// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "chrome/browser/ui/media_stream_infobar_delegate.h"

#include "base/logging.h"
#include "base/utf_string_conversions.h"
#include "chrome/browser/api/infobars/infobar_service.h"
#include "chrome/browser/content_settings/tab_specific_content_settings.h"
#include "chrome/browser/google/google_util.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/common/url_constants.h"
#include "content/public/browser/web_contents.h"
#include "googleurl/src/gurl.h"
#include "grit/generated_resources.h"
#include "grit/theme_resources.h"
#include "ui/base/l10n/l10n_util.h"
#include "ui/base/resource/resource_bundle.h"

MediaStreamInfoBarDelegate::~MediaStreamInfoBarDelegate() {}

// static
bool MediaStreamInfoBarDelegate::Create(
    content::WebContents* web_contents,
    const content::MediaStreamRequest& request,
    const content::MediaResponseCallback& callback) {
  Profile* profile =
      Profile::FromBrowserContext(web_contents->GetBrowserContext());
  TabSpecificContentSettings* content_settings =
      TabSpecificContentSettings::FromWebContents(web_contents);
  scoped_ptr<MediaStreamDevicesController> controller(
      new MediaStreamDevicesController(profile, content_settings,
                                       request, callback));
  if (controller->DismissInfoBarAndTakeActionOnSettings())
    return false;

  InfoBarService* infobar_service =
      InfoBarService::FromWebContents(web_contents);
  InfoBarDelegate* old_infobar = NULL;
  for (size_t i = 0; i < infobar_service->GetInfoBarCount(); ++i) {
    old_infobar = infobar_service->GetInfoBarDelegateAt(i)->
        AsMediaStreamInfoBarDelegate();
    if (old_infobar)
      break;
  }
  scoped_ptr<InfoBarDelegate> infobar(
      new MediaStreamInfoBarDelegate(infobar_service, controller.release()));
  if (old_infobar)
    infobar_service->ReplaceInfoBar(old_infobar, infobar.Pass());
  else
    infobar_service->AddInfoBar(infobar.Pass());

  return true;
}

void MediaStreamInfoBarDelegate::InfoBarDismissed() {
  // Deny the request if the infobar was closed with the 'x' button, since
  // we don't want WebRTC to be waiting for an answer that will never come.
  controller_->Deny(false);
}

gfx::Image* MediaStreamInfoBarDelegate::GetIcon() const {
  return &ResourceBundle::GetSharedInstance().GetNativeImageNamed(
      controller_->has_video() ?
          IDR_INFOBAR_MEDIA_STREAM_CAMERA : IDR_INFOBAR_MEDIA_STREAM_MIC);
}

InfoBarDelegate::Type MediaStreamInfoBarDelegate::GetInfoBarType() const {
  return PAGE_ACTION_TYPE;
}

MediaStreamInfoBarDelegate*
    MediaStreamInfoBarDelegate::AsMediaStreamInfoBarDelegate() {
  return this;
}

string16 MediaStreamInfoBarDelegate::GetMessageText() const {
  int message_id = IDS_MEDIA_CAPTURE_AUDIO_AND_VIDEO;
  if (!controller_->has_audio())
    message_id = IDS_MEDIA_CAPTURE_VIDEO_ONLY;
  else if (!controller_->has_video())
    message_id = IDS_MEDIA_CAPTURE_AUDIO_ONLY;
  return l10n_util::GetStringFUTF16(
      message_id, UTF8ToUTF16(controller_->GetSecurityOriginSpec()));
}

string16 MediaStreamInfoBarDelegate::GetButtonLabel(
    InfoBarButton button) const {
  return l10n_util::GetStringUTF16((button == BUTTON_OK) ?
      IDS_MEDIA_CAPTURE_ALLOW : IDS_MEDIA_CAPTURE_DENY);
}

bool MediaStreamInfoBarDelegate::Accept() {
  controller_->Accept(true);
  return true;
}

bool MediaStreamInfoBarDelegate::Cancel() {
  controller_->Deny(true);
  return true;
}

string16 MediaStreamInfoBarDelegate::GetLinkText() const {
  return l10n_util::GetStringUTF16(IDS_LEARN_MORE);
}

bool MediaStreamInfoBarDelegate::LinkClicked(
    WindowOpenDisposition disposition) {
  content::OpenURLParams params(
      google_util::AppendGoogleLocaleParam(
          GURL(chrome::kMediaAccessLearnMoreUrl)),
      content::Referrer(),
      (disposition == CURRENT_TAB) ? NEW_FOREGROUND_TAB : disposition,
      content::PAGE_TRANSITION_LINK,
      false);
  owner()->GetWebContents()->OpenURL(params);

  return false;  // Do not dismiss the info bar.
}

MediaStreamInfoBarDelegate::MediaStreamInfoBarDelegate(
    InfoBarService* infobar_service,
    MediaStreamDevicesController* controller)
    : ConfirmInfoBarDelegate(infobar_service),
      controller_(controller) {
  DCHECK(controller_.get());
  DCHECK(controller_->has_audio() || controller_->has_video());
}