// 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 "net/ftp/ftp_directory_listing_parser.h"

#include "base/files/file_util.h"
#include "base/format_macros.h"
#include "base/path_service.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/string_split.h"
#include "base/strings/string_util.h"
#include "base/strings/stringprintf.h"
#include "base/strings/utf_string_conversions.h"
#include "net/base/net_errors.h"
#include "net/ftp/ftp_directory_listing_parser.h"
#include "testing/gtest/include/gtest/gtest.h"

namespace net {

namespace {

struct FtpTestParam {
  const char* name;
  Error expected_result;
};

std::string TestName(testing::TestParamInfo<FtpTestParam> info) {
  std::string result;
  base::ReplaceChars(info.param.name, "-", "_", &result);
  return result;
}

class FtpDirectoryListingParserTest
    : public testing::TestWithParam<FtpTestParam> {};

TEST_P(FtpDirectoryListingParserTest, Parse) {
  FtpTestParam param = GetParam();
  base::FilePath test_dir;
  base::PathService::Get(base::DIR_SOURCE_ROOT, &test_dir);
  test_dir = test_dir.AppendASCII("net");
  test_dir = test_dir.AppendASCII("data");
  test_dir = test_dir.AppendASCII("ftp");

  base::Time::Exploded mock_current_time_exploded = { 0 };
  mock_current_time_exploded.year = 1994;
  mock_current_time_exploded.month = 11;
  mock_current_time_exploded.day_of_month = 15;
  mock_current_time_exploded.hour = 12;
  mock_current_time_exploded.minute = 45;
  base::Time mock_current_time;
  EXPECT_TRUE(base::Time::FromUTCExploded(mock_current_time_exploded,
                                          &mock_current_time));

  SCOPED_TRACE(base::StringPrintf("Test case: %s", param.name));

  std::string test_listing;
  EXPECT_TRUE(
      base::ReadFileToString(test_dir.AppendASCII(param.name), &test_listing));

  std::vector<FtpDirectoryListingEntry> entries;
  EXPECT_EQ(
      param.expected_result,
      ParseFtpDirectoryListing(test_listing, mock_current_time, &entries));
  if (param.expected_result != OK)
    return;

  std::string expected_listing;
  ASSERT_TRUE(base::ReadFileToString(
      test_dir.AppendASCII(std::string(param.name) + ".expected"),
      &expected_listing));

  std::vector<std::string> lines = base::SplitStringUsingSubstr(
      expected_listing, "\r\n", base::TRIM_WHITESPACE, base::SPLIT_WANT_ALL);

  // Special case for empty listings.
  if (lines.size() == 1 && lines[0].empty())
    lines.clear();

  ASSERT_EQ(9 * entries.size(), lines.size());

  for (size_t i = 0; i < lines.size() / 9; i++) {
    std::string type(lines[9 * i]);
    std::string name(lines[9 * i + 1]);
    int64_t size;
    base::StringToInt64(lines[9 * i + 2], &size);

    SCOPED_TRACE(base::StringPrintf("Filename: %s", name.c_str()));

    int year, month, day_of_month, hour, minute;
    base::StringToInt(lines[9 * i + 3], &year);
    base::StringToInt(lines[9 * i + 4], &month);
    base::StringToInt(lines[9 * i + 5], &day_of_month);
    base::StringToInt(lines[9 * i + 6], &hour);
    base::StringToInt(lines[9 * i + 7], &minute);

    const FtpDirectoryListingEntry& entry = entries[i];

    if (type == "d") {
      EXPECT_EQ(FtpDirectoryListingEntry::DIRECTORY, entry.type);
    } else if (type == "-") {
      EXPECT_EQ(FtpDirectoryListingEntry::FILE, entry.type);
    } else if (type == "l") {
      EXPECT_EQ(FtpDirectoryListingEntry::SYMLINK, entry.type);
    } else {
      ADD_FAILURE() << "invalid gold test data: " << type;
    }

    EXPECT_EQ(base::UTF8ToUTF16(name), entry.name);
    EXPECT_EQ(size, entry.size);

    base::Time::Exploded time_exploded;
    entry.last_modified.UTCExplode(&time_exploded);
    EXPECT_EQ(year, time_exploded.year);
    EXPECT_EQ(month, time_exploded.month);
    EXPECT_EQ(day_of_month, time_exploded.day_of_month);
    EXPECT_EQ(hour, time_exploded.hour);
    EXPECT_EQ(minute, time_exploded.minute);
  }
}

const FtpTestParam kTestParams[] = {
    {"dir-listing-ls-1", OK},
    {"dir-listing-ls-1-utf8", OK},
    {"dir-listing-ls-2", OK},
    {"dir-listing-ls-3", OK},
    {"dir-listing-ls-4", OK},
    {"dir-listing-ls-5", OK},
    {"dir-listing-ls-6", OK},
    {"dir-listing-ls-7", OK},
    {"dir-listing-ls-8", OK},
    {"dir-listing-ls-9", OK},
    {"dir-listing-ls-10", OK},
    {"dir-listing-ls-11", OK},
    {"dir-listing-ls-12", OK},
    {"dir-listing-ls-13", OK},
    {"dir-listing-ls-14", OK},
    {"dir-listing-ls-15", OK},
    {"dir-listing-ls-16", OK},
    {"dir-listing-ls-17", OK},
    {"dir-listing-ls-18", OK},
    {"dir-listing-ls-19", OK},
    {"dir-listing-ls-20", OK},
    {"dir-listing-ls-21", OK},
    {"dir-listing-ls-22", OK},
    {"dir-listing-ls-23", OK},
    {"dir-listing-ls-24", OK},

    // Tests for Russian listings. The only difference between those
    // files is character encoding:
    {"dir-listing-ls-25", OK},  // UTF-8
    {"dir-listing-ls-26", OK},  // KOI8-R
    {"dir-listing-ls-27", OK},  // windows-1251

    {"dir-listing-ls-28", OK},  // Hylafax FTP server
    {"dir-listing-ls-29", OK},
    {"dir-listing-ls-30", OK},
    {"dir-listing-ls-31", OK},
    {"dir-listing-ls-32", OK},  // busybox
    {"dir-listing-ls-33", OK},
    {"dir-listing-ls-34", OK},  // Broken encoding. Should not fail.

    {"dir-listing-netware-1", OK},
    {"dir-listing-netware-2", OK},
    {"dir-listing-netware-3", OK},
    {"dir-listing-os2-1", ERR_UNRECOGNIZED_FTP_DIRECTORY_LISTING_FORMAT},
    {"dir-listing-vms-1", OK},
    {"dir-listing-vms-2", OK},
    {"dir-listing-vms-3", OK},
    {"dir-listing-vms-4", OK},
    {"dir-listing-vms-5", OK},
    {"dir-listing-vms-6", OK},
    {"dir-listing-vms-7", OK},
    {"dir-listing-vms-8", OK},
    {"dir-listing-windows-1", OK},
    {"dir-listing-windows-2", OK},
};

INSTANTIATE_TEST_CASE_P(,
                        FtpDirectoryListingParserTest,
                        testing::ValuesIn(kTestParams),
                        TestName);

}  // namespace

}  // namespace net