/**
 * Import tasks, goals and areas into the private `tasks` schema (idempotent).
 *
 *   bun scripts/tasks-import.ts data/tasks/daisy-import.json             # insert what is missing
 *   bun scripts/tasks-import.ts --dry-run data/tasks/daisy-import.json   # validate only
 *   bun scripts/tasks-import.ts --update  data/tasks/daisy-import.json   # also overwrite existing rows
 *
 * Dedupe: areas on slug, goals on title, tasks on area + title (case-insensitive).
 * Uses DB_URL (the app role on prod, personal_dev on dev).
 */
import { readFile } from 'node:fs/promises';
import { drizzle } from 'drizzle-orm/postgres-js';
import postgres from 'postgres';
import { importSeed, seedFile } from '../src/lib/server/tasks';

const args = process.argv.slice(2);
const dryRun = args.includes('--dry-run');
const update = args.includes('--update');
const files = args.filter((a) => !a.startsWith('--'));
if (files.length !== 1) {
	console.error('usage: bun scripts/tasks-import.ts [--dry-run] [--update] <seed.json>');
	process.exit(2);
}
const parsed = seedFile.safeParse(JSON.parse(await readFile(files[0], 'utf8')));
if (!parsed.success) {
	for (const issue of parsed.error.issues.slice(0, 50))
		console.error(`${issue.path.join('.')}: ${issue.message}`);
	process.exit(1);
}
const seed = parsed.data;
console.log(
	`Valid: ${seed.areas.length} areas, ${seed.goals.length} goals, ${seed.tasks.length} tasks`
);
if (dryRun) process.exit(0);
if (!process.env.DB_URL) throw new Error('DB_URL is required');
const client = postgres(process.env.DB_URL, { max: 1, onnotice: () => {} });
try {
	const r = await importSeed(drizzle({ client }), seed, { update });
	console.log(
		`areas: ${r.areas.inserted} inserted, ${r.areas.existing} existing; ` +
			`goals: ${r.goals.inserted} inserted, ${r.goals.existing} existing, ${r.goals.updated} updated; ` +
			`tasks: ${r.tasks.inserted} inserted, ${r.tasks.existing} existing, ${r.tasks.updated} updated`
	);
} finally {
	await client.end();
}