// Copyright 2014 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 <string>

#include "base/command_line.h"
#include "base/files/file_path.h"
#include "base/memory/scoped_ptr.h"
#include "chrome/browser/infobars/infobar_service.h"
#include "chrome/browser/notifications/notification_test_util.h"
#include "chrome/browser/notifications/platform_notification_service_impl.h"
#include "chrome/browser/ui/browser.h"
#include "chrome/browser/ui/tabs/tab_strip_model.h"
#include "chrome/test/base/in_process_browser_test.h"
#include "chrome/test/base/ui_test_utils.h"
#include "components/infobars/core/confirm_infobar_delegate.h"
#include "components/infobars/core/infobar.h"
#include "components/infobars/core/infobar_manager.h"
#include "content/public/common/content_switches.h"
#include "content/public/test/browser_test_utils.h"
#include "net/test/spawned_test_server/spawned_test_server.h"

// -----------------------------------------------------------------------------

// Accept or rejects the first shown confirm infobar. The infobar will be
// responsed to asynchronously, to imitate the behavior of a user.
// TODO(peter): Generalize this class, as it's commonly useful.
class InfoBarResponder : public infobars::InfoBarManager::Observer {
 public:
  InfoBarResponder(Browser* browser, bool accept);
  ~InfoBarResponder() override;

  // infobars::InfoBarManager::Observer overrides.
  void OnInfoBarAdded(infobars::InfoBar* infobar) override;

 private:
  void Respond(ConfirmInfoBarDelegate* delegate);

  InfoBarService* infobar_service_;
  bool accept_;
  bool has_observed_;
};

InfoBarResponder::InfoBarResponder(Browser* browser, bool accept)
    : infobar_service_(InfoBarService::FromWebContents(
            browser->tab_strip_model()->GetActiveWebContents())),
      accept_(accept),
      has_observed_(false) {
  infobar_service_->AddObserver(this);
}

InfoBarResponder::~InfoBarResponder() {
  infobar_service_->RemoveObserver(this);
}

void InfoBarResponder::OnInfoBarAdded(infobars::InfoBar* infobar) {
  if (has_observed_)
    return;

  has_observed_ = true;
  ConfirmInfoBarDelegate* delegate =
      infobar->delegate()->AsConfirmInfoBarDelegate();
  DCHECK(delegate);

  // Respond to the infobar asynchronously, like a person.
  base::MessageLoop::current()->PostTask(
      FROM_HERE,
      base::Bind(
          &InfoBarResponder::Respond, base::Unretained(this), delegate));
}

void InfoBarResponder::Respond(ConfirmInfoBarDelegate* delegate) {
  if (accept_)
    delegate->Accept();
  else
    delegate->Cancel();
}

// -----------------------------------------------------------------------------

class PlatformNotificationServiceBrowserTest : public InProcessBrowserTest {
 public:
  ~PlatformNotificationServiceBrowserTest() override {}

  // InProcessBrowserTest overrides.
  void SetUpCommandLine(base::CommandLine* command_line) override;
  void SetUp() override;
  void SetUpOnMainThread() override;
  void TearDown() override;

 protected:
  // Returns the Platform Notification Service these unit tests are for.
  PlatformNotificationServiceImpl* service() const {
    return PlatformNotificationServiceImpl::GetInstance();
  }

  // Returns the UI Manager on which notifications will be displayed.
  StubNotificationUIManager* ui_manager() const { return ui_manager_.get(); }

  // Navigates the browser to the test page indicated by |path|.
  void NavigateToTestPage(const std::string& path) const;

  // Executes |script| and stores the result as a string in |result|. A boolean
  // will be returned, indicating whether the script was executed successfully.
  bool RunScript(const std::string& script, std::string* result) const;

 private:
  scoped_ptr<StubNotificationUIManager> ui_manager_;
  scoped_ptr<net::SpawnedTestServer> https_server_;
};

// -----------------------------------------------------------------------------

namespace {

const char kTestPageUrl[] =
    "files/notifications/platform_notification_service.html";

}  // namespace

void PlatformNotificationServiceBrowserTest::SetUpCommandLine(
    base::CommandLine* command_line) {
  command_line->AppendSwitch(
      switches::kEnableExperimentalWebPlatformFeatures);

