fix(inference-billing): fix inference billing when stream is true via API, add drag-and-drop functionality to deployed chat (#1606)

* fix(inference): fix inference billing when stream is true via API

* add drag-and-drop to deployed chat

apps/sim/app/api/workflows/[id]/execute/route.ts

@@ -123,8 +123,9 @@ export async function executeWorkflow(
     workflowTriggerType?: 'api' | 'chat' // Which trigger block type to look for (default: 'api')
     onStream?: (streamingExec: any) => Promise<void> // Callback for streaming agent responses
     onBlockComplete?: (blockId: string, output: any) => Promise<void> // Callback when any block completes
+    skipLoggingComplete?: boolean // When true, skip calling loggingSession.safeComplete (for streaming)
   }
-): Promise<any> {
+): Promise<ExecutionResult> {
   const workflowId = workflow.id
   const executionId = uuidv4()
 
@@ -378,13 +379,20 @@ export async function executeWorkflow(
         .where(eq(userStats.userId, actorUserId))
     }
 
-    await loggingSession.safeComplete({
-      endedAt: new Date().toISOString(),
-      totalDurationMs: totalDuration || 0,
-      finalOutput: result.output || {},
-      traceSpans: (traceSpans || []) as any,
-      workflowInput: processedInput,
-    })
+    if (!streamConfig?.skipLoggingComplete) {
+      await loggingSession.safeComplete({
+        endedAt: new Date().toISOString(),
+        totalDurationMs: totalDuration || 0,
+        finalOutput: result.output || {},
+        traceSpans: traceSpans || [],
+        workflowInput: processedInput,
+      })
+    } else {
+      result._streamingMetadata = {
+        loggingSession,
+        processedInput,
+      }
+    }
 
     return result
   } catch (error: any) {

apps/sim/app/chat/components/input/input.tsx

@@ -35,6 +35,8 @@ export const ChatInput: React.FC<{
   const [inputValue, setInputValue] = useState('')
   const [attachedFiles, setAttachedFiles] = useState<AttachedFile[]>([])
   const [uploadErrors, setUploadErrors] = useState<string[]>([])
+  const [dragCounter, setDragCounter] = useState(0)
+  const isDragOver = dragCounter > 0
 
   // Check if speech-to-text is available in the browser
   const isSttAvailable =
@@ -234,11 +236,42 @@ export const ChatInput: React.FC<{
 
           {/* Text Input Area with Controls */}
           <motion.div
-            className='rounded-2xl border border-gray-200 bg-white shadow-sm md:rounded-3xl'
+            className={`rounded-2xl border shadow-sm transition-all duration-200 md:rounded-3xl ${
+              isDragOver
+                ? 'border-purple-500 bg-purple-50/50 dark:border-purple-500 dark:bg-purple-950/20'
+                : 'border-gray-200 bg-white'
+            }`}
             onClick={handleActivate}
             initial={{ opacity: 0, y: 10 }}
             animate={{ opacity: 1, y: 0 }}
             transition={{ duration: 0.2 }}
+            onDragEnter={(e) => {
+              e.preventDefault()
+              e.stopPropagation()
+              if (!isStreaming) {
+                setDragCounter((prev) => prev + 1)
+              }
+            }}
+            onDragOver={(e) => {
+              e.preventDefault()
+              e.stopPropagation()
+              if (!isStreaming) {
+                e.dataTransfer.dropEffect = 'copy'
+              }
+            }}
+            onDragLeave={(e) => {
+              e.preventDefault()
+              e.stopPropagation()
+              setDragCounter((prev) => Math.max(0, prev - 1))
+            }}
+            onDrop={(e) => {
+              e.preventDefault()
+              e.stopPropagation()
+              setDragCounter(0)
+              if (!isStreaming) {
+                handleFileSelect(e.dataTransfer.files)
+              }
+            }}
           >
             {/* File Previews */}
             {attachedFiles.length > 0 && (
@@ -341,7 +374,7 @@ export const ChatInput: React.FC<{
                   value={inputValue}
                   onChange={handleInputChange}
                   className='flex w-full resize-none items-center overflow-hidden bg-transparent text-base outline-none placeholder:text-gray-400 md:font-[330]'
-                  placeholder={isActive ? '' : ''}
+                  placeholder={isDragOver ? 'Drop files here...' : isActive ? '' : ''}
                   rows={1}
                   style={{
                     minHeight: window.innerWidth >= 768 ? '24px' : '28px',
@@ -366,14 +399,14 @@ export const ChatInput: React.FC<{
                         className='-translate-y-1/2 absolute top-1/2 left-0 transform select-none text-base text-gray-400 md:hidden'
                         style={{ paddingTop: '3px', paddingBottom: '3px' }}
                       >
-                        {PLACEHOLDER_MOBILE}
+                        {isDragOver ? 'Drop files here...' : PLACEHOLDER_MOBILE}
                       </div>
                       {/* Desktop placeholder */}
                       <div
                         className='-translate-y-1/2 absolute top-1/2 left-0 hidden transform select-none font-[330] text-base text-gray-400 md:block'
                         style={{ paddingTop: '4px', paddingBottom: '4px' }}
                       >
-                        {PLACEHOLDER_DESKTOP}
+                        {isDragOver ? 'Drop files here...' : PLACEHOLDER_DESKTOP}
                       </div>
                     </>
                   )}

apps/sim/executor/types.ts

@@ -186,6 +186,11 @@ export interface ExecutionResult {
   error?: string // Error message if execution failed
   logs?: BlockLog[] // Execution logs for all blocks
   metadata?: ExecutionMetadata
+  _streamingMetadata?: {
+    // Internal metadata for streaming execution
+    loggingSession: any
+    processedInput: any
+  }
 }
 
 /**

apps/sim/lib/workflows/streaming.ts

@@ -118,6 +118,7 @@ export async function createStreamingResponse(
           workflowTriggerType: streamConfig.workflowTriggerType,
           onStream: onStreamCallback,
           onBlockComplete: onBlockCompleteCallback,
+          skipLoggingComplete: true, // We'll complete logging after tokenization
         })
 
         if (result.logs && streamedContent.size > 0) {
@@ -135,6 +136,22 @@ export async function createStreamingResponse(
           processStreamingBlockLogs(result.logs, streamedContent)
         }
 
+        // Complete the logging session with updated trace spans that include cost data
+        if (result._streamingMetadata?.loggingSession) {
+          const { buildTraceSpans } = await import('@/lib/logs/execution/trace-spans/trace-spans')
+          const { traceSpans, totalDuration } = buildTraceSpans(result)
+
+          await result._streamingMetadata.loggingSession.safeComplete({
+            endedAt: new Date().toISOString(),
+            totalDurationMs: totalDuration || 0,
+            finalOutput: result.output || {},
+            traceSpans: (traceSpans || []) as any,
+            workflowInput: result._streamingMetadata.processedInput,
+          })
+
+          result._streamingMetadata = undefined
+        }
+
         // Create a minimal result with only selected outputs
         const minimalResult = {
           success: result.success,