import { Hono } from 'hono'
import { getPublicStats } from '../engine/analytics.js'

export const statsRouter = new Hono()

// GET /public — aggregate stats for last 30 days, no PII
statsRouter.get('/public', (c) => {
  const days = Math.min(parseInt(c.req.query('days') || '30'), 90)
  const rows = getPublicStats(days)

  // Group by date for easier consumption
  const byDate: Record<string, Record<string, number>> = {}
  for (const row of rows) {
    if (!byDate[row.date]) byDate[row.date] = {}
    byDate[row.date][row.metric] = row.value
  }

  return c.json({ stats: byDate })
})