started MySQL implementation

pom.xml

@@ -12,6 +12,12 @@
             <version>3.4.0</version>
             <type>pom</type>
         </dependency>
+        <!-- https://mvnrepository.com/artifact/org.mariadb.jdbc/mariadb-java-client -->
+        <dependency>
+            <groupId>org.mariadb.jdbc</groupId>
+            <artifactId>mariadb-java-client</artifactId>
+            <version>3.0.3</version>
+        </dependency>
     </dependencies>
     <properties>
         <maven.compiler.source>17</maven.compiler.source>

src/main/java/linux/general/hackyquizbot/Main.java

@@ -8,33 +8,42 @@ import java.util.Date;
 import java.util.Scanner;
 
 public class Main {
+	public static final String startupTime = String.format("%1$tY-%1$tm-%1$td %1$tI:%1$tM:%1$tS%1$tp UTC%1$tz", new Date());
+	private static String[] commandLineArguments;
+
 
 	public static void main(String[] args) {
-		String startupTime = String.format("%1$tY-%1$tm-%1$td %1$tI:%1$tM:%1$tS%1$tp UTC%1$tz", new Date());
+		// [0] token, [1] db username, [2] db password
+		commandLineArguments = args;
 		
-		// Insert your bot's token here
+		// CREATE TABLE questions(id INT(32) AUTO_INCREMENT PRIMARY KEY, question TEXT, max_score INT(8));
-		String token = args[0];
+		// CREATE TABLE answer_coices(id INT(32), answer VARCHAR(2048), correctness BOOLEAN);
+		// CREATE TABLE user_answers(id INT(32), given_answer VARCHAR(2048), discord_user VARCHAR(1024));
+		// CREATE TABLE categories(id INT(32), category VARCHAR(1024));
 
+		// checks every 7500 ms if a deployment happened, if so shuts down the bot
 		CheckDeploy check = new CheckDeploy(7500, "/var/www/deployment/Hacky-Quizbot/id.txt");
 		check.start();
 
-		DiscordApi api = new DiscordApiBuilder().setToken(token).login().join();
+		DiscordApi api = new DiscordApiBuilder().setToken(commandLineArguments[0]).login().join();
 		
 		//Trivia management
 		Member member = new Member(api);
 
-		// Add a listener which answers with "Pong!" if someone writes "!ping"
+		// small status command
 		api.addMessageCreateListener(event -> {
 			if (event.getMessageContent().equalsIgnoreCase("!ping")) {
 				event.getChannel().sendMessage("Pong!\nHacky the quiz bot has been running since "+startupTime);
 			}
 		});
 
-		// Print the invite url of your bot
+	}
-		System.out.println("You can invite the bot by using the following url: " + api.createBotInvite());
+	
-
+	public static String getCommandLineArgument(int index) {
+		return commandLineArguments[index];
 	}
 
+	//Deploy check thread
 	public static class CheckDeploy extends Thread {
 		private int interval;
 		private String id;

src/main/java/linux/general/hackyquizbot/Member.java

@@ -2,7 +2,9 @@ package linux.general.hackyquizbot;
 
 import org.javacord.api.DiscordApi;
 import org.javacord.api.entity.user.User;
+import org.javacord.api.entity.message.embed.EmbedBuilder;
 
+//TODO: find a better name for this class
 public class Member {
 	private DiscordApi api;
 	private User user;
@@ -14,10 +16,23 @@ public class Member {
 			if(event.getMessageContent().equalsIgnoreCase("!trivia")) {
 				if(event.getMessageAuthor().asUser().isPresent()) {
 					this.user = event.getMessageAuthor().asUser().get();
-					
+					this.user.sendMessage("Hi! I'm Hacky! **Fuck you**! :D");
-					this.user.sendMessage("Welcome to hell");
 				}
 			}
 		});
 	}
+	
+	public void sendMessage(String question, String[] options) {
+		String desc = new String();
+		
+		for(String option: options) {
+			desc += option + "\n";
+		}
+		
+		EmbedBuilder embed = new EmbedBuilder()
+				.setTitle(question)
+				.setDescription(desc);
+		
+		this.user.sendMessage(embed);
+	}
 }

