// One-off/backfill: give manual house.listings rows with a Funda, Pararius, Kamernet or
// Vesteda link that site's (source, source_id), so a later scrape updates them instead
// of adding copies. Rows whose key another row already has are reported, not changed.
//
//   DB_URL=... bun scripts/house-rekey.ts [--dry-run]
//   scripts/house-db.sh is for house-listing.ts; run this with a role that may update listings.
import postgres from 'postgres';
import { siteKeyFromUrl } from '../src/lib/house-tracker/link-key';

const dryRun = process.argv.includes('--dry-run');
const dbUrl = process.env.DB_URL ?? process.env.DATABASE_URL;
if (!dbUrl) throw new Error('DB_URL is not set');
const sql = postgres(dbUrl, { max: 1, onnotice: () => {} });

try {
	await sql.begin(async (tx) => {
		const rows = await tx<{ id: number; source_id: string; url: string }[]>`
			SELECT id, source_id, url FROM house.listings WHERE source = 'manual' ORDER BY id FOR UPDATE`;
		const claimed = new Set<string>();
		for (const row of rows) {
			const key = siteKeyFromUrl(row.url);
			if (!key) continue;
			const pair = `${key.source}/${key.sourceId}`;
			const [owner] = await tx<{ id: number }[]>`SELECT id FROM house.listings
				WHERE source = ${key.source} AND source_id = ${key.sourceId}`;
			if (owner || claimed.has(pair)) {
				console.log(
					`#${row.id} conflict: ${pair} is already #${owner?.id ?? '(another manual row)'}, kept manual`
				);
				continue;
			}
			claimed.add(pair);
			console.log(`#${row.id} ${row.source_id} -> ${pair}${dryRun ? ' (dry run)' : ''}`);
			if (!dryRun)
				await tx`UPDATE house.listings SET source = ${key.source}, source_id = ${key.sourceId}
					WHERE id = ${row.id}`;
		}
	});
} finally {
	await sql.end();
}