// Unit tests for registry loading — validates the path resolution and
// structural invariants of deploy-registry.json.
// Run with: node --test test/registry-loader.test.js
import assert from 'node:assert/strict';
import { test } from 'node:test';
import fs from 'node:fs';
import path from 'node:path';
import { fileURLToPath } from 'node:url';

// On Bruno the registry is bind-mounted into the container at /app/deploy-registry.json
// (process.cwd() = /app). Locally (dev on gal), it lives in coder-core.
// Accept an override via env var so CI / test runners can point at any copy.
const ROOT = path.resolve(path.dirname(fileURLToPath(import.meta.url)), '..');
const REGISTRY_FILE = process.env.REGISTRY_FILE
  ?? path.join(ROOT, 'deploy-registry.json')                         // container bind-mount
  ?? path.join(ROOT, '../../coder-core/services/kua-deploy/deploy-registry.json');  // local dev fallback

// ------------------------------------------------------------------
// Bug #7 regression: DEPLOY_REGISTRY_PATH must resolve to a real file.
// In kua-mcp-core the old ROOT was computed via __dirname + "../../../"
// which overshoots to "/" inside the container. Here we validate the
// kua-deploy-native path (process.cwd() relative) and the mcp-core
// path (CODER_CORE_ROOT env-var-backed).
// ------------------------------------------------------------------

let registry;
test('registry file exists at expected path', () => {
  assert.ok(fs.existsSync(REGISTRY_FILE), `registry not found at ${REGISTRY_FILE}`);
  const raw = fs.readFileSync(REGISTRY_FILE, 'utf-8');
  registry = JSON.parse(raw);
});

test('registry has apps object', () => {
  assert.ok(registry && typeof registry.apps === 'object', 'registry.apps must be an object');
  const count = Object.keys(registry.apps).length;
  assert.ok(count >= 5, `expected at least 5 registered apps, got ${count}`);
});

test('every app has required fields', () => {
  for (const [name, cfg] of Object.entries(registry.apps)) {
    assert.ok(typeof cfg.repo_dir === 'string' && cfg.repo_dir.length > 0,
      `${name}: repo_dir must be a non-empty string`);
    assert.ok(typeof cfg.deploy_mode === 'string',
      `${name}: deploy_mode must be present`);
    assert.ok(cfg.production && typeof cfg.production === 'object',
      `${name}: production config must be present`);
  }
});

test('no app uses webhook deploy_mode (webhook path is retired)', () => {
  const webhookApps = Object.entries(registry.apps)
    .filter(([, cfg]) => cfg.deploy_mode === 'webhook')
    .map(([name]) => name);
  assert.deepEqual(webhookApps, [],
    `These apps still have deploy_mode=webhook (retire them to direct): ${webhookApps.join(', ')}`);
});

test('kua-deploy is registered in its own registry', () => {
  assert.ok('kua-deploy' in registry.apps, 'kua-deploy must be in deploy-registry.json');
  assert.equal(registry.apps['kua-deploy'].deploy_mode, 'direct');
});