feat: admin frontend - React + Vite, auth pages, user management, roles, permissions, webhooks, devices, logs

frontend/admin/src/lib/auth/oauth.ts

@@ -0,0 +1,27 @@
+export function sanitizeAuthRedirect(target: string | null | undefined, fallback: string = '/dashboard'): string {
+  const value = (target || '').trim()
+  if (!value.startsWith('/') || value.startsWith('//')) {
+    return fallback
+  }
+  return value
+}
+
+export function buildOAuthCallbackReturnTo(redirectPath: string): string {
+  const callbackUrl = new URL('/login/oauth/callback', window.location.origin)
+  if (redirectPath && redirectPath !== '/dashboard') {
+    callbackUrl.searchParams.set('redirect', redirectPath)
+  }
+  return callbackUrl.toString()
+}
+
+export function parseOAuthCallbackHash(hash: string): Record<string, string> {
+  const normalized = hash.startsWith('#') ? hash.slice(1) : hash
+  const values = new URLSearchParams(normalized)
+
+  return {
+    status: values.get('status') || '',
+    code: values.get('code') || '',
+    provider: values.get('provider') || '',
+    message: values.get('message') || '',
+  }
+}