package btools.server;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.net.URLDecoder;

public class CgiUpload {
  public static void main(String[] args) {
    try {
      _main(args);
    } catch (Exception e) {
      System.out.println("unexpected exception: " + e);
    }
  }

  private static void _main(String[] args) throws Exception {
    String htmlTemplate = args[0];
    String customeProfileDir = args[1];

    String id = "" + System.currentTimeMillis();


    // cgi-header
    System.out.println("Content-type: text/html");
    System.out.println();

    // write the post message to a file
    BufferedWriter bw = new BufferedWriter(
      new OutputStreamWriter(
        new FileOutputStream(customeProfileDir + "/" + id + ".brf")));
    BufferedReader ir = new BufferedReader(new InputStreamReader(System.in));
    String postData = ir.readLine();
    String[] coordValues = new String[4];
    if (postData != null) {
      int coordsIdx = postData.indexOf("coords=");
      if (coordsIdx >= 0) {
        int coordsEnd = postData.indexOf('&');
        if (coordsEnd >= 0) {
          String coordsString = postData.substring(coordsIdx + 7, coordsEnd);
          postData = postData.substring(coordsEnd + 1);
          int pos = 0;
          for (int idx = 0; idx < 4; idx++) {
            int p = coordsString.indexOf('_', pos);
            coordValues[idx] = coordsString.substring(pos, p);
            pos = p + 1;
          }
        }
      }
      int sepIdx = postData.indexOf('=');
      if (sepIdx >= 0) postData = postData.substring(sepIdx + 1);
      postData = URLDecoder.decode(postData, "ISO-8859-1");
      bw.write(postData);
    }
    bw.close();

    // echo the template with a custom select item
    BufferedReader br = new BufferedReader(
      new InputStreamReader(
        new FileInputStream(htmlTemplate)));

    for (; ; ) {
      String line = br.readLine();
      if (line == null) break;
      if (line.indexOf("<!-- sample profiles -->") >= 0) {
        line = "    <option value=\"../customprofiles/" + id + "\">custom</option>";
      } else if (line.indexOf("paste your profile here") >= 0) {
        System.out.println("<textarea type=\"text\" name=\"profile\" rows=30 cols=100>");
        System.out.println(postData);
        line = "</textarea>";
      } else {
        line = replaceCoord(line, "lonfrom", coordValues[0]);
        line = replaceCoord(line, "latfrom", coordValues[1]);
        line = replaceCoord(line, "lonto", coordValues[2]);
        line = replaceCoord(line, "latto", coordValues[3]);
      }

      System.out.println(line);
    }
    br.close();
  }

  private static String replaceCoord(String line, String name, String value) {
    String inputTag = "<td><input type=\"text\" name=\"" + name + "\"";
    if (line.indexOf(inputTag) >= 0) {
      return inputTag + " value=\"" + value + "\"></td>";
    }
    return line;
  }
}