private int numClashes(ScheduledClass scheduledClass, byte[] slots)
{
var classes = new List <ScheduledClass> {
scheduledClass
}.Concat(scheduledClass.ChildClasses);
//Don't care about classes we have no choice about clashing
if (scheduledClass.OnlyChoice)
{
return(0);
}
int clashes = 0;
foreach (var childClass in classes)
{
for (int i = childClass.SlotStart; i < childClass.SlotEnd; i++)
{
if (slots[i] > 0)
{
clashes++;
break;
}
}
}
return(clashes);
}
private byte[] updateSlots(ScheduledClass scheduledClass, byte[] slots)
{
var newSlots = new byte[24 * 4 * 5];
Array.Copy(slots, newSlots, slots.Length);
//Don't care about classes we have no choice about clashing
if (scheduledClass.OnlyChoice)
{
return(newSlots);
}
var classes = new List <ScheduledClass> {
scheduledClass
}.Concat(scheduledClass.ChildClasses);
foreach (var childClass in classes)
{
for (int i = childClass.SlotStart; i < childClass.SlotEnd; i++)
{
newSlots[i]++;
}
}
return(newSlots);
}
private bool classEquivalent(ScheduledClass a, ScheduledClass b)
{
//optimising this way not worth it if there are child classes
if (a.ChildClasses.Any() || b.ChildClasses.Any())
{
return(false);
}
return(a.SlotStart == b.SlotStart && a.SlotEnd == b.SlotEnd);
}
public Timetable(List <ScheduledClass> permutation)
{
int size = permutation.Count + permutation.Sum(c => c.ChildClasses.Count);
Classes = new ScheduledClass[size];
int i = 0;
foreach (var scheduledClass in permutation)
{
Classes[i] = scheduledClass;
i++;
foreach (var childClass in scheduledClass.ChildClasses)
{
Classes[i] = childClass;
i++;
}
}
}
public Timetable(List <ScheduledClass> permutation)
{
int size = permutation.Count + permutation.Sum(c => c.ChildClasses.Count);
Classes = new ScheduledClass[size];
//Fill the classes array, including all child classes
int j = 0;
foreach (var scheduledClass in permutation)
{
Classes[j] = scheduledClass;
j++;
foreach (var childClass in scheduledClass.ChildClasses)
{
Classes[j] = childClass;
j++;
}
}
//Calculate average start time and total number of days
long startTimes = 0;
for (int i = 1; i <= 5; i++)
{
var classes = Classes.Where(c => (int)c.TimeStart.DayOfWeek == i).OrderBy(c => c.TimeStart);
if (classes.Any())
{
NumberDaysClasses++;
startTimes += classes.First().TimeStart.TimeOfDay.Ticks;
}
}
AverageStartTime = startTimes / NumberDaysClasses;
}
private async Task downloadTimetable()
{
ClassInfos = new List <ClassInfo>();
string resultStr = await getTimetableHTML(Code);
HtmlDocument doc = new HtmlDocument();
doc.LoadHtml(resultStr);
List <HtmlNode> tables = doc.DocumentNode.Descendants("table").ToList();
List <HtmlNode> rows = new List <HtmlNode>();
//We look for the first non-empty table
//This is okay as everything is filtered elsewhere (so we can ignore summer/winter/whatever)
int i = 0;
while (!rows.Any())
{
HtmlNode timesTable = tables.Skip(i++).FirstOrDefault();
if (timesTable == null)
{
return;
}
rows = timesTable.Descendants("tbody").First().Descendants("tr").ToList();
}
foreach (var row in rows)
{
try
{
var elements = row.Descendants("td").ToArray();
string date = elements[9].InnerText;
string startTime = date + " " + elements[3].InnerText;
string endTime = date + " " + elements[4].InnerText;
string[] info = elements[0].InnerText.Split('/');
var timeStart = DateTime.ParseExact(startTime, "dd MMM yyyy HH:mm", CultureInfo.InvariantCulture);
var timeEnd = DateTime.ParseExact(endTime, "dd MMM yyyy HH:mm", CultureInfo.InvariantCulture);
ScheduledClass scheduledClass = new ScheduledClass(timeStart, timeEnd)
{
Location = elements[7].InnerText,
ClassNumber = short.Parse(info[5])
};
