/*------------------------------------------------------
My name:
My student number:
My course code: CSIT121
My email address:
Assignment number: 1
-------------------------------------------------------*/

import java.util.Scanner;

public class Enrolment {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		
		//Adding all the subjects 
		Subject CSIT111 = new Subject("CSIT111","Programming Fundamentals",6);
		Subject CSIT113 = new Subject("CSIT113","Problem Solving",6);
		Subject CSIT114 = new Subject("CSIT114","System Analysis",6);
		Subject CSIT115 = new Subject("CSIT115","Data Management and Security",6);
		Subject CSIT121 = new Subject("CSIT121","Object Oriented Design and Programming",6);
		Subject CSIT127 = new Subject("CSIT127","Networks and Communications",6);
		Subject CSIT128 = new Subject("CSIT128","Introduction to Web Technology",6);
		Subject CSCI235 = new Subject("CSCI235","Database Systems",6);
		Subject CSCI251 = new Subject("CSCI251","Advanced Programming",6);
		Subject CSIT214 = new Subject("CSIT214","IT Project Management",6);
		Subject MATH221 = new Subject("MATH221","Mathematics for Computer Science",6);
		Subject CSCI203 = new Subject("CSCI203","Algorithms and Data Structures",6);
		Subject CSIT226 = new Subject("CSIT226","Human Computer Interaction",6);
		Subject CSIT314 = new Subject("CSIT314","Software development Methodologies",6);
		Subject CSIT321 = new Subject("CSIT321","Project",12);
		Subject CSCI317 = new Subject("CSCI317","Database Performance Tuning",6);
		Subject INFO411 = new Subject("INFO411","Data Mining and Knowledge Discovery",6);
		Subject CSCI316 = new Subject("CSCI316","Big Data Mining Techniques and Implementation",6);
		Subject ISIT312 = new Subject("ISIT312","Big Data Management",6);
		Subject CSCI301 = new Subject("CSCI301","Contemporary Topics in Security",6);
		Subject CSCI262 = new Subject("CSCI262","System Security",6);
		Subject CSCI369 = new Subject("CSCI369","Ethical Hacking",6);
		Subject CSIT302 = new Subject("CSIT302","Cyber Security",6);
		Subject CSCI361 = new Subject("CSCI361","Cryptography and Secure Applications",6);
		Subject CSCI368 = new Subject("CSCI368","Network Security",6);
		Subject CSCI376 = new Subject("CSCI376","Multicore and GPU Programming",6);
		Subject CSCI236 = new Subject("CSCI236","3D Modelling and Animation",6);
		Subject CSCI336 = new Subject("CSCI336","Interactive Computer Graphics",6);
		Subject CSCI366 = new Subject("CSCI366","Mobile Multimedia",6);
		Subject CSCI356 = new Subject("CSCI356","Game Engine Essentials",6);
		Subject CSCI334 = new Subject("CSCI334","Software Design",6);
		Subject ISIT219 = new Subject("ISIT219","Knowledge and Information Engineering",6);
		Subject CSCI318 = new Subject("CSCI318","Software Engineering Practices and Principles",6);
		Subject ISIT315 = new Subject("ISIT315","Semantic Web",6);

		
		//Adding all the Majors
		//Big Data
		Major bigData = new Major("Big Data");
		Subject[] bDataCores = {CSCI317, INFO411,CSCI316,ISIT312};		
		bigData.addMCores(bDataCores);
		
		//Cyber Security
		Major cyberSec = new Major("Cyber Security");
		Subject[] cyberSecCores = {CSCI301, CSCI262, CSCI369, CSIT302};
		cyberSec.addMCores(cyberSecCores);
		
		//Digital System Security
		Major digitalSysSec = new Major("Digital System Security");
		Subject[] digitalSysSecCores = {CSCI361, CSCI262, CSCI368, CSCI376};
		digitalSysSec.addMCores(digitalSysSecCores);
		
