import { readFileSync } from 'node:fs'
import { dirname, join } from 'node:path'
import { fileURLToPath } from 'node:url'
import { describe, expect, it } from 'vitest'
import { CODE_LIKE_ATTRIBUTE_WORDS } from '../code-pattern-grammar.js'

// The code-like lexicon is drift-locked between its SSOT export
// (lib/code-pattern-grammar.CODE_LIKE_ATTRIBUTE_WORDS) and the authoring doc
// that teaches it (create-data-model levels/attributes.md, block
// `code-like-lexicon:v1`) — same discipline as platform-capabilities:v1.

const HERE = dirname(fileURLToPath(import.meta.url))

function attributesMdPath(): string {
  // Source tree: business-analyse/create-data-model ; deployed: ba-create-data-model.
  const source = join(HERE, '..', '..', 'business-analyse', 'create-data-model', 'levels', 'attributes.md')
  try {
    readFileSync(source)
    return source
  } catch {
    return join(HERE, '..', '..', 'ba-create-data-model', 'levels', 'attributes.md')
  }
}

describe('code-like-lexicon:v1 — attributes.md ⇔ lib drift lock', () => {
  it('the doc block lists exactly the exported lexicon words', () => {
    const md = readFileSync(attributesMdPath(), 'utf8')
    const block = /<!-- code-like-lexicon:v1 -->([\s\S]*?)<!-- \/code-like-lexicon:v1 -->/.exec(md)?.[1]
    expect(block, 'attributes.md lost the code-like-lexicon:v1 block').toBeTruthy()
    // The lexicon words are the backticked tokens AFTER the colon — the prose
    // before it backticks examples (`NumeroClient`, `Preference`, `ReferenceId`).
    const listPart = block!.split(':').at(-1)!
    const words = [...listPart.matchAll(/`([a-z]+)`/g)].map((m) => m[1])
    expect(words).toEqual([...CODE_LIKE_ATTRIBUTE_WORDS])
  })
})