private static ToplistBlock ConvertXElementToBlock(XElement xmlBlock)
{
xmlBlock.ThrowIfNull(nameof(xmlBlock));
string title = XDocumentParser.GetAttributeValue(xmlBlock, nameof(ToplistBlock.Title));
int number = XDocumentParser.GetAttributeValue <int>(xmlBlock,
nameof(ToplistBlock.Number));
XElement?itemsXml = XDocumentParser.FindSubelement(xmlBlock,
nameof(ToplistBlock.Items));
if (itemsXml is null)
{
throw new ArgumentException(
"Invalid strcuture of XML document: cannot find toplist items block.",
nameof(xmlBlock)
);
}
var result = new ToplistBlock(title, number);
result.UpdateItems(
XDocumentParser.FindSubelements(itemsXml)
.Select(xmlItem => ConvertXElementToItem(xmlItem, result))
.ToList()
);
return(result);
}
internal IReadOnlyList <ToplistBlock> ConvertXElementsToBlocks()
{
IReadOnlyList <XElement> xmlBlocks = XDocumentParser.FindSubelements(Blocks).ToList();
var blocks = new List <ToplistBlock>(xmlBlocks.Count);
foreach (XElement xmlBlock in xmlBlocks)
{
blocks.Add(ConvertXElementToBlock(xmlBlock));
}
return(blocks);
}