  InProcessBrowserTest::SetUpCommandLine(command_line);
}

void PlatformNotificationServiceBrowserTest::SetUp() {
  ui_manager_.reset(new StubNotificationUIManager);
  https_server_.reset(new net::SpawnedTestServer(
      net::SpawnedTestServer::TYPE_HTTPS,
      net::BaseTestServer::SSLOptions(
          net::BaseTestServer::SSLOptions::CERT_OK),
      base::FilePath(FILE_PATH_LITERAL("chrome/test/data/"))));
  ASSERT_TRUE(https_server_->Start());

  service()->SetNotificationUIManagerForTesting(ui_manager_.get());

  InProcessBrowserTest::SetUp();
}

void PlatformNotificationServiceBrowserTest::SetUpOnMainThread() {
  NavigateToTestPage(kTestPageUrl);

  InProcessBrowserTest::SetUpOnMainThread();
}

void PlatformNotificationServiceBrowserTest::TearDown() {
  service()->SetNotificationUIManagerForTesting(nullptr);
}

void PlatformNotificationServiceBrowserTest::NavigateToTestPage(
    const std::string& path) const {
  ui_test_utils::NavigateToURL(browser(), https_server_->GetURL(path));
}

bool PlatformNotificationServiceBrowserTest::RunScript(
    const std::string& script, std::string* result) const {
  return content::ExecuteScriptAndExtractString(
      browser()->tab_strip_model()->GetActiveWebContents()->GetMainFrame(),
      script,
      result);
}

// -----------------------------------------------------------------------------

// TODO(peter): Move PlatformNotificationService-related tests over from
// notification_browsertest.cc to this file.

IN_PROC_BROWSER_TEST_F(PlatformNotificationServiceBrowserTest,
                       DisplayPersistentNotificationWithoutPermission) {
  std::string script_result;

  InfoBarResponder accepting_responder(browser(), false);
  ASSERT_TRUE(RunScript("RequestPermission()", &script_result));
  EXPECT_EQ("denied", script_result);

  ASSERT_TRUE(RunScript("DisplayPersistentNotification()", &script_result));
  EXPECT_EQ(
      "TypeError: No notification permission has been granted for this origin.",
      script_result);

  ASSERT_EQ(0u, ui_manager()->GetNotificationCount());
}

IN_PROC_BROWSER_TEST_F(PlatformNotificationServiceBrowserTest,
                       DisplayPersistentNotificationWithPermission) {
  std::string script_result;

  InfoBarResponder accepting_responder(browser(), true);
  ASSERT_TRUE(RunScript("RequestPermission()", &script_result));
  EXPECT_EQ("granted", script_result);

  ASSERT_TRUE(RunScript("DisplayPersistentNotification('action_none')",
       &script_result));
  EXPECT_EQ("ok", script_result);

  ASSERT_EQ(1u, ui_manager()->GetNotificationCount());

  const Notification& notification = ui_manager()->GetNotificationAt(0);
  notification.delegate()->Click();

  ASSERT_TRUE(RunScript("GetMessageFromWorker()", &script_result));
  EXPECT_EQ("action_none", script_result);

  ASSERT_EQ(1u, ui_manager()->GetNotificationCount());
}

IN_PROC_BROWSER_TEST_F(PlatformNotificationServiceBrowserTest,
                       CloseDisplayedPersistentNotification) {
  std::string script_result;

  InfoBarResponder accepting_responder(browser(), true);
  ASSERT_TRUE(RunScript("RequestPermission()", &script_result));
  EXPECT_EQ("granted", script_result);

  ASSERT_TRUE(RunScript("DisplayPersistentNotification('action_close')",
      &script_result));
  EXPECT_EQ("ok", script_result);

  ASSERT_EQ(1u, ui_manager()->GetNotificationCount());

  const Notification& notification = ui_manager()->GetNotificationAt(0);
  notification.delegate()->Click();

  ASSERT_TRUE(RunScript("GetMessageFromWorker()", &script_result));
  EXPECT_EQ("action_close", script_result);

  ASSERT_EQ(0u, ui_manager()->GetNotificationCount());
}