const low = require('lowdb');
const FileSync = require('lowdb/adapters/FileSync');

const paths = require('../data/paths.json'); // get our paths
const settings = require('../data/settings.json'); // get the settings
const defaults = settings.defaults || {}; // load the defaults

// connect the db from the path
const connect = (dir, opts) => {
  let options = opts || Object.assign({}, defaults, paths[dir]); // baseline the options
  let adapter = new FileSync(options.database); // init the db adapter
  let db = low(adapter); // connect the db
  return db;
};

// find a file in the db
const find = (db, file) => {
  return db
    .get('files')
    .find({
      input: file,
    })
    .value(); // does it already exist?
};

// set a file in the db
const set = async (db, file, payload) => {
  if (!payload && typeof file === 'object') {
    db.get('files').push(file).write();
    return file;
  }
  return db
    .get('files')
    .find({
      input: file,
    })
    .assign(payload)
    .write();
};

// remove a file from the db
const remove = async (db, file) => {
  return db
    .get('files')
    .remove({
      input: file,
    })
    .write(); // remove file from database
};

module.exports = {
  connect,
  find,
  remove,
  set
};