// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

#include <time.h>

#include "vm/bootstrap_natives.h"

#include "vm/bigint_operations.h"
#include "vm/native_entry.h"
#include "vm/object.h"
#include "vm/os.h"

namespace dart {

static int32_t kMaxAllowedSeconds = 2100000000;

DEFINE_NATIVE_ENTRY(DateNatives_timeZoneName, 1) {
  GET_NATIVE_ARGUMENT(Integer, dart_seconds, arguments->At(0));
  int64_t seconds = dart_seconds.AsInt64Value();
  if (seconds < 0 || seconds > kMaxAllowedSeconds) {
    GrowableArray<const Object*> args;
    args.Add(&dart_seconds);
    Exceptions::ThrowByType(Exceptions::kIllegalArgument, args);
  }
  const char* name = OS::GetTimeZoneName(seconds);
  const String& dart_name = String::Handle(String::New(name));
  arguments->SetReturn(dart_name);
}


DEFINE_NATIVE_ENTRY(DateNatives_timeZoneOffsetInSeconds, 1) {
  GET_NATIVE_ARGUMENT(Integer, dart_seconds, arguments->At(0));
  int64_t seconds = dart_seconds.AsInt64Value();
  if (seconds < 0 || seconds > kMaxAllowedSeconds) {
    GrowableArray<const Object*> args;
    args.Add(&dart_seconds);
    Exceptions::ThrowByType(Exceptions::kIllegalArgument, args);
  }
  int offset = OS::GetTimeZoneOffsetInSeconds(seconds);
  const Integer& dart_offset = Integer::Handle(Integer::New(offset));
  arguments->SetReturn(dart_offset);
}


DEFINE_NATIVE_ENTRY(DateNatives_localTimeZoneAdjustmentInSeconds, 0) {
  int adjustment = OS::GetLocalTimeZoneAdjustmentInSeconds();
  const Integer& dart_adjustment = Integer::Handle(Integer::New(adjustment));
  arguments->SetReturn(dart_adjustment);
}


DEFINE_NATIVE_ENTRY(DateNatives_currentTimeMillis, 0) {
  const Integer& time = Integer::Handle(
      Integer::New(OS::GetCurrentTimeMillis()));
  arguments->SetReturn(time);
}

}  // namespace dart