feat(DevWeb): Projet - Login page, Login Api

S2/DevWeb/Projet/src/main/java/uppa/project/Main.java

@@ -1,10 +1,8 @@
 package uppa.project;
 
-import java.util.Calendar;
 import uppa.project.dao.DAO;
+import uppa.project.dao.DAOException;
 import uppa.project.dao.jpa.Game_JPA_DAO_Factory;
-import uppa.project.pojo.Game;
-import uppa.project.pojo.Player;
 import uppa.project.pojo.User;
 
 public class Main {
@@ -17,34 +15,43 @@ public class Main {
 //      DAO<Player> daoJpaPlayer = jpaDaoFactory.getDAOPlayer();
 
       // Contenu de la BD au début
-      User[] users = daoJpaUser.findAll();
-      for (User u : users) {
-        System.out.println(u.toString());
+//      User[] users = daoJpaUser.findAll();
+//      for (User u : users) {
+//        System.out.println(u.toString());
+//      }
+//      System.out.println();
+
+//      // Ajout d'User :
+//      Calendar cal1 = Calendar.getInstance();
+//      cal1.set(1996, Calendar.FEBRUARY, 20);
+//      User user1 = new User("Kevin", "Mitresse", cal1.getTime(), User.Gender.MALE);
+//
+//      Calendar cal2 = Calendar.getInstance();
+//      cal2.set(2002, Calendar.JUNE, 28);
+//      User user2 = new User("Lucàs", "Vabre", cal2.getTime(), User.Gender.MALE);
+//
+//      daoJpaUser.create(user1);
+//      daoJpaUser.create(user2);
+
+      System.out.println("test récupération user");
+      User[] users2 = daoJpaUser.findByField("username", "Kevin");
+      for (User user : users2) {
+        System.out.println(user.toString());
       }
-      System.out.println();
-
-      // Ajout d'User :
-      Calendar cal1 = Calendar.getInstance();
-      cal1.set(1996, Calendar.FEBRUARY, 20);
-      User user1 = new User("Kevin", "Mitresse", cal1.getTime(), User.Gender.MALE);
-
-      Calendar cal2 = Calendar.getInstance();
-      cal2.set(2002, Calendar.JUNE, 28);
-      User user2 = new User("Lucàs", "Vabre", cal2.getTime(), User.Gender.MALE);
-
-      daoJpaUser.create(user1);
-      daoJpaUser.create(user2);
-
-      // Contenu de la BD après ajout
-      users = daoJpaUser.findAll();
-      for (User u : users) {
-        System.out.println(u.toString());
-      }
-      System.out.println();
-
-      EntityManagerProvider.close();
-    } catch (Exception e) {
-      e.printStackTrace();
+      System.out.println("fin test");
+    } catch (DAOException e) {
+      throw new RuntimeException(e);
     }
+    // Contenu de la BD après ajout
+//      users = daoJpaUser.findAll();
+//      for (User u : users) {
+//        System.out.println(u.toString());
+//      }
+//      System.out.println();
+//
+//      EntityManagerProvider.close();
+//    } catch (Exception e) {
+//      e.printStackTrace();
+//    }
   }
 }

S2/DevWeb/Projet/src/main/java/uppa/project/dao/DAO.java

@@ -6,6 +6,10 @@
 
 package uppa.project.dao;
 
+import jakarta.persistence.TypedQuery;
+import java.util.List;
+import uppa.project.pojo.User;
+
 /**
  * DAO abstrait et générique pour tout type de données
  *
@@ -52,4 +56,6 @@ public abstract class DAO<D> {
    * @throws DAOException en cas de problème
    */
   public abstract void delete(D data) throws DAOException;
+
+  public abstract D[] findByField(String field, String value) throws DAOException;
 }

S2/DevWeb/Projet/src/main/java/uppa/project/dao/jpa/DAO_JPA_Game.java

@@ -8,6 +8,7 @@ import uppa.project.EntityManagerProvider;
 import uppa.project.dao.DAO;
 import uppa.project.dao.DAOException;
 import uppa.project.pojo.Game;
+import uppa.project.pojo.User;
 
 public class DAO_JPA_Game extends DAO<Game> {
 
@@ -24,6 +25,14 @@ public class DAO_JPA_Game extends DAO<Game> {
     return result;
   }
 
