moved l-a-s in here

lib/admin/server.js

@@ -0,0 +1,26 @@
+const moment = require('moment')
+
+const db = require('../db')
+
+const CONSIDERED_UP = 30000
+
+function status () {
+  const sql = `select extract(epoch from (now() - created)) as age
+  from server_events
+  where event_type=$1
+  order by created desc
+  limit 1`
+
+  return db.oneOrNone(sql, ['ping'])
+  .then(row => {
+    if (!row) return {up: false, lastPing: null}
+
+    const age = moment.duration(row.age, 'seconds')
+    const up = age.asMilliseconds() < CONSIDERED_UP
+    const lastPing = age.humanize()
+
+    return {up, lastPing}
+  })
+}
+
+module.exports = {status}