// Copyright (c) 2010 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 "base/command_line.h"
#include "base/file_path.h"
#include "base/string_number_conversions.h"
#include "base/utf_string_conversions.h"
#include "chrome/browser/ui/browser.h"
#include "chrome/test/in_process_browser_test.h"
#include "chrome/test/ui_test_utils.h"
#include "content/browser/renderer_host/render_view_host.h"
#include "content/browser/speech/speech_input_dispatcher_host.h"
#include "content/browser/speech/speech_input_manager.h"
#include "content/browser/tab_contents/tab_contents.h"
#include "content/common/content_switches.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/WebInputEvent.h"

namespace speech_input {
class FakeSpeechInputManager;
}

// This class does not need to be refcounted (typically done by PostTask) since
// it will outlive the test and gets released only when the test shuts down.
// Disabling refcounting here saves a bit of unnecessary code and the factory
// method can return a plain pointer below as required by the real code.
DISABLE_RUNNABLE_METHOD_REFCOUNT(speech_input::FakeSpeechInputManager);

namespace speech_input {

const char* kTestResult = "Pictures of the moon";

class FakeSpeechInputManager : public SpeechInputManager {
 public:
  FakeSpeechInputManager()
      : caller_id_(0),
        delegate_(NULL),
        did_cancel_all_(false),
        send_fake_response_(true) {
  }

  std::string grammar() {
    return grammar_;
  }

  bool did_cancel_all() {
    return did_cancel_all_;
  }

  void set_send_fake_response(bool send) {
    send_fake_response_ = send;
  }

  // SpeechInputManager methods.
  virtual void StartRecognition(Delegate* delegate,
                                int caller_id,
                                int render_process_id,
                                int render_view_id,
                                const gfx::Rect& element_rect,
                                const std::string& language,
                                const std::string& grammar,
                                const std::string& origin_url) {
    VLOG(1) << "StartRecognition invoked.";
    EXPECT_EQ(0, caller_id_);
    EXPECT_EQ(NULL, delegate_);
    caller_id_ = caller_id;
    delegate_ = delegate;
    grammar_ = grammar;
    if (send_fake_response_) {
      // Give the fake result in a short while.
      MessageLoop::current()->PostTask(FROM_HERE, NewRunnableMethod(this,
          &FakeSpeechInputManager::SetFakeRecognitionResult));
    }
  }
  virtual void CancelRecognition(int caller_id) {
    VLOG(1) << "CancelRecognition invoked.";
    EXPECT_EQ(caller_id_, caller_id);
    caller_id_ = 0;
    delegate_ = NULL;
  }
  virtual void StopRecording(int caller_id) {
    VLOG(1) << "StopRecording invoked.";
    EXPECT_EQ(caller_id_, caller_id);
    // Nothing to do here since we aren't really recording.
  }
  virtual void CancelAllRequestsWithDelegate(Delegate* delegate) {
    VLOG(1) << "CancelAllRequestsWithDelegate invoked.";
    // delegate_ is set to NULL if a fake result was received (see below), so
    // check that delegate_ matches the incoming parameter only when there is
    // no fake result sent.
    EXPECT_TRUE(send_fake_response_ || delegate_ == delegate);
    did_cancel_all_ = true;
  }

 private:
  void SetFakeRecognitionResult() {
    if (caller_id_) {  // Do a check in case we were cancelled..
      VLOG(1) << "Setting fake recognition result.";
      delegate_->DidCompleteRecording(caller_id_);
      SpeechInputResultArray results;
      results.push_back(SpeechInputResultItem(ASCIIToUTF16(kTestResult), 1.0));
      delegate_->SetRecognitionResult(caller_id_, results);
      delegate_->DidCompleteRecognition(caller_id_);
      caller_id_ = 0;
      delegate_ = NULL;
      VLOG(1) << "Finished setting fake recognition result.";
    }
  }

  int caller_id_;
  Delegate* delegate_;
  std::string grammar_;
  bool did_cancel_all_;
  bool send_fake_response_;
};

class SpeechInputBrowserTest : public InProcessBrowserTest {
 public:
  // InProcessBrowserTest methods
  virtual void SetUpCommandLine(CommandLine* command_line) {
    EXPECT_TRUE(!command_line->HasSwitch(switches::kDisableSpeechInput));
  }

  GURL testUrl(const FilePath::CharType* filename) {
    const FilePath kTestDir(FILE_PATH_LITERAL("speech"));
    return ui_test_utils::GetTestUrl(kTestDir, FilePath(filename));
  }

 protected:
  void LoadAndStartSpeechInputTest(const FilePath::CharType* filename) {
    // The test page calculates the speech button's coordinate in the page on
    // load & sets that coordinate in the URL fragment. We send mouse down & up
    // events at that coordinate to trigger speech recognition.
    GURL test_url = testUrl(filename);
    ui_test_utils::NavigateToURL(browser(), test_url);

