/**
 * The mesh assigns TWO media modules to one node in a single push, and they resolve and come up
 * together BECAUSE THEY ACCESS THE SAME OPERATOR-OWNED DIRECTORY — the proof of novox/hq ADR 0051
 * (04-ISSUES/036, and the migration-rehearsal media stack of 04-ISSUES/012).
 *
 * sonarr and radarr are the tightest co-access pair:
 *   - both ACCESS /services/media/downloads — the shared download spool. This is the exact duplicate
 *     path the resolver refused before ADR 0051: two modules naming one path read as two owners of
 *     it ("sonarr and radarr both declare the path"). Now each declares it as an `access`, not a
 *     `directory` resource, and an access never enters the owner map — so the pair co-resolves and a
 *     single push configures both. That is the whole point of a media stack, where the managers and
 *     the download client must see the same directory.
 *   - sonarr additionally accesses /services/media/series, radarr /services/media/movies — its own
 *     library, still operator-owned, still an access.
 *   - each OWNS its config directory (/services/{sonarr,radarr}/config), which the mesh does create.
 *
 * The host refuses an access whose path is ABSENT at apply (novox/hq ADR 0051): shared data is the
 * operator's, mounted and never made as root by the container runtime. So the operator provides
 * /services/media/{downloads,series,movies} on the anchor BEFORE the modules apply — this test creates
 * them after enrol and before the one push. (No scenario primitive is needed: the directories are the
 * operator's, so an ordinary `mkdir` on the anchor stands in for the operator, exactly as it would on
 * a real node.)
 *
 * All is assigned to the one anchor, pushed ONCE, and the node converges ONCE with both modules up.
 *
 *   MESH_LAB_HOST_BINARY=.../mesh-host   MESH_LAB_BUNDLE=.../examples/substrate-first-node.lock
 *   scripts/build-module-runtime.sh {sonarr,radarr} build the runtime images into the local daemon;
 *   scenarios/catalogue-media.yml stocks them. lscr.io/linuxserver/{sonarr,radarr} must be in the
 *   local daemon; the service images are pulled from the internet. Each *arr runtime is given a lab
 *   API key so its client constructs and
 *   its tools register (as plex is given a lab token) — the server need not be configured by hand.
 */

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 = "catalogue-media";
const MACHINE = "anchor";

let instanceId = "";
/** The mesh's own images, as the machines hold them. */
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;
}

/** The control plane, a container on the node. */
async function mesh(command: string, timeoutMs?: number): Promise<string> {
  return must(`docker exec mesh-control /mesh-control ${command}`, timeoutMs);
}

/** The reference a manifest should carry, once this scenario has been raised. */
/** 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);
}

/** The substrate bundle: ours by the ID the machine holds, everything else upstream. */
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 = 600_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;

  // Raise the substrate — store, broker, control — from the bundle.
  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}`);
  }

  // The node joins its own mesh, so it is a node the mesh can assign to, and start the host so it
  // applies what it is pushed.
  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("sonarr and radarr, both accessing one operator-owned directory, co-resolve and come up in one push", {
  skip, timeout: 1_500_000,
}, async () => {
  // --- sonarr: a media app. Server + broker-bound runtime that serves tools. It ACCESSES the shared
  // download spool and its own series library (operator-owned, mounted, not owned), and OWNS its
  // config directory (mesh-created). The runtime is given a lab API key so its client constructs. ---
  const sonarrManifest = JSON.stringify({
    module: "sonarr",
    version: "1",
    emits: ["module.sonarr.episode.grabbed", "module.sonarr.download.completed"],
    consumes: [],
    "own-secrets": { broker: "/var/lib/mesh/sonarr/broker" },
    accesses: [
      { path: "/services/media/downloads", mode: "read-write" },
      { path: "/services/media/series", mode: "read-write" },
    ],
    resources: [
      { id: "mesh-state", type: "directory", path: "/var/lib/mesh/sonarr", mode: "0700" },
      { id: "config", type: "directory", path: "/services/sonarr/config", mode: "0700", owner: "1000:1000" },
      {
        id: "server", type: "container", name: "sonarr", image: pinned("lscr.io/linuxserver/sonarr"),
        env: { PUID: "1000", PGID: "1000", TZ: "Etc/UTC" },
        ports: ["8989:8989"],
        volumes: [
          "/services/sonarr/config:/config",
          "/services/media/series:/series",
          "/services/media/downloads:/downloads",
        ],
      },
      {
        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",
          MESH_SONARR_API_KEY: "lab-sonarr-key",
        },
      },
    ],
  });

  // --- radarr: the second media app. Shares /services/media/downloads with sonarr — the co-access —
  // and additionally accesses its own /services/media/movies. ---------------------------------------
  const radarrManifest = JSON.stringify({
    module: "radarr",
    version: "1",
    emits: ["module.radarr.movie.grabbed", "module.radarr.download.completed"],
    consumes: [],
    "own-secrets": { broker: "/var/lib/mesh/radarr/broker" },
    accesses: [
      { path: "/services/media/downloads", mode: "read-write" },
      { path: "/services/media/movies", mode: "read-write" },
    ],
    resources: [
      { id: "mesh-state", type: "directory", path: "/var/lib/mesh/radarr", mode: "0700" },
      { id: "config", type: "directory", path: "/services/radarr/config", mode: "0700", owner: "1000:1000" },
      {
        id: "server", type: "container", name: "radarr", image: pinned("lscr.io/linuxserver/radarr"),
        env: { PUID: "1000", PGID: "1000", TZ: "Etc/UTC" },
        ports: ["7878:7878"],
        volumes: [
          "/services/radarr/config:/config",
          "/services/media/movies:/movies",
          "/services/media/downloads:/downloads",
        ],
      },
      {
        id: "runtime", type: "container", name: "mesh-radarr", image: pinned("mesh-runtime-radarr"),
        network: "host",
        volumes: [
          "/var/lib/mesh/radarr/broker:/run/secrets/broker:ro",
          "/services/radarr/config:/var/lib/radarr/config:ro",
        ],
        env: {
          MESH_BROKER_FILE: "/run/secrets/broker",
          MESH_RADARR_URL: "http://127.0.0.1:7878",
          MESH_RADARR_CONFIG_DIR: "/var/lib/radarr/config",
          MESH_RADARR_API_KEY: "lab-radarr-key",
        },
      },
    ],
  });

