using LawCompanyDataModels.Enums;
using LawCompanyDataModels.Models;
using LawCompanyContracts.BindingModels;
using LawCompanyContracts.BusinessLogicContracts;
using LawCompanyContracts.SearchModels;
using LawCompanyContracts.StoragesContracts;
using LawCompanyContracts.ViewModels;
using Microsoft.Extensions.Logging;

namespace LawCompanyBusinessLogic.BusinessLogics
{
	public class CaseLogic : ICaseLogic
	{
		private readonly ILogger _logger;
		private readonly ICaseStorage _caseStorage;

		public CaseLogic(ILogger<CaseLogic> logger, ICaseStorage CaseStorage)
		{
			_logger = logger;
			_caseStorage = CaseStorage;
		}

		public bool CaseAnalysis(CaseBindingModel model)
		{
			return UpdateStatus(model, CaseStatus.АнализДелаИПодготовкаДокументов);
		}

		public bool CaseHearing(CaseBindingModel model)
		{
			return UpdateStatus(model, CaseStatus.СлушанияДела);
		}

		public bool CloseCase(CaseBindingModel model)
		{
			return UpdateStatus(model, CaseStatus.ЗакрытиеДела);
		}

		public bool CreateCase(CaseBindingModel model)
		{
			CheckModel(model);

			if (model.Status != CaseStatus.Неизвестен)
			{
				_logger.LogWarning("Case status is incorrect");
				return false;
			}

			model.Status = CaseStatus.Принято;
			model.DateCreate = DateTime.Now;

			if (_caseStorage.Insert(model) == null)
			{
				model.Status = CaseStatus.Неизвестен;
				_logger.LogWarning("Insert operation failed");
				return false;
			}
			return true;
		}

		public bool DeleteCase(CaseBindingModel model)
		{
			if (_caseStorage.Delete(model) == null)
			{
				_logger.LogWarning("Delete operation failed");
				return false;
			}
			return true;
		}

		public CaseViewModel? ReadElement(CaseSearchModel model)
		{
			if (model == null)
			{
				throw new ArgumentNullException(nameof(model));
			}
			_logger.LogInformation("ReadElement. Name:{Name}. Id:{Id}", model.Name, model.Id);
			var element = _caseStorage.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 Update(CaseBindingModel model)
		{
			CheckModel(model);
			if (_caseStorage.Update(model) == null)
			{
				_logger.LogWarning("Update operation failed");
				return false;
			}
			return true;
		}

		public List<CaseViewModel>? ReadList(CaseSearchModel? model)
		{
			_logger.LogInformation("ReadList. CaseId:{Id}", model?.Id);
			var list = model == null ? _caseStorage.GetFullList() : _caseStorage.GetFilteredList(model);
			if (list == null)
			{
				_logger.LogWarning("ReadList return null list");
				return null;
			}
			_logger.LogInformation("ReadList. Count:{Count}", list.Count);
			return list;
		}

		public bool AddClientToCase(CaseSearchModel model, IClientModel client)
		{
			if (model == null)
			{
				throw new ArgumentNullException(nameof(model));
			}

			_logger.LogInformation(" CaseName:{CaseName}.Id:{Id}", model.Name, model.Id);
			var element = _caseStorage.GetElement(model);

			if (element == null)
			{

				return false;
			}
			if (element.CaseClients.ContainsKey(client.Id))
			{
				return false;
			}
			element.CaseClients[client.Id] = client;

			_caseStorage.Update(new()
			{
				Id = element.Id,
				Name = element.Name,
				DateCreate = element.DateCreate,
				Status = element.Status,
				CaseClients = element.CaseClients,
				ExecutorId = element.ExecutorId,
			});

			return true;
		}
		private void CheckModel(CaseBindingModel model, bool withParams = true)
		{
			if (model == null)
			{
				throw new ArgumentNullException(nameof(model));
			}

			if (!withParams)
			{
				return;
			}

			if (string.IsNullOrEmpty(model.Name))
			{
				throw new ArgumentNullException("Нет описания дела", nameof(model.Name));

			}

			_logger.LogInformation("Case. CaseID:{Id}, Name:{Name}.", model.Id, model.Name);
		}
		private bool UpdateStatus(CaseBindingModel model, CaseStatus newStatus)
		{
			CheckModel(model);
			if (model.Status + 1 != newStatus)
			{

				_logger.LogWarning("Status incorrected");
				return false;

			}
			model.Status = newStatus;
			if (model.Status == CaseStatus.ЗакрытиеДела)
			{
				model.DateImplement = DateTime.Now;
			}
			if (_caseStorage.Update(model) == null)
			{
				model.Status--;
				_logger.LogWarning("Update operation failed");

				return false;
			}

			return true;
		}

	}
}