#!/usr/bin/env node

/**
 * Module dependencies.
 */

const util = require('./util');
const program = require('commander');
const mongoose = require('../services/mongoose');
const databaseVerifications = require('./verifications/database');

// Register the shutdown criteria.
util.onshutdown([() => mongoose.disconnect()]);

async function database({ fix = false, limit = Infinity, batch = 1000 }) {
  try {
    for (const verification of databaseVerifications) {
      await verification({ fix, limit, batch });
    }
  } catch (err) {
    console.error(
      `Failed to process all the ${databaseVerifications.length} verifications`,
      err
    );
    util.shutdown(1);
    return;
  }

  util.shutdown();
}

//==============================================================================
// Setting up the program command line arguments.
//==============================================================================

program
  .command('db')
  .description('verifies the database integrity')
  .option('-f, --fix', 'fix the problems found with database inconsistencies')
  .option(
    '-l, --limit [size]',
    'limit the amount of documents to process in a single pass, this will ensure only a maximum number of batch operations are issued [default: inf]',
    parseInt
  )
  .option(
    '-b, --batch [size]',
    'batch size to process verifications and repairs of documents [default: 1000]',
    parseInt
  )
  .action(database);

program.parse(process.argv);

// If there is no command listed, output help.
if (!process.argv.slice(2).length) {
  program.outputHelp();
  util.shutdown();
}