/*
 * Copyright (C) 2012 Google Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *  * Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *  * Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include "web/SpeechRecognitionClientProxy.h"

#include "core/dom/ExecutionContext.h"
#include "modules/mediastream/MediaStreamTrack.h"
#include "modules/speech/SpeechGrammarList.h"
#include "modules/speech/SpeechRecognition.h"
#include "modules/speech/SpeechRecognitionError.h"
#include "modules/speech/SpeechRecognitionResult.h"
#include "modules/speech/SpeechRecognitionResultList.h"
#include "platform/RuntimeEnabledFeatures.h"
#include "platform/weborigin/SecurityOrigin.h"
#include "public/platform/WebMediaStreamTrack.h"
#include "public/platform/WebSecurityOrigin.h"
#include "public/web/WebSpeechGrammar.h"
#include "public/web/WebSpeechRecognitionHandle.h"
#include "public/web/WebSpeechRecognitionParams.h"
#include "public/web/WebSpeechRecognitionResult.h"
#include "public/web/WebSpeechRecognizer.h"
#include "wtf/PassRefPtr.h"
#include "wtf/PtrUtil.h"
#include <memory>

namespace blink {

SpeechRecognitionClientProxy::~SpeechRecognitionClientProxy() {}

std::unique_ptr<SpeechRecognitionClientProxy>
SpeechRecognitionClientProxy::create(WebSpeechRecognizer* recognizer) {
  return wrapUnique(new SpeechRecognitionClientProxy(recognizer));
}

void SpeechRecognitionClientProxy::start(SpeechRecognition* recognition,
                                         const SpeechGrammarList* grammarList,
                                         const String& lang,
                                         bool continuous,
                                         bool interimResults,
                                         unsigned long maxAlternatives,
                                         MediaStreamTrack* audioTrack) {
  size_t length = grammarList ? static_cast<size_t>(grammarList->length()) : 0U;
  WebVector<WebSpeechGrammar> webSpeechGrammars(length);
  for (unsigned long i = 0; i < length; ++i)
    webSpeechGrammars[i] = grammarList->item(i);

  WebMediaStreamTrack track;
  if (RuntimeEnabledFeatures::mediaStreamSpeechEnabled() && audioTrack)
    track.assign(audioTrack->component());
  WebSpeechRecognitionParams params(
      webSpeechGrammars, lang, continuous, interimResults, maxAlternatives,
      track, WebSecurityOrigin(
                 recognition->getExecutionContext()->getSecurityOrigin()));
  m_recognizer->start(recognition, params, this);
}

void SpeechRecognitionClientProxy::stop(SpeechRecognition* recognition) {
  m_recognizer->stop(recognition, this);
}

void SpeechRecognitionClientProxy::abort(SpeechRecognition* recognition) {
  m_recognizer->abort(recognition, this);
}

void SpeechRecognitionClientProxy::didStartAudio(
    const WebSpeechRecognitionHandle& handle) {
  SpeechRecognition* recognition(handle);
  recognition->didStartAudio();
}

void SpeechRecognitionClientProxy::didStartSound(
    const WebSpeechRecognitionHandle& handle) {
  SpeechRecognition* recognition(handle);
  recognition->didStartSound();
  recognition->didStartSpeech();
}

void SpeechRecognitionClientProxy::didEndSound(
    const WebSpeechRecognitionHandle& handle) {
  SpeechRecognition* recognition(handle);
  recognition->didEndSpeech();
  recognition->didEndSound();
}

void SpeechRecognitionClientProxy::didEndAudio(
    const WebSpeechRecognitionHandle& handle) {
  SpeechRecognition* recognition(handle);
  recognition->didEndAudio();
}

void SpeechRecognitionClientProxy::didReceiveResults(
    const WebSpeechRecognitionHandle& handle,
    const WebVector<WebSpeechRecognitionResult>& newFinalResults,
    const WebVector<WebSpeechRecognitionResult>& currentInterimResults) {
  SpeechRecognition* recognition(handle);

  HeapVector<Member<SpeechRecognitionResult>> finalResultsVector(
      newFinalResults.size());
  for (size_t i = 0; i < newFinalResults.size(); ++i)
    finalResultsVector[i] = Member<SpeechRecognitionResult>(newFinalResults[i]);

  HeapVector<Member<SpeechRecognitionResult>> interimResultsVector(
      currentInterimResults.size());
  for (size_t i = 0; i < currentInterimResults.size(); ++i)
    interimResultsVector[i] =
        Member<SpeechRecognitionResult>(currentInterimResults[i]);

  recognition->didReceiveResults(finalResultsVector, interimResultsVector);
}

void SpeechRecognitionClientProxy::didReceiveNoMatch(
    const WebSpeechRecognitionHandle& handle,
    const WebSpeechRecognitionResult& result) {
  SpeechRecognition* recognition(handle);
  recognition->didReceiveNoMatch(result);
}

void SpeechRecognitionClientProxy::didReceiveError(
    const WebSpeechRecognitionHandle& handle,
    const WebString& message,
    WebSpeechRecognizerClient::ErrorCode code) {
  SpeechRecognition* recognition(handle);
  SpeechRecognitionError::ErrorCode errorCode =
      static_cast<SpeechRecognitionError::ErrorCode>(code);
  recognition->didReceiveError(
      SpeechRecognitionError::create(errorCode, message));
}

void SpeechRecognitionClientProxy::didStart(
    const WebSpeechRecognitionHandle& handle) {
  SpeechRecognition* recognition(handle);
  recognition->didStart();
}

void SpeechRecognitionClientProxy::didEnd(
    const WebSpeechRecognitionHandle& handle) {
  SpeechRecognition* recognition(handle);
  recognition->didEnd();
}

SpeechRecognitionClientProxy::SpeechRecognitionClientProxy(
    WebSpeechRecognizer* recognizer)
    : m_recognizer(recognizer) {}

}  // namespace blink