package prog2_aufgabe12;


import java.awt.*;
import java.util.ArrayList;
import javax.swing.border.LineBorder;
import javax.swing.border.TitledBorder;

public class Knoten implements Comparable<Knoten> {

  public static Color col_unknown = Color.WHITE;
  public static Color col_start = new Color(0, 221, 0);
  public static Color col_ziel = Color.RED;
  public static Color col_openlist = new Color(152, 251, 152);
  public static Color col_closedlist = new Color(175, 238, 238);
  public static Color col_path = Color.BLUE;;
          
          
  public enum Status {
    unknown, closedList, openList, path, start, ziel
  }
  
  private Status status = Status.unknown;
  public String bez;
  public double x = Double.MAX_VALUE;
  public double y = Double.MAX_VALUE;
  
  private Color background = Color.BLACK;
  
  public double distance2Ziel = Double.MAX_VALUE;
  public double g = Double.MAX_VALUE;
  public double f = Double.MAX_VALUE;
  public double fFest = Double.MAX_VALUE;
  public Knoten prev = null;
  public ArrayList<Kante> next = new ArrayList();
  
  public boolean start = false;
  public boolean ziel = false;

  public Knoten(String bez, double x, double y) {
    this.bez = bez;
    this.x = x;
    this.y = y;
    setStatus(Status.unknown);
  }
  
  
  public void init() {
    distance2Ziel=Double.MAX_VALUE;
    g=Double.MAX_VALUE;
    f=Double.MAX_VALUE;
     prev = null;
  }
  

  public void paint(Graphics g, boolean drawline, double xmin, double diffx, double ymin, double diffy, int width, int height, FontMetrics fontMetrics) {
    int ix, iy;
    Knoten v;

    int ix2, iy2;
    ix = (int) ((x - xmin) * width / diffx);
    iy = (int) ((y - ymin) * height / diffy);

    g.setColor(background);

    if (drawline) {
      Graphics2D g2 = (Graphics2D) g;
      g2.setStroke(new BasicStroke(7.0f));
      g.setColor(Color.YELLOW);
      for (Kante kn : next) {
        v=kn.next;
        ix2 = (int) ((v.x - xmin) * width / diffx);
        iy2 = (int) ((v.y - ymin) * height / diffy);
        g.drawLine(ix, height - iy, ix2, height - iy2);
      }
    } else {
      int h = fontMetrics.getHeight();
      int w = fontMetrics.stringWidth(bez);
      int w2 = w;
      if (h > w2) {
        w2 = h;
      }
      g.fillRect(ix - w2 + (w >> 1), height - (iy + w2 + ((int) (h * 0.35))), w2 << 1, w2 << 1);
      g.setColor(Color.BLACK);
      Graphics2D g2 = (Graphics2D) g;
      g2.setStroke(new BasicStroke(4.0f));
      g.drawRect(ix - w2 + (w >> 1), height - (iy + w2 + ((int) (h * 0.35))), w2 << 1, w2 << 1);
      
      if (start) {
          g.setColor(col_start);
          g.drawRect(ix - w2 + (w >> 1)-5, height - (+5+iy + w2 + ((int) (h * 0.35))), (w2 << 1)+10, (w2 << 1)+10);
      }

      if (ziel) {
          g.setColor(col_ziel);
          g.drawRect(ix - w2 + (w >> 1)-5, height - (+5+iy + w2 + ((int) (h * 0.35))), (w2 << 1)+10, (w2 << 1)+10);
      }
      g.setColor(Color.BLACK);
      g.drawString(bez, ix, height - iy);
    }


  }

  @Override
  public int compareTo(Knoten bn) {
    if (distance2Ziel < bn.distance2Ziel) {
      return -1;
    } else if (distance2Ziel > bn.distance2Ziel) {
      return +1;
    } else {
      return 0;
    }
  }

  public Status getStatus() {
    return status;
  }

  public String toString() {
    return bez;
  }

  

  public void setStatus(Status status) {
    switch (status) {
      case unknown:
        if (!start && !ziel) {
          background = col_unknown;
        }
        this.status = status;
        break;

      case closedList:
        //if (!start && !ziel) {
          background = col_closedlist;
        //}
        this.status = status;
        break;
      case openList:
       // if (!start && !ziel) {
          background = col_openlist;
        //}
        this.status = status;
        break;
      case path:
        //if (!start && !ziel) {
          background = col_path;
        //}
        this.status = status;
        break;

      case start:
        background = col_start;
        this.status = status;
        break;
      case ziel:
        background = col_ziel;
        this.status = status;
        break;
    }


  }
}