public async Task <List <Item> > GetItemContentsAsync(int item_id, ScheduleCategory category)
{
//Get the document containing wanted items
string url = $@"https://plan.polsl.pl/left_menu_feed.php?type={(int)category}&branch={item_id}";
HtmlDocument doc = await GetDocument(url, Encoding.UTF8);
//Get items with no specific schedule as HTMLnodes
var nodes = doc.DocumentNode.SelectNodes(@"//li[@class='closed']");
//If these were found then translate them to list of items and return
if (nodes != null)
{
return(NodeAnalyzer.GetItemsFromNodesWithoutSchedule(category, nodes));
}
//Otherwise find items that have a specific schedule
nodes = doc.DocumentNode.SelectNodes(@"//li");
//If these were found then translate them to list of items and return
if (nodes != null)
{
return(NodeAnalyzer.GetItemsFromNodesWithSchedule(category, nodes));
}
//If no items were found return null
return(null);
}
public async Task <List <Item> > GetMainItemsOfCategoryAsync(ScheduleCategory category)
{
List <Item> items = new List <Item>();
//Get the document with the items
string url = $@"https://plan.polsl.pl/left_menu.php?type={(int)category}";
HtmlDocument doc = await GetDocument(url, Encoding.GetEncoding("iso-8859-2"));
//Get the node with the items
var main_tree_node = doc.DocumentNode.SelectSingleNode(@"//ul[@class='main_tree']");
//Return items translated from nodes
return(NodeAnalyzer.NodesToItems(category, main_tree_node.ChildNodes));
}
public async Task <Tuple <string, List <ScheduleItem> > > GetScheduleInfoAsync(int id, ScheduleCategory category, Semester semester, CancellationToken ct)
{
//Get document with schedule
string url = $@"https://plan.polsl.pl/plan.php?type={(((int)category - 1) * 10)}&id={id}&winW=2000&winH=1000&wd={(int)semester}";
HtmlDocument doc = await GetDocument(url, Encoding.GetEncoding("iso-8859-2"));
//Check if task is canceled and exit task if true
ct.ThrowIfCancellationRequested();
lock (_lock)
{
//Get title of the schedule
var title_node = doc.DocumentNode.SelectSingleNode(@"/html[1]/body[1]/div[3]/div[1]");
string title = title_node?.InnerText.Trim();
//Get nodes representing courses
var nodes = doc.DocumentNode.SelectNodes(@"//div[@class='coursediv']");
if (nodes == null)
{
return(new Tuple <string, List <ScheduleItem> >(title, null));
}
//Get node containing legend
var legend_node = doc.DocumentNode.SelectSingleNode(@"//div[@class='data']");
//Get legend
var legend = NodeAnalyzer.MapLegend(legend_node);
//Get appropriate schedule items depending on the category
List <ScheduleItem> items = NodeAnalyzer.GetScheduleInfoFromNodes(category, nodes);
//Map full names to abbrev of the items
foreach (var item in items)
{
var name = "";
if (!legend.TryGetValue(item.Abbrev, out name))
{
continue;
}
item.Name = name;
}
return(new Tuple <string, List <ScheduleItem> >(title, items));
}
}