/// <summary>
/// Get information about all submissions made to the quiz
/// </summary>
private static List <Submission> GetSubmissions()
{
List <Submission> submissions = new List <Submission>();
using (HttpClient client = CanvasHttp.MakeClient())
{
string url = String.Format("/api/v1/courses/{0}/quizzes/{1}/submissions?per_page=100", Auth.COURSE_ID, quizID);
while (url != null)
{
HttpResponseMessage response = client.GetAsync(url).Result;
if (response.IsSuccessStatusCode)
{
dynamic data = JObject.Parse(response.Content.ReadAsStringAsync().Result);
data = data.quiz_submissions;
foreach (dynamic submission in data)
{
submissions.Add(new Submission(submission));
}
}
else
{
Console.WriteLine("Error: " + response.StatusCode);
Console.WriteLine(response.ReasonPhrase.ToString());
Console.WriteLine("Unable to read course");
throw new Exception();
}
url = GetNextURL(response.Headers);
}
return(submissions);
}
}
/// <summary>
/// Returns information about all short-answer questions that appear on the quiz
/// </summary>
/// <returns></returns>
private static List <Question> GetQuestions()
{
List <Question> questions = new List <Question>();
using (HttpClient client = CanvasHttp.MakeClient())
{
string url = String.Format("/api/v1/courses/{0}/quizzes/{1}/questions?per_page=100", Auth.COURSE_ID, quizID);
while (url != null)
{
HttpResponseMessage response = client.GetAsync(url).Result;
if (response.IsSuccessStatusCode)
{
dynamic qs = JArray.Parse(response.Content.ReadAsStringAsync().Result);
foreach (dynamic question in qs)
{
if (question.question_type == "short_answer_question")
{
questions.Add(new Question(question));
}
}
}
else
{
Console.WriteLine("Error: " + response.StatusCode);
Console.WriteLine(response.ReasonPhrase.ToString());
Console.WriteLine("Unable to read question information");
throw new Exception();
}
url = GetNextURL(response.Headers);
}
return(questions);
}
}
private static List <string> GetQuizIDs(string quizName)
{
List <string> quizIDs = new List <string>();
using (HttpClient client = CanvasHttp.MakeClient())
{
string url = String.Format("/api/v1/courses/{0}/quizzes?search_term={1}&per_page=100", Auth.COURSE_ID, quizName);
while (url != null)
{
HttpResponseMessage response = client.GetAsync(url).Result;
if (response.IsSuccessStatusCode)
{
dynamic quizzes = JArray.Parse(response.Content.ReadAsStringAsync().Result);
foreach (dynamic quiz in quizzes)
{
if (quiz.title == quizName)
{
quizIDs.Add(quiz.id.ToString());
}
}
}
else
{
Console.WriteLine("Error: " + response.StatusCode);
Console.WriteLine(response.ReasonPhrase.ToString());
Console.WriteLine("Unable to read quiz information");
throw new Exception();
}
url = GetNextURL(response.Headers);
}
return(quizIDs);
}
}
private static List <KeyValuePair <string, string> > GetInputs(Submission submission, IList <Question> questions)
{
using (HttpClient client = CanvasHttp.MakeClient())
{
string url = String.Format("/courses/{0}/quizzes/{1}/history?headless=1&hide_student_name=0&score_updated=1&user_id={2}&version={3}", Auth.COURSE_ID, quizID, submission.UserId, submission.Attempt);
HttpResponseMessage response = client.GetAsync(url).Result;
if (response.IsSuccessStatusCode)
{
string page = response.Content.ReadAsStringAsync().Result;
//Console.WriteLine(page);
List <KeyValuePair <string, string> > inputs = new List <KeyValuePair <string, string> >();
int inputIndex = page.IndexOf("<input ");
while (inputIndex >= 0)
{
int nameIndex = page.IndexOf("name=\"", inputIndex) + 6;
int valueIndex = page.IndexOf("value=\"", inputIndex) + 7;
int nameQuote = page.IndexOf("\"", nameIndex);
int valueQuote = page.IndexOf("\"", valueIndex);
string name = page.Substring(nameIndex, nameQuote - nameIndex);
string value = page.Substring(valueIndex, valueQuote - valueIndex);
if (name != "answer_text")
{
inputs.Add(new KeyValuePair <string, string>(name, value));
}
inputIndex = page.IndexOf("<input ", inputIndex + 1);
}
int textIndex = page.IndexOf("<textarea ");
while (textIndex >= 0)
{
int nameIndex = page.IndexOf("name=\"", textIndex) + 6;
int valueIndex = page.IndexOf(">", textIndex) + 1;
int nameQuote = page.IndexOf("\"", nameIndex);
int valueEnd = page.IndexOf("</textarea>", valueIndex);
string name = page.Substring(nameIndex, nameQuote - nameIndex);
string value = page.Substring(valueIndex, valueEnd - valueIndex);
inputs.Add(new KeyValuePair <string, string>(name, value));
textIndex = page.IndexOf("<textarea ", textIndex + 1);
}
