// Copyright 2018 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/ui/web_applications/test/web_app_navigation_browsertest.h"

#include <vector>

#include "base/functional/bind.h"
#include "base/functional/callback.h"
#include "base/run_loop.h"
#include "base/strings/escape.h"
#include "base/strings/utf_string_conversions.h"
#include "base/test/bind.h"
#include "build/build_config.h"
#include "chrome/browser/apps/app_service/app_registry_cache_waiter.h"
#include "chrome/browser/profiles/profile_io_data.h"
#include "chrome/browser/ui/browser.h"
#include "chrome/browser/ui/browser_finder.h"
#include "chrome/browser/ui/tabs/tab_strip_model.h"
#include "chrome/browser/ui/web_applications/test/web_app_browsertest_util.h"
#include "chrome/browser/web_applications/mojom/user_display_mode.mojom.h"
#include "chrome/browser/web_applications/test/web_app_install_test_utils.h"
#include "chrome/browser/web_applications/web_app.h"
#include "chrome/browser/web_applications/web_app_command_scheduler.h"
#include "chrome/browser/web_applications/web_app_install_finalizer.h"
#include "chrome/browser/web_applications/web_app_install_info.h"
#include "chrome/browser/web_applications/web_app_provider.h"
#include "chrome/browser/web_applications/web_app_registrar.h"
#include "chrome/test/base/ui_test_utils.h"
#include "components/services/app_service/public/cpp/app_types.h"
#include "components/webapps/browser/installable/installable_metrics.h"
#include "components/webapps/browser/uninstall_result_code.h"
#include "content/public/browser/render_frame_host.h"
#include "content/public/browser/web_contents.h"
#include "content/public/common/content_switches.h"
#include "content/public/test/browser_test_utils.h"
#include "content/public/test/test_navigation_observer.h"
#include "net/dns/mock_host_resolver.h"
#include "net/test/embedded_test_server/http_request.h"
#include "net/test/embedded_test_server/http_response.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/blink/public/common/features.h"
#include "third_party/blink/public/common/switches.h"

namespace {

const char kLaunchingPageHost[] = "launching-page.com";
const char kLaunchingPagePath[] = "/index.html";

const char kAppUrlHost[] = "app.com";
const char kOtherAppUrlHost[] = "other-app.com";
const char kAppScopePath[] = "/in_scope/";
const char kAppUrlPath[] = "/in_scope/index.html";
const char kInScopeUrlPath[] = "/in_scope/other.html";
const char kOutOfScopeUrlPath[] = "/out_of_scope/index.html";

const char kAppName[] = "Test app";

}  // anonymous namespace

namespace web_app {

// static
const char* WebAppNavigationBrowserTest::GetLaunchingPageHost() {
  return kLaunchingPageHost;
}

// static
const char* WebAppNavigationBrowserTest::GetLaunchingPagePath() {
  return kLaunchingPagePath;
}

// static
const char* WebAppNavigationBrowserTest::GetAppUrlHost() {
  return kAppUrlHost;
}

// static
const char* WebAppNavigationBrowserTest::GetOtherAppUrlHost() {
  return kOtherAppUrlHost;
}

// static
const char* WebAppNavigationBrowserTest::GetAppScopePath() {
  return kAppScopePath;
}

// static
const char* WebAppNavigationBrowserTest::GetAppUrlPath() {
  return kAppUrlPath;
}

// static
const char* WebAppNavigationBrowserTest::GetInScopeUrlPath() {
  return kInScopeUrlPath;
}

// static
const char* WebAppNavigationBrowserTest::GetOutOfScopeUrlPath() {
  return kOutOfScopeUrlPath;
}

// static
const char* WebAppNavigationBrowserTest::GetAppName() {
  return kAppName;
}

// static
std::string WebAppNavigationBrowserTest::CreateServerRedirect(
    const GURL& target_url) {
  const char* const kServerRedirectBase = "/server-redirect?";
  return kServerRedirectBase +
         base::EscapeQueryParamValue(target_url.spec(), false);
}

// static
std::unique_ptr<content::TestNavigationObserver>
WebAppNavigationBrowserTest::GetTestNavigationObserver(const GURL& target_url) {
  auto observer = std::make_unique<content::TestNavigationObserver>(target_url);
  observer->WatchExistingWebContents();
  observer->StartWatchingNewWebContents();
  return observer;
}

