/**
 * Girl Genius is a webcomic by Phil Foglio about a lost princess.
 *
 * @author: Josh Snider
 * @TODO: This code is bad and I feel bad.
 */

public class GirlGeniusImageGetter extends ComicGetter{

  public static String title = "http://www.girlgeniusonline.com/ggmain/strips/ggmain";//+.jpg

  public static void main(String[] args){
    String date = getStartDate();
    try {
      while (true) {
        String fileLoc = title + date + ".jpg";
        String saveName = fileLoc.substring(52);
        CommonFunctions.saveImage(fileLoc, saveName);
        date = getNextDay(date);
        date = getNextDay(date);
        fileLoc = title + date + ".jpg";
        saveName = fileLoc.substring(52);
        CommonFunctions.saveImage(fileLoc, saveName);
        date = getNextDay(date);
        date = getNextDay(date);
        fileLoc = title + date + ".jpg";
        saveName = fileLoc.substring(52);
        CommonFunctions.saveImage(fileLoc, saveName);
        date = getNextDay(date);
        date = getNextDay(date);
        date = getNextDay(date);
      }
    } catch(Exception e){
      System.out.println(date);
    }
  }

  public static String getStartDate(){
    return "20100104";
  }

  public static String getNextDate(String date){
    do {
      date = getNextDay(date);
    }
    while (dateAlgorithm(date)!=1&&dateAlgorithm(date)!=3&&dateAlgorithm(date)!=5);
    return date;
  }

  public static int dateAlgorithm(String date){
    //TODO Figure out how this works and add comments.
    int year = Integer.parseInt(date.substring(0, 4));
    int month = Integer.parseInt(date.substring(4, 6));
    int day = Integer.parseInt(date.substring(6));
    int Y = year;
    if (month == 1 || month == 2) {
      Y = year - 1;
    }
    int d = day;
    int m = ((month + 9) % 12) + 1;
    int y = Integer.parseInt(Integer.toString(year).substring(2));
    int c = Integer.parseInt(Integer.toString(year).substring(0, 2));
    return (int) ((d + (2.6 * m - 0.2) + (5 * y / 4) - (7 * c / 4)) % 7);
  }
}