import { NextResponse } from 'next/server';
import db from '@/lib/db';

export const dynamic = 'force-dynamic';

type Params = { params: Promise<{ id: string }> };

export async function GET(_req: Request, { params }: Params) {
  const { id } = await params;
  const counter = db.prepare('SELECT * FROM counters WHERE id = ?').get(Number(id));
  if (!counter) return NextResponse.json({ error: 'Not found' }, { status: 404 });

  const cutoff = Date.now() - 365 * 24 * 60 * 60 * 1000;

  const dailyActivity = db.prepare(`
    SELECT
      date(created_at / 1000, 'unixepoch', 'localtime') AS date,
      SUM(delta) AS value
    FROM events
    WHERE counter_id = ? AND created_at >= ?
    GROUP BY date
    HAVING SUM(delta) > 0
    ORDER BY date ASC
  `).all(Number(id), cutoff);

  const allTimeTotal = (db.prepare(
    'SELECT COALESCE(SUM(delta), 0) AS total FROM events WHERE counter_id = ?'
  ).get(Number(id)) as { total: number }).total;

  return NextResponse.json({ counter, dailyActivity, allTimeTotal });
}