const intersection = require('lodash/intersection');
const check = (user, roles) => {
  return !!intersection(roles, user.roles).length;
};

const CREATE_COMMENT = 'CREATE_COMMENT';
const CREATE_ACTION = 'CREATE_ACTION';
const DELETE_ACTION = 'DELETE_ACTION';
const EDIT_NAME = 'EDIT_NAME';
const SET_USER_STATUS = 'SET_USER_STATUS';
const SUSPEND_USER = 'SUSPEND_USER';
const SET_COMMENT_STATUS = 'SET_COMMENT_STATUS';
const ADD_COMMENT_TAG = 'ADD_COMMENT_TAG';
const REMOVE_COMMENT_TAG = 'REMOVE_COMMENT_TAG';
const UPDATE_CONFIG = 'UPDATE_CONFIG';

module.exports = {
  constants: [
    CREATE_COMMENT, CREATE_ACTION, DELETE_ACTION, EDIT_NAME, SET_USER_STATUS,
    SUSPEND_USER, SET_COMMENT_STATUS, ADD_COMMENT_TAG, REMOVE_COMMENT_TAG, UPDATE_CONFIG
  ],
  reducer: (user, perm, context, initialState) => {
    switch (perm) {
    case 'muation:createComment':
      return true;
    case 'mutation:createAction':
      return true;
    case 'mutation:deleteAction':
      return true;
    case 'mutation:editName':
      return true;
    case 'mutation:setUserStatus':
      return check(user, ['ADMIN', 'MODERATOR']);
    case 'mutation:suspendUser':
      return check(user, ['ADMIN', 'MODERATOR']);
    case 'mutation:setCommentStatus':
      return check(user, ['ADMIN', 'MODERATOR']);
    case 'mutation:addCommentTag':
      return check(user, ['ADMIN', 'MODERATOR']);
    case 'mutation:removeCommentTag':
      return check(user, ['ADMIN', 'MODERATOR']);
    case 'mutation:updateConfig':
      return check(user, ['ADMIN', 'MODERATOR']);
    default:
      return initialState;
    }
  }
};