86 lines
2.9 KiB
JavaScript
86 lines
2.9 KiB
JavaScript
const _ = require('lodash/fp')
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const db = require('./db')
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const pgp = require('pg-promise')()
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function getInsertQuery (tableName, fields) {
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// outputs string like: '$1, $2, $3...' with proper No of items
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const placeholders = fields.map(function (_, i) {
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return '$' + (i + 1)
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}).join(', ')
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const query = 'INSERT INTO ' + tableName +
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' (' + fields.join(', ') + ')' +
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' VALUES' +
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' (' + placeholders + ')'
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return query
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}
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exports.recordDeviceEvent = function recordDeviceEvent (deviceId, event) {
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const sql = 'INSERT INTO device_events (device_id, event_type, ' +
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'note, device_time) VALUES ($1, $2, $3, $4)'
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const values = [deviceId, event.eventType, event.note,
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event.deviceTime]
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return db.none(sql, values)
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}
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exports.cassetteCounts = function cassetteCounts (deviceId) {
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const sql = 'SELECT cassette1, cassette2, cassette3, cassette4, number_of_cassettes FROM devices ' +
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'WHERE device_id=$1'
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return db.one(sql, [deviceId])
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.then(row => {
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const counts = []
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_.forEach(it => {
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counts.push(row[`cassette${it + 1}`])
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}, _.times(_.identity(), row.number_of_cassettes))
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return { numberOfCassettes: row.number_of_cassettes, counts }
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})
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}
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exports.recyclerCounts = function recyclerCounts (deviceId) {
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const sql = 'SELECT recycler1, recycler2, recycler3, recycler4, recycler5, recycler6, number_of_recyclers FROM devices ' +
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'WHERE device_id=$1'
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return db.one(sql, [deviceId])
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.then(row => {
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const counts = []
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_.forEach(it => {
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counts.push(row[`recycler${it + 1}`])
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}, _.times(_.identity(), row.number_of_recyclers))
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return { numberOfRecyclers: row.number_of_recyclers, counts }
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})
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}
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// Note: since we only prune on insert, we'll always have
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// last known state.
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exports.machineEvent = function machineEvent (rec) {
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const fields = ['id', 'device_id', 'event_type', 'note', 'device_time']
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const sql = getInsertQuery('machine_events', fields)
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const values = [rec.id, rec.deviceId, rec.eventType, rec.note, rec.deviceTime]
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const deleteSql = `delete from machine_events
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where created < now() - interval '1 days'`
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return db.none(sql, values)
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.then(() => db.none(deleteSql))
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}
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exports.machineEventsByIdBatch = function machineEventsByIdBatch (machineIds) {
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const formattedIds = _.map(pgp.as.text, machineIds).join(',')
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const sql = `SELECT *, (EXTRACT(EPOCH FROM (now() - created))) * 1000 AS age FROM machine_events WHERE device_id IN ($1^) ORDER BY age ASC LIMIT 1`
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return db.any(sql, [formattedIds]).then(res => {
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const events = _.map(_.mapKeys(_.camelCase))(res)
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const eventMap = _.groupBy('deviceId', events)
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return machineIds.map(id => _.prop([0], eventMap[id]))
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})
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}
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exports.machineEvents = function machineEvents () {
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const sql = 'SELECT *, (EXTRACT(EPOCH FROM (now() - created))) * 1000 AS age FROM machine_events'
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return db.any(sql, [])
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}
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