+  public Game[] findByField(String field, String value) throws DAOException {
+    TypedQuery<Game> query = entityManager.createQuery("SELECT u FROM Game u WHERE ?1=?2", Game.class);
+    query.setParameter(1, field);
+    query.setParameter(2, value);
+    List<Game> results = query.getResultList();
+    return results.toArray(new Game[0]);
+  }
+
   @Override
   public Game[] findAll() throws DAOException {
     TypedQuery<Game> query = entityManager.createQuery("SELECT g FROM Game g", Game.class);

S2/DevWeb/Projet/src/main/java/uppa/project/dao/jpa/DAO_JPA_Player.java

@@ -8,6 +8,7 @@ import uppa.project.EntityManagerProvider;
 import uppa.project.dao.DAO;
 import uppa.project.dao.DAOException;
 import uppa.project.pojo.Player;
+import uppa.project.pojo.User;
 
 public class DAO_JPA_Player extends DAO<Player> {
 
@@ -24,6 +25,14 @@ public class DAO_JPA_Player extends DAO<Player> {
     return result;
   }
 
+  public Player[] findByField(String field, String value) throws DAOException {
+    TypedQuery<Player> query = entityManager.createQuery("SELECT p FROM Player p WHERE ?1=?2", Player.class);
+    query.setParameter(1, field);
+    query.setParameter(2, value);
+    List<Player> results = query.getResultList();
+    return results.toArray(new Player[0]);
+  }
+
   @Override
   public Player[] findAll() throws DAOException {
     TypedQuery<Player> query = entityManager.createQuery("SELECT p FROM Player p", Player.class);

S2/DevWeb/Projet/src/main/java/uppa/project/dao/jpa/DAO_JPA_User.java

@@ -24,6 +24,15 @@ public class DAO_JPA_User extends DAO<User> {
     return result;
   }
 
+  public User[] findByField(String field, String value) throws DAOException {
+    String sqlQuery = String.format("SELECT u FROM User u WHERE u.%s = (:val)", field);
+
+    TypedQuery<User> query = entityManager.createQuery(sqlQuery, User.class);
+    query.setParameter("val", value);
+    List<User> results = query.getResultList();
+    return results.toArray(new User[0]);
+  }
+
   @Override
   public User[] findAll() throws DAOException {
     TypedQuery<User> query = entityManager.createQuery("SELECT u FROM User u", User.class);

S2/DevWeb/Projet/src/main/java/uppa/project/pojo/Card.java

@@ -1,10 +1,16 @@
 package uppa.project.pojo;
 
 public class Card {
+  /**
+   * The color of the card:
+   * Heart -> Coeur
+   * Clubs -> Trèfle
+   * Spades -> Pique
+   * Diamonds -> Carreau
+   */
+  public enum Color{HEART, CLUBS, SPADES, DIAMONDS}
 
-  public enum Color{coeur, carreau, pique, trefle}
-
-  public enum Value{un, deux, trois, quatre, cinq, six, sept, huit, neuf, dix, valet, dame, roi}
+  public enum Value{ONE, TWO, THREE, FOUR, FIVE, SIX, SEVEN, EIGHT, NINE, TEN, JACK, QUEEN, KING}
   private final Color color;
 
   private final Value value;

S2/DevWeb/Projet/src/main/java/uppa/project/pojo/User.java

@@ -106,7 +106,7 @@ public class User implements Serializable {
     return (int) (diffDays / 365);
   }
 
-  private String hashPassword(String password) {
+  public static String hashPassword(String password) {
     try {
       MessageDigest digest = MessageDigest.getInstance("SHA-256");
 
@@ -118,7 +118,6 @@ public class User implements Serializable {
         if (hex.length() == 1) hexString.append('0');
         hexString.append(hex);
       }
-
       return hexString.toString();
     } catch (NoSuchAlgorithmException e) {
       e.printStackTrace();

S2/DevWeb/Projet/src/main/java/uppa/project/servlet/HelloServlet.java

@@ -1,27 +0,0 @@
-package uppa.project.servlet;
-
-import java.io.*;
-import jakarta.servlet.http.*;
-import jakarta.servlet.annotation.*;
-
-@WebServlet(name = "helloServlet", value = "/hello-servlet")
-public class HelloServlet extends HttpServlet {
-    private String message;
-
-    public void init() {
-        message = "Hello World!";
-    }
-
-    public void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException {
-        response.setContentType("text/html");
-
-        // Hello
-        PrintWriter out = response.getWriter();
-        out.println("<html><body>");
-        out.println("<h1>" + message + "</h1>");
-        out.println("</body></html>");
-    }
-
-    public void destroy() {
-    }
-}

