// 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 <string.h>

#include "base/memory/scoped_ptr.h"
#include "base/memory/scoped_vector.h"
#include "base/strings/utf_string_conversions.h"
#include "chrome/test/base/chrome_render_view_test.h"
#include "components/autofill/content/renderer/password_generation_manager.h"
#include "components/autofill/core/common/autofill_messages.h"
#include "components/autofill/core/common/form_data.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/WebKit/public/platform/WebString.h"
#include "third_party/WebKit/public/web/WebDocument.h"
#include "third_party/WebKit/public/web/WebWidget.h"

using WebKit::WebDocument;
using WebKit::WebElement;
using WebKit::WebInputElement;
using WebKit::WebNode;
using WebKit::WebString;

namespace autofill {

class TestPasswordGenerationManager : public PasswordGenerationManager {
 public:
  explicit TestPasswordGenerationManager(content::RenderView* view)
      : PasswordGenerationManager(view) {}
  virtual ~TestPasswordGenerationManager() {}

  // Make this public
  virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE {
    return PasswordGenerationManager::OnMessageReceived(message);
  }

  const std::vector<IPC::Message*>& messages() {
    return messages_.get();
  }

  void ClearMessages() {
    messages_.clear();
  }

 protected:
  virtual bool ShouldAnalyzeDocument(const WebKit::WebDocument& document) const
      OVERRIDE {
    return true;
  }

  virtual bool Send(IPC::Message* message) OVERRIDE {
    messages_.push_back(message);
    return true;
  }

 private:
  ScopedVector<IPC::Message> messages_;

  DISALLOW_COPY_AND_ASSIGN(TestPasswordGenerationManager);
};

class PasswordGenerationManagerTest : public ChromeRenderViewTest {
 public:
  PasswordGenerationManagerTest() {}

  virtual void SetUp() {
    // We don't actually create a PasswordGenerationManager during
    // ChromeRenderViewTest::SetUp because it's behind a flag. Since we want
    // to use a test manager anyway, we just create our own.
    ChromeRenderViewTest::SetUp();
    generation_manager_.reset(new TestPasswordGenerationManager(view_));
  }

  virtual void TearDown() {
    LoadHTML("");
    generation_manager_.reset();
    ChromeRenderViewTest::TearDown();
  }

  void SimulateClickOnDecoration(WebKit::WebInputElement* input_element) {
    generation_manager_->ClearMessages();
    WebKit::WebElement decoration =
        input_element->decorationElementFor(generation_manager_.get());
    decoration.simulateClick();
  }

  bool DecorationIsVisible(WebKit::WebInputElement* input_element) {
    WebKit::WebElement decoration =
        input_element->decorationElementFor(generation_manager_.get());
    return decoration.hasNonEmptyBoundingBox();
  }

  void SetPasswordGenerationEnabledMessage(void) {
    AutofillMsg_PasswordGenerationEnabled msg(0, true);
    generation_manager_->OnMessageReceived(msg);
  }

  void SetNotBlacklistedMessage(const char* form_str) {
    autofill::PasswordForm form;
    form.origin =
        GURL(base::StringPrintf("data:text/html;charset=utf-8,%s", form_str));
    AutofillMsg_FormNotBlacklisted msg(0, form);
    generation_manager_->OnMessageReceived(msg);
  }

  void SetAccountCreationFormsDetectedMessage(const char* form_str) {
    autofill::FormData form;
    form.origin =
        GURL(base::StringPrintf("data:text/html;charset=utf-8,%s", form_str));
    std::vector<autofill::FormData> forms;
    forms.push_back(form);
    AutofillMsg_AccountCreationFormsDetected msg(0, forms);
    generation_manager_->OnMessageReceived(msg);
  }

