create(TaskBindingModel model)
		{
			CheckModel(model);
			if (_taskStorage.Insert(model) == null)
			{
				_logger.LogWarning("Insert operation failed");
				return false;
			}
			
			model.Status = "Создано";
			model.DateCreate = DateTime.Now;
			return true;

		}
		public bool Update(TaskBindingModel model)
		{
			CheckModel(model);
			if (_taskStorage.Update(model) == null)
			{
				_logger.LogWarning("Update operation failed");
				return false;
			}
			if (model.Status.Equals("Завершено"))
			{
				model.DateDone = DateTime.Now;
				
			}
			return true;
		}
		public bool Delete(TaskBindingModel model)
		{
			CheckModel(model, false);
			_logger.LogInformation("Delete. Id:{Id}", model.Id);
			if (_taskStorage.Delete(model) == null)
			{
				_logger.LogWarning("Delete operation failed");
				return false;
			}
			return true;
		}
		private void CheckModel(TaskBindingModel model, bool withParams =
	   true)
		{
			if (model == null)
			{
				throw new ArgumentNullException(nameof(model));
			}
			if (!withParams)
			{
				return;
			}
			if (string.IsNullOrEmpty(model.Name))
			{
				throw new ArgumentNullException("Нет названия компонента",
			   nameof(model.Name));
			}
			
			_logger.LogInformation("Task. TaskName:{TaskName}. Id: { Id}  ", model.Name,  model.Id);
			var element = _taskStorage.GetElement(new TaskSearchModel
			{
				Name = model.Name
			});
			if (element != null && element.Id != model.Id)
			{
				throw new InvalidOperationException("Компонент с таким названием уже есть");
			}
		}
	}
}