return(inputs);
}
else
{
Console.WriteLine("Error: " + (int)response.StatusCode);
Console.WriteLine(response.ReasonPhrase.ToString());
Console.WriteLine("Unable to read page");
throw new Exception();
}
}
}
private static AllAttempts GetAllAttempts(List <Question> questions)
{
using (HttpClient client = CanvasHttp.MakeClient())
{
string url = String.Format("/api/v1/courses/{0}/quizzes/{1}/reports", Auth.COURSE_ID, quizID);
var inputs = new Dictionary <string, string>();
inputs["quiz_report[report_type]"] = "student_analysis";
inputs["quiz_report[includes_all_versions]"] = "true";
while (true)
{
var content = new FormUrlEncodedContent(inputs);
HttpResponseMessage response = client.PostAsync(url, content).Result;
if (response.IsSuccessStatusCode)
{
dynamic qs = JObject.Parse(response.Content.ReadAsStringAsync().Result);
if (qs.file != null)
{
using (StreamReader reader = new StreamReader(WebRequest.Create(qs.file.url.ToString()).GetResponse().GetResponseStream()))
{
using (CsvReader parser = new CsvReader(reader))
{
AllAttempts attempts = new AllAttempts(parser, questions);
return(attempts);
}
}
}
else
{
Console.WriteLine("Waiting for quiz report to be generated by Canvas...");
Thread.Sleep(1000);
}
}
else if (response.StatusCode == HttpStatusCode.Conflict)
{
Console.WriteLine("Waiting for quiz report to be generated by Canvas...");
Thread.Sleep(1000);
}
else
{
Console.WriteLine("Error: " + response.StatusCode);
Console.WriteLine(response.ReasonPhrase.ToString());
Console.WriteLine("Unable to obtain quiz analysis");
throw new Exception();
}
}
}
}
private static string GetCourseName()
{
using (HttpClient client = CanvasHttp.MakeClient())
{
string url = String.Format("/api/v1/courses/{0}", Auth.COURSE_ID);
HttpResponseMessage response = client.GetAsync(url).Result;
if (response.IsSuccessStatusCode)
{
dynamic course = JObject.Parse(response.Content.ReadAsStringAsync().Result);
return(course.name);
}
else
{
Console.WriteLine("Error: " + response.StatusCode);
Console.WriteLine(response.ReasonPhrase.ToString());
Console.WriteLine("Unable to read course information");
throw new Exception();
}
}
}
/// <summary>
/// Accumulate answers given to the questions in the submission
/// </summary>
/// <param name="questions"></param>
/// <param name="answers"></param>
private static void AddAnswers(Submission submission, IList <Question> questions, Dictionary <int, SortedSet <string> > answers)
{
using (HttpClient client = CanvasHttp.MakeClient())
{
string url = String.Format("/courses/{0}/quizzes/{1}/history?headless=1&user_id={2}&version={3}", Auth.COURSE_ID, quizID, submission.UserId, submission.Attempt);
HttpResponseMessage response = client.GetAsync(url).Result;
if (response.IsSuccessStatusCode)
{
string page = response.Content.ReadAsStringAsync().Result;
foreach (Question q in questions)
{
int start = page.IndexOf("<input type=\"text\" name=\"question_" + q.Id + "\"");
start = page.IndexOf("value=\"", start) + 7;
int stop = page.IndexOf("\"", start);
String value = page.Substring(start, stop - start);
SortedSet <string> set;
if (answers.TryGetValue(q.Position, out set))
{
set.Add(value.Trim());
}
else
{
set = new SortedSet <string>();
answers[q.Position] = set;
}
}
}
else
{
Console.WriteLine("Error: " + (int)response.StatusCode);
Console.WriteLine(response.ReasonPhrase.ToString());
Console.WriteLine("Unable to read course");
return;
}
}
}
public static void SetScores()
{
// Get information about all of the short answer questions that appear on the quiz
List <Question> questions = GetQuestions();
Console.WriteLine(questions.Count + " short answer questions found");
// Get information about all submissions to the quiz
List <Submission> submissions = GetSubmissions();
Console.WriteLine(submissions.Count + " submissions found");
// Get information about attempts
AllAttempts attempts = GetAllAttempts(questions);
Console.WriteLine(attempts.Count + " attempts found");
// Read the grading rules for this quiz
GradingRules rules;
using (var input = new CsvReader(new StreamReader(@"..\..\" + GetQuizFilename())))
{
rules = new GradingRules(input);
}
Console.WriteLine(GetQuizFilename() + " is based on " + rules.Count + " attempts");
// Warn the user
int delta = attempts.Count - rules.Count;
if (delta != 0)
{
Console.WriteLine("There have " + delta + " attempts since " + GetQuizFilename() + " was created");
Console.WriteLine("You should recreate that file");
}
// Make sure we proceed
