mirror of
https://github.com/mauriceboe/TREK.git
synced 2026-06-19 13:21:46 +00:00
Maurice
68a3036909
server/data is for runtime state (SQLite, backups, logs, tmp) — the airports snapshot is a shipped dataset, not user data, and it being in there forced us to poke a hole in both .dockerignore and .gitignore. Move it to server/assets/ and drop the exceptions; service and build script point at the new path.
109 lines
3.4 KiB
JavaScript
109 lines
3.4 KiB
JavaScript
#!/usr/bin/env node
|
|
// Build server/assets/airports.json from OurAirports (davidmegginson.github.io/ourairports-data).
|
|
// License: Public Domain. Keeps large/medium airports with an IATA code; timezone derived from coords via tz-lookup.
|
|
|
|
import fs from 'node:fs'
|
|
import path from 'node:path'
|
|
import https from 'node:https'
|
|
import { fileURLToPath } from 'node:url'
|
|
import tzLookup from 'tz-lookup'
|
|
|
|
const __dirname = path.dirname(fileURLToPath(import.meta.url))
|
|
const OUT = path.join(__dirname, '..', 'assets', 'airports.json')
|
|
const SRC = 'https://davidmegginson.github.io/ourairports-data/airports.csv'
|
|
|
|
function fetchText(url) {
|
|
return new Promise((resolve, reject) => {
|
|
https.get(url, (res) => {
|
|
if (res.statusCode !== 200) return reject(new Error(`HTTP ${res.statusCode}`))
|
|
let data = ''
|
|
res.setEncoding('utf8')
|
|
res.on('data', chunk => { data += chunk })
|
|
res.on('end', () => resolve(data))
|
|
}).on('error', reject)
|
|
})
|
|
}
|
|
|
|
function parseCsv(text) {
|
|
const rows = []
|
|
let row = []
|
|
let cur = ''
|
|
let inQuotes = false
|
|
for (let i = 0; i < text.length; i++) {
|
|
const ch = text[i]
|
|
if (inQuotes) {
|
|
if (ch === '"') {
|
|
if (text[i + 1] === '"') { cur += '"'; i++ } else { inQuotes = false }
|
|
} else {
|
|
cur += ch
|
|
}
|
|
} else {
|
|
if (ch === '"') inQuotes = true
|
|
else if (ch === ',') { row.push(cur); cur = '' }
|
|
else if (ch === '\n') { row.push(cur); rows.push(row); row = []; cur = '' }
|
|
else if (ch === '\r') { /* skip */ }
|
|
else cur += ch
|
|
}
|
|
}
|
|
if (cur.length > 0 || row.length > 0) { row.push(cur); rows.push(row) }
|
|
return rows
|
|
}
|
|
|
|
const raw = await fetchText(SRC)
|
|
const rows = parseCsv(raw)
|
|
const header = rows[0]
|
|
const idx = (name) => header.indexOf(name)
|
|
const TYPE = idx('type')
|
|
const NAME = idx('name')
|
|
const LAT = idx('latitude_deg')
|
|
const LNG = idx('longitude_deg')
|
|
const COUNTRY = idx('iso_country')
|
|
const MUNICIPALITY = idx('municipality')
|
|
const SERVICE = idx('scheduled_service')
|
|
const ICAO = idx('icao_code')
|
|
const IATA = idx('iata_code')
|
|
|
|
const KEEP = new Set(['large_airport', 'medium_airport'])
|
|
const airports = []
|
|
let skippedNoTz = 0
|
|
|
|
for (let i = 1; i < rows.length; i++) {
|
|
const r = rows[i]
|
|
if (!r || r.length < header.length) continue
|
|
if (!KEEP.has(r[TYPE])) continue
|
|
const iata = r[IATA]?.trim().toUpperCase()
|
|
if (!iata || iata.length !== 3) continue
|
|
if (r[SERVICE] !== 'yes') continue
|
|
const lat = Number(r[LAT])
|
|
const lng = Number(r[LNG])
|
|
if (!Number.isFinite(lat) || !Number.isFinite(lng)) continue
|
|
|
|
let tz = null
|
|
try { tz = tzLookup(lat, lng) } catch { skippedNoTz++; continue }
|
|
if (!tz) { skippedNoTz++; continue }
|
|
|
|
airports.push({
|
|
iata,
|
|
icao: r[ICAO]?.trim().toUpperCase() || null,
|
|
name: r[NAME],
|
|
city: r[MUNICIPALITY] || '',
|
|
country: r[COUNTRY] || '',
|
|
lat: Math.round(lat * 1e6) / 1e6,
|
|
lng: Math.round(lng * 1e6) / 1e6,
|
|
tz,
|
|
})
|
|
}
|
|
|
|
const seen = new Map()
|
|
for (const a of airports) {
|
|
const existing = seen.get(a.iata)
|
|
if (!existing) { seen.set(a.iata, a); continue }
|
|
if (existing.icao && !a.icao) continue
|
|
if (!existing.icao && a.icao) seen.set(a.iata, a)
|
|
}
|
|
const unique = Array.from(seen.values()).sort((a, b) => a.iata.localeCompare(b.iata))
|
|
|
|
fs.writeFileSync(OUT, JSON.stringify(unique))
|
|
const size = fs.statSync(OUT).size
|
|
console.log(`Wrote ${unique.length} airports to ${OUT} (${(size / 1024).toFixed(1)} KB); skipped ${skippedNoTz} without timezone`)
|