// Copyright 2018 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 <memory>
#include <string>
#include <utility>
#include <vector>

#include "base/optional.h"
#include "base/values.h"
#include "base/version.h"
#include "components/prefs/testing_pref_service.h"
#include "components/update_client/activity_data_service.h"
#include "components/update_client/persisted_data.h"
#include "components/update_client/protocol_definition.h"
#include "components/update_client/protocol_serializer.h"
#include "components/update_client/protocol_serializer_json.h"
#include "components/update_client/updater_state.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/re2/src/re2/re2.h"

using base::Value;
using std::string;

namespace update_client {

TEST(SerializeRequestJSON, Serialize) {
  // When no updater state is provided, then check that the elements and
  // attributes related to the updater state are not serialized.

  std::vector<base::Value> events;
  events.push_back(Value(Value::Type::DICTIONARY));
  events.push_back(Value(Value::Type::DICTIONARY));
  events[0].SetKey("a", Value(1));
  events[0].SetKey("b", Value("2"));
  events[1].SetKey("error", Value(0));

  auto pref = std::make_unique<TestingPrefServiceSimple>();
  PersistedData::RegisterPrefs(pref->registry());
  auto metadata = std::make_unique<PersistedData>(pref.get(), nullptr);
  std::vector<std::string> items = {"id1"};
  metadata->SetDateLastRollCall(items, 1234);

  std::vector<protocol_request::App> apps;
  apps.push_back(MakeProtocolApp(
      "id1", base::Version("1.0"), "brand1", "source1", "location1", "fp1",
      {{"attr1", "1"}, {"attr2", "2"}}, "c1", "ch1", "cn1", {0, 1},
      MakeProtocolUpdateCheck(true), MakeProtocolPing("id1", metadata.get())));
  apps.push_back(
      MakeProtocolApp("id2", base::Version("2.0"), std::move(events)));

  const auto request = std::make_unique<ProtocolSerializerJSON>()->Serialize(
      MakeProtocolRequest("{15160585-8ADE-4D3C-839B-1281A6035D1F}", "prod_id",
                          "1.0", "lang", "channel", "OS", "cacheable",
                          {{"extra", "params"}}, nullptr, std::move(apps)));
  constexpr char regex[] =
      R"({"request":{"@os":"\w+","@updater":"prod_id",)"
      R"("acceptformat":"crx2,crx3",)"
      R"("app":\[{"appid":"id1","attr1":"1","attr2":"2","brand":"brand1",)"
      R"("cohort":"c1","cohorthint":"ch1","cohortname":"cn1",)"
      R"("disabled":\[{"reason":0},{"reason":1}],"enabled":false,)"
      R"("installedby":"location1","installsource":"source1",)"
      R"("packages":{"package":\[{"fp":"fp1"}]},)"
      R"("ping":{"ping_freshness":"{[-\w]{36}}","rd":1234},)"
      R"("updatecheck":{"updatedisabled":true},"version":"1.0"},)"
      R"({"appid":"id2","event":\[{"a":1,"b":"2"},{"error":0}],)"
      R"("version":"2.0"}],"arch":"\w+","dedup":"cr","dlpref":"cacheable",)"
      R"("extra":"params","hw":{"physmemory":\d+},"lang":"lang",)"
      R"("nacl_arch":"[-\w]+","os":{"arch":"[_,-.\w]+","platform":"OS",)"
      R"(("sp":"[\s\w]+",)?"version":"[-.\w]+"},"prodchannel":"channel",)"
      R"("prodversion":"1.0","protocol":"3.1","requestid":"{[-\w]{36}}",)"
      R"("sessionid":"{[-\w]{36}}","updaterchannel":"channel",)"
      R"("updaterversion":"1.0"(,"wow64":true)?}})";
  EXPECT_TRUE(RE2::FullMatch(request, regex)) << request;
}

TEST(SerializeRequestJSON, DownloadPreference) {
  // Verifies that an empty |download_preference| is not serialized.
  const auto serializer = std::make_unique<ProtocolSerializerJSON>();
  auto request = serializer->Serialize(
      MakeProtocolRequest("{15160585-8ADE-4D3C-839B-1281A6035D1F}", "", "", "",
                          "", "", "", {}, nullptr, {}));
  EXPECT_FALSE(RE2::PartialMatch(request, R"("dlpref":)")) << request;

  // Verifies that |download_preference| is serialized.
  request = serializer->Serialize(
      MakeProtocolRequest("{15160585-8ADE-4D3C-839B-1281A6035D1F}", "", "", "",
                          "", "", "cacheable", {}, nullptr, {}));
  EXPECT_TRUE(RE2::PartialMatch(request, R"("dlpref":"cacheable")")) << request;
}

// When present, updater state attributes are only serialized for Google builds,
// except the |domainjoined| attribute, which is serialized in all cases.
TEST(SerializeRequestJSON, UpdaterStateAttributes) {
  const auto serializer = std::make_unique<ProtocolSerializerJSON>();
  UpdaterState::Attributes attributes;
  attributes["ismachine"] = "1";
  attributes["domainjoined"] = "1";
  attributes["name"] = "Omaha";
  attributes["version"] = "1.2.3.4";
  attributes["laststarted"] = "1";
  attributes["lastchecked"] = "2";
  attributes["autoupdatecheckenabled"] = "0";
  attributes["updatepolicy"] = "-1";
  const auto request = serializer->Serialize(MakeProtocolRequest(
      "{15160585-8ADE-4D3C-839B-1281A6035D1F}", "prod_id", "1.0", "lang",
      "channel", "OS", "cacheable", {{"extra", "params"}}, &attributes, {}));
  constexpr char regex[] =
      R"({"request":{"@os":"\w+","@updater":"prod_id",)"
      R"("acceptformat":"crx2,crx3","arch":"\w+","dedup":"cr",)"
      R"("dlpref":"cacheable","domainjoined":true,"extra":"params",)"
      R"("hw":{"physmemory":\d+},"lang":"lang","nacl_arch":"[-\w]+",)"
      R"("os":{"arch":"[,-.\w]+","platform":"OS",("sp":"[\s\w]+",)?)"
      R"("version":"[-.\w]+"},"prodchannel":"channel","prodversion":"1.0",)"
      R"("protocol":"3.1","requestid":"{[-\w]{36}}","sessionid":"{[-\w]{36}}",)"
#if defined(GOOGLE_CHROME_BUILD)
      R"("updater":{"autoupdatecheckenabled":false,"ismachine":true,)"
      R"("lastchecked":2,"laststarted":1,"name":"Omaha","updatepolicy":-1,)"
      R"("version":"1\.2\.3\.4"},)"
#endif  // GOOGLE_CHROME_BUILD
      R"("updaterchannel":"channel","updaterversion":"1.0"(,"wow64":true)?}})";
  EXPECT_TRUE(RE2::FullMatch(request, regex)) << request;
}

}  // namespace update_client