/*
 *  Copyright 2017 The WebRTC project authors. All Rights Reserved.
 *
 *  Use of this source code is governed by a BSD-style license
 *  that can be found in the LICENSE file in the root of the source
 *  tree. An additional intellectual property rights grant can be found
 *  in the file PATENTS.  All contributing project authors may
 *  be found in the AUTHORS file in the root of the source tree.
 */

#import "RTCDtmfSender+Private.h"

#import "NSString+StdString.h"
#import "WebRTC/RTCLogging.h"

#include "rtc_base/timeutils.h"

@implementation RTCDtmfSender {
  rtc::scoped_refptr<webrtc::DtmfSenderInterface> _nativeDtmfSender;
}

- (BOOL)canInsertDtmf {
  return _nativeDtmfSender->CanInsertDtmf();
}

- (BOOL)insertDtmf:(nonnull NSString *)tones
          duration:(NSTimeInterval)duration
      interToneGap:(NSTimeInterval)interToneGap {
  RTC_DCHECK(tones != nil);

  int durationMs = static_cast<int>(duration * rtc::kNumMillisecsPerSec);
  int interToneGapMs = static_cast<int>(interToneGap * rtc::kNumMillisecsPerSec);
  return _nativeDtmfSender->InsertDtmf(
      [NSString stdStringForString:tones], durationMs, interToneGapMs);
}

- (nonnull NSString *)remainingTones {
  return [NSString stringForStdString:_nativeDtmfSender->tones()];
}

- (NSTimeInterval)duration {
  return static_cast<NSTimeInterval>(_nativeDtmfSender->duration()) / rtc::kNumMillisecsPerSec;
}

- (NSTimeInterval)interToneGap {
  return static_cast<NSTimeInterval>(_nativeDtmfSender->inter_tone_gap()) /
      rtc::kNumMillisecsPerSec;
}

- (NSString *)description {
  return [NSString
      stringWithFormat:
          @"RTCDtmfSender {\n  remainingTones: %@\n  duration: %f sec\n  interToneGap: %f sec\n}",
          [self remainingTones],
          [self duration],
          [self interToneGap]];
}

#pragma mark - Private

- (rtc::scoped_refptr<webrtc::DtmfSenderInterface>)nativeDtmfSender {
  return _nativeDtmfSender;
}

- (instancetype)initWithNativeDtmfSender:
        (rtc::scoped_refptr<webrtc::DtmfSenderInterface>)nativeDtmfSender {
  NSParameterAssert(nativeDtmfSender);
  if (self = [super init]) {
    _nativeDtmfSender = nativeDtmfSender;
    RTCLogInfo(@"RTCDtmfSender(%p): created DTMF sender: %@", self, self.description);
  }
  return self;
}
@end