package com.mattrixwv.adventOfCode24;


import java.security.InvalidParameterException;
import java.util.List;
import java.util.Scanner;
import java.util.StringJoiner;

import com.mattrixwv.adventOfCode24.days.Problem;
import com.mattrixwv.adventOfCode24.days.Problem1;
import com.mattrixwv.adventOfCode24.days.Problem2;
import com.mattrixwv.adventOfCode24.days.Problem3;
import com.mattrixwv.adventOfCode24.days.Problem4;
import com.mattrixwv.adventOfCode24.days.Problem5;
import com.mattrixwv.adventOfCode24.days.Problem6;


public class ProblemSelector{
	private static final Scanner input = new Scanner(System.in);
	//Holds the valid problem numbers
	protected static final List<Integer> PROBLEM_NUMBERS = List.of(0, 1, 2, 3, 4, 5, 6);


	private ProblemSelector(){
		throw new IllegalStateException("Utility class");
	}


	//Returns the problem corresponding to the given problem number
	public static Problem getProblem(Integer dayNumber){
		Problem day = null;
		switch(dayNumber){
			case 1  : day = new Problem1(); break;
			case 2  : day = new Problem2(); break;
			case 3  : day = new Problem3(); break;
			case 4  : day = new Problem4(); break;
			case 5  : day = new Problem5(); break;
			case 6  : day = new Problem6(); break;
			default: throw new InvalidParameterException();
		}
		return day;
	}

	//Print the description of a problem
	public static void printDescription(Integer problemNumber){
		//Get the problem
		Problem day = getProblem(problemNumber);
		//Print the problem's description
		System.out.println(day.getDescription());
	}

	//Solve a problem
	public static void solveProblem(Integer problemNumber){
		//Get the problem
		Problem problem = getProblem(problemNumber);
		System.out.println("\n\n\n");
		//Print the problem description
		System.out.println(problem.getDescription());
		//Solve the problem
		problem.runSolution();
		//Print the results
		System.out.println(problem.getResult());
		System.out.println("\n\n\n");
	}

	//Get a valid problem number from a user
	public static Integer getProblemNumber(){
		Integer problemNumber = 0;
		System.out.print("Enter a problem number: ");
		problemNumber = input.nextInt();
		while(!PROBLEM_NUMBERS.contains(problemNumber)){
			System.out.print("That is an invalid problem number!\n Enter a problem number: ");
			problemNumber = input.nextInt();
		}
		return problemNumber;
	}

	//List all valid problem numbers
	public static void listProblems(){
		StringJoiner joiner = new StringJoiner(", ");
		for(Integer num : PROBLEM_NUMBERS){
			joiner.add(num.toString());
		}
		System.out.println(joiner.toString());
		System.out.println();
	}
}