// 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 "extensions/common/permissions/api_permission.h"

#include <map>
#include <set>
#include <string>

#include "base/containers/contains.h"
#include "base/files/file_path.h"
#include "base/files/file_util.h"
#include "base/path_service.h"
#include "base/strings/stringprintf.h"
#include "base/test/metrics/histogram_enum_reader.h"
#include "extensions/common/alias.h"
#include "extensions/common/permissions/permissions_info.h"
#include "testing/gtest/include/gtest/gtest.h"

namespace extensions {

// Tests that the ExtensionPermission3 enum in enums.xml exactly matches the
// mojom::APIPermissionID enum in Mojom.
TEST(ExtensionAPIPermissionTest, CheckEnums) {
  std::optional<base::HistogramEnumEntryMap> enums = base::ReadEnumFromEnumsXml(
      "ExtensionPermission3", /*subdirectory=*/"extensions");
  ASSERT_TRUE(enums);
  // The number of enums in the histogram entry should be equal to the number of
  // enums in the C++ file.
  EXPECT_EQ(enums->size(),
            static_cast<size_t>(mojom::APIPermissionID::kMaxValue) + 1);

  base::FilePath src_root;
  ASSERT_TRUE(base::PathService::Get(base::DIR_SRC_TEST_DATA_ROOT, &src_root));
  base::FilePath permission_histogram_value =
      src_root.AppendASCII("extensions")
          .AppendASCII("common")
          .AppendASCII("mojom")
          .AppendASCII("api_permission_id.mojom");
  ASSERT_TRUE(base::PathExists(permission_histogram_value));

  std::string file_contents;
  ASSERT_TRUE(
      base::ReadFileToString(permission_histogram_value, &file_contents));

  for (const auto& entry : *enums) {
    // Check that the Mojo file has a definition equal to the histogram file.
    // For now, we do this in a simple, but reasonably effective, manner:
    // expecting to find the string "ENTRY = <value>" somewhere in the file.
    std::string expected_string =
        base::StringPrintf("%s = %d", entry.second.c_str(), entry.first);
    EXPECT_TRUE(base::Contains(file_contents, expected_string))
        << "Failed to find entry " << entry.second << " with value "
        << entry.first;
  }
}

TEST(ExtensionAPIPermissionTest, ManagedSessionLoginWarningFlag) {
  PermissionsInfo* info = PermissionsInfo::GetInstance();

  constexpr APIPermissionInfo::InitInfo init_info[] = {
      {mojom::APIPermissionID::kUnknown, "test permission",
       APIPermissionInfo::kFlagImpliesFullURLAccess |
           APIPermissionInfo::
               kFlagDoesNotRequireManagedSessionFullLoginWarning}};

  info->RegisterPermissions(base::span(init_info),
                            base::span<const extensions::Alias>());

  EXPECT_FALSE(info->GetByID(mojom::APIPermissionID::kUnknown)
                   ->requires_managed_session_full_login_warning());
}

}  // namespace extensions