'use strict';

/**
 * This module contains all the build time generation logic needed to
 * use the import functionality both by the FTU and Comms Applications
 *
 * The Functions exported by this module are used by the build scripts
 * of Comms and FTU apps
 */

const utils = require('./utils');

// Generates the communications services configuration as JS file
// loaded by the application (parameters.js)
function generateServicesConfig(config) {
  var importServicesFile = utils.resolve(config.CONTACTS_IMPORT_SERVICES_PATH,
    config.GAIA_DIR);

  if (!importServicesFile.exists()) {
    throw new Error('file not found: ' + importServicesFile.path);
  }

  var importServices = utils.getJSON(importServicesFile);

  // Bug 883344 Only use default facebook app id if is mozilla partner build
  if (config.OFFICIAL === '1') {
    importServices.facebook.applicationId = '395559767228801';
    importServices.live.applicationId = '00000000440F8B08';
  }

  var resultFile = utils.resolve(utils.joinPath('shared', 'pages', 'import',
    'js', 'parameters.js'), config.GAIA_DIR);
  var jsPrefix =  'var oauthflow = this.oauthflow || {}; oauthflow.params = ';
  var content = jsPrefix + JSON.stringify(importServices) + ';';

  if (resultFile.exists()) {
    let prev = utils.getFileContent(resultFile);
    if (prev === content) {
      return;
    }
  }
  utils.writeContent(resultFile, content);
}

exports.execute = function(config) {
  generateServicesConfig(config);
};