feature: Add text match/short answer question type #36 (#37)

backend/README.md

@@ -21,7 +21,7 @@ Pictures are always added to the end of the text.
 
 \* marks right answers.
 
-Supports only single choice and multiple choice/checkbox questions.
+Supports only single choice, multiple choice/checkbox and text match/short answer questions.
 
 Supports multi paragraph question descriptions. 
 
@@ -38,5 +38,9 @@ By default, Coursera DOCX will have partial credit option.
 
 Answer option need to start with letter or number followed by colon ':' or closing parenthesis ')'
 
-Correct answer should be marked with '*'. Example: "*A) answer option text". Also, multiple symbols will work: "   ** * 1: answer option text".
+Correct answer should be marked with '*'. Example: "*A) answer option text". Also multiple symbols will work: "   ** * 1:
+answer option text".
+
+Text match/short answer questions are not case-sensitive. Moodle doesn't support incorrect answers and their feedback,
+so incorrect answers will be skipped.
 

backend/src/main/java/com/quiz/converter/handlers/FeedbackHandler.java

@@ -14,8 +14,7 @@ public class FeedbackHandler {
 
     public void add(String text, ParagraphType paragraphType) {
         switch (paragraphType) {
-            case DEFAULT_FEEDBACK ->
-                    state.setDefaultFeedback(text.toLowerCase().replace("default feedback:", "").strip());
+            case DEFAULT_FEEDBACK -> state.setDefaultFeedback(text.toLowerCase().replaceAll("^\s*(default)\s*(feedback)\s*(:)", "").strip());
             case FEEDBACK -> {
                 var feedbackText = text.toLowerCase().replace("feedback", "").strip().replace(":", "").strip();
                 state.getAnswerOptions().get(state.getAnswerOptions().size() - 1).setFeedback(Optional.of(feedbackText));

backend/src/main/java/com/quiz/converter/handlers/QuestionHandler.java

@@ -58,6 +58,8 @@ public class QuestionHandler {
             state.setType(QuestionType.SINGLE_CHOICE);
         } else if (lowerCaseText.matches(".*(multiple)\s*(choice).*") || lowerCaseText.contains("checkbox")) {
             state.setType(QuestionType.MULTIPLE_CHOICE);
+        } else if (lowerCaseText.matches(".*(text)\s*(match).*") || lowerCaseText.matches(".*(short)\s*(answer).*")) {
+            state.setType(QuestionType.TEXT_MATCH);
         } else {
             state.setType(QuestionType.UNKNOWN);
         }

backend/src/main/java/com/quiz/converter/models/Question.java

@@ -8,7 +8,7 @@ import java.util.List;
 
 public record Question(
         String name,
-        String feedback,
+        String defaultFeedback,
         QuestionType type,
         QuestionDescription description,
         List<Answer> answerOptions,

backend/src/main/java/com/quiz/converter/models/enums/QuestionType.java

@@ -3,5 +3,6 @@ package com.quiz.converter.models.enums;
 public enum QuestionType {
     SINGLE_CHOICE,
     MULTIPLE_CHOICE,
+    TEXT_MATCH,
     UNKNOWN
 }

backend/src/main/java/com/quiz/converter/services/CourseraDocxCreatorService.java

@@ -26,6 +26,8 @@ public class CourseraDocxCreatorService {
             for (int i = 0; i < question.answerOptions().size(); i++) {
                 addAnswerOptions(question, i, doc);
             }
+
+            addDefaultFeedback(question, doc);
         }
 
         var bos = new ByteArrayOutputStream();
@@ -35,6 +37,14 @@ public class CourseraDocxCreatorService {
         return bos.toByteArray();
     }
 