Console.Write("Update grades in Canvas? [y/n] ");
if (Console.ReadLine().Trim().ToLower() != "y")
{
return;
}
// Change the grade of attempt if necessary
foreach (Attempt attempt in attempts.GetAttempts())
{
Submission submission = GetSubmission(submissions, attempt.UserID, attempt.Number);
dynamic correction = GetCorrection(attempt, questions, rules, out string name);
if (correction == null)
{
Console.WriteLine("unchanged (v" + attempt.Number + ") " + name);
}
else if (submission == null)
{
Console.WriteLine("*MISSING* (v" + attempt.Number + ") " + name);
}
else
{
using (HttpClient client = CanvasHttp.MakeClient())
{
String url = String.Format("/api/v1/courses/{0}/quizzes/{1}/submissions/{2} ", Auth.COURSE_ID, quizID, submission.Id);
var content = new StringContent(correction.ToString(), Encoding.UTF8, "application/json");
HttpResponseMessage response = client.PutAsync(url, content).Result;
//HttpResponseMessage response = new HttpResponseMessage(HttpStatusCode.OK);
if (response.IsSuccessStatusCode)
{
Console.WriteLine("updated (v" + attempt.Number + ") " + name);
}
else
{
Console.WriteLine("*FAILED* (v" + attempt.Number + ") " + name + " " + response.StatusCode);
return;
}
}
}
}
}
/// <summary>
/// Adds a note to each student's grade
/// </summary>
public static void Main(string[] args)
{
// Get the course name
String courseName = "";
using (HttpClient client = CanvasHttp.MakeClient())
{
string url = String.Format("/api/v1/courses/{0}", Auth.COURSE_ID);
HttpResponseMessage response = client.GetAsync(url).Result;
if (response.IsSuccessStatusCode)
{
dynamic resp = JObject.Parse(response.Content.ReadAsStringAsync().Result);
courseName = resp.name;
Console.WriteLine("Labeler for " + courseName);
}
else
{
Console.WriteLine("Error: " + response.StatusCode);
Console.WriteLine(response.ReasonPhrase.ToString());
Console.WriteLine("Unable to read course");
return;
}
}
// Get the assignment ID
string assignID;
Console.Write("Enter assignment name: ");
string assignName = Console.ReadLine();
List <string> assignmentIDs = CanvasHttp.GetAssignmentIDs(assignName);
if (assignmentIDs.Count == 0)
{
Console.WriteLine("There is no assigment by that name");
return;
}
else if (assignmentIDs.Count > 1)
{
Console.WriteLine("There are " + assignmentIDs.Count + " assignments by that name");
return;
}
else
{
assignID = assignmentIDs[0];
}
// Confirm with the user
Console.WriteLine("You are about to label the submissions for " + courseName + " " + assignName + " with this message: ");
Console.WriteLine();
Console.WriteLine(message);
Console.WriteLine();
Console.WriteLine("Do you want to continue? [y/n]");
String yesno = Console.ReadLine();
if (yesno != "y")
{
return;
}
// Get the students
Dictionary <string, string> allStudents = new Dictionary <string, string>();
using (HttpClient client = CanvasHttp.MakeClient())
{
string url = String.Format("/api/v1/courses/{0}/search_users?enrollment_type[]=student&per_page=200", Auth.COURSE_ID);
while (url != null)
{
HttpResponseMessage response = client.GetAsync(url).Result;
if (response.IsSuccessStatusCode)
{
dynamic resp = JArray.Parse(response.Content.ReadAsStringAsync().Result);
foreach (dynamic user in resp)
{
allStudents[user.id.ToString()] = user.name.ToString();
//allStudents[user.sis_user_id.ToString()] = user.name.ToString();
}
url = CanvasHttp.GetNextURL(response.Headers);
}
else
{
Console.WriteLine("Error: " + response.StatusCode);
Console.WriteLine(response.ReasonPhrase.ToString());
Console.WriteLine("Unable to read users");
return;
}
}
Console.WriteLine("Student count: " + allStudents.Count);
}
// Do the labeling
foreach (string id in allStudents.Keys)
{
using (HttpClient client = CanvasHttp.MakeClient())
{
string data = "&comment[text_comment]=" + Uri.EscapeDataString(message);
string url = String.Format("/api/v1/courses/{0}/assignments/{1}/submissions/{2}", Auth.COURSE_ID, assignID, id);
//string url = String.Format("/api/v1/courses/{0}/assignments/{1}/submissions/sis_user_id:{2}", courseID, assignID, id);
StringContent content = new StringContent(data, Encoding.UTF8, "application/x-www-form-urlencoded");
HttpResponseMessage response = client.PutAsync(url, content).Result;
if (response.IsSuccessStatusCode)
{
Console.WriteLine("Success: " + allStudents[id] + " " + id);
}
else
{
Console.WriteLine("Error: " + response.StatusCode);
Console.WriteLine(response.ReasonPhrase.ToString());
Console.WriteLine(allStudents[id] + " " + id);
Console.WriteLine();
}
}
}
}