// Copyright 2010, Google Inc.
// All rights reserved.
//
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// modification, are permitted provided that the following conditions are
// met:
//
//     * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
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// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

#include <string>

#include "base/update_util.h"
#include "base/version.h"
#include "testing/base/public/gunit.h"
#ifdef OS_WINDOWS
#include "shared/opensource/patching/sidestep/cross/auto_testing_hook.h"
#endif

#ifdef OS_WINDOWS

// Users of the sidestep library need to supply these functions.
// See sidestep/cross/integration.h
// for more details.
// TODO(mazda): Make a library for these implementations.
namespace sidestep {
void AssertImpl(bool assertion_is_true, const char* message) {
  DCHECK(assertion_is_true) << message;
}

void LogImpl(const char* message) {
  DLOG(INFO) << message;
}
}  // sidestep

namespace {
HKEY g_created_key;
wstring g_created_key_path;
wstring g_written_value_name;
wstring g_written_value;
DWORD g_written_type;
wstring g_queried_value_name;
wstring g_query_value_returned;
HKEY g_opened_key;
wstring g_opened_key_path;

LSTATUS WINAPI TestRegCreateKeyExW(
    HKEY hkey, LPCWSTR sub_key, DWORD reserved, LPWSTR class_name,
    DWORD options, REGSAM sam, LPSECURITY_ATTRIBUTES security_attributes,
    PHKEY result, LPDWORD disposition) {
  g_created_key = hkey;
  g_created_key_path = sub_key;
  return ERROR_SUCCESS;
}

LSTATUS WINAPI TestRegSetValueEx(
    HKEY key, LPCTSTR value_name, DWORD reserved, DWORD type,
    const BYTE *data, DWORD num_data) {
  g_written_value_name = value_name;
  g_written_value = wstring(reinterpret_cast<const wchar_t*>(data));
  g_written_type = type;
  return ERROR_SUCCESS;
}

LSTATUS WINAPI TestRegCloseKey(HKEY key) {
  return ERROR_SUCCESS;
}

LSTATUS WINAPI TestRegOpenKeyEx(
    HKEY key, LPCWSTR sub_key, DWORD options, REGSAM sam, PHKEY result) {
  g_opened_key = key;
  g_opened_key_path = sub_key;
  return ERROR_SUCCESS;
}

LSTATUS WINAPI TestRegQueryValueEx(
    HKEY key, LPCTSTR value_name, LPDWORD reserved, LPDWORD type, LPBYTE data,
    LPDWORD num_data) {
  g_queried_value_name = value_name;
  copy(g_query_value_returned.begin(), g_query_value_returned.end(),
       reinterpret_cast<wchar_t*>(data));
  *num_data = g_query_value_returned.size() * sizeof(wchar_t);
  *type = REG_SZ;
  return ERROR_SUCCESS;
}

class UpdateUtilTestWin : public testing::Test {
 protected:
  static void SetUpTestCase() {
     static sidestep::AutoTestingHook g_hook_reg_create =
        sidestep::MakeTestingHook(RegCreateKeyExW, TestRegCreateKeyExW);
     static sidestep::AutoTestingHook g_hook_reg_set =
        sidestep::MakeTestingHook(RegSetValueEx, TestRegSetValueEx);
     static sidestep::AutoTestingHook g_hook_reg_close =
        sidestep::MakeTestingHook(RegCloseKey, TestRegCloseKey);
     static sidestep::AutoTestingHook g_hook_reg_open =
        sidestep::MakeTestingHook(RegOpenKeyEx, TestRegOpenKeyEx);
     static sidestep::AutoTestingHook g_hook_reg_query =
        sidestep::MakeTestingHook(RegQueryValueEx, TestRegQueryValueEx);
  }

  virtual void SetUp() {
    g_created_key = NULL;
    g_created_key_path.clear();
    g_written_value_name.clear();
    g_written_value.clear();
    g_written_type = 0;
    g_queried_value_name.clear();
    g_opened_key = NULL;
    g_opened_key_path.clear();
    g_query_value_returned = L"1.2.3.4";
  }
  virtual void TearDown() {
  }
};

}  // namespace

namespace mozc {

TEST_F(UpdateUtilTestWin, WriteActiveUsageInfo) {
  EXPECT_TRUE(UpdateUtil::WriteActiveUsageInfo());
  EXPECT_EQ(HKEY_CURRENT_USER, g_created_key);
  EXPECT_EQ(L"Software\\Google\\Update\\ClientState"
            L"\\{DDCCD2A9-025E-4142-BCEB-F467B88CF830}", g_created_key_path);
  EXPECT_EQ(L"dr", g_written_value_name);
  EXPECT_EQ(L"1", g_written_value);
}

TEST_F(UpdateUtilTestWin, GetAvailableVersion) {
  string available_version =  UpdateUtil::GetAvailableVersion();
  EXPECT_EQ(HKEY_LOCAL_MACHINE, g_opened_key);
  EXPECT_EQ(L"Software\\Google\\Update\\Clients"
            L"\\{DDCCD2A9-025E-4142-BCEB-F467B88CF830}", g_opened_key_path);
  EXPECT_EQ(L"pv", g_queried_value_name);
  EXPECT_EQ("1.2.3.4", available_version);
}

TEST_F(UpdateUtilTestWin, IsNewVersionAvailable) {
  g_query_value_returned = L"0.0.0.1";
  EXPECT_FALSE(UpdateUtil::IsNewVersionAvailable());
  g_query_value_returned = L"1000.0.0.0";
  EXPECT_TRUE(UpdateUtil::IsNewVersionAvailable());
}
}  // namespace mozc
#endif  // OS_WINDOWS


namespace mozc {
TEST(UpdateUtilTest, GetCurrentVersion) {
  EXPECT_EQ(UpdateUtil::GetCurrentVersion(), Version::GetMozcVersion());
}
}  // namespace mozc