From da6b366397aa15e2686840c1d9ffa5dae5d49d2a Mon Sep 17 00:00:00 2001
From: Vidhu Kant Sharma <vidhukant@vidhukant.com>
Date: Sat, 16 Nov 2024 02:16:16 +0530
Subject: First Commit

---
 src/Store/User.java | 120 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 120 insertions(+)
 create mode 100644 src/Store/User.java

(limited to 'src/Store/User.java')

diff --git a/src/Store/User.java b/src/Store/User.java
new file mode 100644
index 0000000..e414520
--- /dev/null
+++ b/src/Store/User.java
@@ -0,0 +1,120 @@
+package Store;
+
+import Server.JSONMessage;
+import com.corundumstudio.socketio.listener.DataListener;
+
+import java.sql.PreparedStatement;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+import java.sql.Statement;
+import java.util.Map;
+
+public class User {
+    private int id;
+    private final String userName;
+    private final String password;
+
+    public User(String userName, String password) {
+        this.userName = userName;
+        this.password = password;
+    }
+
+    public boolean save() throws SQLException {
+        if (!checkUniqueUsername(userName)) {
+            return false;
+        }
+
+        String sql = "INSERT INTO User (userName, password) VALUES (?, ?)";
+        PreparedStatement statement = ConnectionHandler.connection.prepareStatement(sql);
+
+        statement.setString(1, userName);
+        statement.setString(2, password);
+
+        statement.executeUpdate();
+
+        return true;
+    }
+
+    private boolean checkUniqueUsername(String userName) throws SQLException {
+        String sql = "SELECT * FROM User WHERE userName = '" + userName + "'";
+        Statement statement = ConnectionHandler.connection.createStatement();
+
+        ResultSet response = statement.executeQuery(sql);
+        while (response.next()) {
+            return false;
+        }
+
+        return true;
+    }
+
+    public boolean login() throws SQLException {
+        String sql = "SELECT * FROM User WHERE userName = '" + this.userName + "' AND password = '" + this.password + "'";
+        Statement statement = ConnectionHandler.connection.createStatement();
+
+        boolean loggedIn = false;
+        ResultSet response = statement.executeQuery(sql);
+        while (response.next()) {
+            this.id = response.getInt("ID");
+            loggedIn = true;
+        }
+
+        return loggedIn;
+    }
+
+    public static void createTable() throws SQLException {
+        String sql = "CREATE TABLE IF NOT EXISTS User (" +
+                "ID INTEGER NOT NULL PRIMARY KEY," +
+                "userName TEXT NOT NULL," +
+                "password text NOT NULL" +
+                ");";
+
+        Statement statement = ConnectionHandler.connection.createStatement();
+        statement.execute(sql);
+    }
+
+    public static DataListener<JSONMessage> signUpHandler() {
+        return ((client, data, ackSender) -> {
+            Map<String,String> d = data.getData();
+
+            User user = new User(d.get("userName"), d.get("password"));
+            try {
+                if (user.save()) {
+                    client.sendEvent("signedUp");
+                } else {
+                    client.sendEvent("usernameTaken");
+                    client.sendEvent("signUpFailed");
+                }
+            } catch (SQLException e) {
+                client.sendEvent("signUpFailed");
+                System.out.println(e.getMessage());
+            }
+        });
+    }
+
+    public static DataListener<JSONMessage> loginHandler() {
+        return ((client, data, ackSender) -> {
+            Map<String,String> d = data.getData();
+
+            User user = new User(d.get("userName"), d.get("password"));
+            try {
+                user.login();
+            } catch (SQLException e) {
+                System.out.println(e.getMessage());
+            }
+
+            if (user.login()) {
+                client.sendEvent("loggedIn", user.id);
+            } else {
+                client.sendEvent("loginFailed");
+            }
+        });
+    }
+
+    public String toJSON() {
+        return "{" +
+                "\"id\": "       + id       + "," +
+                "\"userName\": " + userName + "," +
+                "\"password\": " + password +
+                " }";
+    }
+}
\ No newline at end of file
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