using LawFirmContracts.BindingModels;
using LawFirmContracts.BusinessLogicContracts;
using LawFirmContracts.SearchModels;
using LawFirmContracts.StoragesContracts;
using LawFirmContracts.ViewModels;
using Microsoft.Extensions.Logging;

namespace LawFirmBusinessLogic.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 Delete(ClientBindingModel model)
        {
            CheckModel(model, false);
            _logger.LogInformation("Delete. Id:{Id}", model.Id);
            if (_clientStorage.Delete(model) == null)
            {
                _logger.LogWarning("Delete operation failed");
                return false;
            }
            return true;
        }

        public List<ClientViewModel>? ReadCaseElementList(CaseSearchModel? model)
        {
            if (model == null)
            {
                return null;
            }
            var list = _clientStorage.GetClientCaseList(model);
            if (list == null)
            {
                _logger.LogWarning("ReadList return null list");
                return null;
            }
            _logger.LogInformation("ReadList. Count:{Count}", list.Count);
            return list;
        }

        public List<ClientViewModel>? ReadVisitElementList(VisitSearchModel? model)
        {
            if (model == null)
            {
                return null;
            }
            var list = _clientStorage.GetClientVisitList(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. ClientName:{FIO}. Id:{Id}", model.FIO, model.Id);
            var element = _clientStorage.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<ClientViewModel>? ReadList(ClientSearchModel? model)
        {
            _logger.LogInformation("ReadList. ClientName:{ClientName}.Id:{Id}", model?.FIO, model?.Id);
            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 bool Update(ClientBindingModel model)
        {
            CheckModel(model);
            if (_clientStorage.Update(model) == null)
            {
                _logger.LogWarning("Update operation failed");
                return false;
            }
            return true;
        }
        private void CheckModel(ClientBindingModel model, bool withParams = true)
        {
            if (model == null)
            {
                throw new ArgumentNullException(nameof(model));
            }
            if (!withParams)
            {
                return;
            }
            if (string.IsNullOrEmpty(model.FIO))
            {
                throw new ArgumentNullException("Нет имени клиента", nameof(model.FIO));
            }
            if (string.IsNullOrEmpty(model.Email))
            {
                throw new ArgumentNullException("Нет e-mail клиента", nameof(model.Email));
            }
            if (string.IsNullOrEmpty(model.Phone))
            {
                throw new ArgumentNullException("Нет телефона клиента", nameof(model.Phone));
            }

            _logger.LogInformation("Client. ClientName:{FIO}. E-mail:{Email}. Phone: {Phone} Id: {Id} ", model.FIO, model.Email, model.Phone, model.Id);
            var element = _clientStorage.GetElement(new ClientSearchModel
            {
                FIO = model.FIO,
                Phone = model.Phone,
                Email = model.Email,
            });
            if (element != null && element.Id != model.Id)
            {
                throw new InvalidOperationException("Клиент с такими данными уже есть");
            }
        }
    }
}