88 lines
2.1 KiB
JavaScript
88 lines
2.1 KiB
JavaScript
const express = require('express')
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const subDays = require('date-fns/sub_days')
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const startOfDay = require('date-fns/start_of_day')
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const startOfSecond = require('date-fns/start_of_second')
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const StatsAPI = require('./StatsAPI')
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function serveArbitraryStats(req, res) {
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const now = startOfSecond(new Date())
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const since = req.query.since ? new Date(req.query.since) : subDays(now, 30)
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const until = req.query.until ? new Date(req.query.until) : now
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if (isNaN(since.getTime())) {
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return res.status(403).send({ error: '?since is not a valid date' })
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}
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if (isNaN(until.getTime())) {
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return res.status(403).send({ error: '?until is not a valid date' })
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}
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if (until <= since) {
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return res
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.status(403)
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.send({ error: '?until date must come after ?since date' })
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}
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if (until > now) {
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return res.status(403).send({ error: '?until must be a date in the past' })
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}
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StatsAPI.getStats(since, until, (error, stats) => {
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if (error) {
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console.error(error)
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res.status(500).send({ error: 'Unable to fetch stats' })
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} else {
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res
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.set({
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'Cache-Control': 'public, max-age=60',
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'Cache-Tag': 'stats'
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})
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.send(stats)
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}
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})
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}
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function servePastDaysStats(days, req, res) {
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const until = startOfDay(new Date())
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const since = subDays(until, days)
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StatsAPI.getStats(since, until, (error, stats) => {
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if (error) {
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console.error(error)
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res.status(500).send({ error: 'Unable to fetch stats' })
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} else {
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res
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.set({
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'Cache-Control': 'public, max-age=60',
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'Cache-Tag': 'stats'
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})
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.send(stats)
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}
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})
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}
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function serveLastMonthStats(req, res) {
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servePastDaysStats(30, req, res)
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}
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function serveLastWeekStats(req, res) {
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servePastDaysStats(7, req, res)
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}
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function serveLastDayStats(req, res) {
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servePastDaysStats(1, req, res)
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}
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function createStatsServer() {
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const app = express.Router()
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app.get('/', serveArbitraryStats)
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app.get('/last-month', serveLastMonthStats)
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app.get('/last-week', serveLastWeekStats)
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app.get('/last-day', serveLastDayStats)
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return app
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}
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module.exports = createStatsServer
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