  void ExpectPasswordGenerationIconShown(const char* element_id, bool shown) {
    WebDocument document = GetMainFrame()->document();
    WebElement element =
        document.getElementById(WebString::fromUTF8(element_id));
    ASSERT_FALSE(element.isNull());
    WebInputElement target_element = element.to<WebInputElement>();
    if (shown) {
      EXPECT_TRUE(DecorationIsVisible(&target_element));
      SimulateClickOnDecoration(&target_element);
      EXPECT_EQ(1u, generation_manager_->messages().size());
      EXPECT_EQ(AutofillHostMsg_ShowPasswordGenerationPopup::ID,
                generation_manager_->messages()[0]->type());
    } else {
      EXPECT_FALSE(DecorationIsVisible(&target_element));
    }
  }

 protected:
  scoped_ptr<TestPasswordGenerationManager> generation_manager_;

 private:
  DISALLOW_COPY_AND_ASSIGN(PasswordGenerationManagerTest);
};

const char kSigninFormHTML[] =
    "<FORM name = 'blah' action = 'http://www.random.com/'> "
    "  <INPUT type = 'text' id = 'username'/> "
    "  <INPUT type = 'password' id = 'password'/> "
    "  <INPUT type = 'submit' value = 'LOGIN' />"
    "</FORM>";

const char kAccountCreationFormHTML[] =
    "<FORM name = 'blah' action = 'http://www.random.com/'> "
    "  <INPUT type = 'text' id = 'username'/> "
    "  <INPUT type = 'password' id = 'first_password' "
    "         autocomplete = 'off' size = 5/>"
    "  <INPUT type = 'password' id = 'second_password' size = 5/> "
    "  <INPUT type = 'text' id = 'address'/> "
    "  <INPUT type = 'submit' value = 'LOGIN' />"
    "</FORM>";

const char kHiddenPasswordAccountCreationFormHTML[] =
    "<FORM name = 'blah' action = 'http://www.random.com/'> "
    "  <INPUT type = 'text' id = 'username'/> "
    "  <INPUT type = 'password' id = 'first_password'/> "
    "  <INPUT type = 'password' id = 'second_password' style='display:none'/> "
    "  <INPUT type = 'submit' value = 'LOGIN' />"
    "</FORM>";

const char kInvalidActionAccountCreationFormHTML[] =
    "<FORM name = 'blah' action = 'invalid'> "
    "  <INPUT type = 'text' id = 'username'/> "
    "  <INPUT type = 'password' id = 'first_password'/> "
    "  <INPUT type = 'password' id = 'second_password'/> "
    "  <INPUT type = 'submit' value = 'LOGIN' />"
    "</FORM>";

TEST_F(PasswordGenerationManagerTest, DetectionTest) {
  // Don't shown the icon for non account creation forms.
  LoadHTML(kSigninFormHTML);
  ExpectPasswordGenerationIconShown("password", false);

  // We don't show the decoration yet because the feature isn't enabled.
  LoadHTML(kAccountCreationFormHTML);
  ExpectPasswordGenerationIconShown("first_password", false);

  // Pretend like password generation was enabled.
  SetPasswordGenerationEnabledMessage();

  // Pretend like We have received message indicating site is not blacklisted,
  // and we have received message indicating the form is classified as
  // ACCOUNT_CREATION_FORM form Autofill server. We should show the icon.
  LoadHTML(kAccountCreationFormHTML);
  SetNotBlacklistedMessage(kAccountCreationFormHTML);
  SetAccountCreationFormsDetectedMessage(kAccountCreationFormHTML);
  ExpectPasswordGenerationIconShown("first_password", true);

  // This doesn't trigger because hidden password fields are ignored.
  LoadHTML(kHiddenPasswordAccountCreationFormHTML);
  SetNotBlacklistedMessage(kHiddenPasswordAccountCreationFormHTML);
  SetAccountCreationFormsDetectedMessage(
      kHiddenPasswordAccountCreationFormHTML);
  ExpectPasswordGenerationIconShown("first_password", false);

  // This doesn't trigger because the form action is invalid.
  LoadHTML(kInvalidActionAccountCreationFormHTML);
  SetNotBlacklistedMessage(kInvalidActionAccountCreationFormHTML);
  SetAccountCreationFormsDetectedMessage(kInvalidActionAccountCreationFormHTML);
  ExpectPasswordGenerationIconShown("first_password", false);
}

