package sudoku;

import org.checkerframework.checker.units.qual.C;

import java.util.ArrayList;
import java.util.List;

public abstract class Cell {

	protected static int NOSYMBOL = -1;
	protected int symbolIndex;
	protected Block block = null;
	//protected List<Block> blockContainers = null;
	//protected List<Sudoku> sudokuContainers = null;

	public Cell(int symbolIndex) {
		this.symbolIndex = symbolIndex;
	}

	/**
	 * @brief Default constructor, empty square
	 */
	public Cell() {
		this(NOSYMBOL);
	}

	/*

	public Cell(Cell cell) {
		this.symbolIndex = cell.symbolIndex;
		this.sudokuContainers = cell.sudokuContainers;
		this.blockContainers  = cell.blockContainers;
	}

	public Cell(List<Sudoku> sudokuContainers, List<Block> blockContainers) {
		super();
		this.sudokuContainers = new ArrayList<>(sudokuContainers);
		this.blockContainers  = new ArrayList<>(blockContainers);
	}

	 */

	public int getSymbolIndex() {
		return symbolIndex;
	}

	public Block getBlock() {
		return this.block;
	}

	/*
	public List<Block> getBlockContainers() {
		return this.blockContainers;
	}

	public void setBlockContainers(List<Block> block) {
		this.blockContainers = block;
	}

	public List<Sudoku> getSudokuContainers() {
		return this.sudokuContainers;
	}
*/
	// only SudokuFactory and SudokuSerializer should access this
	public void setBlock(Block block) {
		this.block = block;
	}

	/*
	public void setSudokuContainers(List<Sudoku> sudoku) {
		this.sudokuContainers = sudoku;
	}
	*/

	public boolean isEmpty() {
		return this.symbolIndex == Cell.NOSYMBOL;
	}

	public boolean equalsValue(Cell otherCell) {
		return otherCell.getSymbolIndex() == this.getSymbolIndex();
	}

	@Override
	public String toString() {
		StringBuilder sb = new StringBuilder();
		sb.append("| ");
		if (this.symbolIndex != NOSYMBOL){
			sb.append(this.symbolIndex);
		}
		else {
			sb.append(" ");
		}

		sb.append(" |");
		return sb.toString();
	}

}