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index.js
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index.js
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import express from 'express'
import path from 'path'
import { promises as fs } from 'fs'
import { calculateNamedays } from './helpers/namedays.js'
import { calculateEasterSunday, yearIsValid } from './helpers/dates.js'
import errorMessages from './errorMessages.js'
const PORT = process.env.PORT || '8080'
const __dirname = path.resolve()
const app = express()
const fixedNamedaysPath = path.join(__dirname, 'data', 'fixed_namedays.json')
const movingNamedaysPath = path.join(__dirname, 'data', 'moving_namedays.json')
app.get('/api/v1/namedays', async (req, res) => {
try {
const year = req.query.year ?? new Date().getFullYear()
if (!yearIsValid(year)) {
res.status(400)
res.send({
success: false,
message: errorMessages.invalidYear(year)
})
return
}
const [fixedNamedays, movingNamedays] = await Promise.all([
fs.readFile(fixedNamedaysPath, 'utf8'),
fs.readFile(movingNamedaysPath, 'utf8')
])
const namedays = calculateNamedays(fixedNamedays, movingNamedays, year)
res.send({
success: true,
namedays: namedays
})
} catch (err) {
console.error(err)
res.status(500)
res.send({
success: false,
message: errorMessages.unexpectedError
})
}
})
app.get('/api/v1/namedays/today', async (req, res) => {
try {
const today = new Date()
const year = today.getFullYear()
const [fixedNamedays, movingNamedays] = await Promise.all([
fs.readFile(fixedNamedaysPath, 'utf8'),
fs.readFile(movingNamedaysPath, 'utf8')
])
const namedays = calculateNamedays(fixedNamedays, movingNamedays, year)
const todaysNamedays = namedays[`${today.getDate()}/${today.getMonth() + 1}`]
res.send({
success: true,
today: todaysNamedays
})
} catch (err) {
console.error(err)
res.status(500)
res.send({
success: false,
message: errorMessages.unexpectedError
})
}
})
app.get('/api/v1/easter-day', (req, res) => {
const year = req.query.year ?? new Date().getFullYear()
if (!yearIsValid(year)) {
res.status(400)
res.send({
success: false,
message: errorMessages.invalidYear(year)
})
return
}
const easterDayTimestamp = calculateEasterSunday(year).getTime()
res.send({
success: true,
easter_day: easterDayTimestamp
})
})
app.get('/api/v1/*', async (req, res) => {
res.status(404)
res.send({
success: false,
message: `Cannot ${req.method} ${req.originalUrl}`
})
})
app.listen(PORT, () => {
console.log(`App listening on port ${PORT}`);
})