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

namespace PrecastConcretePlantBusinessLogic.BusinessLogics
{
    public class ReinforcedLogic : IReinforcedLogic
    {
        private readonly ILogger _logger;

        private readonly IReinforcedStorage _reinforcedStorage;

        public ReinforcedLogic(ILogger<ReinforcedLogic> logger, IReinforcedStorage reinforcedStorage)
        {
            _logger = logger;
            _reinforcedStorage = reinforcedStorage;
        }

        public List<ReinforcedViewModel>? ReadList(ReinforcedSearchModel? model)
        {
            _logger.LogInformation("ReadList. ReinforcedName: {ReinforcedName}. Id: {Id}", model?.ReinforcedName, model?.Id);
            var list = model == null ? _reinforcedStorage.GetFullList() : _reinforcedStorage.GetFilteredList(model);
            if (list == null)
            {
                _logger.LogWarning("ReadList return null list");
                return null;
            }
            _logger.LogInformation("ReadList. Count: {Count}", list.Count);
            return list;
        }

        public ReinforcedViewModel? ReadElement(ReinforcedSearchModel model)
        {
            if (model == null)
            {
                throw new ArgumentNullException(nameof(model));
            }
            _logger.LogInformation("ReadElement. ReinforcedName: {ReinforcedName}. Id: {Id}", model.ReinforcedName, model.Id);
            var element = _reinforcedStorage.GetElement(model);
            if (element == null)
            {
                _logger.LogWarning("ReadElement element not found");
                return null;
            }
            _logger.LogInformation("ReadElement find. Id: {Id}", element.Id);
            return element;
        }

        public bool Create(ReinforcedBindingModel model)
        {
            CheckModel(model);
            if (_reinforcedStorage.Insert(model) == null)
            {
                _logger.LogWarning("Insert operation failed");
                return false;
            }
            return true;
        }

        public bool Update(ReinforcedBindingModel model)
        {
            CheckModel(model);
            if (_reinforcedStorage.Update(model) == null)
            {
                _logger.LogWarning("Update operation failed");
                return false;
            }
            return true;
        }

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

        private void CheckModel(ReinforcedBindingModel model, bool withParams = true)
        {
            if (model == null)
            {
                throw new ArgumentNullException(nameof(model));
            }
            if (!withParams)
            {
                return;
            }
            if (string.IsNullOrEmpty(model.ReinforcedName))
            {
                throw new ArgumentNullException("Нет названия изделия", nameof(model.ReinforcedName));
            }
            if (model.Price <= 0)
            {
                throw new ArgumentNullException("Цена изделия должна быть больше 0", nameof(model.Price));
            }
            if (model.ReinforcedComponents == null || model.ReinforcedComponents.Count == 0)
            {
                throw new ArgumentNullException("Изделие должно состоять хотя бы из одного компонента");
            }
            _logger.LogInformation("Reinforced. ReinforcedName: {ReinforcedName}. Price: {Price}. Id: {Id}", model.ReinforcedName, model.Price, model.Id);
            var element = _reinforcedStorage.GetElement(new ReinforcedSearchModel
            {
                ReinforcedName = model.ReinforcedName
            });
            if (element != null && element.Id != model.Id)
            {
                throw new InvalidOperationException("Изделие с таким названием уже есть");
            }
        }
    }
}