		//Game and Mobile Development
		Major gameMobDev = new Major("Game and Mobile Development");
		Subject[] gameMobDevCores = {CSCI236, CSCI336, CSCI366, CSCI356,CSCI376};
		gameMobDev.addMCores(gameMobDevCores);
		
		//Software Engineering
		Major softEng = new Major("Software Engineering");
		Subject[] softEngCores = {CSCI334, ISIT219, CSCI318, ISIT315};
		softEng.addMCores(softEngCores);
		
		//List Of Major Course
		Major[] BCSMajors = {bigData, cyberSec, digitalSysSec, gameMobDev, softEng};
		
		//List of Core Course
		Subject[] cCores = {CSIT111, CSIT113, CSIT114, CSIT115, CSIT121, CSIT127, CSIT128,CSCI235, CSCI251, CSIT214, MATH221, CSCI203, CSIT226, CSIT314, CSIT321  };
		
		//List of Elective Course
		Subject[] cEles = {CSCI317, INFO411, CSCI316, ISIT312, CSCI301, CSCI262,
				CSCI369,CSIT302, CSCI361, CSCI368, CSCI376, CSCI236, CSCI336,
				CSCI366, CSCI356, CSCI334, ISIT219, CSCI318, ISIT315};
		
		//Adding Course
		Course bcs = new Course("Bachelor of Computer Science");
		
		//Adding Core, Major, and Elective subjects to the Bachelor of Computer Science
		bcs.addCores(cCores);
		bcs.addMajors(BCSMajors);
		bcs.addElectives(cEles);
		
		//Display Module
		System.out.println("Welcome to enrol the Bachelor of Computer Science course.");
		System.out.println("The course structure is as follows : ");
		System.out.println("------------------------");
		System.out.println(bcs);
		System.out.println();
		
		//Print Core Subjects
		System.out.println("Core Subjects :");
		for(Subject core: cCores) {
			System.out.println(core);
		}
		
		//Print Major Courses
		System.out.println();
		for(Major major: BCSMajors) {
			System.out.println(major.getName()+" Major");
			major.Display();
			System.out.println();
		}
		System.out.println();
		
		//Print Electives
		System.out.println("Elective Subjects :");
		for(Subject elective:cEles) {
			System.out.println(elective);
		}
		
		System.out.println("-----------------");
		System.out.println();
		System.out.println();
		
		//Personal Details
		Scanner sc = new Scanner(System.in);
		
		//New Student Object
		Student S1 = new Student();
		int total_credit = 96; //96 Credit points are available as Core Course
		System.out.println("Your following personal information are required to complete the enrolment.");
		
		//Set Student Name
		System.out.println("Please input your full name : ");
		String name = sc.nextLine();
		S1.setName(name);
		System.out.println();
		
		//Set Student Number
		System.out.println("Please input your student number : ");
		String number_input = sc.nextLine();
		int number = Integer.parseInt(number_input);
		S1.setNumber(number);
		System.out.println();
		
		//Set Student Gender
		System.out.println("Please input your gender: ");
		String gender = sc.nextLine();
		S1.setGender(gender);
		System.out.println();
		
		//Set Student Date Of Birth
		System.out.println("Please input your date of birth (dd/mm/yyyy) :");
		String dob = sc.nextLine();
		S1.setDob(dob);
		System.out.println();
		
		//Choosing Major
		System.out.println("Thanks for your information.");
		System.out.println("Inorder to complete the enrolment, please select a major from the list.");
		System.out.println("1: Big Data");
		System.out.println("2: Cyber Security");
		System.out.println("3: Digital System Security");
		System.out.println("4: Game and Mobile Development");
		System.out.println("5: Software Engineering");
		System.out.println();
		
		System.out.print("Please input the index number before the major: ");
		String index_input = sc.nextLine();
		int index = Integer.parseInt(index_input);
		
		Major major_choice = null;//Assigning the major chosen by the student to a variable
		System.out.println();
		
		System.out.println("You enrolled into: ");
		
