// 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 "chrome/browser/extensions/extension_action_test_util.h"

#include "base/memory/scoped_ptr.h"
#include "base/run_loop.h"
#include "chrome/browser/extensions/extension_action.h"
#include "chrome/browser/extensions/extension_action_manager.h"
#include "chrome/browser/extensions/extension_toolbar_model.h"
#include "chrome/browser/extensions/extension_toolbar_model_factory.h"
#include "chrome/browser/extensions/location_bar_controller.h"
#include "chrome/browser/extensions/tab_helper.h"
#include "chrome/browser/extensions/test_extension_system.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/sessions/session_tab_helper.h"
#include "components/crx_file/id_util.h"
#include "content/public/browser/web_contents.h"
#include "extensions/common/extension.h"
#include "extensions/common/extension_builder.h"
#include "extensions/common/feature_switch.h"
#include "extensions/common/manifest_constants.h"
#include "extensions/common/value_builder.h"

namespace extensions {
namespace extension_action_test_util {

namespace {

size_t GetPageActionCount(content::WebContents* web_contents,
                          bool only_count_visible) {
  DCHECK(web_contents);
  size_t count = 0u;
  int tab_id = SessionTabHelper::IdForTab(web_contents);
  // Page actions are either stored in the location bar (and provided by the
  // LocationBarController), or in the main toolbar (and provided by the
  // ExtensionToolbarModel), depending on whether or not the extension action
  // redesign is enabled.
  if (!FeatureSwitch::extension_action_redesign()->IsEnabled()) {
    std::vector<ExtensionAction*> page_actions =
        TabHelper::FromWebContents(web_contents)->
            location_bar_controller()->GetCurrentActions();
    count = page_actions.size();
    // Trim any invisible page actions, if necessary.
    if (only_count_visible) {
      for (std::vector<ExtensionAction*>::iterator iter = page_actions.begin();
           iter != page_actions.end(); ++iter) {
        if (!(*iter)->GetIsVisible(tab_id))
          --count;
      }
    }
  } else {
    ExtensionToolbarModel* toolbar_model =
        ExtensionToolbarModel::Get(
            Profile::FromBrowserContext(web_contents->GetBrowserContext()));
    const ExtensionList& toolbar_extensions = toolbar_model->toolbar_items();
    ExtensionActionManager* action_manager =
        ExtensionActionManager::Get(web_contents->GetBrowserContext());
    for (ExtensionList::const_iterator iter = toolbar_extensions.begin();
         iter != toolbar_extensions.end(); ++iter) {
      ExtensionAction* extension_action = action_manager->GetPageAction(**iter);
      if (extension_action &&
          (!only_count_visible || extension_action->GetIsVisible(tab_id)))
        ++count;
    }
  }

  return count;
}

// Creates a new ExtensionToolbarModel for the given |context|.
scoped_ptr<KeyedService> BuildToolbarModel(content::BrowserContext* context) {
  return make_scoped_ptr(new extensions::ExtensionToolbarModel(
      Profile::FromBrowserContext(context),
      extensions::ExtensionPrefs::Get(context)));
}

// Creates a new ExtensionToolbarModel for the given profile, optionally
// triggering the extension system's ready signal.
ExtensionToolbarModel* CreateToolbarModelImpl(Profile* profile,
                                              bool wait_for_ready) {
  ExtensionToolbarModel* model = ExtensionToolbarModel::Get(profile);
  if (model)
    return model;

  // No existing model means it's a new profile (since we, by default, don't
  // create the ToolbarModel in testing).
  ExtensionToolbarModelFactory::GetInstance()->SetTestingFactory(
      profile, &BuildToolbarModel);
  model = ExtensionToolbarModel::Get(profile);
  if (wait_for_ready) {
    // Fake the extension system ready signal.
    // HACK ALERT! In production, the ready task on ExtensionSystem (and most
    // everything else on it, too) is shared between incognito and normal
    // profiles, but a TestExtensionSystem doesn't have the concept of "shared".
    // Because of this, we have to set any new profile's TestExtensionSystem's
    // ready task, too.
    static_cast<TestExtensionSystem*>(ExtensionSystem::Get(profile))->
        SetReady();
    // Run tasks posted to TestExtensionSystem.
    base::RunLoop().RunUntilIdle();
  }

  return model;
}

}  // namespace

size_t GetVisiblePageActionCount(content::WebContents* web_contents) {
  return GetPageActionCount(web_contents, true);
}

size_t GetTotalPageActionCount(content::WebContents* web_contents) {
  return GetPageActionCount(web_contents, false);
}

scoped_refptr<const Extension> CreateActionExtension(const std::string& name,
                                                     ActionType action_type) {
  return CreateActionExtension(name, action_type, Manifest::INTERNAL);
}

scoped_refptr<const Extension> CreateActionExtension(
    const std::string& name,
    ActionType action_type,
    Manifest::Location location) {
  DictionaryBuilder manifest;
  manifest.Set("name", name)
          .Set("description", "An extension")
          .Set("manifest_version", 2)
          .Set("version", "1.0.0");

  const char* action_key = nullptr;
  switch (action_type) {
    case NO_ACTION:
      break;
    case PAGE_ACTION:
      action_key = manifest_keys::kPageAction;
      break;
    case BROWSER_ACTION:
      action_key = manifest_keys::kBrowserAction;
      break;
  }

  if (action_key)
    manifest.Set(action_key, DictionaryBuilder().Pass());

  return ExtensionBuilder().SetManifest(manifest.Pass()).
                            SetID(crx_file::id_util::GenerateId(name)).
                            SetLocation(location).
                            Build();
}

ExtensionToolbarModel* CreateToolbarModelForProfile(Profile* profile) {
  return CreateToolbarModelImpl(profile, true);
}

ExtensionToolbarModel* CreateToolbarModelForProfileWithoutWaitingForReady(
    Profile* profile) {
  return CreateToolbarModelImpl(profile, false);
}

}  // namespace extension_action_test_util
}  // namespace extensions