//Samantha Kate S. Hilario	180105

import java.io.*;
import java.util.*;

class MarlinUniversityGradeApp
{
	public static void main(String[] args) throws Exception
	{
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

		System.out.println("Enter file name of grading system to read [include file type]: ");
		String fileName = br.readLine();
		GradingSystem gradeSys = new GradingSystem();
		gradeSys.loadGradingSystem(fileName);

		/*for(GradeEquivalent ge: gradeSys.getGradeEqual()) //check if data is stored
		{
			System.out.print(ge.getMin() + " ");
			System.out.print(ge.getMax() + " = ");
			System.out.print(ge.getLetter());
			System.out.println();
		}*/

		System.out.println("Enter file name of prof. grades to read [include file type]: ");
		String recordName = br.readLine();
		ProfGrades studentDataGrade = new ProfGrades();
		studentDataGrade.readProfGrades(recordName);

		/*for(StudentRecord sr : studentDataGrade.getStudentData()) //check if data is stored
		{
			System.out.print(sr.getStudentNo() + " => ");
			System.out.print(sr.getGrade());
			System.out.println();
		}*/

	//switch of numerical to letter grade
		TreeMap<String, String> map = new TreeMap<>();
		for(StudentRecord sr : studentDataGrade.getStudentData())
		{
			String key = sr.getStudentNo();

			for(GradeEquivalent ge : gradeSys.getGradeEqual())
			{
				if(sr.getGrade() >= ge.getMin() && sr.getGrade() <= ge.getMax())
				{
					String updatedGrade = ge.getLetter();
					map.put(key, updatedGrade);
				}
			}
		}

	//User enters student number
		String response;
		do{
			System.out.println("Enter student number: ");
			String findStudentID = br.readLine();

			if(!map.containsKey(findStudentID)) //checks if student # exists or no
				System.out.println(findStudentID + " does not exist.");
			else
				System.out.println("Final grade is: " + map.get(findStudentID));

			System.out.print("Again? [yes or no]: ");
			response = br.readLine();
		}while(!response.equals("no"));



	//duplicated list + sorted
		/*TreeMap<String, Integer> duplicateMap = new TreeMap<>();
		for(StudentRecord sr : studentDataGrade.getStudentData())
		{
			String ID = sr.getStudentNo();

			if(duplicateMap.get(ID) == null)
			{
				duplicateMap.put(ID, 1);
			}

			else
			{
				int value = duplicateMap.get(ID).intValue();
				value++;
				duplicateMap.put(ID, value);
			}
		}

		System.out.println(duplicateMap);

		System.out.println("Duplicated student # in the " + recordName + ": ");
		for(StudentRecord sr : studentDataGrade.getStudentData())
		{
			if(duplicateMap.get(ID).intValue() >= 2)
			{
				System.out.println(duplicateMap.get(ID));
			}
		}*/

		System.out.println("\nApplication ends.");
	}
}