//Don't include Breakout classses, they're useless
if (info[4].Contains("Breakout"))
{
continue;
}
var classInfo = ClassInfos.FirstOrDefault(c => c.ClassType == info[4]);
if (classInfo != null)
{
scheduledClass.ClassInfo = classInfo;
classInfo.ScheduledClasses.Add(scheduledClass);
}
else
{
classInfo = new ClassInfo
{
ClassName = elements[1].InnerText,
ScheduledClasses = new List <ScheduledClass> {
scheduledClass
},
ParentSubject = this,
ClassType = info[4]
};
scheduledClass.ClassInfo = classInfo;
ClassInfos.Add(classInfo);
}
}
catch (Exception)//Sadly can't trust timetable to be in correct format
{ }
}
}
public async Task UpdateTimetable()
{
ClassInfos = new List <ClassInfo>();
string resultStr = await getTimetableHTML(Code);
HtmlDocument doc = new HtmlDocument();
doc.LoadHtml(resultStr);
var tables = doc.DocumentNode.Descendants("table");
IEnumerable <HtmlNode> rows = new List <HtmlNode>();
//We look for the first non-empty table
//This is okay as everything is filtered elsewhere (so we can ignore summer/winter/whatever)
int i = 0;
while (!rows.Any())
{
HtmlNode timesTable = tables.Skip(i).FirstOrDefault();
if (timesTable == null)
{
return;
}
rows = timesTable.Descendants("tbody").First().Descendants("tr");
i++;
}
foreach (var row in rows)
{
try
{
var elements = row.Descendants("td").ToArray();
string date = elements[9].InnerText;
string start = date + " " + elements[3].InnerText;
string end = date + " " + elements[4].InnerText;
string[] info = elements[0].InnerText.Split('/');
var timeStart = DateTime.ParseExact(start, "dd MMM yyyy HH:mm", CultureInfo.InvariantCulture);
var timeEnd = DateTime.ParseExact(end, "dd MMM yyyy HH:mm", CultureInfo.InvariantCulture);
ScheduledClass scheduledClass = new ScheduledClass(timeStart, timeEnd)
{
Location = elements[7].InnerText,
ClassNumber = short.Parse(info[5])
};
//Don't include Breakout classses, they're useless
if (info[4].Contains("Breakout"))
{
continue;
}
var classInfo = ClassInfos.FirstOrDefault(c => c.ClassType == info[4]);
if (classInfo != null)
{
scheduledClass.ClassInfo = classInfo;
classInfo.ScheduledClasses.Add(scheduledClass);
}
else
{
classInfo = new ClassInfo
{
ClassName = elements[1].InnerText,
ScheduledClasses = new List <ScheduledClass> {
scheduledClass
},
ParentSubject = this,
ClassType = info[4]
};
scheduledClass.ClassInfo = classInfo;
ClassInfos.Add(classInfo);
}
}
catch (Exception)//Sadly can't trust timetable to be in correct format
{ }
}
//Make a copy of the originals to be used in rendering
OriginalClassInfos = new List <ClassInfo>(ClassInfos);
consolidateClasses();
//Removing equivalent classes:
foreach (var classInfo in ClassInfos)
{
var removals = new List <ScheduledClass>();//Can't remove them during enumeration, must collect to remove later
foreach (var scheduledClass in classInfo.ScheduledClasses)
{
if (removals.Contains(scheduledClass))
{
continue;
}
var equivalents = classInfo.ScheduledClasses.Where(b => classEquivalent(scheduledClass, b) && b != scheduledClass);
removals.AddRange(equivalents);
}
foreach (var removal in removals)
{
classInfo.ScheduledClasses.Remove(removal);
}
}
DateTime earliestClass = DateTime.MaxValue;
foreach (var scheduledClass in AllClasses)
{
if (scheduledClass.TimeStart < earliestClass)
{
earliestClass = scheduledClass.TimeStart;
}
}
int earliestWeek = getWeekOfYear(earliestClass);
foreach (var scheduledClass in AllClasses)
{
while (getWeekOfYear(scheduledClass.TimeStart) > earliestWeek)
{
scheduledClass.TimeStart = scheduledClass.TimeStart - TimeSpan.FromDays(7);
scheduledClass.TimeEnd = scheduledClass.TimeEnd - TimeSpan.FromDays(7);
}
}
}