// static
void WebAppNavigationBrowserTest::ClickLink(
    content::WebContents* web_contents,
    const GURL& link_url,
    WebAppNavigationBrowserTest::LinkTarget target,
    const std::string& rel,
    int modifiers,
    blink::WebMouseEvent::Button button) {
  std::string script = content::JsReplace(
      R"(
(() => {
  document.body.innerHTML = '';
  const link = document.createElement('a');
  link.href = $1;
  link.target = $2;
  link.rel = $3;
  // Make a click target that covers the whole viewport.
  const click_target = document.createElement('textarea');
  click_target.style.position = 'absolute';
  click_target.style.top = 0;
  click_target.style.left = 0;
  click_target.style.height = '100vh';
  click_target.style.width = '100vw';
  link.appendChild(click_target);
  document.body.appendChild(link);
})();)",
      link_url.spec().c_str(), target == LinkTarget::SELF ? "_self" : "_blank",
      rel.c_str());
  ASSERT_TRUE(content::ExecJs(web_contents, script));

  content::SimulateEndOfPaintHoldingOnPrimaryMainFrame(web_contents);
  content::SimulateMouseClick(web_contents, modifiers, button);
}

// static
void WebAppNavigationBrowserTest::ClickLinkWithModifiersAndWaitForURL(
    content::WebContents* web_contents,
    const GURL& link_url,
    const GURL& target_url,
    WebAppNavigationBrowserTest::LinkTarget target,
    const std::string& rel,
    int modifiers,
    blink::WebMouseEvent::Button button) {
  auto observer = GetTestNavigationObserver(target_url);
  ClickLink(web_contents, link_url, target, rel, modifiers, button);
  observer->Wait();
}

// static
void WebAppNavigationBrowserTest::ClickLinkAndWaitForURL(
    content::WebContents* web_contents,
    const GURL& link_url,
    const GURL& target_url,
    WebAppNavigationBrowserTest::LinkTarget target,
    const std::string& rel) {
  ClickLinkWithModifiersAndWaitForURL(
      web_contents, link_url, target_url, target, rel,
      blink::WebInputEvent::Modifiers::kNoModifiers);
}

// static
void WebAppNavigationBrowserTest::ClickLinkAndWait(
    content::WebContents* web_contents,
    const GURL& link_url,
    WebAppNavigationBrowserTest::LinkTarget target,
    const std::string& rel) {
  ClickLinkAndWaitForURL(web_contents, link_url, link_url, target, rel);
}

WebAppNavigationBrowserTest::WebAppNavigationBrowserTest()
    : https_server_(net::EmbeddedTestServer::TYPE_HTTPS) {}

WebAppNavigationBrowserTest::~WebAppNavigationBrowserTest() = default;

void WebAppNavigationBrowserTest::SetUp() {
  https_server_.AddDefaultHandlers(GetChromeTestDataDir());
  // Register a request handler that will return empty pages. Tests are
  // responsible for adding elements and firing events on these empty pages.
  https_server_.RegisterRequestHandler(base::BindRepeating(
      [](const net::test_server::HttpRequest& request)
          -> std::unique_ptr<net::test_server::HttpResponse> {
        // Let the default request handlers handle redirections.
        if (request.GetURL().path() == "/server-redirect" ||
            request.GetURL().path() == "/client-redirect") {
          return {};
        }
        auto response = std::make_unique<net::test_server::BasicHttpResponse>();
        response->set_content_type("text/html");
        response->AddCustomHeader("Access-Control-Allow-Origin", "*");
        response->AddCustomHeader("Supports-Loading-Mode", "fenced-frame");
        return response;
      }));

  WebAppBrowserTestBase::SetUp();
}

void WebAppNavigationBrowserTest::SetUpInProcessBrowserTestFixture() {
  WebAppBrowserTestBase::SetUpInProcessBrowserTestFixture();
  cert_verifier_.SetUpInProcessBrowserTestFixture();
}

void WebAppNavigationBrowserTest::TearDownInProcessBrowserTestFixture() {
  WebAppBrowserTestBase::TearDownInProcessBrowserTestFixture();
  cert_verifier_.TearDownInProcessBrowserTestFixture();
}

void WebAppNavigationBrowserTest::SetUpCommandLine(
    base::CommandLine* command_line) {
  // Allow pre-commit input because the content used in the test does not paint
  // anything and relies on script execution to create links, and we do not want
  // to wait for the commit timeout.
  command_line->AppendSwitch(blink::switches::kAllowPreCommitInput);
  cert_verifier_.SetUpCommandLine(command_line);
}

void WebAppNavigationBrowserTest::SetUpOnMainThread() {
  WebAppBrowserTestBase::SetUpOnMainThread();
  host_resolver()->AddRule("*", "127.0.0.1");
  // By default, all SSL cert checks are valid. Can be overridden in tests.
  cert_verifier_.mock_cert_verifier()->set_default_result(net::OK);
  profile_ = browser()->profile();
}

