using HospitalBusinessLogic.MailWorker;
using HospitalContracts.BindingModels;
using HospitalContracts.BusinessLogicsContracts;
using HospitalContracts.SearchModels;
using HospitalContracts.StoragesContracts;
using HospitalContracts.ViewModels;
using HospitalDataModels.Models;
using Microsoft.Extensions.Logging;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace HospitalBusinessLogic.BusinessLogics
{
    public class RecipesLogic : IRecipesLogic
    {
        private readonly ILogger _logger;
        private readonly IRecipesStorage _recipesStorage;
        private readonly AbstractMailWorker _mailWorker;
        private readonly IClientLogic _clientLogic;
        public RecipesLogic(ILogger<RecipesLogic> logger, IRecipesStorage recipesStorage, AbstractMailWorker mailWorker, IClientLogic clientLogic)
        {
            _logger = logger;
            _recipesStorage = recipesStorage;
            _mailWorker = mailWorker;
            _clientLogic = clientLogic;
        }

        public bool AddProcedures(RecipesSearchModel model, IProceduresModel procedure)
        {
            if (model == null)
            {
                throw new ArgumentNullException(nameof(model));
            }

            _logger.LogInformation("AddProcedure.Id:{ Id}", model.Id);
            var element = _recipesStorage.GetElement(model);

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

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

            element.RecipeProcedures[procedure.Id] = procedure;

            _recipesStorage.Update(new()
            {
                Id = element.Id,
                Dose = element.Dose,
                ModeOfApplication = element.ModeOfApplication,
                Date = element.Date,
                ClientId = element.ClientId,
                SymptomsId = element.SymptomsId,
                RecipeProcedures = element.RecipeProcedures
            });

            return true;
        }

        public bool Create(RecipesBindingModel model)
        {
            CheckModel(model);
            var result = _recipesStorage.Insert(model);

            if (result == null) { 
                _logger.LogWarning("Insert operation failed");
                return false;
            }
            SendRecipeMessage(result.ClientId, $"Поликлиника \"Вы больны\", Рецепт №{result.Id}", $"Рецепт №{result.Id} созданный {result.Date} с дозировкой {result.Dose} и способом применения {result.ModeOfApplication} добавлен");
            return true;
        }

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

        public RecipesViewModel? ReadElement(RecipesSearchModel model)
        {
            if (model == null)
            {
                throw new ArgumentNullException(nameof(model));
            }
            _logger.LogInformation("ReadElement. Id:{ Id}", model.Id);
            var element = _recipesStorage.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<RecipesViewModel>? ReadList(RecipesSearchModel? model)
        {
            _logger.LogInformation("ReadElement. Id:{ Id}", model?.Id);
            var list = model == null ? _recipesStorage.GetFullList() : _recipesStorage.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(RecipesBindingModel model)
        {
            CheckModel(model);
            if (_recipesStorage.Update(model) == null)
            {
                _logger.LogWarning("Update operation failed");
                return false;
            }
            return true;
        }

        private void CheckModel(RecipesBindingModel model, bool withParams = true)
        {
            if (model == null)
            {
                throw new ArgumentNullException(nameof(model));
            }
            if (!withParams)
            {
                return;
            }
            if (model.SymptomsId < 0)
            {
                throw new ArgumentNullException("Некорректный идентификатор симптома", nameof(model.SymptomsId));
            }
            if (string.IsNullOrEmpty(model.Dose))
            {
                throw new ArgumentNullException("В рецепте нет дозировки", nameof(model.Dose));
            }
            if (string.IsNullOrEmpty(model.ModeOfApplication))
            {
                throw new ArgumentNullException("Нет способа приема", nameof(model.ModeOfApplication));
            }
            _logger.LogInformation("Recipes.RecipesId:{Id}.Dose:{ Dose}.ModeOfApplication:{ ModeOfApplication}. MedicineId: { MedicineId}", model.Id, model.Dose, model.ModeOfApplication, model.SymptomsId);
        }

        private bool SendRecipeMessage(int clientId, string subject, string text)
        {
            var client = _clientLogic.ReadElement(new() { Id = clientId });

            if (client == null)
            {
                return false;
            }

            _mailWorker.MailSendAsync(new()
            {
                MailAddress = client.Email,
                Subject = subject,
                Text = text
            });

            return true;
        }
    }
}