#!/usr/bin/env node
/**
 * @module scripts/push-docs
 * @description Push this repo's PUBLIC docs to the soulcraft.com docs ingest
 * door after an npm publish (VENUE-DOCS-RELEASE-PUSH — retires the old
 * build-time docs sync).
 *
 * Contract (mirrors the reference implementation on the serving side):
 *   POST {base}/api/docs/ingest
 *   headers: x-service-secret: $DOCS_INGEST_SECRET, Content-Type: application/json
 *   body: { docs: [{ slug, title, markdown, nav: { order, section } }] }
 *   batches of 10, idempotent per slug.
 *
 * A doc is public iff its frontmatter has `public: true` AND a `slug`. The
 * frontmatter is stripped; `category` → nav.section, `order` → nav.order.
 *
 * Deliberately NOT pushed: the combined /docs landing index. It spans BOTH
 * engine corpora (this repo's and the native accelerator's), so a per-repo
 * push would clobber the union — the index is authored on the serving side.
 *
 * Env: DOCS_INGEST_SECRET (required), DOCS_INGEST_BASE (default
 * https://soulcraft.com). Exits 0 with a LOUD warning when the secret is
 * absent (the npm publish has already happened; the serving side runs its
 * interim sync on request) and exits 1 when a push actually fails — the docs
 * site would silently trail npm otherwise, and that must be visible.
 */
import * as fs from 'node:fs'
import * as path from 'node:path'

const BASE = (process.env.DOCS_INGEST_BASE || 'https://soulcraft.com').replace(/\/+$/, '')
const SECRET = process.env.DOCS_INGEST_SECRET
const DOCS_DIR = path.join(path.dirname(new URL(import.meta.url).pathname), '..', 'docs')
const BATCH = 10

if (!SECRET) {
  console.warn(
    '⚠️  DOCS PUSH SKIPPED: DOCS_INGEST_SECRET is not set.\n' +
      '    soulcraft.com/docs now TRAILS this npm release until docs are pushed.\n' +
      '    Either export DOCS_INGEST_SECRET and re-run `node scripts/push-docs.js`,\n' +
      '    or ping venue on VENUE-DOCS-RELEASE-PUSH for the interim sync.'
  )
  process.exit(0)
}

/** Minimal frontmatter split — returns [meta, body] or [null, raw]. */
function parseFrontmatter(raw) {
  const m = raw.match(/^---\n([\s\S]*?)\n---\n([\s\S]*)$/)
  if (!m) return [null, raw]
  const meta = {}
  for (const line of m[1].split('\n')) {
    const kv = line.match(/^(\w[\w-]*):\s*(.*)$/)
    if (kv) meta[kv[1]] = kv[2].trim().replace(/^["']|["']$/g, '')
  }
  return [meta, m[2]]
}

const docs = []
;(function walk(dir) {
  for (const entry of fs.readdirSync(dir, { withFileTypes: true })) {
    const full = path.join(dir, entry.name)
    if (entry.isDirectory()) walk(full)
    else if (entry.name.endsWith('.md')) {
      const [meta, body] = parseFrontmatter(fs.readFileSync(full, 'utf-8'))
      if (!meta || meta.public !== 'true' || !meta.slug) continue
      docs.push({
        slug: meta.slug,
        title: meta.title || meta.slug,
        markdown: body.trim(),
        nav: {
          order: Number.parseInt(meta.order || '99', 10) || 99,
          section: meta.category || 'guides'
        }
      })
    }
  }
})(DOCS_DIR)

if (docs.length === 0) {
  console.error('❌ DOCS PUSH FAILED: zero public docs collected — refusing to push an empty corpus.')
  process.exit(1)
}
docs.sort((a, b) => a.slug.localeCompare(b.slug))
console.log(`Pushing ${docs.length} public docs to ${BASE}/api/docs/ingest …`)

let failed = false
for (let i = 0; i < docs.length; i += BATCH) {
  const batch = docs.slice(i, i + BATCH)
  try {
    const res = await fetch(`${BASE}/api/docs/ingest`, {
      method: 'POST',
      headers: {
        'x-service-secret': SECRET,
        'Content-Type': 'application/json',
        'User-Agent': 'brainy-docs-push/1.0'
      },
      body: JSON.stringify({ docs: batch }),
      signal: AbortSignal.timeout(120_000)
    })
    if (!res.ok) {
      throw new Error(`HTTP ${res.status}: ${(await res.text()).slice(0, 300)}`)
    }
    console.log(`  batch ${i / BATCH + 1}: ${batch.map((d) => d.slug).join(', ')} → ok`)
  } catch (err) {
    failed = true
    console.error(`  batch ${i / BATCH + 1} FAILED: ${err instanceof Error ? err.message : err}`)
  }
}

if (failed) {
  console.error(
    '❌ DOCS PUSH INCOMPLETE — soulcraft.com/docs may trail npm. ' +
      'Re-run `node scripts/push-docs.js` or ping venue on VENUE-DOCS-RELEASE-PUSH.'
  )
  process.exit(1)
}
console.log('✅ Docs pushed.')