// bazarr's Servarr step — run once by the host after bazarr's server starts, and run again whenever a
// binding or pair credential it reads changes (the container's `restart-on`, novox/hq ADR 0099).
//
// **A step, not a loop**: everything it does is a function of files the mesh writes, and the host
// already knows when they change. It connects to no broker.
//
// Exits non-zero when any app could not be put right — a refused credential, an unreachable app, a
// bazarr that would not keep the settings — so the node reports the step failed and the host runs it
// again on the next apply. Declared last in the manifest, so its failing gates nothing else of
// bazarr's (novox/hq ADR 0136).
//
// Reads, per app, `<dir>/<provision>.json` (the binding) and `<dir>/<provision>.secret` (the pair
// credential), where <dir> is MESH_SERVARR_DIR; and bazarr's own key from bazarr's own config.yaml
// under MESH_BAZARR_CONFIG_DIR. Never prints a key.

import { join } from "node:path";

import { apiKeyFromConfigDir } from "../apikey.js";
import { APPS, bazarrReady, readBinding, readIfThere, reconcileApp, type Http } from "./settings.js";

const dir = process.env.MESH_SERVARR_DIR ?? "/run/servarr";
const url = process.env.MESH_BAZARR_URL ?? "http://127.0.0.1:6767";
const waitSeconds = Number(process.env.MESH_BAZARR_WAIT_SECONDS ?? "180");

const http: Http = { fetch: (u, init) => fetch(u, init) };

const bazarrUp = await bazarrReady(http, { url, apiKey: "" }, waitSeconds * 1000);
if (!bazarrUp) {
  console.error(`[bazarr-servarr] bazarr did not answer at ${url} within ${waitSeconds}s`);
  process.exit(1);
}

// Read after bazarr answers: on a first start bazarr writes its config.yaml, key included, as it boots.
const apiKey = apiKeyFromConfigDir(process.env.MESH_BAZARR_CONFIG_DIR);
if (!apiKey) {
  console.error("[bazarr-servarr] no bazarr API key in bazarr's config/config.yaml under MESH_BAZARR_CONFIG_DIR");
  process.exit(1);
}
const bazarr = { url, apiKey };

let failed = 0;
for (const spec of APPS) {
  const outcome = await reconcileApp(
    http,
    bazarr,
    spec,
    await readBinding(join(dir, `${spec.provision}.json`)),
    await readIfThere(join(dir, `${spec.provision}.secret`)),
  );
  switch (outcome.result) {
    case "unchanged":
      console.log(`[bazarr-servarr] ${outcome.app}: already as the mesh says; key taken by ${outcome.app}`);
      break;
    case "written":
      console.log(`[bazarr-servarr] ${outcome.app}: wrote ${outcome.fields.join(", ")}; key taken by ${outcome.app}`);
      break;
    case "refused":
      failed++;
      console.error(`[bazarr-servarr] ${outcome.app}: ${outcome.problem}`);
      break;
  }
}
process.exitCode = failed > 0 ? 1 : 0;