/// <summary>
/// Checks if any of the suppliers has Article in specified price range in stock
/// </summary>
/// <param name="id">Id of the article</param>
/// <param name="maxExpectedPrice">Max price of the Article</param>
/// <param name="suppliers">List of suppliers available</param>
/// <param name="index">recursion index</param>
/// <returns>Article if found, null if not existing</returns>
private Article FindArticle(int id, int maxExpectedPrice, ISupplier[] suppliers, int index = 0)
{
if (suppliers.Length == index)
{
logger.Debug("No more suppliers to check");
return(null);
}
ISupplier supplier = suppliers[index];
logger.Debug($"Checking supplier [Name = {supplier.ToString()}]");
var articleExists = supplier.ArticleInInventory(id);
if (articleExists)
{
Article tempArticle = supplier.GetArticle(id);
if (maxExpectedPrice >= tempArticle.ArticlePrice)
{
return(tempArticle);
}
}
logger.Debug($"Supplier [Name = {supplier.ToString()}]: Article not found, searching at another supplier");
return(FindArticle(id, maxExpectedPrice, suppliers, index + 1));
}
public void SellArticle(ISupplier supplier, int articleId, int buyerId)
{
Article article = supplier.GetArticle(articleId);
if (article.ID == -1)
{
throw new NullReferenceException("It's not allowed to sell empty articles!");
}
article.IsSold = true;
article.SoldDate = DateTime.Now;
article.BuyerUserID = buyerId;
_logger.WriteMessage(LogLevelConsts.DEBUG, String.Format("Trying to sell article with ID: {0}, from supplier: '{1}'", article.ID, supplier.ToString()));
try
{
_databaseDriver.SaveArticle(article);
_logger.WriteMessage(LogLevelConsts.INFO, String.Format("Article with ID: {0} is sold. Supplier is: '{1}'", article.ID, supplier.ToString()));
}
catch (NullReferenceException ex)
{
_logger.WriteMessage(LogLevelConsts.ERROR, String.Format("Could not save article with ID: {0}.", article.ID));
throw new Exception(String.Format("Could not save article with ID: {0}. \n Message: {1}", article.ID, ex.Message));
}
}
public Article Order(int id, int maxExpectedPrice)
{
if (_supplier.ArticleInInventory(id))
{
Article article = _supplier.GetArticle(id);
if (article.ArticlePrice < maxExpectedPrice)
{
article.SupplierId = _supplier.Id;
return(article);
}
}
return(Successor.Order(id, maxExpectedPrice));
}
