package kernel.function;
  
  import kernel.Cell;
  import kernel.Formula;

  import kernel.Grid;
  import kernel.LanguageEnum;

  import java.io.Serializable;

  import java.util.HashMap;

  import java.util.Iterator;

  import java.util.List;
  import java.util.Map;
  import java.util.stream.Collectors;

  abstract public class Function implements Formula,Serializable {

      public Map<LanguageEnum, String> names = new HashMap<>();
      public List<Cell> listCells;

      public Function(List<Cell> listCells) {
          this.listCells = listCells;
      }

  
      abstract public Double eval();
  

      public String getDevelopedFormula() {
          return names.get(Grid.language) + "("
                  + this.listCells.stream()
                  .map(Cell::getDevelopedFormula)
                  .collect(Collectors.joining(",")) + ")";
      }
  
      public String toString() {
          return names.get(Grid.language) + "("
                  + this.listCells.stream()
                  .map(Cell::getId)
                  .collect(Collectors.joining(",")) + ")";
      }
  

      public Boolean createCycle(Cell cell) {

          boolean cycle = false;
          if (!this.listCells.contains(cell)) {
              Iterator<Cell> it = listCells.iterator();
              while (it.hasNext() && !cycle) {
                  Cell currentCell = it.next();
                  if (currentCell.containFormula()) {
                      cycle = currentCell.getFormula().createCycle(cell);
                  }
              }
              return cycle;
          } else
              return true;
      }
  
      public List<Cell> getUtilisedCells() {

  		return this.listCells;
  	}

  }