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

namespace ConstructionCompanyBusinessLogic.BusinessLogics
{
    public class EmployeeOrderLogic : IEmployeeOrderLogic
    {
        private readonly ILogger _logger;
        private readonly IEmployeeOrderStorage _employeeOrderStorage;

        public EmployeeOrderLogic(ILogger<EmployeeOrderLogic> logger, IEmployeeOrderStorage employeeOrderStorage)
        {
            _logger = logger;
            _employeeOrderStorage = employeeOrderStorage;
        }

        public List<EmployeeOrderViewModel>? ReadList(EmployeeOrderSearchModel? model)
        {
            _logger.LogInformation("ReadList. EmployeeId:{EmployeeId}. OrderId:{OrderId}", model?.EmployeeId, model?.OrderId);
            var list = model == null ? _employeeOrderStorage.GetFullList() : _employeeOrderStorage.GetFilteredList(model);
            if (list == null)
            {
                _logger.LogWarning("ReadList return null list");
                return null;
            }
            _logger.LogInformation("ReadList. Count:{Count}", list.Count);
            return list;
        }

        public EmployeeOrderViewModel? ReadElement(EmployeeOrderSearchModel model)
        {
            if (model == null)
            {
                throw new ArgumentNullException(nameof(model));
            }
            _logger.LogInformation("ReadList. EmployeeId:{EmployeeId}. OrderId:{OrderId}", model?.EmployeeId, model?.OrderId);
            var element = _employeeOrderStorage.GetElement(model);
            if (element == null)
            {
                _logger.LogWarning("ReadElement element not found");
                return null;
            }
            _logger.LogInformation("ReadElement find. EmployeeId:{EmployeeId}. OrderId:{OrderId}", model?.EmployeeId, model?.OrderId);
            return element;
        }

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

        public bool Delete(EmployeeOrderBindingModel model)
        {
            CheckModel(model, false);
            _logger.LogInformation("Delete. EmployeeId:{EmployeeId}. OrderId:{OrderId}", model?.EmployeeId, model?.OrderId);
            if (_employeeOrderStorage.Delete(model) == null)
            {
                _logger.LogWarning("Delete operation failed");
                return false;
            }
            return true;
        }

        private void CheckModel(EmployeeOrderBindingModel model, bool withParams = true)
        {
            if (model == null)
            {
                throw new ArgumentNullException(nameof(model));
            }
            if (!withParams)
            {
                return;
            }
            _logger.LogInformation("EmployeeOrder. EmployeeId:{EmployeeId}. OrderId:{OrderId}", model?.EmployeeId, model?.OrderId);
        }
    }
}