56 lines
1.5 KiB
TypeScript
56 lines
1.5 KiB
TypeScript
import { Cron } from 'croner'
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import pkg from '../package.json'
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function getEnv(key: string, fallback: string, parse?: undefined, validator?: (s: string) => boolean): string
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function getEnv<T>(key: string, fallback: T, parse: (value: string) => T, validator?: (T: string) => boolean): T
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function getEnv<T>(
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key: string,
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fallback: T,
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parse?: (value: string) => T,
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validator?: (s: string | T) => boolean
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): T | string {
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const value = process.env[key]
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const parsed = value === undefined ? fallback : parse ? parse(value) : value
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if (validator && !validator(parsed)) {
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console.error(`Invalid or missing value for ${key}: ${value}`)
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process.exit(1)
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}
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return parsed
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}
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function parseBoolean(value: string): boolean {
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value = value.toLowerCase()
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const truthy = ['true', 'yes', '1', 'y']
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return truthy.includes(value)
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}
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function isPresent(s: string): boolean {
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return s.length > 0
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}
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export const Config = {
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version: pkg.version,
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logging: {
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level: getEnv('LOG_LEVEL', 'info'),
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},
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auth: {
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token: getEnv('TOKEN', '', undefined, isPresent),
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},
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dns: {
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zone: getEnv('ZONE', '', undefined, isPresent),
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record: getEnv('DNS_RECORD', '', undefined, isPresent),
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proxied: getEnv('PROXIED', false, parseBoolean),
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},
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runner: {
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cron: getEnv('CRON', '*/5 * * * *', undefined, (s) => {
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try {
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new Cron(s)
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return true
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} catch {
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return false
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}
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}),
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resolver: getEnv('RESOLVER', 'https://api.ipify.org'),
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},
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}
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