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

namespace BankBusinessLogic.BusinessLogics
{
    public class ClientLogic : IClientLogic
    {
        private readonly ILogger _logger;
        private readonly IClientStorage _clientStorage;
        public ClientLogic(ILogger<ClientLogic> logger,
            IClientStorage clientStorage)
        {
            _logger = logger;
            _clientStorage = clientStorage;
        }
        public bool Create(ClientBindingModel model)
        {
            CheckModel(model);
            if (_clientStorage.Insert(model) == null)
            {
                _logger.LogWarning("Insert operation failed");
                return false;
            }
            return true;
        }
        public bool Update(ClientBindingModel model)
        {
            CheckModel(model);
            if (_clientStorage.Update(model) == null)
            {
                _logger.LogWarning("Update operation failed");
                return false;
            }
            return true;
        }
        public bool Delete(ClientBindingModel model)
        {
            CheckModel(model, false);
            _logger.LogInformation("Delete. Snils: {Snils}", model.Snils);
            if (_clientStorage.Delete(model) == null)
            {
                _logger.LogWarning("Delete operation failed");
                return false;
            }
            return true;
        }
        public List<ClientViewModel>? ReadList(ClientSearchModel? model)
        {
            _logger.LogInformation(
                "ReadList. ClientFullname: {ClientSurname} {ClientName} " +
                "{ClientPatronomic}. Snils: {Snils}", model?.ClientSurname,
                model?.ClientName, model?.ClientPatronymic, model?.Snils);
            var list = model == null ? _clientStorage.GetFullList() :
                _clientStorage.GetFilteredList(model);
            if (list == null)
            {
                _logger.LogWarning("ReadList return null list");
                return null;
            }
            _logger.LogInformation("ReadList. Count: {Count}", list.Count);
            return list;
        }
        public ClientViewModel? ReadElement(ClientSearchModel model)
        {
            if (model == null)
            {
                throw new ArgumentNullException(nameof(model));
            }
            _logger.LogInformation(
                "ReadElement. ClientFullname: {ClientSurname} {ClientName} " +
                "{ClientPatronomic}. Snils: {Snils}", model.ClientSurname,
                model.ClientName, model.ClientPatronymic, model.Snils);
            var element = _clientStorage.GetElement(model);
            if (element == null)
            {
                _logger.LogWarning("ReadElement element not found");
                return null;
            }
            _logger.LogInformation("ReadElement find. Snils: {Snils}",
                element.Snils);
            return element;
        }
        private void CheckModel(ClientBindingModel model,
            bool withParams = true)
        {
            if (model == null)
            {
                throw new ArgumentNullException(nameof(model));
            }
            if (!withParams)
            {
                return;
            }
            if (string.IsNullOrEmpty(model.Snils))
            {
                throw new ArgumentNullException(
                    "Отсутствует СНИЛС клиента",
                    nameof(model.Snils));
            }
            if (string.IsNullOrEmpty(model.ClientSurname))
            {
                throw new ArgumentNullException(
                    "Отсутствует фамилия клиента",
                    nameof(model.ClientSurname));
            }
            if (string.IsNullOrEmpty(model.ClientName))
            {
                throw new ArgumentNullException(
                    "Отсутствует имя клиента",
                    nameof(model.ClientName));
            }
            if (string.IsNullOrEmpty(model.ClientPatronymic))
            {
                throw new ArgumentNullException(
                    "Отсутствует отчество клиента",
                    nameof(model.ClientPatronymic));
            }
            if (string.IsNullOrEmpty(model.Phone))
            {
                throw new ArgumentNullException(
                    "Отсутствует номер телефона клиента",
                    nameof(model.Phone));
            }
            if (string.IsNullOrEmpty(model.PasswordHash))
            {
                throw new ArgumentNullException(
                    "Отсутствует пароль клиента",
                    nameof(model.PasswordHash));
            }
            if (model.WorkerId <= 0)
            {
                throw new ArgumentNullException(
                    "Идентификатор работника должен быть больше 0",
                    nameof(model.WorkerId));
            }
            _logger.LogInformation("Client. Snils: {Snils}. ClientFullname: " +
                "{ClientSurname} {ClientName} {ClientPatronymic}. Phone: " +
                "{Phone}. Email: {Email}. PasswordHash: {PasswordHash}.", 
                model.Snils, model.ClientSurname, model.ClientName, 
                model.ClientPatronymic, model.Phone, model.Email, 
                model.PasswordHash);
            var elementByEmail = _clientStorage.GetElement(
                new ClientSearchModel
                {
                    Email = model.Email,
                });
            var elementByPhone = _clientStorage.GetElement(
                new ClientSearchModel
                {
                    Phone = model.Phone,
                });
            if ((elementByEmail != null && elementByEmail.Snils != model.Snils)
                || (elementByPhone != null && elementByPhone.Snils 
                != model.Snils))
            {
                throw new InvalidOperationException("Клиент с такой почтой " +
                    "или номером телефона уже существует");
            }
        }
    }
}