// @author tykayn contact@cipherbliss.com www.cipherbliss.com
// imports
var fs = require("fs");
let Parser = require("rss-parser");
let parser = new Parser();
const { Client } = require("pg");
var colors = require("colors");
const { v4: uuidv4 } = require("uuid");

// configuration of the parser
const config = {
  rss_feed_url: "https://www.agendadulibre.org/events.rss?tag=openstreetmap",
  feeder_mobilizon_user_id: "3", // organizer_actor_id pour rattacher les nouveaux évènements à un utilisateur. 3 est le premier admin créé.
  mobilizon_public_url: "https://mobilizon.openstreetmap.fr", // url publique de l'instance mobilizon pour créer les url d'évènements
  db_name: "mobilizon_dev",
  db_user: "mobilizon",
  db_pass: "mobilizon",
};

console.log(" ===============================================".blue);
console.log(" ====  Rss Feeder for mobilizon - by tykayn ====".blue);
console.log(" ===============================================".blue);
console.log("configMobilizon".blue, config);

let localMobilizonEventsByTitle = [];

// trouver si un évènement existe déjà par son titre
// TODO à affiner au delà du titre
const doesThisEventAlreadyExistInLocalEvents = (rssEvent) => {
  const eventAlreadyExists =
    -1 !== localMobilizonEventsByTitle.indexOf(rssEvent.title);
  if (!eventAlreadyExists) {
    console.log("ajouter l event ", htmlEscape(rssEvent.title));
    // console.log("    ", escape(rssEvent.content ));
    addEventQuery(rssEvent);
  }
};

let createEventQueries = "";
let counterOfEventsToAdd = 0;
const { htmlEscape } = require("escape-goat");

const addEventQuery = (rssEvent) => {
  if (!createEventQueries) {
    createEventQueries =
      "INSERT INTO events(title, description, organizer_actor_id,inserted_at,updated_at, uuid, url, status, category, options,participants_stats) VALUES ";
  }
  if (counterOfEventsToAdd) {
    createEventQueries += ` , `;
  }

  let title = "'" + htmlEscape(rssEvent.title) + "'";
  let content = "'" + htmlEscape(rssEvent.content) + "'";
  let uuid = uuidv4();
  let uuidString = "'" + uuid + "'";
  let eventUrl = "'" + config.mobilizon_public_url + "/events/" + uuid + "'";
  let baseOptions =
    '{"offers": [], "program": null, "attendees": [], "show_end_time": true, "show_start_time": true, "comment_moderation": "allow_all", "anonymous_participation": true, "participation_condition": [], "show_participation_price": false, "maximum_attendee_capacity": 0, "remaining_attendee_capacity": 0, "hide_organizer_when_group_event": false, "show_remaining_attendee_capacity": false}';
  let baseStats =
    '{"creator": 1, "rejected": 0, "moderator": 0, "participant": 0, "not_approved": 0, "administrator": 0, "not_confirmed": 0}';
  // TODO complete with date conversion
  //  begins_on , ends_on expecting date format like this: "2020-12-17 23:00:00"

  createEventQueries += `( ${title}, ${content}, ${config.feeder_mobilizon_user_id}, 'now()','now()', ${uuidString}, ${eventUrl}, 'confirmed' , 'meeting', ${baseOptions}, ${baseStats} )`;

  counterOfEventsToAdd++;
};
const runCreationQuery = async () => {
  createEventQueries = createEventQueries + ";";

  if (createEventQueries) {
    console.log("     ");
    console.log(" ⚙️⚙️⚙️ ");
    console.log("     ");
    console.log(" createEventQueries");
    console.log(createEventQueries);

    const res = await client.query(createEventQueries);
    console.log("res", res);
    return res;
  }
};

const client = new Client({
  host: "localhost",
  user: config.db_user,
  password: config.db_pass,
  database: config.db_name,
});

(async () => {
  console.log("⌛ interroger la BDD mobilizon postgresql");

  await client.connect();
  console.log("✅ OK connecté à postgresql");
  console.log(" ");
  const res = await client.query("SELECT * from events");
  console.log("💾 évènements enregistrés dans mobilizon : ", res.rows.length); // Hello world!

  res.rows.forEach((item) => {
    localMobilizonEventsByTitle.push(item.title);

    console.log("   🟢 ", item.begins_on, item.ends_on, item.title, item.url);
  });

  console.log("⌛ lecture du flux rss : " + config.rss_feed_url);
  let feed = await parser.parseURL(config.rss_feed_url);
  console.log("✅ flux rss obtenu");
  console.log(feed.title);

  console.log("⚙️ interprétation des évènements");
  console.log(
    "⌛ trouver les évènements qui ne font pas partie de la BDD mobilizon postgresql"
  );
  feed.items.forEach((rssEvent) => {
    console.log(rssEvent.title);
    // console.log('item', item)
    doesThisEventAlreadyExistInLocalEvents(rssEvent);
  });

  // @ts-ignore
  console.log("➕ rajouter les évènements manquants à la base mobilizon".blue);

  await runCreationQuery();
  // @ts-ignore
  console.log(" ---------- ".green);
  // @ts-ignore
  console.log(counterOfEventsToAdd, " évènements ajoutés ".green);
  // @ts-ignore
  console.log(" ---------- ".green);
  // @ts-ignore
  console.log("✅ ça c'est fait ".green);

  await client.end();
})();