#import <Foundation/NSCalendar.h>
#import <Foundation/NSDate.h>
#import <Foundation/NSDateFormatter.h>
#import <Foundation/NSDictionary.h>
#import <Foundation/NSLocale.h>
#import <Foundation/NSTimeZone.h>
#import "Testing.h"

#if	defined(GS_USE_ICU)
#define	NSLOCALE_SUPPORTED	GS_USE_ICU
#else
#define	NSLOCALE_SUPPORTED	1 /* Assume Apple support */
#endif

static NSDateComponents *
timeFromString(NSString *s)
{
  NSDateFormatter   *dateFormatter;
  NSDate            *date;
  NSCalendar        *calendar;
  NSDateComponents  *time;

  dateFormatter = [[NSDateFormatter alloc] init];
  [dateFormatter setDateFormat: @"HH:mm:ss"];

  date = [dateFormatter dateFromString: s];

  calendar = [[NSCalendar alloc] 
    initWithCalendarIdentifier: NSGregorianCalendar];

  time = [calendar components: (NSCalendarUnitHour | NSCalendarUnitMinute
                               | NSCalendarUnitSecond) 
                     fromDate: date];

  RELEASE(calendar);
  RELEASE(dateFormatter);

  return time;
}

int main(void)
{
  NSDateFormatter *inFmt;
  NSDateFormatter *outFmt;
  NSDate *date;
  NSString *str;
  NSLocale *locale;
  NSCalendar *cal;
  unsigned int components;
  NSInteger year;
  
  START_SET("NSDateFormatter")
  if (!NSLOCALE_SUPPORTED)
    SKIP("NSLocale not supported\nThe ICU library was not available when GNUstep-base was built")

    [NSTimeZone setDefaultTimeZone: [NSTimeZone timeZoneWithName: @"GMT"]];
    
    inFmt = [[NSDateFormatter alloc] init];
    [inFmt setDateFormat: @"yyyy-MM-dd 'at' HH:mm"];
    date = [inFmt dateFromString: @"2011-01-27 at 17:36"];
    outFmt = [[NSDateFormatter alloc] init];
    [outFmt setLocale: [[NSLocale alloc] initWithLocaleIdentifier: @"pt_BR"]];
    [outFmt setDateFormat: @"HH:mm 'on' EEEE MMMM d"];
    str = [outFmt stringFromDate: date];
    PASS_EQUAL(str, @"17:36 on quinta-feira janeiro 27",
      "Output has the same format as Cocoa.")
    RELEASE(outFmt);
    RELEASE(inFmt);
    
    locale = [[NSLocale alloc] initWithLocaleIdentifier:@"en_GB"];
    inFmt = [NSDateFormatter new];
    [inFmt setDateStyle: NSDateFormatterShortStyle];
    [inFmt setTimeStyle: NSDateFormatterNoStyle];
    [inFmt setLocale: locale];
    [inFmt setTimeZone: [NSTimeZone timeZoneWithName: @"GMT"]];
    date = [inFmt dateFromString: @"15/06/1982"];
    PASS_EQUAL([date description], @"1982-06-15 00:00:00 +0000",
      "GMT time zone is correctly accounted for.");
    [inFmt setTimeZone: [NSTimeZone timeZoneWithName: @"EST"]];
    date = [inFmt dateFromString: @"15/06/1982"];
    PASS_EQUAL([date description], @"1982-06-15 05:00:00 +0000",
      "EST time zone is correctly accounted for.");
    RELEASE(inFmt);
    
    cal = [[NSCalendar alloc] initWithCalendarIdentifier: NSGregorianCalendar];
    [cal setTimeZone: [NSTimeZone timeZoneWithName: @"CST"]];
    [cal setLocale: locale];
    components = NSYearCalendarUnit;
    year = [[cal components: components fromDate: date] year];
    inFmt = [NSDateFormatter new];
    [inFmt setLocale: locale];
    [inFmt setDateStyle: NSDateFormatterLongStyle];
    [inFmt setTimeStyle: NSDateFormatterNoStyle];
    str = [inFmt stringFromDate: date];
    PASS (year == 1982, "Year is 1982");
    PASS_EQUAL(str, @"15 June 1982", "Date is formatted correctly.");
    RELEASE(cal);
    RELEASE(inFmt);
    
    str = [NSDateFormatter dateFormatFromTemplate: @"MMMdd"
      options: 0 locale: locale];
    PASS_EQUAL(str, @"dd MMM", "Convert date format as Cocoa.");
    RELEASE(locale);
  
  NSDateComponents	*d = timeFromString(@"23:24:25");
  PASS(d != nil && [d hour] == 23 && [d minute] == 24 && [d second] == 25,
    "parsing 23:24:25 is OK")

  d = timeFromString(@"24:00:00");
  PASS(d != nil && [d hour] == 0 && [d minute] == 0 && [d second] == 0,
    "parsing 24:00:00 gives zero hour, minute and second")

  END_SET("NSDateFormatter")

  return 0;
}