Added Faculty management

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

@@ -0,0 +1,62 @@
+package org.lumijiez.managers;
+
+import org.lumijiez.base.Faculty;
+import org.lumijiez.base.Group;
+import org.lumijiez.base.Student;
+import org.lumijiez.util.FullStudentData;
+
+import java.io.Serializable;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Objects;
+
+import static org.lumijiez.enums.StudyField.DEFAULT_UNASSIGNED;
+
+public class StudentManager implements Serializable {
+    private final List<Student> students = new ArrayList<>();
+
+    public void addStudent(FullStudentData data, Supervisor sv) {
+        Faculty faculty;
+        Group group;
+
+        if (Objects.isNull(sv.getFm().getFaculty(data.faculty()))) {
+            Faculty newFaculty = new Faculty(data.faculty(), DEFAULT_UNASSIGNED.getAbbreviation(), DEFAULT_UNASSIGNED);
+            sv.getFm().addFaculty(newFaculty);
+            faculty = newFaculty;
+        } else {
+            faculty = sv.getFm().getFaculty(data.faculty());
+        }
+
+        if (Objects.isNull(sv.getFm().getGm().getGroup(data.group()))) {
+            Group newGroup = new Group("Unassigned");
+            sv.getFm().getGm().addGroup(newGroup);
+            group = newGroup;
+        } else {
+            group = sv.getFm().getGm().getGroup(data.group());
+        }
+
+        Student newStudent = new Student(data.name(), data.surname(), group, faculty);
+        students.add(newStudent);
+    }
+
+    public List<Student> getStudents() {
+        return students;
+    }
+
+    public Student getStudent(FullStudentData data) {
+        for (Student st : students) {
+            if (st.getFSD().equals(data)) return st;
+        }
+        return null;
+    }
+
+    public void deleteStudent(FullStudentData data) {
+        students.removeIf(student ->
+                student.getName().equals(data.name()) &&
+                        student.getSurname().equals(data.surname()) &&
+                        student.getGroup().getName().equals(data.group()) &&
+                        student.getFaculty().getName().equals(data.faculty())
+        );
+    }
+
+}

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

@@ -17,10 +17,8 @@ public class Supervisor implements Serializable {
 
     public String getStudentsText() {
         StringBuilder info = new StringBuilder();
-        for (Group group : fm.getGm().getGroups()) {
-            for (Student student : group.getStudents()) {
-                info.append(student.getFullname()).append(" ").append(student.getGroup().getName()).append("\n");
-            }
+        for (Student st : fm.getGm().getSm().getStudents()) {
+            info.append(st.getFullname()).append(" ").append(st.getGroup().getName()).append("\n");
         }
         return info.toString();
     }