private List <AbstractItem> GetAllByDiscount(int discount, BiggerSmaller biggerOrSmaller, List <AbstractItem> listToGetFrom)
{
List <AbstractItem> items = listToGetFrom;
List <AbstractItem> requiredList = new List <AbstractItem>();
if (biggerOrSmaller == BiggerSmaller.Bigger)
{
for (int i = 0; i < items.Count; i++)
{
if (items[i].Discount > discount)
{
requiredList.Add(items[i]);
}
}
}
else
{
for (int i = 0; i < items.Count; i++)
{
if (items[i].Discount < discount)
{
requiredList.Add(items[i]);
}
}
}
return(requiredList);
}
private List <AbstractItem> GetAllByYear(int year, BiggerSmaller biggerOrSmaller, List <AbstractItem> listToGetFrom)
{
List <AbstractItem> items = listToGetFrom;
List <AbstractItem> requiredList = new List <AbstractItem>();
if (biggerOrSmaller == BiggerSmaller.Bigger)
{
for (int i = 0; i < items.Count; i++)
{
if (items[i].PrintDate.Year > year)
{
requiredList.Add(items[i]);
}
}
}
else
{
for (int i = 0; i < items.Count; i++)
{
if (items[i].PrintDate.Year < year)
{
requiredList.Add(items[i]);
}
}
}
return(requiredList);
}
/// <summary>
/// Search for items by given parameters, if a a paramerter is empty it will not search by the parameter.
/// </summary>
/// <param name="year"></param>
/// <param name="biggerOrSmallerYear"></param>
/// <param name="publisher"></param>
/// <param name="writer"></param>
/// <param name="genre"></param>
/// <param name="discount"></param>
/// <param name="biggerOrSmallerDisc"></param>
/// <param name="name"></param>
/// <returns></returns>
public async Task <List <AbstractItem> > SearchItems(string year, BiggerSmaller biggerOrSmallerYear, string publisher, string writer, string genre, string discount, BiggerSmaller biggerOrSmallerDisc, string name)
{
List <AbstractItem> matchingItems = new List <AbstractItem>();
bool isStarted = false;
try
{
if (year != "")
{
matchingItems = GetAllByYear(int.Parse(year), biggerOrSmallerYear, await GetAllItems());
isStarted = true;
}
if (publisher != "")
{
if (isStarted == false)
{
matchingItems = GetAllByPublisher(publisher, await GetAllItems());
isStarted = true;
}
else
{
matchingItems = GetAllByPublisher(publisher, matchingItems);
}
}
if (writer != "")
{
if (isStarted == false)
{
matchingItems = GetAllByAuther(writer, await GetAllItems());
isStarted = true;
}
else
{
matchingItems = GetAllByAuther(writer, matchingItems);
}
}
if (genre != "")
{
if (isStarted == false)
{
Genre g1 = await _genereService.GetGenre(genre);
matchingItems = GetAllByGenre(g1, await GetAllItems());
isStarted = true;
}
else
{
Genre g1 = await _genereService.GetGenre(genre);
matchingItems = GetAllByGenre(g1, matchingItems);
}
}
if (discount != "")
{
if (isStarted == false)
{
matchingItems = GetAllByDiscount(int.Parse(discount), biggerOrSmallerDisc, await GetAllItems());
isStarted = true;
}
else
{
matchingItems = GetAllByDiscount(int.Parse(discount), biggerOrSmallerDisc, matchingItems);
}
}
if (name != "")
{
if (isStarted == false)
{
matchingItems = GetAllByName(name, await GetAllItems());
isStarted = true;
}
else
{
matchingItems = GetAllByName(name, matchingItems);
}
}
}
catch (Exception e)
{
if (e is GeneralItemException ||
e is DALException)
{
await SaveToLogFile(e.ToString());
throw new BLLGeneralException("Cannot perform a search atm try again later or call a manager");
}
else
{
await SaveToLogFile(e.ToString());
throw new LibraryException("Unknown error inform a manager!");
}
}
return(matchingItems);
}