src/main/java/linux/general/hackyquizbot/QuizBackend.java

@@ -0,0 +1,140 @@
+package linux.general.hackyquizbot;
+
+import java.sql.Connection;
+import java.sql.DriverManager;
+import java.sql.SQLException;
+import java.util.ArrayList;
+
+public class QuizBackend {
+
+	private static final String dbUsername = Main.getCommandLineArgument(1);
+	private static final String dbPassword = Main.getCommandLineArgument(2);
+	private static final String dbName = "jdbc:mysql://localhost:3306/quizbot"; //we can make this configurable later
+
+	private static Question[] allQuestions;
+	private static String[] categories;
+	
+	static {
+		try (Connection connection = DriverManager.getConnection(dbName, dbUsername, dbPassword)) {
+		    System.out.println("Database connected!");
+		}
+		catch (SQLException e) {
+			System.err.println("Could not connect to DB.");
+			e.printStackTrace();
+		}
+		//TODO: populate allQuestions
+		//TODO: populate categories
+	}
+	
+	public static String[] getCategories() {
+		return categories;
+	}
+
+	public static Question getRandomQuestionForCategory(String category) {
+		//TODO: loop
+			//TODO: pick random question
+			//TODO: check if question is in category, return if it is
+		return null;
+	}
+	
+	public static Question getNewRandomQuestionForCategory(String discordUserID, String category) {
+		//TODO: get list of previously displayed questions for that user
+			//TODO: retrieve list of answers that user has given to get the question IDs from there
+		//TODO: find a random question that isn’t on said list
+		//TODO: add the question to said list and return it
+		return null;
+	}
+
+	public static int getScoreForUser(String discordUserID) {
+		int score = 0;
+		//TODO: iterate over all questions
+			//TODO: get achieved score for the user for the question
+			//TODO: add to score
+		return score;
+	}
+
+	public static class Question {
+		
+		private String text;
+		private char[] validAnswers;
+		private char[] correctAnswers;
+		private int scoreValue;
+		private int ID;
+		private ArrayList<String> categories = new ArrayList<String>();
+		
+		/**
+		 * @param ID unique ID for the question
+		 * @param question The string for the question text
+		 * @param answers The multiple choice answers
+		 * @param mask A mask to be laid over answers to decide which answers are correct and which aren’t
+		 * @param scoreValue See getQuestionScoreValue()
+		 */
+		public Question(int ID, String question, String[] answers, boolean[] mask, int scoreValue) {
+			//TODO: build text, valid answers and correct answers
+			this.ID = ID;
+			this.scoreValue = scoreValue;
+		}
+		
+		//TODO: need a way to get back from the answer letter to the text answer and vice versa
+		
+		public boolean isInCategory(String category) {
+			for (int i=0; i<this.categories.size(); i++) {
+				if (this.categories.get(i).equals(category)) return true;
+			}
+			return false;
+		}
+		
+		public void addCategory(String category) {
+			this.categories.add(category);
+		}
+
+		/**
+		 * @return the full question text including multiple choice options with letters that correspond to getValidResponses()
+		 */
+		public String getQuestionTextWithOptions() {
+			return text;
+		}
+
+		/**
+		 * @return a character array containing all the valid answers
+		 */
+		public char[] getValidResponses() {
+			return this.validAnswers;
+		}
+		
+		/**
+		 * @return a character array containing all the correct answers
+		 */
+		public char[] getCorrectResponses() {
+			return this.correctAnswers;
+		}
+
+		/**
+		 * This is used to send the user’s reply back to the backend. Can be called
+		 * multiple times to add answers for questions with multiple possible answers.
+		 * 
+		 * @param discordUserID
+		 * @param answer
+		 */
+		public void addAnswer(String discordUserID, char answer) {
+			//TODO: store question ID, user ID, and the chosen answer
+		}
+
+		/**
+		 * Used to balance easy and difficult questions. Difficult questions will have a
+		 * higher value so if someone gets a bunch of them they will get less questions
+		 * overall.
+		 * 
+		 * @return
+		 */
+		public int getQuestionScoreValue() {
+			return this.scoreValue;
+		}
+		
+		public int getAchievedScore(String discordUserID) {
+			//TODO: retrieve given answers by user ID and question ID
+			//TODO: calculate score
+			return 0;
+		}
+	}
+}