  // --- add, issue (both emit events → each gets a scoped broker account), assign ------------------
  async function add(name: string, manifest: string): Promise<void> {
    await must(`printf %s ${quote(manifest)} > /tmp/${name}.json && docker cp /tmp/${name}.json mesh-control:/${name}.json`);
    await mesh(`module add /${name}.json`);
  }

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

  await add("radarr", radarrManifest);
  const radarrIssued = await mesh(`module issue radarr --node ${MACHINE}`);
  assert.match(radarrIssued, /scoped to what it emits and consumes/, radarrIssued);
  await mesh(`assign ${MACHINE} radarr`);

  // --- the operator provides the shared, pre-existing data BEFORE anything applies (ADR 0051) ------
  // The host mounts an access and creates nothing, refusing any path that is absent. These three are
  // the operator's — a media library and a download spool that existed before the mesh — so an
  // ordinary mkdir on the node stands in for the operator, and 1000:1000 matches the *arr PUID/PGID.
  await must(`mkdir -p /services/media/downloads /services/media/series /services/media/movies`);
  await must(`chown -R 1000:1000 /services/media`);

  // --- ONE push — THE co-access proof --------------------------------------------------------------
  // Pre-0051 this refused: sonarr and radarr both name /services/media/downloads, which the resolver
  // read as two modules owning one path. Now each ACCESSES it, so the pair co-resolves and both are
  // sent in a single declaration. A refusal here (nonzero, or "could not be resolved") is the
  // regression this bed exists to catch.
  const pushed = await on(`docker exec mesh-control /mesh-control push ${MACHINE}`);
  assert.ok(pushed.ok,
    `the co-resident push was REFUSED — the shared-access collision ADR 0051 removed is back:\n${pushed.out}`);
  assert.doesNotMatch(pushed.out, /could not be resolved|both declare the path|shared data is the operator/,
    `the push named a resolution refusal — co-access did not resolve (ADR 0051):\n${pushed.out}`);
  assert.match(pushed.out, new RegExp(`sent ${MACHINE}|node\\(s\\) told`),
    `the push did not report sending the node its declaration:\n${pushed.out}`);

  // The node applies both modules and converges once.
  await settled(1_200_000);

  // --- co-residence: every container of both modules is up on the one node -------------------------
  const running = await must(`docker ps --format '{{.Names}}'`);
  for (const name of ["sonarr", "mesh-sonarr", "radarr", "mesh-radarr"]) {
    assert.match(running, new RegExp(`(^|\\n)${name}(\\n|$)`),
      `${name} is not running after a co-resident push:\n${running}\n---host log---\n${(await on(`tail -40 /var/log/mesh-host.log`)).out}`);
  }

  // Each module got its own scoped broker account (both emit events).
  const users = await must(`docker exec mesh-broker lavinmqctl list_users 2>&1`);
  for (const acct of ["anchor-sonarr", "anchor-radarr"]) {
    assert.match(users, new RegExp(acct), `the scoped account ${acct} is not on the broker:\n${users}`);
  }

  // --- THE access, made concrete: BOTH server containers mount the SAME operator-owned directory ---
  // Two modules, one shared spool — the co-access is not just a resolution that passed, it is the
  // same host path bound into both containers. And the mesh created neither the spool nor the
  // libraries: they are the operator's, mounted as declared.
  const mountsOf = async (container: string): Promise<string> =>
    must(`docker inspect -f '{{range .Mounts}}{{.Source}}->{{.Destination}} {{end}}' ${container}`);
  const sonarrMounts = await mountsOf("sonarr");
  const radarrMounts = await mountsOf("radarr");
  assert.match(sonarrMounts, /\/services\/media\/downloads->\/downloads/,
    `sonarr does not mount the shared download spool:\n${sonarrMounts}`);
  assert.match(radarrMounts, /\/services\/media\/downloads->\/downloads/,
    `radarr does not mount the shared download spool:\n${radarrMounts}`);
  assert.match(sonarrMounts, /\/services\/media\/series->\/series/,
    `sonarr does not mount its series library:\n${sonarrMounts}`);
  assert.match(radarrMounts, /\/services\/media\/movies->\/movies/,
    `radarr does not mount its movies library:\n${radarrMounts}`);

  // --- both runtimes bind their serve queues under their scoped accounts (the tools are up) --------
  let served = "";
  const untilServing = Date.now() + 120_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) && /serve\.radarr\.radarr_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:\n${(await on(`docker logs mesh-sonarr 2>&1 | tail -20`)).out}\n---\n${served}`);
  assert.match(served, /serve\.radarr\.radarr_status/,
    `radarr's runtime never bound its serve queue:\n${(await on(`docker logs mesh-radarr 2>&1 | tail -20`)).out}\n---\n${served}`);
});