Merge pull request #7 from kavindus0/regAndLog

Reg and log

Author: kavindus0

src/EmployDetail.java

@@ -1,7 +1,7 @@
 import java.util.Scanner;
 class EmployDetail {
     String name, father_name, email, position, employ_id;
-    private double employ_salary;
+    double employ_salary;
     int employ_contact;
 
     public void getInfo() {

src/EmployManagementSystem.java

@@ -0,0 +1,161 @@
+import java.io.*;
+import java.util.Scanner;
+
+public class EntryPoint {
+    private static final String FILE_NAME = "user_data.txt";
+
+    public static void main(String[] args) {
+        Scanner scanner = new Scanner(System.in);
+        while (true) {
+            System.out.println("1. Register");
+            System.out.println("2. Login");
+            System.out.println("3. Exit");
+            System.out.print("Enter your choice: ");
+
+            int choice = 0;
+            try {
+                choice = scanner.nextInt();
+                scanner.nextLine();
+            } catch (Exception e) {
+                System.out.println("Invalid choice");
+                choice = 3;
+            }
+            switch (choice) {
+                case 1:
+                    register(scanner);
+                    break;
+                case 2:
+                    login(scanner);
+                    break;
+                case 3:
+                    System.out.println("Exiting...");
+                    scanner.close();
+                    System.exit(0);
+                    break;
+                default:
+                    System.out.println("Invalid choice. Please try again.");
+            }
+        }
+    }
+
+    private static void register(Scanner scanner) {
+        System.out.print("Enter username: ");
+        String username = scanner.nextLine();
+        System.out.print("Enter password: ");
+        String password = scanner.nextLine();
+
+        if (isUserExists(username)) {
+            System.out.println("Username already exists. Please try a different username.");
+        } else {
+            saveUser(username, password);
+            System.out.println("Registration successful!");
+        }
+    }
+
+    private static void login(Scanner scanner) {
+        System.out.print("Enter username: ");
+        String username = scanner.nextLine();
+        System.out.print("Enter password: ");
+        String password = scanner.nextLine();
+
+        if (authenticateUser(username, password)) {
+            System.out.println("Login successful!");
+            
+        EmployeeDataView viewerData = new EmployeeDataView();
+        Scanner sc = new Scanner(System.in);
+        MainMenu menu = new MainMenu();
+        Employee_Show viewer = new Employee_Show();
+        menu.menu();
+        int choice = 0;
+        while (choice != 5) {
+            StaticsArt.SelectList();
+            System.out.print("\nEnter your choice: ");
+            choice = Integer.parseInt(sc.nextLine());
+
+            switch (choice) {
+                case 1:
+                    new Employee_Add().createFile();
+                    break;
+
+                case 2:
+                    viewerData.listUserdataFiles();
+                    System.out.print("\nEnter Employee ID to view: ");
+                    String viewId = sc.nextLine();
+                    try {
+                        viewer.viewFile(viewId);
+                    } catch (Exception e) {
+                        System.out.println(e.getMessage());
+                    }
+                    break;
+
+                case 3:
+                    System.out.print("\nEnter Employee ID to remove: ");
+                    viewerData.listUserdataFiles();
+                    String removeId = sc.nextLine();
+                    new Employee_Remove().removeFile(removeId);
+                    break;
+
+                case 4:
+                    System.out.print("\nEnter Employee ID to update: ");
+                    viewerData.listUserdataFiles();
+                    String updateId = sc.nextLine();
+                    System.out.print("Enter old data to update: ");
+                    String oldData = sc.nextLine();
+                    System.out.print("Enter new data: ");
+                    String newData = sc.nextLine();
+                    new Employee_Update().updateFile(updateId, oldData, newData);
+                    break;
+
+                case 5:
+                    new CodeExit().out();
+                    break;
+
+                default:
+                    System.out.println("Invalid choice. Please try again.");
+            }
+        }
+
+        } else {
+            System.out.println("Invalid username or password!");
+        }
+    }
+
+    private static boolean isUserExists(String username) {
+        try (BufferedReader reader = new BufferedReader(new FileReader(FILE_NAME))) {
+            String line;
+            while ((line = reader.readLine()) != null) {
+                String[] parts = line.split(",");
+                if (parts[0].equals(username)) {
+                    return true;
+                }
+            }
+        } catch (IOException e) {
+            System.out.println("Error reading user data: " + e.getMessage());
+        }
+        return false;
+    }
+
+    private static boolean authenticateUser(String username, String password) {
+        try (BufferedReader reader = new BufferedReader(new FileReader(FILE_NAME))) {
+            String line;
+            while ((line = reader.readLine()) != null) {
+                String[] parts = line.split(",");
+                if (parts[0].equals(username) && parts[1].equals(password)) {
+                    return true;
+                }
+            }
+        } catch (IOException e) {
+            System.out.println("Error reading user data: " + e.getMessage());
+        }
+        return false;
+    }
+
+    private static void saveUser(String username, String password) {
+        try (BufferedWriter writer = new BufferedWriter(new FileWriter(FILE_NAME, true))) {
+            writer.write(username + "," + password);
+            writer.newLine();
+        } catch (IOException e) {
+            System.out.println("Error saving user data: " + e.getMessage());
+        }
+    }
+}

src/EntryPoint.java

@@ -0,0 +1,17 @@
+public class User {
+    private String username;
+    private String password;
+
+    public User(String username, String password) {
+        this.username = username;
+        this.password = password;
+    }
+
+    public String getUsername() {
+        return username;
+    }
+
+    public String getPassword() {
+        return password;
+    }
+}

src/User.java

@@ -0,0 +1 @@
+kavindu,sachinthe