'use strict';

const SError            = require('./Error'),
  SerializerFileSystem  = require('./SerializerFileSystem'),
  fs                    = require('fs'),
  path                  = require('path'),
  _                     = require('lodash'),
  BbPromise             = require('bluebird');

let SUtils;

class Templates extends SerializerFileSystem {

  constructor(S, data, filePath) {
    super(S);

    SUtils = S.utils;

    this._S        = S;
    this._class    = 'Templates';
    this._filePath = filePath;
    this._parents  = [];

    if (data) this.fromObject(data);
  }

  load() {
    return this.deserialize(this);
  }

  save() {
    return this.serialize(this);
  }

  /**
   * Set Parents
   * - Parent templates which this template extends
   * - Must be an array of parents sorted left to right from prj root
   */

  setParents(parents) {
    this._parents = parents;
  }

  /**
   * To Object
   * - Aggregates templates w/ any parents and exports clone
   */

  toObject() {
    let clone = SUtils.exportObject(_.cloneDeep(this));
    let parents = _.map(this._parents, (p) => {
      return p.toObject && p.toObject() || {}
    });
    let parentsClone = _.cloneDeep(parents);
    parentsClone.push(clone);
    return _.merge.apply(_, parentsClone);
  }

  fromObject(data) {
    return _.assign(this, data);
  }

  getFilePath() {
    return this._filePath;
  }

  getRootPath() {
    let args = _.toArray( arguments );
    args.unshift(path.dirname(this.getFilePath()));
    return path.join.apply( path, args );
  }
}

module.exports = Templates;