using BankContracts.BindingModels;
using BankContracts.BusinessLogicsContracts;
using BankContracts.SearchModels;
using BankContracts.StoragesContracts;
using BankContracts.ViewModels;
using Microsoft.Extensions.Logging;

namespace BankBusinessLogic.BusinessLogics
{
    public class ClercLogic : IClercLogic
    {
        private readonly int _loginMaxLength = 50;
        private readonly int _passwordMaxLength = 50;
        private readonly int _passwordMinLength = 10;

        private readonly ILogger _logger;
        private readonly IClercStorage _clercStorage;

        public ClercLogic(ILogger<ClercLogic> logger, IClercStorage clercStorage)
        {
            _logger = logger;
            _clercStorage = clercStorage;
        }

        public bool Create(ClercBindingModel model)
        {
            CheckModel(model);

            if (_clercStorage.Insert(model) == null)
            {
                _logger.LogWarning("Insert operation failed");

                return false;
            }

            return true;
        }

        public bool Delete(ClercBindingModel model)
        {
            CheckModel(model, false);

            _logger.LogInformation("Delete. Id: {Id}", model.Id);

            if (_clercStorage.Delete(model) == null)
            {
                _logger.LogWarning("Delete operation failed");

                return false;
            }

            return true;
        }

        public ClercViewModel? ReadElement(ClercSearchModel model)
        {
            if (model == null)
            {
                throw new ArgumentNullException(nameof(model));
            }

            _logger.LogInformation("ReadElement. ClercFIO: {ClercFIO}. ClercLogin: {ClercLogin}. Id: {Id}.", model.ClercFIO, model.ClercLogin, model.Id);

            var element = _clercStorage.GetElement(model);

            if (element == null)
            {
                _logger.LogWarning("ReadElement element not found");
                return null;
            }

            _logger.LogInformation("ReadElement find. Id: {Id}", element.Id);

            return element;
        }

        public List<ClercViewModel>? ReadList(ClercSearchModel? model)
        {
            _logger.LogInformation("ReadList. ClercFIO: {ClercFIO}. ClercLogin: {ClercLogin}. Id: {Id}.", model?.ClercFIO, model?.ClercLogin, model?.Id);

            var list = model == null ? _clercStorage.GetFullList() : _clercStorage.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(ClercBindingModel model)
        {
            CheckModel(model);

            if (_clercStorage.Update(model) == null)
            {
                _logger.LogWarning("Update operation failed");
                return false;
            }
            return true;
        }

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

            if (!withParams)
            {
                return;
            }

            if (string.IsNullOrEmpty(model.ClercFIO))
            {
                throw new ArgumentNullException("Нет ФИО организатора", nameof(model.ClercFIO));
            }

            if (string.IsNullOrEmpty(model.ClercLogin))
            {
                throw new ArgumentNullException("Нет логина организатора", nameof(model.ClercLogin));
            }

            if (model.ClercLogin.Length>_loginMaxLength)
            {
                throw new ArgumentNullException("Логин слишком длинный", nameof(model.ClercLogin));
            }

            if (string.IsNullOrEmpty(model.ClercNumber))
            {
                throw new ArgumentNullException("Нет номера телефона организатора", nameof(model.ClercNumber));
            }

            if (string.IsNullOrEmpty(model.ClercEmail))
            {
                throw new ArgumentNullException("Нет почты организатора", nameof(model.ClercEmail));
            }

            if (string.IsNullOrEmpty(model.ClercPassword))
            {
                throw new ArgumentNullException("Нет пароля организатора", nameof(model.ClercPassword));
            }

            if (model.ClercPassword.Length < _passwordMinLength)
            {
                throw new ArgumentNullException("Пароль слишком короткий", nameof(model.ClercPassword));
            }

            if (model.ClercPassword.Length > _passwordMaxLength)
            {
                throw new ArgumentNullException("Пароль слишком длинный", nameof(model.ClercPassword));
            }

            _logger.LogInformation("Clerc. ClercFIO: {ClercFIO}. ClercLogin: {ClercLogin}. Id: {Id}", model.ClercFIO, model.ClercLogin, model.Id);

            var element = _clercStorage.GetElement(new ClercSearchModel
            {
                ClercLogin = model.ClercLogin
            });

            if (element != null && element.Id != model.Id)
            {
                throw new InvalidOperationException("Организатор с таким логином уже есть");
            }
        }
    }
}