diff --git a/README.md b/README.md
index d20aaf9..7071577 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,4 @@
+[![Review Assignment Due Date](https://classroom.github.com/assets/deadline-readme-button-22041afd0340ce965d47ae6ef1cefeee28c7c493a6346c4f15d667ab976d596c.svg)](https://classroom.github.com/a/339Lr3BJ)
 ### How the tests work (and Docker requirement)
 
 This project ships with an end‑to‑end CLI integration test suite that uses Testcontainers to spin up a temporary MySQL database. 
diff --git a/src/main/java/com/example/Main.java b/src/main/java/com/example/Main.java
index 6dc6fbd..20b6f20 100644
--- a/src/main/java/com/example/Main.java
+++ b/src/main/java/com/example/Main.java
@@ -1,9 +1,8 @@
 package com.example;
 
-import java.sql.Connection;
-import java.sql.DriverManager;
-import java.sql.SQLException;
+import java.sql.*;
 import java.util.Arrays;
+import java.util.Scanner;
 
 public class Main {
 
@@ -31,6 +30,246 @@ public void run() {
             throw new RuntimeException(e);
         }
         //Todo: Starting point for your code
+        Scanner scanner = new Scanner(System.in);
+
+        System.out.println("Username:");
+        String username = scanner.nextLine();
+
+        System.out.println("Password:");
+        String password = scanner.nextLine();
+
+        boolean isValid = validateLogin(username, password, jdbcUrl, dbUser, dbPass);
+
+        if (!isValid) {
+            System.out.println("Invalid username or password");
+            // Testarna förväntar sig att man kan välja 0 för att avsluta
+            System.out.print("Press 0 to exit or any key to continue...");
+            String choice = scanner.nextLine();
+            if ("0".equals(choice)) {
+                return;
+            }
+        } else {
+            System.out.println("Login successful!");
+        }
+
+        // Huvudmeny
+        boolean running = true;
+        while (running) {
+            System.out.println("1) List moon missions");
+            System.out.println("2) Get a moon mission by mission_id");
+            System.out.println("3) Count missions for a given year");
+            System.out.println("4) Create an account");
+            System.out.println("5) Update an account password");
+            System.out.println("6) Delete an account");
+            System.out.println("0) Exit");
+
+            System.out.print("Enter choice: ");
+            String choice = scanner.nextLine();
+
+            switch (choice) {
+                case "1":
+                    listMoonMissions(jdbcUrl, dbUser, dbPass);
+                    break;
+                case "2":
+                    System.out.print("Enter mission ID: ");
+                    String missionId = scanner.nextLine();
+                    getMissionById(jdbcUrl, dbUser, dbPass, missionId);
+                    break;
+                case "3":
+                    System.out.print("Enter year: ");
+                    String year = scanner.nextLine();
+                    countMissionsByYear(jdbcUrl, dbUser, dbPass, year);
+                    break;
+                case "4":
+                    createAccount(jdbcUrl, dbUser, dbPass, scanner);
+                    break;
+                case "5":
+                    updateAccountPassword(jdbcUrl, dbUser, dbPass, scanner);
+                    break;
+                case "6":
+                    deleteAccount(jdbcUrl, dbUser, dbPass, scanner);
+                    break;
+                case "0":
+                    System.out.println("Exiting...");
+                    running = false;
+                    break;
+                default:
+                    System.out.println("Invalid choice");
+            }
+
+            if (running && !choice.equals("0")) {
+                System.out.println("\nPress Enter to continue...");
+                scanner.nextLine();
+            }
+        }
+    }
+
+    private boolean validateLogin(String username, String password,
+                                  String jdbcUrl, String dbUser, String dbPass) {
+        String sql = "SELECT 1 FROM account WHERE name = ? AND password = ?";
+        try (Connection conn = DriverManager.getConnection(jdbcUrl, dbUser, dbPass);
+             PreparedStatement stmt = conn.prepareStatement(sql)) {
+
+            stmt.setString(1, username);
+            stmt.setString(2, password);
+
+            try (ResultSet rs = stmt.executeQuery()) {
+                return rs.next();
+            }
+
+        } catch (SQLException e) {
+            System.err.println("Login error: " + e.getMessage());
+            return false;
+        }
+    }
+
+    private void listMoonMissions(String jdbcUrl, String dbUser, String dbPass) {
+        String sql = "SELECT spacecraft FROM moon_mission ORDER BY mission_id";
+        try (Connection conn = DriverManager.getConnection(jdbcUrl, dbUser, dbPass);
+             Statement stmt = conn.createStatement();
+             ResultSet rs = stmt.executeQuery(sql)) {
+
+            System.out.println("\n=== Moon Missions ===");
+            while (rs.next()) {
+                System.out.println(rs.getString("spacecraft"));
+            }
+
+        } catch (SQLException e) {
+            System.err.println("Error listing missions: " + e.getMessage());
+        }
+    }
+
+    private void getMissionById(String jdbcUrl, String dbUser, String dbPass, String missionId) {
+        String sql = "SELECT * FROM moon_mission WHERE mission_id = ?";
+        try (Connection conn = DriverManager.getConnection(jdbcUrl, dbUser, dbPass);
+             PreparedStatement stmt = conn.prepareStatement(sql)) {
+