S2/DevWeb/Projet/src/main/java/uppa/project/servlet/LoginServlet.java

@@ -0,0 +1,93 @@
+package uppa.project.servlet;
+
+import com.google.gson.Gson;
+import com.google.gson.JsonElement;
+import com.google.gson.JsonObject;
+import com.google.gson.JsonParser;
+import jakarta.servlet.annotation.WebServlet;
+import jakarta.servlet.http.HttpServlet;
+import jakarta.servlet.http.HttpServletRequest;
+import jakarta.servlet.http.HttpServletResponse;
+import java.io.IOException;
+import java.io.PrintWriter;
+import uppa.project.dao.DAO;
+import uppa.project.dao.DAOException;
+import uppa.project.dao.jpa.Game_JPA_DAO_Factory;
+import uppa.project.servlet.json.ErrorApi;
+import uppa.project.pojo.User;
+import uppa.project.servlet.utils.RequestUtils;
+
+@WebServlet(name = "loginApiServlet", value = "/api/login")
+public class LoginServlet extends HttpServlet {
+
+  private final Gson gson = new Gson();
+
+  public void init() {
+  }
+
+  public void doPost(HttpServletRequest request, HttpServletResponse response) throws IOException {
+    response.setContentType("application/json");
+    response.setCharacterEncoding("UTF-8");
+    PrintWriter out = response.getWriter();
+
+    // Convert the string to a JSON object
+    JsonObject jsonBody;
+    try {
+      String requestBody = RequestUtils.getRequestBody(request);
+      jsonBody = JsonParser.parseString(requestBody).getAsJsonObject();
+    } catch (Exception e) {
+      int STATUS = 400;
+
+      ErrorApi error = new ErrorApi(STATUS, "Bad Request", "Invalid JSON");
+      response.setStatus(STATUS);
+      out.println(error.toJson());
+      return;
+    }
+
+    // Check if the username and password are present
+    JsonElement username = jsonBody.get("username");
+    JsonElement password = jsonBody.get("password");
+    if (username == null || password == null) {
+      int STATUS = 400;
+
+      ErrorApi error = new ErrorApi(STATUS, "Bad Request", "Username and password are required");
+      response.setStatus(STATUS);
+      out.println(error.toJson());
+      return;
+    }
+
+    // Get User from database matching the username and password
+    User user = LoginServlet.loginUser(username.getAsString(), password.getAsString());
+    if (user == null) {
+      int STATUS = 401;
+      ErrorApi error = new ErrorApi(STATUS, "Unauthorized", "Invalid username or password");
+
+      response.setStatus(STATUS);
+      out.println(error.toJson());
+      return;
+    }
+
+    // Return the user as JSON
+    String json = gson.toJson(user);
+    out.println(json);
+    out.flush();
+  }
+
+  private static User loginUser(String username, String password) {
+    Game_JPA_DAO_Factory factory = new Game_JPA_DAO_Factory();
+    try {
+      DAO<User> userDao = factory.getDAOUser();
+      User[] users = userDao.findByField("username", username);
+
+      for (User user : users) {
+        if (user.verifyPassword(password)) return user;
+      }
+    } catch (DAOException e) {
+      throw new RuntimeException(e);
+    }
+    return null;
+  }
+
+  public void destroy() {
+  }
+}

S2/DevWeb/Projet/src/main/java/uppa/project/servlet/json/ErrorApi.java

@@ -0,0 +1,32 @@
+package uppa.project.servlet.json;
+
+import com.google.gson.Gson;
+
+public class ErrorApi {
+  private final int status;
+  private final String error;
+  private final String message;
+
+  public ErrorApi(int status, String error, String message) {
+    this.status = status;
+    this.error = error;
+    this.message = message;
+  }
+
+  public int getStatus() {
+    return status;
+  }
+
+  public String getError() {
+    return error;
+  }
+
+  public String getMessage() {
+    return message;
+  }
+
+  public String toJson() {
+    Gson gson = new Gson();
+    return gson.toJson(this);
+  }
+}

S2/DevWeb/Projet/src/main/java/uppa/project/servlet/utils/RequestUtils.java

@@ -0,0 +1,17 @@
+package uppa.project.servlet.utils;
+
+import jakarta.servlet.http.HttpServletRequest;
+import java.io.BufferedReader;
+import java.io.IOException;
+
+public class RequestUtils {
+  public static String getRequestBody(HttpServletRequest request) throws IOException {
+    StringBuilder sb = new StringBuilder();
+    BufferedReader reader = request.getReader();
+    String line;
+    while ((line = reader.readLine()) != null) {
+      sb.append(line);
+    }
+    return sb.toString();
+  }
+}