		// All the subjects are of 6 credits
		int subject_credit = 6;
		switch(index) {
		case 1: {
			
			major_choice = bigData; 
			System.out.println(major_choice.getName()+" Major");
			bigData.Display();
			total_credit += 4*subject_credit; //4 courses are available in the Major Big Data 
			break;
		}
		case 2: {
			
			major_choice = cyberSec;
			System.out.println(major_choice.getName()+" Major");
			cyberSec.Display();
			total_credit += 4*subject_credit; //4 courses are available in the Major Cyber Security
			break;
		}
		case 3: {
			
			major_choice = digitalSysSec;
			System.out.println(major_choice.getName()+" Major");
			digitalSysSec.Display();
			total_credit += 4*subject_credit; //4 courses are available in the Major Digital System Security
			break;
		}
		case 4: {
			
			major_choice = gameMobDev;
			System.out.println(major_choice.getName()+" Major");
			gameMobDev.Display();
			total_credit += 5*subject_credit; //5 courses are available in the Major Game and Mobile Development
			break;
		}
		case 5: {
			
			major_choice = softEng;
			System.out.println(major_choice.getName()+" Major");
			softEng.Display();
			total_credit += 4*subject_credit; //4 courses are available in the Major Software Engineering
			break;
		}
		default:System.out.println("Wrong Input");
		}
		System.out.println();
		
		//Calculating Electives Required
		int remaining_credit = bcs.getCredit() - total_credit;//Remaining Credit points required to reach the minimum target
		int elective_count = remaining_credit/subject_credit ; //Number of electives required to reach the minimum
		
		//Choosing Electives
		System.out.println("Inorder to complete the enrolment, please select the elective subjects from the list. ");
		System.out.println();
		System.out.println("Elective Subjects");
		for(Subject elective:cEles) {
			System.out.println(elective);
		}
		
		System.out.println();
		
		
		//Available Electives
		Subject[] cEles_available = new Subject[cEles.length];
		Subject[] major_Subjects = major_choice.getMCore();//Subjects in the selected Major
		
		for(int i=0;i<cEles.length;i++) {
			int flag = 0; // To keep count 
			for(Subject major:major_Subjects) {
				if(!(cEles[i].getCode().equals(major.getCode()))) {
					flag++;
				}
			}
			if(flag==major_Subjects.length) {
				cEles_available[i] = cEles[i];
			}else {
				cEles_available[i] = new Subject("null","null",0);//Adding a blank Subject to the available electives list, if flag is not equal to number of subjects in the major selected 
			}
		}
		
		//Adding Electives chosen by the student
		Subject[] elective_array = new Subject[elective_count+1];
		
		
		int elective_index = elective_count; //index of the elective array initialized to the number of electives required
		int elective_selected = 0;//Total number of electives selected by the student
		
		//while loop starts to check if the minimum number of electives is selected
		while(elective_count>0) {
			System.out.println("Please select "+elective_count+" more elective subjects: ");
			String elective_choice = sc.nextLine();
			if(elective_choice.length()==7) { //Only One Elective is selected at a time
				for(Subject elective:cEles_available) {
					if(elective_choice.equals(elective.getCode())){
						elective_array[elective_index - elective_count] = elective;
			
						elective_count--; //Decrementing elective count
						total_credit += subject_credit; //Incrementing credit points earned
						elective_selected++;
						
					}else {
						continue;
					}
				}
			}else if(elective_choice.length()==16){ //When two electives are selected with a comma and space 
				
				String elective_choice_1 = elective_choice.substring(0, 7); //Taking the subject codes separately
				String elective_choice_2 = elective_choice.substring(9, 16);
				for(Subject elective:cEles_available) {
					if(elective_choice_1.equals(elective.getCode())&&!(elective_choice_2.equals(elective.getCode()))) {
						
						elective_array[elective_index - elective_count] = elective;
						
						elective_count--;
						total_credit += subject_credit;
						elective_selected++;
						
					}else if(elective_choice_2.equals(elective.getCode())&&!(elective_choice_1.equals(elective.getCode()))){
						
						elective_array[elective_index - elective_count] = elective;
						
						elective_count--;
						total_credit += subject_credit;
						elective_selected++;
						
