server for auth, more goodies

server/config.ts

@@ -0,0 +1,53 @@
+const DEFAULT_PORT = 5174
+const DEFAULT_SQLITE_PATH = './leo-typing.db'
+
+function parsePort(value: string | undefined): number {
+  if (!value) return DEFAULT_PORT
+
+  const port = Number.parseInt(value, 10)
+  if (Number.isNaN(port) || port < 1 || port > 65535) {
+    throw new Error(`Invalid PORT value: ${value}`)
+  }
+
+  return port
+}
+
+function parseBoolean(value: string | undefined, fallback: boolean): boolean {
+  if (!value) return fallback
+
+  switch (value.toLowerCase()) {
+    case '1':
+    case 'true':
+    case 'yes':
+    case 'on':
+      return true
+    case '0':
+    case 'false':
+    case 'no':
+    case 'off':
+      return false
+    default:
+      throw new Error(`Invalid boolean value: ${value}`)
+  }
+}
+
+const appOrigin = process.env.APP_ORIGIN ? new URL(process.env.APP_ORIGIN) : null
+
+export const runtimeConfig = {
+  host: process.env.HOST || '127.0.0.1',
+  port: parsePort(process.env.PORT),
+  sqlitePath: process.env.SQLITE_PATH || DEFAULT_SQLITE_PATH,
+  appOrigin,
+  sessionCookieSecure: parseBoolean(
+    process.env.SESSION_COOKIE_SECURE,
+    appOrigin?.protocol === 'https:',
+  ),
+}
+
+export function resolveOrigin(req: Request): string {
+  return runtimeConfig.appOrigin?.origin || new URL(req.url).origin
+}
+
+export function resolveRpId(req: Request): string {
+  return runtimeConfig.appOrigin?.hostname || new URL(req.url).hostname
+}