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

namespace CarCenterBusinessLogic.BusinessLogics
{
    public class BossLogic : IBossLogic
    {
        private readonly ILogger _logger;
        private readonly IBossStorage _BossStorage;

        public BossLogic(ILogger<BossLogic> logger, IBossStorage BossStorage)
        {
            _logger = logger;
            _BossStorage = BossStorage;
        }
        public List<BossViewModel>? ReadList(BossSearchModel? model)
        {
            _logger.LogInformation("ReadList. Id:{ Id}", model?.Id);
            var list = model == null ? _BossStorage.GetFullList() : _BossStorage.GetFilteredList(model);
            if (list == null)
            {
                _logger.LogWarning("ReadList return null list");
                return null;
            }
            _logger.LogInformation("ReadList. Count:{Count}", list.Count);
            return list;
        }
        public BossViewModel? ReadElement(BossSearchModel model)
        {
            if (model == null)
            {
                throw new ArgumentNullException(nameof(model));
            }
            _logger.LogInformation("ReadElement. Id:{ Id}. Login: { Login}", model.Id, model.Login);
            var element = _BossStorage.GetElement(model);
            if (element == null)
            {
                _logger.LogWarning("ReadElement element not found");
                return null;
            }
            _logger.LogInformation("ReadElement find. Id:{Id}. Login: { Login}", element.Id);
            return element;
        }
        public bool Create(BossBindingModel model)
        {
            CheckModel(model);
            if (_BossStorage.Insert(model) == null)
            {
                _logger.LogWarning("Insert operation failed");
                return false;
            }
            return true;
        }

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

        private void CheckModel(BossBindingModel model, bool withParams = true)
        {
            if (model == null)
            {
                throw new ArgumentNullException(nameof(model));
            }
            if (!withParams)
            {
                return;
            }
            if (string.IsNullOrEmpty(model.Name))
            {
                throw new ArgumentNullException("Нет имени начальника!", nameof(model.Name));
            }
            if (string.IsNullOrEmpty(model.Surname))
            {
                throw new ArgumentNullException("Нет фамилии начальника!", nameof(model.Surname));
            }
            if (string.IsNullOrEmpty(model.Login))
            {
                throw new ArgumentNullException("Нет логина начальника!", nameof(model.Login));
            }
            if (string.IsNullOrEmpty(model.Password))
            {
                throw new ArgumentNullException("Нет пароля начальника!", nameof(model.Password));
            }
            _logger.LogInformation("Boss. Surname:{Surname}. Name:{Name}. Login:{Login}. Password:{Password}. Id:{Id}", model.Surname, model.Name, model.Login, model.Password, model.Id);
            var element = _BossStorage.GetElement(new BossSearchModel
            {
                Login = model.Login
            });
            if (element != null && element.Id != model.Id)
            {
                throw new InvalidOperationException("Начальник с таким логином уже есть");
            }
        }
    }
}