const { query } = require('../../utils/db')

const COLS = 'id, user_id, username, lost_address, cleared_at, acknowledged_at'

// Accounts cleared by the Phase 1b de-duplication, newest first.
async function list() {
  return query(`SELECT ${COLS} FROM email_dedupe_report ORDER BY cleared_at DESC, id DESC`)
}

async function countUnacknowledged() {
  const rows = await query('SELECT COUNT(*) AS n FROM email_dedupe_report WHERE acknowledged_at IS NULL')
  return Number(rows[0] ? rows[0].n : 0)
}

// Dismiss the whole report. Idempotent — an already-acknowledged row is skipped
// so a second dismissal cannot rewrite when it happened.
async function acknowledgeAll() {
  const res = await query('UPDATE email_dedupe_report SET acknowledged_at = NOW() WHERE acknowledged_at IS NULL')
  return res.affectedRows || 0
}

module.exports = { list, countUnacknowledged, acknowledgeAll }