/**
 * The mesh assigns sonarr's tool runtime, and it serves sonarr's tools over an account the mesh
 * delivered — the Servarr case of novox/hq ADR 0052.
 *
 * assigned-plex proved a tools+events module that self-detects its token from a mounted config dir.
 * This proves that self-configuring pattern generalises to the Servarr family: sonarr's runtime
 * detects its API key from the server's own config.xml (a file resource stands in for the running
 * Sonarr here), registers its tools, and serves them under a scoped account. There is no live Sonarr
 * to reach — that the serve queue is bound is the proof the key was detected and the tools loaded.
 *
 *   MESH_LAB_HOST_BINARY=.../mesh-host   MESH_LAB_BUNDLE=.../examples/substrate-first-node.lock
 *   scripts/build-module-runtime.sh sonarr builds mesh-runtime-sonarr:development into the local
 *   daemon, which scenarios/sonarr-node.yml stocks — so no MESH_LAB_RUNTIME here; the host pulls it.
 */

import { test, before, after } from "node:test";
import assert from "node:assert/strict";
import { existsSync, readFileSync } from "node:fs";
import { loadScenario } from "../../src/declaration/parse.ts";
import { raise } from "../../src/lifecycle/raise.ts";
import { destroy, exec } from "../../src/lifecycle/operate.ts";
import { hostBinaryPath, HOST_PATH } from "../../src/lifecycle/place.ts";
import { labIsUsable, destroyAll, substrateBundle, onTheMachine } from "./harness.ts";
import type { HeldImage } from "../../src/pinning.ts";

const capability = await labIsUsable();
const binary = hostBinaryPath();
const bundle = process.env["MESH_LAB_BUNDLE"] ?? "";

const skip = !capability.usable
  ? `lab not usable: ${capability.why}`
  : !binary || !existsSync(binary)
    ? "MESH_LAB_HOST_BINARY is not set to a built mesh-host"
    : !bundle || !existsSync(bundle)
      ? "MESH_LAB_BUNDLE is not set to a substrate bundle (mesh-host examples/)"
      : false;

const SCENARIO = "sonarr-node";
const MACHINE = "anchor";

let instanceId = "";
let held: HeldImage[] = [];

function quote(s: string): string {
  return `'${s.replaceAll("'", `'\\''`)}'`;
}

async function on(command: string, timeoutMs?: number): Promise<{ out: string; ok: boolean }> {
  const { stdout } = await exec(instanceId, MACHINE, [
    "sh", "-c", `exec 2>&1\n${command}\necho "__exit=$?"`,
  ], timeoutMs);
  const marker = stdout.lastIndexOf("__exit=");
  if (marker < 0) return { out: stdout, ok: false };
  return { out: stdout.slice(0, marker), ok: stdout.slice(marker + 7).trim() === "0" };
}

async function must(command: string, timeoutMs?: number): Promise<string> {
  const { out, ok } = await on(command, timeoutMs);
  if (!ok) throw new Error(`${MACHINE}: ${command}\n${out}`);
  return out;
}

async function mesh(command: string, timeoutMs?: number): Promise<string> {
  return must(`docker exec mesh-control /mesh-control ${command}`, timeoutMs);
}

/** What a manifest's image reference becomes on the machine — ours by ID, everything else as written. */
function pinned(reference: string): string {
  return onTheMachine(reference, held);
}

function bundleFor(images: HeldImage[]): string {
  return substrateBundle(bundle, images);
}

function tokenFrom(said: string): string {
  const found = said.split("\n").map((l) => l.trim()).find((l) => l.length > 100 && !l.includes(" "));
  assert.ok(found, `no token in:\n${said}`);
  return found;
}

async function settled(withinMs = 480_000): Promise<void> {
  const until = Date.now() + withinMs;
  let last = "";
  while (Date.now() < until) {
    const asked = await on(`docker exec mesh-control /mesh-control status --json`);
    if (asked.ok) {
      try {
        const state = JSON.parse(asked.out) as {
          wrong: { node: string; outcome: string }[];
          waiting: { node: string }[];
          reported: { node: string; outcome: string; current: boolean }[];
        };
        const bad = state.wrong.find((w) => w.node === MACHINE);
        if (bad) throw new Error(`${MACHINE} did not apply what it was sent: ${bad.outcome}\n${asked.out}`);
        const word = state.reported.find((r) => r.node === MACHINE);
        if (!state.waiting.some((w) => w.node === MACHINE) && word?.outcome === "applied" && word.current) return;
        last = asked.out;
      } catch (err) {
        if (err instanceof Error && err.message.includes("did not apply")) throw err;
        last = asked.out;
      }
    }
    await new Promise((r) => setTimeout(r, 5000));
  }
  throw new Error(`${MACHINE} never caught up within ${Math.round(withinMs / 1000)}s. Last:\n${last}`);
}

before(async () => {
  if (skip) return;

  const raised = await raise(loadScenario(`scenarios/${SCENARIO}.yml`), {
    onProgress: (m) => console.log(`raise: ${m}`),
  });
  instanceId = raised.instanceId;
  held = raised.images;

