using ConstructionCompanyContracts.BusinessLogicContracts;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Microsoft.Extensions.Logging;
using ConstructionCompanyContracts.StorageContracts;
using ConstructionCompanyContracts.ViewModels;
using ConstructionCompanyContracts.SearchModels;
using ConstructionCompanyContracts.BindingModels;

namespace ConstructionCompanyBusinessLogic.BusinessLogics
{
    public class MaterialLogic : IMaterialLogic
    {
        private readonly ILogger _logger;
        private readonly IMaterialStorage _materialStorage;

        public MaterialLogic(ILogger<MaterialLogic> logger, IMaterialStorage materialStorage)
        {
            _logger = logger;
            _materialStorage = materialStorage;
        }

        public List<MaterialViewModel>? ReadList(MaterialSearchModel? model)
        {
            _logger.LogInformation("ReadList. MaterialName:{MaterialName}. Id:{Id}", model?.MaterialName, model?.Id);
            var list = model == null ? _materialStorage.GetFullList() : _materialStorage.GetFilteredList(model);
            if (list == null)
            {
                _logger.LogWarning("ReadList return null list");
                return null;
            }
            _logger.LogInformation("ReadList. Count:{Count}", list.Count);
            return list;
        }

        public MaterialViewModel? ReadElement(MaterialSearchModel model)
        {
            if (model == null)
            {
                throw new ArgumentNullException(nameof(model));
            }
            _logger.LogInformation("ReadElement. MaterialName:{MaterialName}. Id:{Id}", model.MaterialName, model.Id);
            var element = _materialStorage.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(MaterialBindingModel model)
        {
            CheckModel(model);
            if (_materialStorage.Insert(model) == null)
            {
                _logger.LogWarning("Insert operation failed");
                return false;
            }
            return true;
        }

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

        private void CheckModel(MaterialBindingModel model, bool withParams = true)
        {
            if (model == null)
            {
                throw new ArgumentNullException(nameof(model));
            }
            if (!withParams)
            {
                return;
            }
            if (string.IsNullOrEmpty(model.MaterialName))
            {
                throw new ArgumentNullException("Нет названия материала", nameof(model.MaterialName));
            }
            if (model.Quantity < 0)
            {
                throw new ArgumentNullException("Колчество материалов должна быть не меньше 0", nameof(model.Quantity));
            }
            _logger.LogInformation("Material. IngredietnName:{MaterialName}. Quantity:{Quantity}. Id:{Id}", model.MaterialName, model.Quantity, model.Id);
            var element = _materialStorage.GetElement(new MaterialSearchModel
            {
                MaterialName = model.MaterialName
            });
            if (element != null && element.Id != model.Id)
            {
                throw new InvalidOperationException("Материал с таким названием уже есть");
            }
        }
    }
}