/*
 *  Copyright 2008 The WebRTC Project Authors. All rights reserved.
 *
 *  Use of this source code is governed by a BSD-style license
 *  that can be found in the LICENSE file in the root of the source
 *  tree. An additional intellectual property rights grant can be found
 *  in the file PATENTS.  All contributing project authors may
 *  be found in the AUTHORS file in the root of the source tree.
 */

#include <memory>

#include "webrtc/rtc_base/checks.h"
#include "webrtc/rtc_base/fileutils.h"
#include "webrtc/rtc_base/gunit.h"
#include "webrtc/rtc_base/optionsfile.h"
#include "webrtc/rtc_base/pathutils.h"

namespace rtc {

static const std::string kTestOptionA = "test-option-a";
static const std::string kTestOptionB = "test-option-b";
static const std::string kTestString1 = "a string";
static const std::string kTestString2 = "different string";
static const std::string kOptionWithEquals = "foo=bar";
static const std::string kOptionWithNewline = "foo\nbar";
static const std::string kValueWithEquals = "baz=quux";
static const std::string kValueWithNewline = "baz\nquux";
static const std::string kEmptyString = "";
static const char kOptionWithUtf8[] = {'O', 'p', 't', '\302', '\256', 'i', 'o',
    'n', '\342', '\204', '\242', '\0'};  // Opt(R)io(TM).
static const char kValueWithUtf8[] = {'V', 'a', 'l', '\302', '\256', 'v', 'e',
    '\342', '\204', '\242', '\0'};  // Val(R)ue(TM).
static int kTestInt1 = 12345;
static int kTestInt2 = 67890;
static int kNegInt = -634;
static int kZero = 0;

#if defined (WEBRTC_ANDROID)
// Fails on Android: https://bugs.chromium.org/p/webrtc/issues/detail?id=4364.
#define MAYBE_OptionsFileTest DISABLED_OptionsFileTest
#else
#define MAYBE_OptionsFileTest OptionsFileTest
#endif

class MAYBE_OptionsFileTest : public testing::Test {
 public:
  MAYBE_OptionsFileTest() {
    Pathname dir;
    RTC_CHECK(Filesystem::GetTemporaryFolder(dir, true, nullptr));
    test_file_ = Filesystem::TempFilename(dir, ".testfile");
    OpenStore();
  }

  ~MAYBE_OptionsFileTest() override {
    remove(test_file_.c_str());
  }

 protected:
  void OpenStore() {
    store_.reset(new OptionsFile(test_file_));
  }

  std::unique_ptr<OptionsFile> store_;

 private:
  std::string test_file_;
};

TEST_F(MAYBE_OptionsFileTest, GetSetString) {
  // Clear contents of the file on disk.
  EXPECT_TRUE(store_->Save());
  std::string out1, out2;
  EXPECT_FALSE(store_->GetStringValue(kTestOptionA, &out1));
  EXPECT_FALSE(store_->GetStringValue(kTestOptionB, &out2));
  EXPECT_TRUE(store_->SetStringValue(kTestOptionA, kTestString1));
  EXPECT_TRUE(store_->Save());
  EXPECT_TRUE(store_->Load());
  EXPECT_TRUE(store_->SetStringValue(kTestOptionB, kTestString2));
  EXPECT_TRUE(store_->Save());
  EXPECT_TRUE(store_->Load());
  EXPECT_TRUE(store_->GetStringValue(kTestOptionA, &out1));
  EXPECT_TRUE(store_->GetStringValue(kTestOptionB, &out2));
  EXPECT_EQ(kTestString1, out1);
  EXPECT_EQ(kTestString2, out2);
  EXPECT_TRUE(store_->RemoveValue(kTestOptionA));
  EXPECT_TRUE(store_->Save());
  EXPECT_TRUE(store_->Load());
  EXPECT_TRUE(store_->RemoveValue(kTestOptionB));
  EXPECT_TRUE(store_->Save());
  EXPECT_TRUE(store_->Load());
  EXPECT_FALSE(store_->GetStringValue(kTestOptionA, &out1));
  EXPECT_FALSE(store_->GetStringValue(kTestOptionB, &out2));
}