					}else if(elective_choice_1.equals(elective.getCode())&&elective_choice_2.equals(elective.getCode())){
						
						elective_array[elective_index - elective_count] = elective;
						elective_count--;
						
						elective_array[elective_index-elective_count] = elective;
						elective_count--;
						
						total_credit += subject_credit;
						elective_selected++;
						
					}else {
						
						continue;
					}
				}
			}else {
				
				break;
			}
			
			
		}
		
		System.out.println();
		System.out.println();
		
		//Printing the student Details
		System.out.println("Congratulations. You had completed the enrolment to Bachelor of Computer Science course. ");
		System.out.println("--------------------");
		System.out.println(S1);
		System.out.println();
		//Print Core Subjects
		System.out.println("Cores");
		for(Subject core: cCores) {
			System.out.println(core);
		}
		System.out.println();
		
		
		//Print Major Courses
		System.out.println("Major : "+major_choice.getName());
		major_choice.Display();
		System.out.println();
		
		
		//Print Electives
		System.out.println("Electives :");
		for(int i=0;i<elective_selected;i++) {
			System.out.println(elective_array[i]);
		}
		System.out.println("-----------------");
		System.out.println();
		
		System.out.println("Total Enrolled Credit Points : "+total_credit+"pt");
		sc.close();
		

	}

}

//Student Class
class Student {
	
	//Fields
	private String name;
	private int number;
	private String gender;
	private String dob;
	
	//Public setter method for name
	public void setName(String name) {
		this.name = name;
	}
	
	//Public setter method for number
	public void setNumber(int number) {
		this.number = number;
	}
	
	//public setter method for gender
	public void setGender(String gender) {
		this.gender = gender;
	}
	
	//public setter method for Date of Birth
	public void setDob(String dob) {
		this.dob = dob;
	}
	
	
	//Print Method
	@Override
	public String toString() {
		return "Student : "+name+" ("+number+", "+gender+", "+dob+" )";
	}

}

//Subject Class
class Subject {
	
	////Fields
	private String name;
	private String code;
	private int credit;
	
	//Constructor method
	public Subject(String code, String name, int credit) {
		this.code = code;
		this.name = name;
		this.credit = credit;
	}
	
	//public getter method for name
	public String getName() {
		return name;
	}

	//public setter method for name
	public void setName(String name) {
		this.name = name;
	}

	//public getter method for code
	public String getCode() {
		return code;
	}

	
	

	@Override
	public String toString() {
		return code+" ("+name+", "+credit+"pt)";
	}
}

//Major Class
class Major {
	
	////Fields
	private String name;
	private Subject[] MCore;
	
	//Constructor method
	public Major(String name) {
		this.name = name;
	}
	
	//public setter method for Major Courses
	public void addMCores(Subject[] MCore) {
		this.MCore = MCore;
	}
	
	//public getter method for Major courses
	public Subject[] getMCore() {
		return MCore;
	}
	
	//public getter method for name
	public String getName() {
		return name;
	}
	
	//public method for displaying various courses
	public void Display() {
		
		for(Subject subject:MCore) {
			System.out.println(subject);
		}
	}

}

//Course Class
class Course {
	
	////Fields
	private String name;
	private int credit_min = 144;
	private Major[] major;
	private Subject[] core;
	private Subject[] elective;
	
	//Constructor method
	public Course(String name) {
		this.name = name;
	}
	
	//Public method for adding Core Subjects
	public void addCores(Subject[] core) {
		this.core = core;
	}
	
	//Public method for adding Major 
	public void addMajors(Major[] major) {
		this.major = major;
	}
	
	//Public method for adding elective courses
	public void addElectives(Subject[] elective) {
		this.elective = elective;
	}
	
	//Public method to get minimum credit points required
	public int getCredit() {
		return credit_min;
	}
	//Public method to print by overriding toString() 
	@Override
	public String toString() {
		return "Course : "+name;
	}
	

}