Implemented Logging

Lab2/src/main/java/org/lumijiez/data/DataDeserializer.java

@@ -15,8 +15,8 @@ public class DataDeserializer {
             try (ObjectInputStream ois = new ObjectInputStream(new FileInputStream(serializedFile))) {
                 manager = (Supervisor) ois.readObject();
                 System.out.println("Supervisor object deserialized successfully.");
-            } catch (IOException | ClassNotFoundException e) {
+            } catch (ClassNotFoundException | IOException e) {
-                e.printStackTrace();
+                System.err.println("Error!");
             }
         } else {
             System.out.println("Serialized file 'manager.ser' does not exist.");

Lab2/src/main/java/org/lumijiez/gui/StudentManagementGUI.java

@@ -231,6 +231,8 @@ public class StudentManagementGUI extends JFrame {
 
         if (result == JOptionPane.YES_OPTION) {
             DataSerializer.serialize(sv);
+            sv.getLogger().logOperation("Died!");
+            sv.getLogger().close();
             dispose();
         }
     }

Lab2/src/main/java/org/lumijiez/gui/util/FilePicker.java

@@ -195,6 +195,7 @@ public class FilePicker extends JFrame {
             throw new RuntimeException(ex);
         }
         DisplayerManager.displayStudents();
+
         this.dispose();
     }
 }

Lab2/src/main/java/org/lumijiez/managers/LogManager.java

@@ -0,0 +1,51 @@
+package org.lumijiez.managers;
+
+
+import java.io.BufferedWriter;
+import java.io.FileWriter;
+import java.io.IOException;
+import java.time.LocalDateTime;
+import java.time.format.DateTimeFormatter;
+
+public class LogManager {
+
+    private transient BufferedWriter writer;
+
+    private void init() {
+        BufferedWriter writerTemp;
+        LocalDateTime currentDateTime = LocalDateTime.now();
+        DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd-HH-mm-ss");
+        String fileHandle = "log-" + currentDateTime.format(formatter) + ".txt";
+        try {
+            FileWriter fwriter = new FileWriter(fileHandle);
+            writerTemp = new BufferedWriter(fwriter);
+        } catch (IOException e) {
+            System.err.println("Error!");
+            writerTemp = null;
+        }
+        this.writer = writerTemp;
+    }
+
+    public void logOperation(String msg) {
+        if (writer == null) init();
+        LocalDateTime currentDateTime = LocalDateTime.now();
+        DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss |");
+        try {
+            writer.write(currentDateTime.format(formatter) + msg);
+            writer.flush();
+            System.out.println(msg);
+            writer.newLine();
+        } catch (IOException e) {
+            System.err.println("Error!");
+        }
+    }
+
+    public void close() {
+        try {
+            this.writer.close();
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+
+    }
+}

Lab2/src/main/java/org/lumijiez/managers/Supervisor.java

@@ -9,14 +9,19 @@ import java.io.Serializable;
 import java.util.Date;
 
 public class Supervisor implements Serializable {
+
     private final FacultyManager fm;
 
+    private final LogManager logger;
+
     public Supervisor() {
         this.fm = new FacultyManager();
+        this.logger = new LogManager();
     }
 
     public void addFaculty(Faculty faculty) {
         getFm().addFaculty(faculty);
+        logger.logOperation("Faculty added: " + faculty.getName());
     }
 
     public void deleteFaculty(Faculty faculty) {
@@ -27,10 +32,12 @@ public class Supervisor implements Serializable {
                 getFm().getGm().getSm().deleteStudent(st);
             }
         }
+        logger.logOperation("Faculty deleted : " + faculty.getName());
     }
 
     public void addGrade(Student student, Grade grade) {
         student.addGrade(grade);
+        logger.logOperation("Student graded: " + student.getName() + " " + grade.getSubject().getName() + " " + grade.getGrade());
     }
 
     public void editGroup(Group group, String name, Faculty faculty) {
@@ -39,6 +46,7 @@ public class Supervisor implements Serializable {
         group.setFaculty(faculty);
         faculty.addGroup(group);
         oldFac.getGroups().remove(group);
+        logger.logOperation("Group edited: " + group.getName());
     }
 
     public void deleteGroup(Group group) {
@@ -46,11 +54,13 @@ public class Supervisor implements Serializable {
         for (Student st : group.getStudents()) {
             getFm().getGm().getSm().deleteStudent(st);
         }
+        logger.logOperation("Group deleted: " + group.getName());
     }
 
     public void addStudent(String name, String surname, String email, Group group, Faculty faculty, Date birth, Date enrol) {
         Student newStudent = new Student(name, surname, email, group, faculty, birth, enrol);
         getFm().getGm().getSm().addStudent(newStudent);
+        logger.logOperation("Student added: " + newStudent.getFullname());
     }
 
     public void editStudent(Student student, String name, String surname, String email, Group group, Faculty faculty, Date birth, Date enrol) {
@@ -64,17 +74,20 @@ public class Supervisor implements Serializable {
         student.setFaculty(faculty);
         student.setDateOfBirth(birth);
         student.setEnrollmentDate(enrol);
+        logger.logOperation("Student edited: " + student.getFullname());
     }
 
     public void addGroup(Group group, Faculty faculty) {
         group.setFaculty(faculty);
         faculty.addGroup(group);
         getFm().getGm().addGroup(group);
+        logger.logOperation("Group added: " + group.getName());
     }
 
     public void deleteStudent(Student st) {
         st.getGroup().deleteStudent(st);
         getFm().getGm().getSm().deleteStudent(st);
+        logger.logOperation("Student deleted: " + st.getFullname());
     }
 
     public Faculty getFacultyByName(String facultyName) {
@@ -97,4 +110,8 @@ public class Supervisor implements Serializable {
         return fm;
     }
 
+    public LogManager getLogger() {
+        return this.logger;
+    }
+
 }