package btools.mapcreator;

import java.io.File;

/**
 * RestrictionCutter writes Restrictions to tiles
 * <p>
 * - cut the way file into 45*30 - pieces
 * - enrich ways with relation information
 *
 * @author ab
 */
public class RestrictionCutter extends MapCreatorBase {
  private WayCutter wayCutter;

  public void init(File outTileDir, WayCutter wayCutter) throws Exception {
    outTileDir.mkdir();
    this.outTileDir = outTileDir;
    this.wayCutter = wayCutter;
  }

  public void finish() throws Exception {
    closeTileOutStreams();
  }

  public void nextRestriction(RestrictionData data) throws Exception {
    int tileIndex = wayCutter.getTileIndexForNid(data.viaNid);
    if (tileIndex != -1) {
      data.writeTo(getOutStreamForTile(tileIndex));
    }
  }

  protected String getNameForTile(int tileIndex) {
    String name = wayCutter.getNameForTile(tileIndex);
    return name.substring(0, name.length() - 3) + "rtl";
  }

}