chore: import upstream snapshot with attribution

apps/sim/app/api/v1/auth.ts

@@ -0,0 +1,61 @@
+import { createLogger } from '@sim/logger'
+import type { NextRequest } from 'next/server'
+import { authenticateApiKeyFromHeader, updateApiKeyLastUsed } from '@/lib/api-key/service'
+import { ANONYMOUS_USER_ID } from '@/lib/auth/constants'
+import { isAuthDisabled } from '@/lib/core/config/env-flags'
+
+const logger = createLogger('V1Auth')
+
+export interface AuthResult {
+  authenticated: boolean
+  userId?: string
+  workspaceId?: string
+  keyType?: 'personal' | 'workspace'
+  error?: string
+}
+
+export async function authenticateV1Request(request: NextRequest): Promise<AuthResult> {
+  if (isAuthDisabled) {
+    return {
+      authenticated: true,
+      userId: ANONYMOUS_USER_ID,
+      keyType: 'personal',
+    }
+  }
+
+  const apiKey = request.headers.get('x-api-key')
+
+  if (!apiKey) {
+    return {
+      authenticated: false,
+      error: 'API key required',
+    }
+  }
+
+  try {
+    const result = await authenticateApiKeyFromHeader(apiKey)
+
+    if (!result.success) {
+      logger.warn('Invalid API key attempted', { keyPrefix: apiKey.slice(0, 8) })
+      return {
+        authenticated: false,
+        error: result.error || 'Invalid API key',
+      }
+    }
+
+    await updateApiKeyLastUsed(result.keyId!)
+
+    return {
+      authenticated: true,
+      userId: result.userId!,
+      workspaceId: result.workspaceId,
+      keyType: result.keyType,
+    }
+  } catch (error) {
+    logger.error('API key authentication error', { error })
+    return {
+      authenticated: false,
+      error: 'Authentication failed',
+    }
+  }
+}