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import java.io.*;
import java.util.*;
public class Quiz {
private String name;
private final ArrayList<Question> questions = new ArrayList<>();
public Quiz() {
}
public Quiz(String name) {
this.name = name;
}
public static Quiz loadFromFile(String filePath) throws FileNotFoundException, InvalidQuizFormatException {
File file = new File(filePath);
Quiz quiz = new Quiz(file.getName().split(".txt")[0]);
BufferedReader bufferedReader = new BufferedReader(new FileReader(file));
try {
while (bufferedReader.ready()) {
ArrayList<String> lines = new ArrayList<>();
while (true) {
String line = bufferedReader.readLine();
if (line != null && !line.equals("")) {
lines.add(line);
} else {
break;
}
}
if (lines.size() == 2) {
quiz.addQuestion(new FillIn(lines.get(0), lines.get(1)));
} else if (lines.size() > 2) {
quiz.addQuestion(new Test(lines.get(0), lines.get(1), lines.subList(1, lines.size()).toArray(new String[0])));
} else {
throw new InvalidQuizFormatException("No line found");
}
}
} catch (IOException ignored) {
}
return quiz;
}
public void start() {
Scanner scanner = new Scanner(System.in);
int correctAnswers = 0;
Collections.shuffle(questions);
System.out.printf("""
=======================================================
WELCOME TO "%s" QUIZ!
-------------------------------------------------------
""", name);
for (int i = 0; i < questions.size(); i++) {
Question question = questions.get(i);
if (question instanceof Test) {
String choice;
((Test) question).shuffleOptions();
System.out.printf("""
%d. %s
----------------------------
""", i + 1, question);
System.out.print("Enter the correct choice: ");
choice = scanner.next();
while (choice.length() != 1 || choice.charAt(0) < 65 || choice.charAt(0) > ((Test) question).getNumOfOptions() + 64) {
System.out.print("Invalid choice! Try again (Ex: A, B, ...): ");
choice = scanner.next();
}
if (((Test) question).isCorrectAnswer(choice.charAt(0))) {
System.out.println("Correct!");
correctAnswers++;
} else {
System.out.println("Incorrect!");
}
} else if (question instanceof FillIn) {
System.out.printf("""
%d. %s
----------------------------
""", i + 1, question);
System.out.print("Type your answer: ");
if (scanner.next().equalsIgnoreCase(question.getAnswer())) {
System.out.println("Correct!");
correctAnswers++;
} else {
System.out.println("Incorrect!");
}
}
System.out.println("-------------------------------------------------------");
}
System.out.printf("Correct Answers: %d/%d (%.1f%%)", correctAnswers, questions.size(), (double) correctAnswers / questions.size() * 100);
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public void addQuestion(Question question) {
questions.add(question);
}
@Override
public String toString() {
return "Quiz{" +
"name='" + name + '\'' +
", questions=" + questions +
'}';
}
}
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