// Copyright (c) 2012 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 "base/file_util.h"
#include "base/files/scoped_temp_dir.h"
#include "base/memory/ref_counted.h"
#include "base/path_service.h"
#include "remoting/host/json_host_config.h"
#include "testing/gtest/include/gtest/gtest.h"

namespace remoting {

namespace {
const char* kTestConfig =
"{\n"
"  \"xmpp_login\" : \"test@gmail.com\",\n"
"  \"xmpp_auth_token\" : \"TEST_AUTH_TOKEN\",\n"
"  \"host_id\" : \"TEST_HOST_ID\",\n"
"  \"host_name\" : \"TEST_MACHINE_NAME\",\n"
"  \"private_key\" : \"TEST_PRIVATE_KEY\"\n"
"}\n";
}  // namespace

class JsonHostConfigTest : public testing::Test {
 protected:
  static void WriteTestFile(const base::FilePath& filename) {
    base::WriteFile(filename, kTestConfig, std::strlen(kTestConfig));
  }

  // The temporary directory used to contain the test operations.
  base::ScopedTempDir test_dir_;
};

TEST_F(JsonHostConfigTest, InvalidFile) {
  ASSERT_TRUE(test_dir_.CreateUniqueTempDir());
  base::FilePath non_existent_file =
      test_dir_.path().AppendASCII("non_existent.json");
  JsonHostConfig target(non_existent_file);
  EXPECT_FALSE(target.Read());
}

TEST_F(JsonHostConfigTest, Read) {
  ASSERT_TRUE(test_dir_.CreateUniqueTempDir());
  base::FilePath test_file = test_dir_.path().AppendASCII("read.json");
  WriteTestFile(test_file);
  JsonHostConfig target(test_file);
  ASSERT_TRUE(target.Read());

  std::string value;
  EXPECT_TRUE(target.GetString(kXmppLoginConfigPath, &value));
  EXPECT_EQ("test@gmail.com", value);
  EXPECT_TRUE(target.GetString(kXmppAuthTokenConfigPath, &value));
  EXPECT_EQ("TEST_AUTH_TOKEN", value);
  EXPECT_TRUE(target.GetString(kHostIdConfigPath, &value));
  EXPECT_EQ("TEST_HOST_ID", value);
  EXPECT_TRUE(target.GetString(kHostNameConfigPath, &value));
  EXPECT_EQ("TEST_MACHINE_NAME", value);
  EXPECT_TRUE(target.GetString(kPrivateKeyConfigPath, &value));
  EXPECT_EQ("TEST_PRIVATE_KEY", value);

  EXPECT_FALSE(target.GetString("non_existent_value", &value));
}

TEST_F(JsonHostConfigTest, Write) {
  ASSERT_TRUE(test_dir_.CreateUniqueTempDir());

  base::FilePath test_file = test_dir_.path().AppendASCII("write.json");
  WriteTestFile(test_file);
  JsonHostConfig target(test_file);
  ASSERT_TRUE(target.Read());

  std::string new_auth_token_value = "NEW_AUTH_TOKEN";
  target.SetString(kXmppAuthTokenConfigPath, new_auth_token_value);
  ASSERT_TRUE(target.Save());

  // Now read the file again and check that the value has been written.
  JsonHostConfig reader(test_file);
  ASSERT_TRUE(reader.Read());

  std::string value;
  EXPECT_TRUE(reader.GetString(kXmppLoginConfigPath, &value));
  EXPECT_EQ("test@gmail.com", value);
  EXPECT_TRUE(reader.GetString(kXmppAuthTokenConfigPath, &value));
  EXPECT_EQ(new_auth_token_value, value);
  EXPECT_TRUE(reader.GetString(kHostIdConfigPath, &value));
  EXPECT_EQ("TEST_HOST_ID", value);
  EXPECT_TRUE(reader.GetString(kHostNameConfigPath, &value));
  EXPECT_EQ("TEST_MACHINE_NAME", value);
  EXPECT_TRUE(reader.GetString(kPrivateKeyConfigPath, &value));
  EXPECT_EQ("TEST_PRIVATE_KEY", value);
}

}