From ba6d428ad11f4395d5bfd61567e95b0c8259c560 Mon Sep 17 00:00:00 2001
From: edavud <enisdavud@gmail.com>
Date: Thu, 1 Dec 2022 12:39:32 -0500
Subject: [PATCH] Implement functionalities in Student, StudentService,
 PrinterHelper, and Main classes.

---
 src/com/generation/model/Instructor.java       |  4 ++--
 src/com/generation/model/Student.java          | 14 ++++++++++++--
 src/com/generation/service/StudentService.java |  4 ++++
 src/com/generation/utils/PrinterHelper.java    | 16 +++++++++++++---
 4 files changed, 31 insertions(+), 7 deletions(-)

diff --git a/src/com/generation/model/Instructor.java b/src/com/generation/model/Instructor.java
index 9dccdfa..c7268a9 100644
--- a/src/com/generation/model/Instructor.java
+++ b/src/com/generation/model/Instructor.java
@@ -1,7 +1,7 @@
 package com.generation.model;
 
-import java.util.ArrayList;
 import java.util.Date;
+import java.util.ArrayList;
 import java.util.List;
 
 public class Instructor
@@ -12,7 +12,7 @@ public class Instructor
 
     private final List<Course> teachingCourses = new ArrayList<>();
 
-    protected Instructor( String id, String name, String email, Date birthDate )
+    protected Instructor(String id, String name, String email, Date birthDate )
     {
         super( id, name, email, birthDate );
     }
diff --git a/src/com/generation/model/Student.java b/src/com/generation/model/Student.java
index 0897ebe..5d26fbb 100644
--- a/src/com/generation/model/Student.java
+++ b/src/com/generation/model/Student.java
@@ -1,7 +1,7 @@
 package com.generation.model;
 
-import java.util.ArrayList;
 import java.util.Date;
+import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
@@ -16,7 +16,7 @@ public class Student
 
     private final Map<String, Course> approvedCourses = new HashMap<>();
 
-    public Student( String id, String name, String email, Date birthDate )
+    public Student(String id, String name, String email, Date birthDate )
     {
         super( id, name, email, birthDate );
     }
@@ -24,6 +24,11 @@ public Student( String id, String name, String email, Date birthDate )
     public void enrollToCourse( Course course )
     {
         //TODO implement this method
+        if(!isAttendingCourse(course.getCode())) {
+            courses.add(course);
+        } else {
+            System.out.println("Student already enrolled.");
+        }
     }
 
     public void registerApprovedCourse( Course course )
@@ -35,6 +40,11 @@ public void registerApprovedCourse( Course course )
     public boolean isAttendingCourse( String courseCode )
     {
         //TODO implement this method
+        for(Course _course : courses) {
+            if(_course.getCode().equals(courseCode)) {
+                return true;
+            }
+        }
         return false;
     }
 
diff --git a/src/com/generation/service/StudentService.java b/src/com/generation/service/StudentService.java
index f980e40..d59812b 100644
--- a/src/com/generation/service/StudentService.java
+++ b/src/com/generation/service/StudentService.java
@@ -27,6 +27,10 @@ public Student findStudent( String studentId )
     public void showSummary()
     {
         //TODO implement
+        System.out.println("Students: ");
+        for(Student _student : students.values()){
+            System.out.println(_student.toString());
+        }
     }
 
     public void enrollToCourse( String studentId, Course course )
diff --git a/src/com/generation/utils/PrinterHelper.java b/src/com/generation/utils/PrinterHelper.java
index 6f1ca9b..5648e2d 100644
--- a/src/com/generation/utils/PrinterHelper.java
+++ b/src/com/generation/utils/PrinterHelper.java
@@ -37,10 +37,20 @@ public static Student createStudentMenu( Scanner scanner )
         String id = scanner.next();
         System.out.println( "| Enter student email:                |" );
         String email = scanner.next();
-        System.out.println( "| Enter student birth date(mm/dd/yyyy)|" );
-        DateFormat formatter = new SimpleDateFormat( "mm/dd/yyyy");
+
+        DateFormat formatter = new SimpleDateFormat( "MM/dd/yyyy");
         //TODO validate date format and catch exception to avoid crash
-        Date birthDate = formatter.parse( scanner.next());
+        formatter.setLenient(false);
+        Date birthDate = null;
+
+        while(birthDate == null) {
+            System.out.println( "| Enter student birth date(mm/dd/yyyy)|" );
+            try {
+                birthDate = formatter.parse(scanner.next());
+            } catch (ParseException e) {
+                System.out.println("Please input valid date");
+            }
+        }
         System.out.println( "|-------------------------------------|" );
         Student student = new Student( id, name, email, birthDate );
         System.out.println( "Student Successfully Registered! " );