+    private void addDefaultFeedback(Question question, XWPFDocument doc) {
+        if (!question.defaultFeedback().isEmpty()) {
+            var defaultFeedback = doc.createParagraph();
+            var defaultFeedbackRun = defaultFeedback.createRun();
+            defaultFeedbackRun.setText("Default Feedback: " + question.defaultFeedback());
+        }
+    }
+
     private static void addQuestionDescription(Question question, XWPFDocument doc) {
         for (var description : question.description().getTexts()) {
             var questionDescription = doc.createParagraph();
@@ -53,6 +63,8 @@ public class CourseraDocxCreatorService {
             questionTypeText = "single correct answer";
         } else if (question.type().equals(QuestionType.MULTIPLE_CHOICE)) {
             questionTypeText = "checkbox";
+        } else if (question.type().equals(QuestionType.TEXT_MATCH)) {
+            questionTypeText = "text match";
         }
         int questionName;
         try {

backend/src/main/java/com/quiz/converter/services/FileUploadService.java

@@ -108,7 +108,7 @@ public class FileUploadService {
 
     private Answer createAnswerFromString(String text, List<Picture> paragraphPictures) {
         var isCorrectAnswer = text.strip().matches("(\\s*\\*+\s*).*");
-        var answerText = text.strip().replaceAll("(\\s*\\**\\s*)*[a-zA-Z\\d]\\s*[:)]", "");
+        var answerText = text.strip().replaceAll("^(\\s*\\**\\s*)*[a-zA-Z\\d]\\s*[:)]", "");
         return new Answer(answerText, null, isCorrectAnswer, paragraphPictures);
     }
 }

backend/src/main/java/com/quiz/converter/services/MoodleXmlCreatorService.java

@@ -51,14 +51,16 @@ public class MoodleXmlCreatorService {
         var correctAnswerCount = (int) question.answerOptions().stream().filter(Answer::isCorrect).count();
 
         for (var answer : question.answerOptions()) {
-            addAnswer(doc, answer, questionElem, correctAnswerCount);
+            addAnswer(doc, answer, questionElem, correctAnswerCount, question.type());
         }
 
         addQuestionOptions(question, doc, questionElem);
-        addQuestionType(question, doc, questionElem);
+        if (question.type().equals(QuestionType.MULTIPLE_CHOICE) || question.type().equals(QuestionType.SINGLE_CHOICE)) {
+            addQuestionType(question, doc, questionElem);
+        }
 
-        if (!question.feedback().isEmpty()) {
-            addFeedback(doc, questionElem, question.feedback());
+        if (!question.defaultFeedback().isEmpty()) {
+            addFeedback(doc, questionElem, question.defaultFeedback());
         }
     }
 
@@ -108,14 +110,22 @@ public class MoodleXmlCreatorService {
         var type = "";
         if (question.type().equals(QuestionType.SINGLE_CHOICE) || (question.type().equals(QuestionType.MULTIPLE_CHOICE)))
             type = "multichoice";
+        else if (question.type().equals(QuestionType.TEXT_MATCH)) {
+            type = "shortanswer";
+        }
         questionElem.setAttribute("type", type);
         rootElem.appendChild(questionElem);
     }
 
-    private static void addAnswer(Document doc, Answer answer, Element questionElem, int correctAnswerCount) {
+    private static void addAnswer(Document doc, Answer answer, Element questionElem, int correctAnswerCount, QuestionType questionType) {
         var answerElem = doc.createElement("answer");
-
-        answerElem.setAttribute("fraction", answer.isCorrect() ? String.valueOf(100.0 / correctAnswerCount) : String.valueOf(-100.0 / correctAnswerCount));
+        var fraction = 0.0;
+        if (questionType.equals(QuestionType.MULTIPLE_CHOICE)) {
+            fraction = answer.isCorrect() ? 100.0 / correctAnswerCount : -100.0 / correctAnswerCount;
+        } else {
+            fraction = answer.isCorrect() ? 100 : 0;
+        }
+        answerElem.setAttribute("fraction", String.valueOf(fraction));
         answerElem.setAttribute("format", "html");
         questionElem.appendChild(answerElem);