    WebKit::WebMouseEvent mouse_event;
    mouse_event.type = WebKit::WebInputEvent::MouseDown;
    mouse_event.button = WebKit::WebMouseEvent::ButtonLeft;
    mouse_event.x = 0;
    mouse_event.y = 0;
    mouse_event.clickCount = 1;
    TabContents* tab_contents = browser()->GetSelectedTabContents();
    tab_contents->render_view_host()->ForwardMouseEvent(mouse_event);
    mouse_event.type = WebKit::WebInputEvent::MouseUp;
    tab_contents->render_view_host()->ForwardMouseEvent(mouse_event);
  }

  void RunSpeechInputTest(const FilePath::CharType* filename) {
    LoadAndStartSpeechInputTest(filename);

    // The fake speech input manager would receive the speech input
    // request and return the test string as recognition result. The test page
    // then sets the URL fragment as 'pass' if it received the expected string.
    TabContents* tab_contents = browser()->GetSelectedTabContents();
    ui_test_utils::WaitForNavigations(&tab_contents->controller(), 1);
    EXPECT_EQ("pass", browser()->GetSelectedTabContents()->GetURL().ref());
  }

  // InProcessBrowserTest methods.
  virtual void SetUpInProcessBrowserTestFixture() {
    fake_speech_input_manager_.set_send_fake_response(true);
    speech_input_manager_ = &fake_speech_input_manager_;

    // Inject the fake manager factory so that the test result is returned to
    // the web page.
    SpeechInputDispatcherHost::set_manager_accessor(&fakeManagerAccessor);
  }

  virtual void TearDownInProcessBrowserTestFixture() {
    speech_input_manager_ = NULL;
  }

  // Factory method.
  static SpeechInputManager* fakeManagerAccessor() {
    return speech_input_manager_;
  }

  FakeSpeechInputManager fake_speech_input_manager_;

  // This is used by the static |fakeManagerAccessor|, and it is a pointer
  // rather than a direct instance per the style guide.
  static SpeechInputManager* speech_input_manager_;
};

SpeechInputManager* SpeechInputBrowserTest::speech_input_manager_ = NULL;

// Marked as DISABLED due to http://crbug.com/51337
//
// TODO(satish): Once this flakiness has been fixed, add a second test here to
// check for sending many clicks in succession to the speech button and verify
// that it doesn't cause any crash but works as expected. This should act as the
// test for http://crbug.com/59173
//
// TODO(satish): Similar to above, once this flakiness has been fixed add
// another test here to check that when speech recognition is in progress and
// a renderer crashes, we get a call to
// SpeechInputManager::CancelAllRequestsWithDelegate.
//
// Marked as DISABLED due to http://crbug.com/71227
#if defined(GOOGLE_CHROME_BUILD)
#define MAYBE_TestBasicRecognition DISABLED_TestBasicRecognition
#else
#define MAYBE_TestBasicRecognition TestBasicRecognition
#endif
IN_PROC_BROWSER_TEST_F(SpeechInputBrowserTest, MAYBE_TestBasicRecognition) {
  RunSpeechInputTest(FILE_PATH_LITERAL("basic_recognition.html"));
  EXPECT_TRUE(fake_speech_input_manager_.grammar().empty());
}

// Marked as FLAKY due to http://crbug.com/51337
// Marked as DISALBED due to http://crbug.com/71227
#if defined(GOOGLE_CHROME_BUILD)
#define MAYBE_GrammarAttribute DISABLED_GrammarAttribute
#else
#define MAYBE_GrammarAttribute GrammarAttribute
#endif
IN_PROC_BROWSER_TEST_F(SpeechInputBrowserTest, MAYBE_GrammarAttribute) {
  RunSpeechInputTest(FILE_PATH_LITERAL("grammar_attribute.html"));
  EXPECT_EQ("http://example.com/grammar.xml",
            fake_speech_input_manager_.grammar());
}

// Marked as DISABLED due to http://crbug.com/71227
IN_PROC_BROWSER_TEST_F(SpeechInputBrowserTest, DISABLED_TestCancelAll) {
  // The test checks that the cancel-all callback gets issued when a session
  // is pending, so don't send a fake response.
  fake_speech_input_manager_.set_send_fake_response(false);

  LoadAndStartSpeechInputTest(FILE_PATH_LITERAL("basic_recognition.html"));

  // Make the renderer crash. This should trigger SpeechInputDispatcherHost to
  // cancel all pending sessions.
  GURL test_url("about:crash");
  ui_test_utils::NavigateToURL(browser(), test_url);

  EXPECT_TRUE(fake_speech_input_manager_.did_cancel_all());
}

}  // namespace speech_input