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BodgeMaster
parent
5a37675753
commit
d5201044ec
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@ -2,144 +2,76 @@ package linux.general.hackyquizbot;
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import java.sql.Connection;
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import java.sql.DriverManager;
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import java.sql.ResultSet;
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import java.sql.SQLException;
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import java.sql.Statement;
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import java.util.ArrayList;
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public class QuizBackend {
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private static final String dbUsername = Main.getCommandLineArgument(1);
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private static final String dbPassword = Main.getCommandLineArgument(2);
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private static final String dbName = "jdbc:mariadb://localhost:3306/quizbot"; //we can make this configurable later
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private static final String dbName = "jdbc:mariadb://localhost/quizbot"; //we can make this configurable later
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private static Connection dbConnection;
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private static Statement statement;
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// CREATE TABLE questions(id INT(32) AUTO_INCREMENT PRIMARY KEY, question TEXT, max_score INT(8));
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// CREATE TABLE answer_coices(id INT(32), answer VARCHAR(2048), correctness BOOLEAN);
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// CREATE TABLE answer_choices(id INT(32), answer VARCHAR(2048), correctness BOOLEAN);
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// CREATE TABLE user_answers(id INT(32), given_answer VARCHAR(2048), discord_user VARCHAR(1024));
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// CREATE TABLE categories(id INT(32), category VARCHAR(1024));
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private static Question[] allQuestions;
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private static String[] categories;
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private static ArrayList<String> categories;
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static {
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try (Connection connection = DriverManager.getConnection(dbName, dbUsername, dbPassword)) {
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System.err.println("Database connected!");
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categories = new ArrayList<String>();
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try {
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dbConnection = DriverManager.getConnection(dbName, dbUsername, dbPassword);
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System.err.println("Database connected.");
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statement = dbConnection.createStatement();
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System.err.println("Statement object created.");
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// populate categories
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ResultSet resultSet = statement.executeQuery("SELECT category FROM categories;");
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while (resultSet.next()) {
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String category = resultSet.getString("category");
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if (!categories.contains(category)) {
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categories.add(category);
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}
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}
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System.err.print("Loaded categories:");
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for (int i = 0; i<categories.size(); i++) {
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System.err.print(" " + categories.get(i));
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}
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System.err.println();
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//TODO: populate allQuestions
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}
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catch (SQLException e) {
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System.err.println("Could not connect to DB.");
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System.err.println("Error while interacting with DB.");
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e.printStackTrace();
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System.exit(1);
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}
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//TODO: populate allQuestions
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//TODO: populate categories
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}
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public static String[] getCategories() {
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return categories;
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return (String[]) categories.toArray();
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}
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public static Question getRandomQuestionForCategory(String category) {
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//TODO: loop
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//TODO: pick random question
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//TODO: check if question is in category, return if it is
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return null;
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}
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public static Question getNewRandomQuestionForCategory(String discordUserID, String category) {
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//TODO: get list of previously displayed questions for that user
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//TODO: retrieve list of answers that user has given to get the question IDs from there
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//TODO: find a random question that isn’t on said list
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//TODO: add the question to said list and return it
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return null;
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}
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//TODO: user aware random question picker
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public static int getScoreForUser(String discordUserID) {
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int score = 0;
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//TODO: iterate over all questions
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//TODO: get achieved score for the user for the question
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//TODO: add to score
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return score;
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}
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//TODO: function to determine whether a user should get more questions
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//TODO: function to get a user’s score
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public static class Question {
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private String text;
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private char[] validAnswers;
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private char[] correctAnswers;
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private int scoreValue;
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private int ID;
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private ArrayList<String> categories = new ArrayList<String>();
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//TODO: get full question text with multiple choice answers
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/**
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* @param ID unique ID for the question
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* @param question The string for the question text
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* @param answers The multiple choice answers
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* @param mask A mask to be laid over answers to decide which answers are correct and which aren’t
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* @param scoreValue See getQuestionScoreValue()
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*/
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public Question(int ID, String question, String[] answers, boolean[] mask, int scoreValue) {
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//TODO: build text, valid answers and correct answers
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this.ID = ID;
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this.scoreValue = scoreValue;
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}
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//TODO: get possible answers (scrambled per user)
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//TODO: need a way to get back from the answer letter to the text answer and vice versa
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//TODO: get correct answers (scrambled per user)
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public boolean isInCategory(String category) {
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for (int i=0; i<this.categories.size(); i++) {
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if (this.categories.get(i).equals(category)) return true;
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}
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return false;
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}
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public void addCategory(String category) {
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this.categories.add(category);
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}
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/**
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* @return the full question text including multiple choice options with letters that correspond to getValidResponses()
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*/
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public String getQuestionTextWithOptions() {
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return text;
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}
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/**
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* @return a character array containing all the valid answers
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*/
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public char[] getValidResponses() {
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return this.validAnswers;
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}
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/**
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* @return a character array containing all the correct answers
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*/
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public char[] getCorrectResponses() {
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return this.correctAnswers;
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}
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/**
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* This is used to send the user’s reply back to the backend. Can be called
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* multiple times to add answers for questions with multiple possible answers.
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*
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* @param discordUserID
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* @param answer
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*/
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public void addAnswer(String discordUserID, char answer) {
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//TODO: store question ID, user ID, and the chosen answer
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}
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/**
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* Used to balance easy and difficult questions. Difficult questions will have a
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* higher value so if someone gets a bunch of them they will get less questions
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* overall.
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*
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* @return
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*/
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public int getQuestionScoreValue() {
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return this.scoreValue;
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}
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public int getAchievedScore(String discordUserID) {
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//TODO: retrieve given answers by user ID and question ID
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//TODO: calculate score
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return 0;
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}
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//TODO: submit answer
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}
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}
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