+            stmt.setInt(1, Integer.parseInt(missionId));
+            ResultSet rs = stmt.executeQuery();
+
+            if (rs.next()) {
+                System.out.println("\n=== Mission Details ===");
+                System.out.println("Mission ID: " + rs.getInt("mission_id"));
+                System.out.println("Spacecraft: " + rs.getString("spacecraft"));
+                System.out.println("Launch Date: " + rs.getDate("launch_date"));
+                System.out.println("Carrier Rocket: " + rs.getString("carrier_rocket"));
+                System.out.println("Operator: " + rs.getString("operator"));
+                System.out.println("Mission Type: " + rs.getString("mission_type"));
+                System.out.println("Outcome: " + rs.getString("outcome"));
+            } else {
+                System.out.println("Mission not found");
+            }
+
+        } catch (SQLException | NumberFormatException e) {
+            System.err.println("Error: " + e.getMessage());
+        }
+    }
+
+    private void countMissionsByYear(String jdbcUrl, String dbUser, String dbPass, String year) {
+        String sql = "SELECT COUNT(*) as count FROM moon_mission WHERE YEAR(launch_date) = ?";
+        try (Connection conn = DriverManager.getConnection(jdbcUrl, dbUser, dbPass);
+             PreparedStatement stmt = conn.prepareStatement(sql)) {
+
+            stmt.setInt(1, Integer.parseInt(year));
+            ResultSet rs = stmt.executeQuery();
+
+            if (rs.next()) {
+                int count = rs.getInt("count");
+                System.out.println("Number of missions in " + year + ": " + count);
+            }
+
+        } catch (SQLException | NumberFormatException e) {
+            System.err.println("Error: " + e.getMessage());
+        }
+    }
+
+    private void createAccount(String jdbcUrl, String dbUser, String dbPass, Scanner scanner) {
+        System.out.print("First name: ");
+        String firstName = scanner.nextLine();
+
+        System.out.print("Last name: ");
+        String lastName = scanner.nextLine();
+
+        System.out.print("SSN: ");
+        String ssn = scanner.nextLine();
+
+        System.out.print("Password: ");
+        String password = scanner.nextLine();
+
+        // Skapa username från förnamn + första 3 bokstäver av efternamn
+        String username = cap3(firstName) + cap3(lastName);
+
+        String sql = "INSERT INTO account (first_name, last_name, ssn, name, password) " +
+                "VALUES (?, ?, ?, ?, ?)";
+
+        try (Connection conn = DriverManager.getConnection(jdbcUrl, dbUser, dbPass);
+             PreparedStatement stmt = conn.prepareStatement(sql)) {
+
+            stmt.setString(1, firstName);
+            stmt.setString(2, lastName);
+            stmt.setString(3, ssn);
+            stmt.setString(4, username);
+            stmt.setString(5, password);
+
+            int rows = stmt.executeUpdate();
+            if (rows > 0) {
+                System.out.println("Account created successfully!");
+                System.out.println("Username: " + username);
+            }
+
+        } catch (SQLException e) {
+            System.err.println("Error creating account: " + e.getMessage());
+        }
+    }
+
+    private void updateAccountPassword(String jdbcUrl, String dbUser, String dbPass, Scanner scanner) {
+        System.out.print("Enter user ID: ");
+        String userId = scanner.nextLine();
+
+        System.out.print("Enter new password: ");
+        String newPassword = scanner.nextLine();
+
+        String sql = "UPDATE account SET password = ? WHERE user_id = ?";
+
+        try (Connection conn = DriverManager.getConnection(jdbcUrl, dbUser, dbPass);
+             PreparedStatement stmt = conn.prepareStatement(sql)) {
+
+            stmt.setString(1, newPassword);
+            stmt.setInt(2, Integer.parseInt(userId));
+
+            int rows = stmt.executeUpdate();
+            if (rows > 0) {
+                System.out.println("Password updated successfully");
+            } else {
+                System.out.println("No account found with ID: " + userId);
+            }
+
+        } catch (SQLException | NumberFormatException e) {
+            System.err.println("Error: " + e.getMessage());
+        }
+    }
+
+    private void deleteAccount(String jdbcUrl, String dbUser, String dbPass, Scanner scanner) {
+        System.out.print("Enter user ID to delete: ");
+        String userId = scanner.nextLine();
+
+        String sql = "DELETE FROM account WHERE user_id = ?";
+
+        try (Connection conn = DriverManager.getConnection(jdbcUrl, dbUser, dbPass);
+             PreparedStatement stmt = conn.prepareStatement(sql)) {
+
+            stmt.setInt(1, Integer.parseInt(userId));
+
+            int rows = stmt.executeUpdate();
+            if (rows > 0) {
+                System.out.println("Account deleted successfully");
+            } else {
+                System.out.println("No account found with ID: " + userId);
+            }
+
+        } catch (SQLException | NumberFormatException e) {
+            System.err.println("Error: " + e.getMessage());
+        }
     }
 
     /**
@@ -59,4 +298,14 @@ private static String resolveConfig(String propertyKey, String envKey) {
         }
         return (v == null || v.trim().isEmpty()) ? null : v.trim();
     }
-}
+
+    private static String cap3(String s) {
+        if (s == null) return "";
+        String t = s.trim();
+        if (t.isEmpty()) return "";
+
+        String part = t.substring(0, Math.min(3, t.length()));
+        return part.substring(0, 1).toUpperCase() +
+                part.substring(1).toLowerCase();
+    }
+}
\ No newline at end of file