/*
 * Copyright 2017 Facebook, Inc.
 *
 * Licensed 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 <folly/experimental/NestedCommandLineApp.h>
#include <folly/portability/GFlags.h>

DEFINE_int32(global_foo, 42, "Global foo");

namespace po = ::boost::program_options;

namespace {

void init(const std::string& cmd,
          const po::variables_map& /* options */,
          const std::vector<std::string>& /* args */) {
  printf("running %s\n", cmd.c_str());
}

void foo(const po::variables_map& options,
         const std::vector<std::string>& args) {
  printf("foo global-foo %d\n", options["global-foo"].as<int32_t>());
  printf("foo local-foo %d\n", options["local-foo"].as<int32_t>());
  for (auto& arg : args) {
    printf("foo arg %s\n", arg.c_str());
  }
}

}  // namespace

int main(int argc, char *argv[]) {
  folly::NestedCommandLineApp app("", "0.1", init);
  app.addGFlags();
  app.addCommand("foo", "[args...]", "Do some foo", "Does foo", foo)
    .add_options()
      ("local-foo", po::value<int32_t>()->default_value(42), "Local foo");
  app.addAlias("bar", "foo");
  app.addAlias("baz", "bar");
  return app.run(argc, argv);
}
