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

namespace SoftwareBusinessLogic.Logic
{
	public class TestLogic:ITestLogic
	{
		private readonly ITestStorage _repository;

		private readonly ILogger _logger;

		public TestLogic(ITestStorage repository,ILogger<TestLogic> logger)
		{
			_repository = repository;
			_logger = logger;
		}

		public List<TestViewModel>? ReadList(TestSearchModel? model)
		{
			_logger.LogInformation("ReadList. Model: {Model}", model);

			var result = model == null
				? _repository.GetFullList()
				: _repository.GetFilteredList(model);

			if (result == null)
			{
				_logger.LogWarning("ReadList: Returned null list");
			}
			else
			{
				_logger.LogInformation("ReadList: Returned {Count} items", result.Count);
			}

			return result;
		}

		public TestViewModel? ReadElement(TestSearchModel model)
		{
			_logger.LogInformation("ReadElement. Model: {Model}", model);

			var result = _repository.GetElement(model);

			if (result == null)
			{
				_logger.LogWarning("ReadElement: Issue not found");
			}
			else
			{
				_logger.LogInformation("ReadElement: Found Issue with Id: {Id}", result.Id);
			}

			return result;
		}

		public bool Create(TestBindingModel model)
		{
			_logger.LogInformation("Create. Model: {Model}", model);

			var result = _repository.Insert(model) != null;

			if (result)
			{
				_logger.LogInformation("Create: Test successfully created");
			}
			else
			{
				_logger.LogError("Create: Failed to create Test");
			}

			return result;
		}

		public bool Update(TestBindingModel model)
		{
			_logger.LogInformation("Update. Model: {Model}", model);

			var result = _repository.Update(model) != null;

			if (result)
			{
				_logger.LogInformation("Update: Test with Id {Id} successfully updated", model.Id);
			}
			else
			{
				_logger.LogError("Update: Failed to update Test with Id {Id}", model.Id);
			}

			return result;
		}

		public bool Delete(TestBindingModel model)
		{
			_logger.LogInformation("Delete. Model: {Model}", model);

			var result = _repository.Delete(model) != null;

			if (result)
			{
				_logger.LogInformation("Delete: Test with Id {Id} successfully deleted", model.Id);
			}
			else
			{
				_logger.LogError("Delete: Failed to delete Test with Id {Id}", model.Id);
			}

			return result;
		}

		public bool FailedTest(TestBindingModel model)
		{
			_logger.LogInformation("Marking test as Failed. Test ID: {TestId}", model.Id);
			return ChangeTestStatus(model, TestStatus.Провален);
		}

		public bool SuccessTest(TestBindingModel model)
		{
			_logger.LogInformation("Marking test as Success. Test ID: {TestId}", model.Id);
			return ChangeTestStatus(model, TestStatus.Успешно);
		}

		private bool ChangeTestStatus(TestBindingModel model, TestStatus newStatus)
		{
			var orderView = _repository.GetElement(new TestSearchModel { Id = model.Id });

			if (orderView == null)
			{
				_logger.LogWarning("Test status change failed");
				return false;
			}

			model.TestStatus = newStatus;

			if (_repository.Update(model) == null)
			{
				_logger.LogWarning("Test status change failed");
				return false;
			}
			return true;
		}
		public TestStatisticsViewModel GetStatistics(DateTime from, DateTime to)
		{
			_logger.LogInformation("GetStatistics called. Date range: {From} - {To}", from, to);

			var result = _repository.GetStatistics(from, to);

			return result;
		}
	}
}