// bazarr's events. The tool runtime imports this once the broker is bound. Bazarr's one genuinely
// observable thing is a subtitle arriving: it works away in the background, searching providers for
// the missing-subtitle list, and when it succeeds a subtitle appears in its history. That is worth
// announcing to the mesh.
//
// Emits (novox/hq ADR 0041/0042):
//   module.bazarr.subtitle.downloaded   — a subtitle was fetched for an episode or movie
//
// Bazarr has nothing on the mesh it usefully reacts to (a download completing is Sonarr/Radarr's
// business, and they trigger Bazarr directly), so it consumes nothing — a pure emitter.
//
// The event is observation-based: poll history and diff. Primed silently on the first look, or a
// restart would re-announce the whole recent history as freshly downloaded.

import { emit } from "@novox/mesh-sdk/events";
import { BazarrClient } from "./client.js";

const bazarr = BazarrClient.fromEnv();

const seen = new Set<string>();
let primed = false;
async function pollHistory(): Promise<void> {
  const entries = await bazarr.getHistory(40);
  for (const entry of entries) {
    if (seen.has(entry.id)) continue;
    if (primed) {
      await emit("subtitle.downloaded", {
        kind: entry.kind,
        title: entry.title,
        language: entry.language,
        provider: entry.provider,
        path: entry.path,
      });
    }
    seen.add(entry.id);
  }
  primed = true;
}

const tick = (fn: () => Promise<void>, everyMs: number): void => {
  const run = (): void => void fn().catch((err) => console.error(`[bazarr] ${err}`));
  setInterval(run, everyMs);
  run();
};
tick(pollHistory, 60_000);

console.log("[bazarr] watching subtitle-download history");