void WebAppNavigationBrowserTest::TearDownOnMainThread() {
#if BUILDFLAG(IS_CHROMEOS)
  auto* const provider = WebAppProvider::GetForWebApps(profile());
  const WebAppRegistrar& registrar = provider->registrar_unsafe();
  std::vector<webapps::AppId> app_ids = registrar.GetAppIds();
  for (const auto& app_id : app_ids) {
    if (!registrar.IsInRegistrar(app_id)) {
      continue;
    }
    const WebApp* app = registrar.GetAppById(app_id);
    DCHECK(app->CanUserUninstallWebApp());
    apps::AppReadinessWaiter app_readiness_waiter(
        profile(), app_id, apps::Readiness::kUninstalledByUser);
    base::RunLoop run_loop;
    provider->scheduler().RemoveUserUninstallableManagements(
        app_id, webapps::WebappUninstallSource::kAppsPage,
        base::BindLambdaForTesting([&](webapps::UninstallResultCode code) {
          EXPECT_EQ(code, webapps::UninstallResultCode::kAppRemoved);
          run_loop.Quit();
        }));
    run_loop.Run();
    app_readiness_waiter.Await();
  }
#endif

  WebAppBrowserTestBase::TearDownOnMainThread();
}

Profile* WebAppNavigationBrowserTest::profile() {
  return profile_;
}

void WebAppNavigationBrowserTest::InstallTestWebApp() {
  test_web_app_ = InstallTestWebApp(GetAppUrlHost(), GetAppScopePath());
}

webapps::AppId WebAppNavigationBrowserTest::InstallTestWebApp(
    const std::string& app_host,
    const std::string& app_scope) {
  if (!https_server_.Started()) {
    CHECK(https_server_.Start());
  }

  GURL start_url = https_server_.GetURL(app_host, GetAppUrlPath());
  auto web_app_info =
      WebAppInstallInfo::CreateWithStartUrlForTesting(start_url);
  web_app_info->scope = https_server_.GetURL(app_host, app_scope);
  web_app_info->title = base::UTF8ToUTF16(GetAppName());
  web_app_info->description = u"Test description";
  web_app_info->user_display_mode =
      web_app::mojom::UserDisplayMode::kStandalone;

  webapps::AppId app_id =
      test::InstallWebApp(profile(), std::move(web_app_info));
  DCHECK(!app_id.empty());
  apps::AppReadinessWaiter(profile(), app_id).Await();
  return app_id;
}

Browser* WebAppNavigationBrowserTest::OpenTestWebApp() {
  GURL app_url = https_server_.GetURL(GetAppUrlHost(), GetAppUrlPath());
  auto observer = GetTestNavigationObserver(app_url);
  Browser* app_browser = LaunchWebAppBrowser(test_web_app_);
  observer->Wait();

  return app_browser;
}

void WebAppNavigationBrowserTest::NavigateToLaunchingPage(Browser* browser) {
  ASSERT_TRUE(ui_test_utils::NavigateToURL(
      browser,
      https_server_.GetURL(GetLaunchingPageHost(), GetLaunchingPagePath())));
}

bool WebAppNavigationBrowserTest::ExpectLinkClickNotCapturedIntoAppBrowser(
    Browser* browser,
    const GURL& target_url,
    const std::string& rel) {
  content::WebContents* initial_tab =
      browser->tab_strip_model()->GetActiveWebContents();
  int num_tabs = browser->tab_strip_model()->count();
  size_t num_browsers = chrome::GetBrowserCount(browser->profile());

  ClickLinkAndWait(browser->tab_strip_model()->GetActiveWebContents(),
                   target_url, LinkTarget::SELF, rel);

  EXPECT_EQ(num_tabs, browser->tab_strip_model()->count());
  EXPECT_EQ(num_browsers, chrome::GetBrowserCount(browser->profile()));
  EXPECT_EQ(browser, chrome::FindLastActive());
  EXPECT_EQ(initial_tab, browser->tab_strip_model()->GetActiveWebContents());
  EXPECT_EQ(target_url, initial_tab->GetLastCommittedURL());

  return !HasFailure();
}

const GURL& WebAppNavigationBrowserTest::test_web_app_start_url() {
  auto* const provider = WebAppProvider::GetForWebApps(profile());
  const WebAppRegistrar& registrar = provider->registrar_unsafe();
  return registrar.GetAppStartUrl(test_web_app_);
}

}  // namespace web_app