import { getDbPool } from '../../server/src/db/pool.js';

async function run() {
  const pool = getDbPool();
  const client = await pool.connect();

  try {
    await client.query('begin');
    await client.query('truncate table public.postal_area_neighbors');
    await client.query(`
      insert into public.postal_area_neighbors (postal_area_id, neighbor_postal_area_id)
      select source.id, neighbor.id
      from public.postal_areas source
      join public.postal_areas neighbor
        on source.country_code = neighbor.country_code
       and source.id <> neighbor.id
       and ST_Touches(source.geom, neighbor.geom)
    `);
    await client.query('commit');

    const summary = await client.query<{ count: string }>('select count(*)::text as count from public.postal_area_neighbors');
    console.log(`Built ${summary.rows[0]?.count ?? '0'} postal adjacency links.`);
  } catch (error) {
    await client.query('rollback');
    throw error;
  } finally {
    client.release();
    await pool.end();
  }
}

await run();