TEST_F(MAYBE_OptionsFileTest, GetSetInt) {
  // Clear contents of the file on disk.
  EXPECT_TRUE(store_->Save());
  int out1, out2;
  EXPECT_FALSE(store_->GetIntValue(kTestOptionA, &out1));
  EXPECT_FALSE(store_->GetIntValue(kTestOptionB, &out2));
  EXPECT_TRUE(store_->SetIntValue(kTestOptionA, kTestInt1));
  EXPECT_TRUE(store_->Save());
  EXPECT_TRUE(store_->Load());
  EXPECT_TRUE(store_->SetIntValue(kTestOptionB, kTestInt2));
  EXPECT_TRUE(store_->Save());
  EXPECT_TRUE(store_->Load());
  EXPECT_TRUE(store_->GetIntValue(kTestOptionA, &out1));
  EXPECT_TRUE(store_->GetIntValue(kTestOptionB, &out2));
  EXPECT_EQ(kTestInt1, out1);
  EXPECT_EQ(kTestInt2, out2);
  EXPECT_TRUE(store_->RemoveValue(kTestOptionA));
  EXPECT_TRUE(store_->Save());
  EXPECT_TRUE(store_->Load());
  EXPECT_TRUE(store_->RemoveValue(kTestOptionB));
  EXPECT_TRUE(store_->Save());
  EXPECT_TRUE(store_->Load());
  EXPECT_FALSE(store_->GetIntValue(kTestOptionA, &out1));
  EXPECT_FALSE(store_->GetIntValue(kTestOptionB, &out2));
  EXPECT_TRUE(store_->SetIntValue(kTestOptionA, kNegInt));
  EXPECT_TRUE(store_->GetIntValue(kTestOptionA, &out1));
  EXPECT_EQ(kNegInt, out1);
  EXPECT_TRUE(store_->SetIntValue(kTestOptionA, kZero));
  EXPECT_TRUE(store_->GetIntValue(kTestOptionA, &out1));
  EXPECT_EQ(kZero, out1);
}

TEST_F(MAYBE_OptionsFileTest, Persist) {
  // Clear contents of the file on disk.
  EXPECT_TRUE(store_->Save());
  EXPECT_TRUE(store_->SetStringValue(kTestOptionA, kTestString1));
  EXPECT_TRUE(store_->SetIntValue(kTestOptionB, kNegInt));
  EXPECT_TRUE(store_->Save());

  // Load the saved contents from above.
  OpenStore();
  EXPECT_TRUE(store_->Load());
  std::string out1;
  int out2;
  EXPECT_TRUE(store_->GetStringValue(kTestOptionA, &out1));
  EXPECT_TRUE(store_->GetIntValue(kTestOptionB, &out2));
  EXPECT_EQ(kTestString1, out1);
  EXPECT_EQ(kNegInt, out2);
}

TEST_F(MAYBE_OptionsFileTest, SpecialCharacters) {
  // Clear contents of the file on disk.
  EXPECT_TRUE(store_->Save());
  std::string out;
  EXPECT_FALSE(store_->SetStringValue(kOptionWithEquals, kTestString1));
  EXPECT_FALSE(store_->GetStringValue(kOptionWithEquals, &out));
  EXPECT_FALSE(store_->SetStringValue(kOptionWithNewline, kTestString1));
  EXPECT_FALSE(store_->GetStringValue(kOptionWithNewline, &out));
  EXPECT_TRUE(store_->SetStringValue(kOptionWithUtf8, kValueWithUtf8));
  EXPECT_TRUE(store_->SetStringValue(kTestOptionA, kTestString1));
  EXPECT_TRUE(store_->Save());
  EXPECT_TRUE(store_->Load());
  EXPECT_TRUE(store_->GetStringValue(kTestOptionA, &out));
  EXPECT_EQ(kTestString1, out);
  EXPECT_TRUE(store_->GetStringValue(kOptionWithUtf8, &out));
  EXPECT_EQ(kValueWithUtf8, out);
  EXPECT_FALSE(store_->SetStringValue(kTestOptionA, kValueWithNewline));
  EXPECT_TRUE(store_->GetStringValue(kTestOptionA, &out));
  EXPECT_EQ(kTestString1, out);
  EXPECT_TRUE(store_->SetStringValue(kTestOptionA, kValueWithEquals));
  EXPECT_TRUE(store_->Save());
  EXPECT_TRUE(store_->Load());
  EXPECT_TRUE(store_->GetStringValue(kTestOptionA, &out));
  EXPECT_EQ(kValueWithEquals, out);
  EXPECT_TRUE(store_->SetStringValue(kEmptyString, kTestString2));
  EXPECT_TRUE(store_->Save());
  EXPECT_TRUE(store_->Load());
  EXPECT_TRUE(store_->GetStringValue(kEmptyString, &out));
  EXPECT_EQ(kTestString2, out);
  EXPECT_TRUE(store_->SetStringValue(kTestOptionB, kEmptyString));
  EXPECT_TRUE(store_->Save());
  EXPECT_TRUE(store_->Load());
  EXPECT_TRUE(store_->GetStringValue(kTestOptionB, &out));
  EXPECT_EQ(kEmptyString, out);
}

}  // namespace rtc