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

#include "chrome/browser/resource_coordinator/tab_manager.h"

#include <algorithm>
#include <map>
#include <memory>
#include <string>
#include <utility>
#include <vector>

#include "base/check.h"
#include "base/functional/bind.h"
#include "base/memory/ptr_util.h"
#include "base/memory/raw_ptr.h"
#include "base/metrics/field_trial.h"
#include "base/notreached.h"
#include "base/test/mock_entropy_provider.h"
#include "base/test/scoped_feature_list.h"
#include "base/time/time.h"
#include "build/build_config.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/metrics/desktop_session_duration/desktop_session_duration_tracker.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/resource_coordinator/tab_helper.h"
#include "chrome/browser/resource_coordinator/tab_lifecycle_unit.h"
#include "chrome/browser/resource_coordinator/tab_lifecycle_unit_external.h"
#include "chrome/browser/resource_coordinator/tab_manager_resource_coordinator_signal_observer.h"
#include "chrome/browser/resource_coordinator/time.h"
#include "chrome/browser/resource_coordinator/utils.h"
#include "chrome/browser/ui/tab_ui_helper.h"
#include "chrome/browser/ui/tabs/tab_strip_model.h"
#include "chrome/browser/ui/tabs/test_tab_strip_model_delegate.h"
#include "chrome/common/url_constants.h"
#include "chrome/test/base/chrome_render_view_host_test_harness.h"
#include "chrome/test/base/testing_profile.h"
#include "components/variations/variations_associated_data.h"
#include "content/public/browser/render_frame_host.h"
#include "content/public/browser/render_process_host.h"
#include "content/public/browser/web_contents.h"
#include "content/public/test/mock_navigation_handle.h"
#include "content/public/test/mock_render_process_host.h"
#include "content/public/test/web_contents_tester.h"
#include "net/base/network_change_notifier.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "url/gurl.h"

using content::MockNavigationHandle;
using content::NavigationThrottle;
using content::WebContents;
using content::WebContentsTester;

namespace resource_coordinator {

class TabManagerTest : public ChromeRenderViewHostTestHarness {
 public:
  TabManagerTest()
      : ChromeRenderViewHostTestHarness(
            base::test::TaskEnvironment::TimeSource::MOCK_TIME) {
    // Start with a non-zero time.
    task_environment()->FastForwardBy(base::Seconds(42));
  }

  std::unique_ptr<WebContents> CreateWebContents() {
    std::unique_ptr<WebContents> web_contents = CreateTestWebContents();
    ResourceCoordinatorTabHelper::CreateForWebContents(web_contents.get());
    // Commit an URL to allow discarding.
    content::WebContentsTester::For(web_contents.get())
        ->NavigateAndCommit(GURL("https://www.example.com"));

    return web_contents;
  }

  void SetUp() override {
    ChromeRenderViewHostTestHarness::SetUp();
    tab_manager_ = g_browser_process->GetTabManager();
  }

  bool IsTabDiscarded(content::WebContents* content) {
    return TabLifecycleUnitExternal::FromWebContents(content)->GetTabState() ==
           ::mojom::LifecycleUnitState::DISCARDED;
  }

 protected:
  raw_ptr<TabManager> tab_manager_ = nullptr;
};

// TODO(georgesak): Add tests for protection to tabs with form input and
// playing audio;

TEST_F(TabManagerTest, IsInternalPage) {
  EXPECT_TRUE(TabManager::IsInternalPage(GURL(chrome::kChromeUIDownloadsURL)));
  EXPECT_TRUE(TabManager::IsInternalPage(GURL(chrome::kChromeUIHistoryURL)));
  EXPECT_TRUE(TabManager::IsInternalPage(chrome::ChromeUINewTabURLAsGURL()));
  EXPECT_TRUE(TabManager::IsInternalPage(GURL(chrome::kChromeUISettingsURL)));

// Debugging URLs are not included.
#if BUILDFLAG(IS_CHROMEOS)
  EXPECT_FALSE(TabManager::IsInternalPage(GURL(chrome::kChromeUIDiscardsURL)));
#endif
  EXPECT_FALSE(
      TabManager::IsInternalPage(GURL(chrome::kChromeUINetInternalsURL)));

  // Prefix matches are included.
  GURL::Replacements replace_fake_path;
  replace_fake_path.SetPathStr("fakeSetting");
  EXPECT_TRUE(TabManager::IsInternalPage(
      GURL(chrome::kChromeUISettingsURL).ReplaceComponents(replace_fake_path)));
}

}  // namespace resource_coordinator