📦 apache / fory

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124/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

#include <cstdlib>
#include <fstream>
#include <iostream>
#include <map>
#include <string>
#include <vector>

#include "addressbook.h"
#include "fory/serialization/fory.h"

namespace {

fory::Result<std::vector<uint8_t>, fory::Error>
ReadFile(const std::string &path) {
  std::ifstream input(path, std::ios::binary);
  if (FORY_PREDICT_FALSE(!input)) {
    return fory::Unexpected(
        fory::Error::invalid("failed to open data file for reading"));
  }
  std::vector<uint8_t> data((std::istreambuf_iterator<char>(input)),
                            std::istreambuf_iterator<char>());
  return data;
}

fory::Result<void, fory::Error> WriteFile(const std::string &path,
                                          const std::vector<uint8_t> &data) {
  std::ofstream output(path, std::ios::binary | std::ios::trunc);
  if (FORY_PREDICT_FALSE(!output)) {
    return fory::Unexpected(
        fory::Error::invalid("failed to open data file for writing"));
  }
  output.write(reinterpret_cast<const char *>(data.data()),
               static_cast<std::streamsize>(data.size()));
  if (FORY_PREDICT_FALSE(!output)) {
    return fory::Unexpected(fory::Error::invalid("failed to write data file"));
  }
  return fory::Result<void, fory::Error>();
}

fory::Result<void, fory::Error> RunRoundTrip() {
  auto fory = fory::serialization::Fory::builder()
                  .xlang(true)
                  .check_struct_version(true)
                  .track_ref(false)
                  .build();

  addressbook::RegisterTypes(fory);

  addressbook::Person::PhoneNumber mobile;
  mobile.number = "555-0100";
  mobile.phone_type = addressbook::Person::PhoneType::MOBILE;

  addressbook::Person::PhoneNumber work;
  work.number = "555-0111";
  work.phone_type = addressbook::Person::PhoneType::WORK;

  addressbook::Person person;
  person.name = "Alice";
  person.id = 123;
  person.email = "alice@example.com";
  person.tags = {"friend", "colleague"};
  person.scores = {{"math", 100}, {"science", 98}};
  person.salary = 120000.5;
  person.phones = {mobile, work};

  addressbook::AddressBook book;
  book.people = {person};
  book.people_by_name = {{person.name, person}};

  FORY_TRY(bytes, fory.serialize(book));
  FORY_TRY(roundtrip, fory.deserialize<addressbook::AddressBook>(bytes.data(),
                                                                 bytes.size()));

  if (!(roundtrip == book)) {
    return fory::Unexpected(
        fory::Error::invalid("addressbook roundtrip mismatch"));
  }

  const char *data_file = std::getenv("DATA_FILE");
  if (data_file != nullptr && data_file[0] != '\0') {
    FORY_TRY(payload, ReadFile(data_file));
    FORY_TRY(peer_book, fory.deserialize<addressbook::AddressBook>(
                            payload.data(), payload.size()));
    if (!(peer_book == book)) {
      return fory::Unexpected(fory::Error::invalid("peer payload mismatch"));
    }
    FORY_TRY(peer_bytes, fory.serialize(peer_book));
    FORY_RETURN_IF_ERROR(WriteFile(data_file, peer_bytes));
  }

  return fory::Result<void, fory::Error>();
}

} // namespace

int main() {
  auto result = RunRoundTrip();
  if (!result.ok()) {
    std::cerr << "IDL roundtrip failed: " << result.error().message()
              << std::endl;
    return 1;
  }
  return 0;
}