/**
 * Assemble connectors/registry.json from every connectors/<engine>/<id>/meta.json.
 * Per-connector meta files avoid merge conflicts; registry.json stays the machine-readable
 * registry required by CLAUDE.md §106. Run: pnpm tsx scripts/build-registry.ts
 */
import { readdirSync, readFileSync, statSync, writeFileSync } from 'node:fs';
import path from 'node:path';
import { fileURLToPath } from 'node:url';
import { RegistrySchema, ConnectorMetaSchema } from '../packages/connectors/src/types.ts';

const root = path.resolve(path.dirname(fileURLToPath(import.meta.url)), '..');
const dir = path.join(root, 'connectors');
const metas: unknown[] = [];
for (const engine of readdirSync(dir)) {
  const p = path.join(dir, engine);
  if (!statSync(p).isDirectory() || engine === 'node_modules') continue;
  for (const id of readdirSync(p)) {
    const metaPath = path.join(p, id, 'meta.json');
    try {
      const meta = JSON.parse(readFileSync(metaPath, 'utf8'));
      const parsed = ConnectorMetaSchema.parse({ ...meta, module: meta.module ?? `${engine}/${id}` });
      if (parsed.id !== id) throw new Error(`meta.id ${parsed.id} ≠ folder ${id}`);
      metas.push(parsed);
    } catch (err) {
      if ((err as NodeJS.ErrnoException).code === 'ENOENT') continue;
      throw new Error(`${metaPath}: ${err instanceof Error ? err.message : String(err)}`);
    }
  }
}
metas.sort((a, b) => ((a as { id: string }).id < (b as { id: string }).id ? -1 : 1));
const registry = RegistrySchema.parse({ version: '1.0', connectors: metas });
writeFileSync(path.join(dir, 'registry.json'), JSON.stringify(registry, null, 2) + '\n');
console.log(`[registry] ${registry.connectors.length} connectors written to connectors/registry.json`);