  await must(`cat > /tmp/substrate.lock <<'MESHBUNDLE'\n${bundleFor(raised.images)}\nMESHBUNDLE`);
  await must(`${HOST_PATH} apply /tmp/substrate.lock`, 600_000);
  const up = await must(`docker ps --format '{{.Names}}'`);
  for (const c of ["mesh-store", "mesh-broker", "mesh-control"]) {
    assert.match(up, new RegExp(c), `the substrate did not raise ${c}:\n${up}`);
  }

  await mesh(`node add ${MACHINE}`);
  const token = tokenFrom(await mesh(`token issue --node ${MACHINE}`));
  await must(`${HOST_PATH} enrol --token ${quote(token)}`);
  await must(`nohup ${HOST_PATH} run > /var/log/mesh-host.log 2>&1 & sleep 3`);
}, { timeout: 1_800_000 });

after(async () => {
  if (instanceId) await destroy(instanceId);
  await destroyAll(`${SCENARIO}-`);
}, { timeout: 600_000 });

test("the mesh assigns sonarr's runtime, and it detects its key and serves its tools", {
  skip, timeout: 900_000,
}, async () => {
  // A minimal sonarr manifest: its tool runtime, and a config.xml the runtime detects its API key
  // from — the file resource stands in for the running Sonarr that would write it. No Sonarr server
  // or media mounts; the tools simply have nothing live to reach.
  const manifest = JSON.stringify({
    module: "sonarr",
    version: "1",
    emits: ["module.sonarr.episode.grabbed", "module.sonarr.download.completed"],
    consumes: [],
    "own-secrets": { broker: "/var/lib/mesh/sonarr/broker" },
    resources: [
      { id: "mesh-state", type: "directory", path: "/var/lib/mesh/sonarr", mode: "0700" },
      { id: "config", type: "directory", path: "/services/sonarr/config", mode: "0700" },
      {
        id: "config-xml", type: "file", path: "/services/sonarr/config/config.xml", mode: "0644",
        content: "<Config>\n  <Port>8989</Port>\n  <ApiKey>labdetectedapikey0000000000000000</ApiKey>\n</Config>\n",
      },
      {
        id: "runtime", type: "container", name: "mesh-sonarr", image: pinned("mesh-runtime-sonarr"),
        network: "host",
        volumes: [
          "/var/lib/mesh/sonarr/broker:/run/secrets/broker:ro",
          "/services/sonarr/config:/var/lib/sonarr/config:ro",
        ],
        env: {
          MESH_BROKER_FILE: "/run/secrets/broker",
          MESH_SONARR_URL: "http://127.0.0.1:8989",
          MESH_SONARR_CONFIG_DIR: "/var/lib/sonarr/config",
        },
      },
    ],
  });
  await must(`printf %s ${quote(manifest)} > /tmp/sonarr.json && docker cp /tmp/sonarr.json mesh-control:/sonarr.json`);
  await mesh("module add /sonarr.json");

  const issued = await mesh(`module issue sonarr --node ${MACHINE}`);
  assert.match(issued, /scoped to what it emits and consumes/, issued);
  await mesh(`assign ${MACHINE} sonarr`);
  await mesh(`push ${MACHINE}`);
  await settled();

  const running = await must(`docker ps --format '{{.Names}}'`);
  assert.match(running, /mesh-sonarr/,
    `sonarr's runtime was assigned and is not running:\n${(await on(`tail -30 /var/log/mesh-host.log`)).out}`);

  const credential = await must(`cat /var/lib/mesh/sonarr/broker`);
  assert.match(credential, /"url":"amqps:\/\/anchor-sonarr:/, `not the scoped account:\n${credential}`);
  assert.doesNotMatch(credential, /guest:guest/, "sonarr's runtime holds the broker's own account");
  assert.match(credential, /"fingerprint":"(sha256:)?[0-9a-f]{64}"/, "no fingerprint to pin the broker");

  // The runtime detected its API key from config.xml, registered its tools, and bound their serve
  // queues — the queue on the broker is the proof the whole chain worked with no live Sonarr.
  let served = "";
  const untilServing = Date.now() + 60_000;
  while (Date.now() < untilServing) {
    served = await must(`docker exec mesh-broker lavinmqctl list_queues name 2>&1 || true`);
    if (/serve\.sonarr\.sonarr_status/.test(served)) break;
    await new Promise((r) => setTimeout(r, 3000));
  }
  assert.match(served, /serve\.sonarr\.sonarr_status/,
    `sonarr's runtime never bound its serve queue (key not detected?):\n` +
      `${(await on(`docker logs mesh-sonarr 2>&1 | tail -20`)).out}\n---\n${served}`);

  // A caller invokes sonarr_status over the mesh: it routes to the assigned runtime, which runs
  // sonarr's real code and reports Sonarr unreachable (there is none). A reply — not a timeout — is
  // the proof the invocation reached the runtime under its scoped account.
  const invoked = await on(
    `docker run --rm --network host -e MESH_BROKER_URL=amqp://guest:guest@127.0.0.1:5672/ ` +
      `${pinned("mesh-runtime-sonarr")} invoke sonarr sonarr_status`,
    120_000,
  );
  assert.doesNotMatch(invoked.out, /timed out/,
    `sonarr_status timed out — nothing served the invocation:\n${invoked.out}`);

  const users = await must(`docker exec mesh-broker lavinmqctl list_users 2>&1`);
  assert.match(users, /anchor-sonarr/, `the scoped account is not on the broker:\n${users}`);
});