const moment = require("moment");
const knex = require("../knex");
const Snippet = require("./Snippet");

/**
 * @param {String} trigger
 * @returns {Promise<Snippet>}
 */
async function getSnippet(trigger) {
  const snippet = await knex("snippets")
    .where("trigger", trigger)
    .first();

  return (snippet ? new Snippet(snippet) : null);
}

/**
 * @param {String} trigger
 * @param {String} body
 * @returns {Promise<void>}
 */
async function addSnippet(trigger, body, createdBy = 0) {
  if (await getSnippet(trigger)) return;

  return knex("snippets").insert({
    trigger,
    body,
    created_by: createdBy,
    created_at: moment.utc().format("YYYY-MM-DD HH:mm:ss")
  });
}

/**
 * @param {String} trigger
 * @returns {Promise<void>}
 */
async function deleteSnippet(trigger) {
  return knex("snippets")
    .where("trigger", trigger)
    .delete();
}

/**
 * @returns {Promise<Snippet[]>}
 */
async function getAllSnippets() {
  const snippets = await knex("snippets")
    .select();

  return snippets.map(s => new Snippet(s));
}

module.exports = {
  get: getSnippet,
  add: addSnippet,
  del: deleteSnippet,
  all: getAllSnippets,
};