TEST_F(PasswordGenerationManagerTest, FillTest) {
  // Make sure that we are enabled before loading HTML.
  SetPasswordGenerationEnabledMessage();
  LoadHTML(kAccountCreationFormHTML);

  WebDocument document = GetMainFrame()->document();
  WebElement element =
      document.getElementById(WebString::fromUTF8("first_password"));
  ASSERT_FALSE(element.isNull());
  WebInputElement first_password_element = element.to<WebInputElement>();
  element = document.getElementById(WebString::fromUTF8("second_password"));
  ASSERT_FALSE(element.isNull());
  WebInputElement second_password_element = element.to<WebInputElement>();

  // Both password fields should be empty.
  EXPECT_TRUE(first_password_element.value().isNull());
  EXPECT_TRUE(second_password_element.value().isNull());

  string16 password = ASCIIToUTF16("random_password");
  AutofillMsg_GeneratedPasswordAccepted msg(0, password);
  generation_manager_->OnMessageReceived(msg);

  // Password fields are filled out and set as being autofilled.
  EXPECT_EQ(password, first_password_element.value());
  EXPECT_EQ(password, second_password_element.value());
  EXPECT_TRUE(first_password_element.isAutofilled());
  EXPECT_TRUE(second_password_element.isAutofilled());

  // Focus moved to the next input field.
  // TODO(zysxqn): Change this back to the address element once Bug 90224
  // https://bugs.webkit.org/show_bug.cgi?id=90224 has been fixed.
  element = document.getElementById(WebString::fromUTF8("first_password"));
  ASSERT_FALSE(element.isNull());
  EXPECT_EQ(element, document.focusedNode());
}

TEST_F(PasswordGenerationManagerTest, BlacklistedTest) {
  // Make sure password generation is enabled.
  SetPasswordGenerationEnabledMessage();

  // Did not receive not blacklisted message. Don't show password generation
  // icon.
  LoadHTML(kAccountCreationFormHTML);
  SetAccountCreationFormsDetectedMessage(kAccountCreationFormHTML);
  ExpectPasswordGenerationIconShown("first_password", false);

  // Receive one not blacklisted message for non account creation form. Don't
  // show password generation icon.
  LoadHTML(kAccountCreationFormHTML);
  SetNotBlacklistedMessage(kSigninFormHTML);
  SetAccountCreationFormsDetectedMessage(kAccountCreationFormHTML);
  ExpectPasswordGenerationIconShown("first_password", false);

  // Receive one not blackliste message for account creation form. Show password
  // generation icon.
  LoadHTML(kAccountCreationFormHTML);
  SetNotBlacklistedMessage(kAccountCreationFormHTML);
  SetAccountCreationFormsDetectedMessage(kAccountCreationFormHTML);
  ExpectPasswordGenerationIconShown("first_password", true);

  // Receive two not blacklisted messages, one is for account creation form and
  // the other is not. Show password generation icon.
  LoadHTML(kAccountCreationFormHTML);
  SetNotBlacklistedMessage(kAccountCreationFormHTML);
  SetNotBlacklistedMessage(kSigninFormHTML);
  SetAccountCreationFormsDetectedMessage(kAccountCreationFormHTML);
  ExpectPasswordGenerationIconShown("first_password", true);
}

TEST_F(PasswordGenerationManagerTest, AccountCreationFormsDetectedTest) {
  // Make sure password generation is enabled.
  SetPasswordGenerationEnabledMessage();

  // Did not receive account creation forms detected messege. Don't show
  // password generation icon.
  LoadHTML(kAccountCreationFormHTML);
  SetNotBlacklistedMessage(kAccountCreationFormHTML);
  ExpectPasswordGenerationIconShown("first_password", false);

  // Receive the account creation forms detected message. Show password
  // generation icon.
  LoadHTML(kAccountCreationFormHTML);
  SetNotBlacklistedMessage(kAccountCreationFormHTML);
  SetAccountCreationFormsDetectedMessage(kAccountCreationFormHTML);
  ExpectPasswordGenerationIconShown("first_password", true);
}

}  // namespace autofill