/**
 * Vitest globalSetup — runs once in the MAIN process before any forks.
 *
 * Creates a single shared KuzuDB with full schema so that forked test
 * files only need to clear + reseed data instead of recreating the
 * entire schema each time (~29 DDL queries per file eliminated).
 *
 * The dbPath is shared with test files via vitest's provide/inject API.
 */
import path from 'path';
import kuzu from 'kuzu';
import type { GlobalSetupContext } from 'vitest/node';
import { createTempDir } from './helpers/test-db.js';
import {
  NODE_SCHEMA_QUERIES,
  REL_SCHEMA_QUERIES,
  EMBEDDING_SCHEMA,
} from '../src/core/kuzu/schema.js';

export default async function setup({ provide }: GlobalSetupContext) {
  const tmpHandle = await createTempDir('gitnexus-shared-');
  const dbPath = path.join(tmpHandle.dbPath, 'kuzu');

  // Create DB with full schema
  const db = new kuzu.Database(dbPath);
  const conn = new kuzu.Connection(db);

  for (const q of NODE_SCHEMA_QUERIES) {
    await conn.query(q);
  }
  for (const q of REL_SCHEMA_QUERIES) {
    await conn.query(q);
  }
  await conn.query(EMBEDDING_SCHEMA);

  // Pre-install FTS extension so forks don't need to download it
  try {
    await conn.query('INSTALL fts');
    await conn.query('LOAD EXTENSION fts');
  } catch {
    // FTS may already be installed system-wide — not fatal
  }

  // Close native handles explicitly on Windows (file locks require it).
  // On Linux/macOS, skip close — the N-API destructor hooks can segfault
  // or deadlock. The teardown function removes the temp directory, and
  // process exit reclaims all native resources.
  if (process.platform === 'win32') {
    conn.close();
    db.close();
  }

  // Share the dbPath with all test files via inject('kuzuDbPath')
  provide('kuzuDbPath', dbPath);

  // Teardown: remove temp directory after all tests complete
  return async () => {
    await tmpHandle.cleanup();
  };
}