const test = require("node:test");
const assert = require("node:assert/strict");
const { loadConfig } = require("../src/config");
const { createRuntime } = require("../src/runtime");

function testConfig() {
  return loadConfig({
    NODE_ENV: "test",
    HOST: "127.0.0.1",
    PORT: "0",
    DATABASE_PATH: ":memory:",
    APP_TIMEZONE: "America/Chicago",
    SHUTDOWN_TIMEOUT_MS: "1000",
    S3_ENDPOINT: "http://seaweedfs:8333",
    S3_REGION: "us-east-1",
    S3_BUCKET: "announcements",
    S3_ACCESS_KEY_ID: "access-key-that-must-not-leak",
    S3_SECRET_ACCESS_KEY: "secret-key-that-must-not-leak",
    S3_FORCE_PATH_STYLE: "true",
    MQTT_URL: "mqtt://broker:1883",
    MQTT_PASSWORD: "mqtt-password-that-must-not-leak",
    HA_WEBHOOK_URL: "http://home-assistant:8123/api/webhook/private-id",
  });
}

const silentLogger = {
  info() {},
  warn() {},
  error() {},
};

function testStorage() {
  return {
    async start() {},
    stop() {},
    health() {
      return {
        status: "degraded",
        checkedAt: "2026-08-16T00:00:00.000Z",
        lastSuccessAt: null,
        code: "STORAGE_UNAVAILABLE",
        message: "Object storage is unavailable",
      };
    },
  };
}

async function responseJson(baseUrl, path, init) {
  const response = await fetch(`${baseUrl}${path}`, init);
  return { response, body: await response.json() };
}

test("HTTP foundation exposes live, ready, detailed health, and persisted settings", async (t) => {
  const runtime = createRuntime({
    config: testConfig(),
    logger: silentLogger,
    storage: testStorage(),
  });
  await runtime.start();
  t.after(() => runtime.stop("test cleanup"));
  const baseUrl = `http://127.0.0.1:${runtime.address.port}`;

  const live = await responseJson(baseUrl, "/health/live");
  assert.equal(live.response.status, 200);
  assert.deepEqual(live.body, { status: "ok" });

  const ready = await responseJson(baseUrl, "/health/ready");
  assert.equal(ready.response.status, 200);
  assert.equal(ready.body.status, "ready");

  const status = await responseJson(baseUrl, "/api/health");
  assert.equal(status.response.status, 200);
  assert.equal(status.body.status, "degraded");
  assert.equal(status.body.services.database.currentSchemaVersion, 1);
  assert.equal(status.body.services.storage.status, "degraded");
  const statusText = JSON.stringify(status.body);
  assert.doesNotMatch(statusText, /access-key-that-must-not-leak/);
  assert.doesNotMatch(statusText, /secret-key-that-must-not-leak/);
  assert.doesNotMatch(statusText, /mqtt-password-that-must-not-leak/);
  assert.doesNotMatch(statusText, /private-id/);

  const statusAlias = await responseJson(baseUrl, "/api/status");
  assert.equal(statusAlias.response.status, 200);
  assert.deepEqual(statusAlias.body, status.body);

  const initial = await responseJson(baseUrl, "/api/settings");
  assert.equal(initial.body.defaultBackgroundDarkened, false);

  const changed = await responseJson(baseUrl, "/api/settings", {
    method: "PATCH",
    headers: { "content-type": "application/json" },
    body: JSON.stringify({
      defaultBackgroundDarkened: true,
      defaultDurationMs: 9000,
    }),
  });
  assert.equal(changed.response.status, 200);
  assert.equal(changed.body.revision, 2);
  assert.equal(changed.body.defaultBackgroundDarkened, true);

  const reread = await responseJson(baseUrl, "/api/settings");
  assert.equal(reread.body.defaultDurationMs, 9000);
});

test("invalid settings receive a structured client error", async (t) => {
  const runtime = createRuntime({
    config: testConfig(),
    logger: silentLogger,
    storage: testStorage(),
  });
  await runtime.start();
  t.after(() => runtime.stop("test cleanup"));
  const baseUrl = `http://127.0.0.1:${runtime.address.port}`;

  const result = await responseJson(baseUrl, "/api/settings", {
    method: "PATCH",
    headers: { "content-type": "application/json" },
    body: JSON.stringify({ defaultBackgroundDarkened: 0.25 }),
  });

  assert.equal(result.response.status, 400);
  assert.equal(result.body.error.code, "INVALID_SETTINGS");
});

test("liveness stays up while critical readiness failures return 503", async (t) => {
  const runtime = createRuntime({
    config: testConfig(),
    logger: silentLogger,
    storage: testStorage(),
  });
  await runtime.start();
  t.after(() => runtime.stop("test cleanup"));
  const baseUrl = `http://127.0.0.1:${runtime.address.port}`;

  runtime.lifecycle.ready = false;
  let live = await responseJson(baseUrl, "/health/live");
  let ready = await responseJson(baseUrl, "/health/ready");
  assert.equal(live.response.status, 200);
  assert.equal(ready.response.status, 503);
  assert.equal(ready.body.status, "not_ready");

  runtime.lifecycle.ready = true;
  runtime.migrations.pendingVersions.push(2);
  ready = await responseJson(baseUrl, "/health/ready");
  assert.equal(ready.response.status, 503);
  assert.equal(ready.body.checks.migrations, "pending");

  runtime.migrations.pendingVersions.length = 0;
  runtime.database.close();
  live = await responseJson(baseUrl, "/health/live");
  ready = await responseJson(baseUrl, "/health/ready");
  assert.equal(live.response.status, 200);
  assert.equal(ready.response.status, 503);
  assert.equal(ready.body.checks.database, "error");
});

test("runtime startup and shutdown are idempotent", async () => {
  const runtime = createRuntime({
    config: testConfig(),
    logger: silentLogger,
    storage: testStorage(),
  });
  const [firstAddress, secondAddress] = await Promise.all([
    runtime.start(),
    runtime.start(),
  ]);
  assert.deepEqual(firstAddress, secondAddress);
  assert.equal(runtime.lifecycle.ready, true);

  await Promise.all([runtime.stop("test"), runtime.stop("test")]);
  assert.equal(runtime.lifecycle.ready, false);
  assert.equal(runtime.database.open, false);
});