'use strict';

module.exports = exports = reveal;

exports.usage = 'Reveals data on the versioned binary';

const versioning = require('./util/versioning.js');
const napi = require('./util/napi.js');

function unix_paths(key, val) {
  return val && val.replace ? val.replace(/\\/g, '/') : val;
}

function reveal(gyp, argv, callback) {
  const package_json = gyp.package_json;
  const napi_build_version = napi.get_napi_build_version_from_command_args(argv);
  const opts = versioning.evaluate(package_json, gyp.opts, napi_build_version);
  let hit = false;
  // if a second arg is passed look to see
  // if it is a known option
  // console.log(JSON.stringify(gyp.opts,null,1))
  const remain = gyp.opts.argv.remain[gyp.opts.argv.remain.length - 1];
  if (remain && Object.hasOwnProperty.call(opts, remain)) {
    console.log(opts[remain].replace(/\\/g, '/'));
    hit = true;
  }
  // otherwise return all options as json
  if (!hit) {
    console.log(JSON.stringify(opts, unix_paths, 2));
  }
  return callback();
}