public async Task <ActionResult <TeacherStatistics> > GetTeacherStatistics(Guid teacherId, int timeStamps)
{
double averageMark;
try
{
averageMark = await m_analyzer.GetTeacherAverageMark(teacherId);
}
catch (InvalidDataException)
{
averageMark = 0;
}
List <DateMark> averageMarks;
try
{
averageMarks = await m_analyzer.GetTeacherAverageMarks(teacherId, timeStamps);
}
catch (InvalidDataException)
{
averageMarks = new List <DateMark>();
}
double levelOfDifficulty;
try
{
levelOfDifficulty = await m_analyzer.GetTeacherAverageLevelOfDifficulty(teacherId);
}
catch (InvalidDataException)
{
levelOfDifficulty = 0;
}
double wouldTakeAgainRatio;
try
{
wouldTakeAgainRatio = await m_analyzer.GetTeacherWouldTakeTeacherAgainRatio(teacherId);
}
catch (InvalidDataException)
{
wouldTakeAgainRatio = 0;
}
var teacherStatistic = new TeacherStatistics
{
Id = Guid.NewGuid(),
TeacherId = teacherId,
AverageMark = averageMark,
AverageMarks = averageMarks,
AverageLevelOfDifficulty = levelOfDifficulty,
WouldTakeAgainRatio = wouldTakeAgainRatio
};
return(teacherStatistic);
}
private async Task <TeacherLeaderboardEntry> GetTeacherEntryAsync(Guid teacherId)
{
var globalRatingCount = await m_teacherAnalyzer.GetTeacherRatingCount(teacherId);
if (globalRatingCount < m_minimumRatings)
{
return(null);
}
var entry = await m_context.TeacherLeaderboard.FindAsync(teacherId) ??
new TeacherLeaderboardEntry
{
TeacherId = teacherId,
};
entry.AllTimeRatingCount = globalRatingCount;
try
{
entry.AllTimeAverage = await m_teacherAnalyzer.GetTeacherAverageMark(teacherId);
}
catch (InvalidDataException e)
{
if (e.Message.Equals("Teacher has no ratings."))
{
entry.AllTimeAverage = 0;
}
}
entry.ThisYearRatingCount = await m_teacherAnalyzer.GetTeacherRatingCount(teacherId, new DateTime(m_currentYear, 9, 1));
try
{
entry.ThisYearAverage = await m_teacherAnalyzer.GetTeacherAverageMarkInYear(teacherId, m_currentYear);
}
catch (InvalidDataException e)
{
if (e.Message.Equals("Teacher has no ratings."))
{
entry.ThisYearAverage = 0;
}
}
var globalPositiveReviews = await m_teacherAnalyzer.GetTeacherPositiveRatingCount(teacherId);
var yearlyPositiveReviews = await m_teacherAnalyzer.GetTeacherPositiveRatingCountInYear(teacherId, m_currentYear);
entry.AllTimeScore = GetScore(entry.AllTimeAverage, entry.AllTimeRatingCount, globalPositiveReviews);
entry.ThisYearScore = GetScore(entry.ThisYearAverage, entry.ThisYearRatingCount, yearlyPositiveReviews);
return(entry);
}