package com.xxx.zzz.aall.okhttp3ll.internalss.httpnn;

import com.xxx.zzz.aall.okhttp3ll.internalss.Utilaq;

import java.text.DateFormat;
import java.text.ParsePosition;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Locale;


public final class HttpDate {
  
  public static final long MAX_DATE = 253402300799999L;

  
  private static final ThreadLocal<DateFormat> STANDARD_DATE_FORMAT =
      new ThreadLocal<DateFormat>() {
        @Override protected DateFormat initialValue() {
          
          DateFormat rfc1123 = new SimpleDateFormat("EEE, dd MMM yyyy HH:mm:ss 'GMT'", Locale.US);
          rfc1123.setLenient(false);
          rfc1123.setTimeZone(Utilaq.UTC);
          return rfc1123;
        }
      };

  
  private static final String[] BROWSER_COMPATIBLE_DATE_FORMAT_STRINGS = new String[] {
      
      "EEE, dd MMM yyyy HH:mm:ss zzz", 
      "EEEE, dd-MMM-yy HH:mm:ss zzz", 
      "EEE MMM d HH:mm:ss yyyy", 
      
      "EEE, dd-MMM-yyyy HH:mm:ss z",
      "EEE, dd-MMM-yyyy HH-mm-ss z",
      "EEE, dd MMM yy HH:mm:ss z",
      "EEE dd-MMM-yyyy HH:mm:ss z",
      "EEE dd MMM yyyy HH:mm:ss z",
      "EEE dd-MMM-yyyy HH-mm-ss z",
      "EEE dd-MMM-yy HH:mm:ss z",
      "EEE dd MMM yy HH:mm:ss z",
      "EEE,dd-MMM-yy HH:mm:ss z",
      "EEE,dd-MMM-yyyy HH:mm:ss z",
      "EEE, dd-MM-yyyy HH:mm:ss z",

      
      "EEE MMM d yyyy HH:mm:ss z",
  };

  private static final DateFormat[] BROWSER_COMPATIBLE_DATE_FORMATS =
      new DateFormat[BROWSER_COMPATIBLE_DATE_FORMAT_STRINGS.length];

  
  public static Date parse(String value) {
    if (value.length() == 0) {
      return null;
    }

    ParsePosition position = new ParsePosition(0);
    Date result = STANDARD_DATE_FORMAT.get().parse(value, position);
    if (position.getIndex() == value.length()) {
      
      
      return result;
    }
    synchronized (BROWSER_COMPATIBLE_DATE_FORMAT_STRINGS) {
      for (int i = 0, count = BROWSER_COMPATIBLE_DATE_FORMAT_STRINGS.length; i < count; i++) {
        DateFormat format = BROWSER_COMPATIBLE_DATE_FORMATS[i];
        if (format == null) {
          format = new SimpleDateFormat(BROWSER_COMPATIBLE_DATE_FORMAT_STRINGS[i], Locale.US);
          
          
          format.setTimeZone(Utilaq.UTC);
          BROWSER_COMPATIBLE_DATE_FORMATS[i] = format;
        }
        position.setIndex(0);
        result = format.parse(value, position);
        if (position.getIndex() != 0) {
          
          
          
          
          
          return result;
        }
      }
    }
    return null;
  }

  
  public static String format(Date value) {
    return STANDARD_DATE_FORMAT.get().format(value);
  }

  private HttpDate() {
  }
}