make-sync-function

#!/usr/bin/env node

const commander = require('./lib/commander/index');
const syncFunctionLoader = require('./src/loading/sync-function-loader');
const syncFunctionWriter = require('./src/saving/sync-function-writer');

const errorStatus = 1;

const { version } = require('./package');

// Parse the commandline arguments
commander.arguments('<document_definitions_file> <output_file>')
  .version(version, '-v, --version')
  .description('A utility for generating sync functions for Couchbase Sync Gateway.')
  .option('-j, --json-string', 'enclose the sync function contents in a JSON-compatible string');

commander.on('--help', () => {
  // Add some extra information after the main body of the auto-generated usage/help text
  console.info(`
  For example: ${commander.name()} /path/to/my-doc-definitions.js /path/to/my-new-sync-function.js

  See the README for more information.`);
});

commander.parse(process.argv);

if (commander.args.length !== 2) {
  commander.outputHelp();

  process.exit(errorStatus);
}

const docDefnFilename = commander.args[0];
const outputFilename = commander.args[1];

let syncFuncString;
try {
  syncFuncString = syncFunctionLoader.load(docDefnFilename);
} catch (ex) {
  process.exit(errorStatus);
}

try {
  const formatOptions = { jsonString: commander.jsonString };
  syncFunctionWriter.save(outputFilename, syncFuncString, formatOptions);
} catch (ex) {
  console.error(`ERROR: Unable to write the sync function to the output file: ${ex}`);

  process.exit(errorStatus);
}

console.info(`Sync function written to ${outputFilename}`);