using Microsoft.Extensions.Logging;
using SchoolContracts.BindingModels;
using SchoolContracts.BusinessLogicsContracts;
using SchoolContracts.SearchModel;
using SchoolContracts.StoragesContracts;
using SchoolContracts.ViewModels;
using SchoolDatabaseImplements.Implements;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace SchoolBusinessLogic.BusinessLogics
{
	public class ExpenseLogic : IExpenseLogic
	{
			private readonly ILogger _logger;
			private readonly IExpenseStorage _expenseStorage;
			public ExpenseLogic(ILogger<CircleExpenseLogic> logger, IExpenseStorage expenseStorage)
			{
				_logger = logger;
				_expenseStorage = expenseStorage;
			}

		public bool Create(ExpenseBindingModel model)
		{
			CheckModel(model);
			if (_expenseStorage.Insert(model) == null)
			{
				_logger.LogWarning("Insert operation failed");
				return false;
			}
			return true;
		}

		public bool Delete(ExpenseBindingModel model)
		{
			CheckModel(model, false);
			_logger.LogInformation("Delete. Id: {Id}", model.Id);
			if (_expenseStorage.Delete(model) == null)
			{
				_logger.LogWarning("Delete operation failed");
				return false;
			}
			return true;
		}

		public ExpenseViewModel? ReadElement(ExpenseSearchModel model)
		{
			if (model == null)
			{
				throw new ArgumentNullException(nameof(model));
			}
			_logger.LogInformation("ReadElement. Id: {Id}", model.Id);
			var element = _expenseStorage.GetElement(model);
			if (element == null)
			{
				_logger.LogWarning("ReadElement element not found");
				return null;
			}
			_logger.LogInformation("ReadElement found. Id: {Id}", element.Id);
			return element;
		}

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

		public bool Update(ExpenseBindingModel model)
		{
			CheckModel(model);
			if (_expenseStorage.Update(model) == null)
			{
				_logger.LogWarning("Update operation failed");
				return false;
			}
			return true;
		}
		private void CheckModel(ExpenseBindingModel model, bool withParams = true)
		{
			if (model == null)
			{
				throw new ArgumentException(nameof(model));
			}
			if (!withParams)
			{
				return;
			}
			_logger.LogInformation("Expense. Id: {Id}", model.Id);
		}
	}
}