feat: switch to config file system

app/utils/context/parser.ts

@@ -0,0 +1,78 @@
+import { type } from 'arktype';
+import log from '~/utils/log';
+
+// TODO: ALLOW HEADSCALE CONFIG TO OVERRIDE HEADPLANE CONFIG MAYBE FOR OIDC?
+export type HeadplaneConfig = typeof headplaneConfig.infer;
+
+const stringToBool = type('string | boolean').pipe((v) => Boolean(v));
+const serverConfig = type({
+	host: 'string.ip',
+	port: type('string | number.integer').pipe((v) => Number(v)),
+	cookie_secret: '32 <= string <= 32',
+	cookie_secure: stringToBool,
+});
+
+const oidcConfig = type({
+	issuer: 'string.url',
+	client_id: 'string',
+	client_secret: 'string',
+	token_endpoint_auth_method:
+		'"client_secret_basic" | "client_secret_post" | "client_secret_jwt"',
+	redirect_uri: 'string.url?',
+	disable_api_key_login: stringToBool,
+	headscale_api_key: 'string',
+	strict_validation: stringToBool.default(true),
+}).onDeepUndeclaredKey('reject');
+
+const headscaleConfig = type({
+	url: 'string.url',
+	public_url: 'string.url?',
+	config_path: 'string?',
+	config_strict: stringToBool,
+}).onDeepUndeclaredKey('reject');
+
+const headplaneConfig = type({
+	debug: stringToBool,
+	server: serverConfig,
+	'oidc?': oidcConfig,
+	headscale: headscaleConfig,
+}).onDeepUndeclaredKey('reject');
+
+const partialHeadplaneConfig = type({
+	debug: stringToBool,
+	server: serverConfig.partial(),
+	'oidc?': oidcConfig.partial(),
+	headscale: headscaleConfig.partial(),
+}).partial();
+
+export function validateConfig(config: unknown) {
+	log.debug('CFGX', 'Validating Headplane configuration...');
+	const out = headplaneConfig(config);
+	if (out instanceof type.errors) {
+		log.error('CFGX', 'Error parsing Headplane configuration:');
+		for (const [number, error] of out.entries()) {
+			log.error('CFGX', ` (${number}): ${error.toString()}`);
+		}
+
+		return;
+	}
+
+	log.debug('CFGX', 'Headplane configuration is valid.');
+	return out;
+}
+
+export function coalesceConfig(config: unknown) {
+	log.debug('CFGX', 'Validating coalescing vars for configuration...');
+	const out = partialHeadplaneConfig(config);
+	if (out instanceof type.errors) {
+		log.error('CFGX', 'Error parsing variables:');
+		for (const [number, error] of out.entries()) {
+			log.error('CFGX', ` (${number}): ${error.toString()}`);
+		}
+
+		return;
+	}
+
+	log.debug('CFGX', 'Coalescing variables is valid.');
+	return out;
+}