// ── The engagement trigger manifest ────────────────────────────────────────
//
// ENGAGEMENT.md §4.3 property 4. CI runs `npm run engagement:manifest -- --check`
// and that is the gate; this file is here for the reason
// `checkModuleIdentifiers.test.js` exists — **a check that silently stops
// checking is worse than no check**. So there are two tests: the committed file
// is current, and the generator actually notices a changed declaration.
//
// It also makes a stale manifest fail `npm test`, which is the run a developer
// does before pushing.
process.env.DB_HOST = '127.0.0.1'
process.env.DB_PORT = '59999'

const { test, afterEach, after } = require('node:test')
const assert = require('node:assert/strict')
const fs = require('fs')
const path = require('path')

const { build } = require('../scripts/engagementManifest')
const registries = require('../src/modules/registries')
const db = require('../src/utils/db')

after(() => db.close())
afterEach(() => registries._reset())

const MANIFEST_PATH = path.join(__dirname, '..', 'engagement-triggers.json')
const serialize = (m) => `${JSON.stringify(m, null, 2)}\n`

test('the committed manifest matches the declarations in the tree', () => {
  const committed = fs.readFileSync(MANIFEST_PATH, 'utf8')
  assert.equal(
    serialize(build()),
    committed,
    'engagement-triggers.json is stale — run `npm run engagement:manifest` and commit the result',
  )
})

test('the manifest holds core\'s triggers only, never a module\'s', () => {
  // A module ships its own copy in its bundle (MODULE_API.md §6.1a), because
  // core never has its sources to analyse. If a module's declarations leaked
  // into core's manifest, the file would change depending on which modules
  // happened to be installed on the machine that regenerated it.
  registries._reset()
  const api = registries.stage('uo')
  api.registerEventTriggers([{
    id: 'uo.house.idoc_warning',
    label: 'House approaching collapse',
    ceiling: 'owner',
    variables: [{ name: 'house', type: 'string', required: true, example: 'The Silver Anvil' }],
  }])
  registries.apply(api.staged)

  const manifest = build()
  assert.equal(manifest.triggers.every((t) => t.owner === 'core'), true)
  assert.equal(manifest.triggers.some((t) => t.id === 'uo.house.idoc_warning'), false)
})

test('and it notices a changed declaration — the check is live', () => {
  const before = serialize(build())

  // Register one more trigger AS CORE, then rebuild. `build()` calls
  // registerCore(), which is a no-op once core has registered, so this lands
  // beside core's five rather than replacing them.
  registries._reset()
  const api = registries.stage('core')
  api.registerEventTriggers([{
    id: 'core.probe',
    label: 'A declaration the committed manifest does not have',
    ceiling: 'staff',
    variables: [{ name: 'why', type: 'string', required: true, example: 'proving the check works' }],
  }])
  registries.apply(api.staged)

  const after_ = serialize(build())
  assert.notEqual(after_, before)
  assert.match(after_, /core\.probe/)
})