/* WordChainBot
Copyright (C) 2017  Astro

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>. */

const Rule = require('./Rule');

class RuleManager {
  constructor(rules = []) {
    this.rules = rules;
  }

  add(rule) {
    if (rule instanceof Rule) {
      this.rules.push(rule);
    }
  }

  get(rule) {
    return this.rules.filter(value => value instanceof rule);
  }

  getAll() {
    return this.rules;
  }

  has(rule) {
    return this.rules.some(value => value instanceof rule);
  }

  remove(rule) {
    const { rules } = this;
    const idx = rules.map(value => value.constructor).indexOf(rule.constructor);
    if (idx >= 0) {
      rules.splice(idx, 1);
    }
  }

  set(rules) {
    this.rules = rules;
  }
}

module.exports = RuleManager;