"use strict";

const _require = require("./Chains"),
      ChainedMap = _require.ChainedMap;

module.exports = class extends ChainedMap {
  constructor(parent) {
    super(parent);
    this.extend(['init']); // chain back up

    this.plugin = name => this.parent.plugin(name);

    this.init((Plugin, args = []) => {
      if (!Array.isArray(args)) args = [args];
      return new Plugin(...args);
    });
  }
  /**
   * @TODO: RESOLVE REL PATHS IN ARGS
   */


  use(plugin, args = []) {
    return this.set('plugin', plugin).set('args', args);
  }

  tap(f) {
    this.set('args', f(this.get('args') || []));
    return this;
  }

  merge(obj) {
    if (obj.plugin) {
      this.set('plugin', obj.plugin);
    }

    if (obj.args) {
      this.set('args', obj.args);
    }

    return this;
  }

  toConfig() {
    const init = this.get('init');
    return init(this.get('plugin'), this.get('args'));
  }

};