package sudoku;

import static org.junit.jupiter.api.Assertions.assertEquals;

import java.io.ByteArrayInputStream;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Scanner;

import org.junit.jupiter.api.Test;

public class AppTest {

    @Test
    public void testExample() {
        // Simulate user input with proper line endings
        // First 1 is to select the int type of Symboles and after, Symboles are entered
        // (1 to 16)
        String simulatedInput = "1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n";
        System.setIn(new ByteArrayInputStream(simulatedInput.getBytes()));

        // Create a new Sudoku
        Sudoku sudoku = new Sudoku(16);
        sudoku.getGrille().askSetSymbolesPossibles(1, new Scanner(System.in)); // Pass the type of symbol and scanner

        // Verify the symbols
        ArrayList<Symbole> expectedSymbols = new ArrayList<>(Arrays.asList(
                Symbole.of(1),
                Symbole.of(2),
                Symbole.of(3),
                Symbole.of(4),
                Symbole.of(5),
                Symbole.of(6),
                Symbole.of(7),
                Symbole.of(8),
                Symbole.of(9),
                Symbole.of(10),
                Symbole.of(11),
                Symbole.of(12),
                Symbole.of(13),
                Symbole.of(14),
                Symbole.of(15),
                Symbole.of(16)));
        assertEquals(expectedSymbols, sudoku.getGrille().getSymbolesPossibles());

        // Cleanup
        System.setIn(System.in);

        int taille = 16;
        for (int i = 0; i < taille; i++) {
            sudoku.getGrille().setCase(i, i, expectedSymbols.get(i));
        }

        sudoku.getGrille().creerBlocCarre();

        sudoku.ajouterContrainte(new ContrainteLigne());
        sudoku.ajouterContrainte(new ContrainteColonne());
        sudoku.ajouterContrainte(new ContrainteBloc());

        System.out.println(sudoku.getGrille().toString());

        Resolveur resolveur = new ResolveurBacktraceSimple();
        resolveur.resoudre(sudoku, false);
        System.out.println("Sudoku résolu :");
        System.out.println(sudoku.getGrille().toString());
    }
}