import { db } from "./sql";
import { Event, type TEventEntityNew, type TGetEventsOptions } from "./component/event/events";
import { createPlaceholders, getTsNow } from "./util";
import { sendNotification } from "./sendNotification";
import minimist from "minimist";
const argv = minimist(process.argv.slice(2))
console.log("App started");
console.dir({argv})

const TODAY = getTsNow();
console.dir({TODAY});

async function events_update_db() {
  const events_fetched_currentMonth = await Event.fetch_events( TODAY.year, TODAY.month , -120 );
  console.log("events_fetched_currentMonth.length: " + events_fetched_currentMonth.length );
  const events_fetched_nextMonth = await Event.fetch_events( TODAY.year, TODAY.month + 1 , -120 );
  console.log("events_fetched_nextMonth.length: " + events_fetched_nextMonth.length );
  const events_fetched = [...events_fetched_currentMonth, ...events_fetched_nextMonth];
  console.log("events_fetched.length: " + events_fetched.length );

  const events_fetched_list_of_uids = events_fetched.map( event => { return event.uid; });
  console.dir( {events_fetched_list_of_uids} );

  const events_db_currentMonth = Event.get_events({month: {year: TODAY.year, month: TODAY.month}}, db);
  const events_db_nextMonth = Event.get_events({month: {year: TODAY.year, month: (TODAY.month + 1)}}, db);
  const events_db = [... events_db_currentMonth, ... events_db_nextMonth];
  const events_removed: Event[] = events_db.filter( (ev) => {
    return ! events_fetched_list_of_uids.includes(ev.uid);
  });

  console.dir({events_removed});

  events_removed.forEach( ev => {
    ev.set_notification("removed", db);
  });

  const placeholders = createPlaceholders( events_fetched_list_of_uids );
  const getAllRelevantEventsQuery = db.query(
    `SELECT * FROM events WHERE uid IN (${placeholders}) AND deleteDate IS NULL;`
  ).as(Event );
  const AllRelevantEvents = getAllRelevantEventsQuery.all(...events_fetched_list_of_uids);
  console.log("AllRelevantEvents.length: " + AllRelevantEvents.length );
  const eventsToInsert: TEventEntityNew[] = [];
  for ( const ev of events_fetched ) {
    console.log("loop ev  " + ev.uid + " : " + [ ev.title, ev.date_at ].join( ", " ) );
    const found = AllRelevantEvents.find(event => event.uid === ev.uid);
    if ( found ) {
      console.log("loop ev  " + ev.uid + " f: " + [ found.title, found.date_at ].join( ", " ) );
      if (
        found.title != ev.title ||
        found.description != ev.description ||
        found.date_at != ev.date_at ||
        found.time_start != ev.time_start ||
        found.time_end != ev.time_end ||
        found.posted_by != ev.posted_by ||
        found.location != ev.location ||
        found.event_type != ev.event_type ||
        found.timezone != ev.timezone ||
        found.link != ev.link
      ) {
        console.log("loop ev " + ev.uid + " c: " + [ ev.title, ev.date_at ].join( ", " ) );
        const newEventToInsert: TEventEntityNew = {... ev, notification: "changed"};
        eventsToInsert.push( newEventToInsert );
      }
    } else {
      console.log("loop ev  " + ev.uid + " n: " + [ ev.title, ev.date_at ].join( ", " ) );
      const newEventToInsert: TEventEntityNew = {... ev, notification: "new"};
      eventsToInsert.push( newEventToInsert );
    }
  }
  console.dir({eventsToInsert})
  Event.insert( eventsToInsert, db);
}

async function events_check_for_notification() {
  const where: TGetEventsOptions = {
    notification: ["new", "changed", "removed"],
    deleted: false
  }
  if ( argv.today ) {
    where.date = {
      year: TODAY.year,
      month: TODAY.month,
      day: TODAY.day
    }
  }
  const list_of_events = Event.get_events( where, db );
  console.dir({
    list_of_events,
    where
  });
  for ( const ev of list_of_events ) {
    console.log("loop list_of_events - ev: " + [ ev.uid, ev.title, ev.date_at, "notification: " + ev.notification ].join( ", " ) );
    console.log("loop list_of_events - ev 'title': " + ev.get_title() );
    const notificationOptions = {
      ntfy: null,
      discord: {
        avatar_url: ( process.env.dc_avatar_url as string),
        botname: ( process.env.dc_botname as string)
      }
    };
    await sendNotification( ev.get_title(), ev.get_body(), notificationOptions );
    if ( ev.notification == "removed" ) {
      ev.set_deleted( db );
    } else {
      ev.set_notification("done", db);
    }
  }
}

async function main ( ) {
  console.log("Excecuting main()");
  await events_update_db();
  await events_check_for_notification();
};

main();