[flight-booking-app] Add loading and error UI, add sleep and approval tools #24
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,12 @@ | ||
| import { bookingApprovalHook } from '@/workflows/chat/hooks/approval'; | ||
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| export async function POST(request: Request) { | ||
| const { toolCallId, approved, comment } = await request.json(); | ||
| // Schema validation happens automatically | ||
| // Can throw a zod schema validation error, or a | ||
| await bookingApprovalHook.resume(toolCallId, { | ||
| approved, | ||
| comment, | ||
| }); | ||
| return Response.json({ success: true }); | ||
| } | ||
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Collaborator
There was a problem hiding this comment. we should just use seems simpler imo only use |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,109 @@ | ||
| 'use client'; | ||
| import { useState } from 'react'; | ||
| interface BookingApprovalProps { | ||
| toolCallId: string; | ||
| input?: { | ||
| flightNumber: string; | ||
| passengerName: string; | ||
| price: number; | ||
| }; | ||
| output?: string; | ||
| } | ||
| export function BookingApproval({ | ||
| toolCallId, | ||
| input, | ||
| output, | ||
| }: BookingApprovalProps) { | ||
| const [comment, setComment] = useState(''); | ||
| const [isSubmitting, setIsSubmitting] = useState(false); | ||
| const [error, setError] = useState<string | null>(null); | ||
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| // If we have output, the approval has been processed | ||
| if (output) { | ||
| try { | ||
| const json = JSON.parse(output) as { output: { value: string } }; | ||
| return ( | ||
| <div className="border rounded-lg p-4"> | ||
| <p className="text-sm text-muted-foreground">{json.output.value}</p> | ||
| </div> | ||
| ); | ||
| } catch (error) { | ||
| return ( | ||
| <div className="border rounded-lg p-4"> | ||
| <p className="text-sm text-muted-foreground"> | ||
| Error parsing approval result: {(error as Error).message} | ||
| </p> | ||
| </div> | ||
| ); | ||
| } | ||
| } | ||
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| const handleSubmit = async (approved: boolean) => { | ||
| setIsSubmitting(true); | ||
| setError(null); | ||
| try { | ||
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|
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| const response = await fetch('/api/hooks/approval', { | ||
| method: 'POST', | ||
| headers: { 'Content-Type': 'application/json' }, | ||
| body: JSON.stringify({ toolCallId, approved, comment }), | ||
| }); | ||
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| if (!response.ok) { | ||
| const errorData = await response.text(); | ||
| throw new Error(`API error: ${response.status} - ${errorData || response.statusText}`); | ||
| } | ||
| } catch (err) { | ||
| const errorMessage = err instanceof Error ? err.message : 'Failed to submit approval'; | ||
| setError(errorMessage); | ||
| setIsSubmitting(false); | ||
| return; | ||
| } | ||
| setIsSubmitting(false); | ||
| }; | ||
| return ( | ||
| <div className="border rounded-lg p-4 space-y-4"> | ||
| {error && ( | ||
| <div className="border border-red-300 rounded bg-red-50 p-3"> | ||
| <p className="text-sm text-red-700">{error}</p> | ||
| </div> | ||
| )} | ||
| <div className="space-y-2"> | ||
| <p className="font-medium">Approve this booking?</p> | ||
| <div className="text-sm text-muted-foreground"> | ||
| {input && ( | ||
| <> | ||
| <div>Flight: {input.flightNumber}</div> | ||
| <div>Passenger: {input.passengerName}</div> | ||
| <div>Price: ${input.price}</div> | ||
| </> | ||
| )} | ||
| </div> | ||
| </div> | ||
| <textarea | ||
| value={comment} | ||
| onChange={(e) => setComment(e.target.value)} | ||
| placeholder="Add a comment (optional)..." | ||
| className="w-full border rounded p-2 text-sm" | ||
| rows={2} | ||
| /> | ||
| <div className="flex gap-2"> | ||
| <button | ||
| type="button" | ||
| onClick={() => handleSubmit(true)} | ||
| disabled={isSubmitting} | ||
| className="px-4 py-2 bg-green-600 text-white rounded hover:bg-green-700 disabled:opacity-50" | ||
| > | ||
| {isSubmitting ? 'Submitting...' : 'Approve'} | ||
| </button> | ||
| <button | ||
| type="button" | ||
| onClick={() => handleSubmit(false)} | ||
| disabled={isSubmitting} | ||
| className="px-4 py-2 bg-red-600 text-white rounded hover:bg-red-700 disabled:opacity-50" | ||
| > | ||
| {isSubmitting ? 'Submitting...' : 'Reject'} | ||
| </button> | ||
| </div> | ||
| </div> | ||
| ); | ||
| } | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,9 @@ | ||
| import { defineHook } from 'workflow'; | ||
| import { z } from 'zod'; | ||
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| export const bookingApprovalHook = defineHook({ | ||
|
Collaborator
There was a problem hiding this comment. same comment re: using webhook instead :)
Collaborator
There was a problem hiding this comment. webhook should support zod schemas too with validation |
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| schema: z.object({ | ||
| approved: z.boolean(), | ||
| comment: z.string().optional(), | ||
| }), | ||
| }); | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,5 +1,6 @@ | ||
| import { FatalError, sleep } from 'workflow'; | ||
| import { z } from 'zod'; | ||
| import { bookingApprovalHook } from '../hooks/approval'; | ||
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| export const mockAirports: Record< | ||
| string, | ||
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@@ -288,6 +289,31 @@ export async function checkBaggageAllowance({ | |
| }; | ||
| } | ||
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| async function executeSleep({ durationMs }: { durationMs: number }) { | ||
| // Note: No "use step" here - sleep is a workflow-level function | ||
| await sleep(durationMs); | ||
| return { message: `Slept for ${durationMs}ms` }; | ||
| } | ||
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| async function executeBookingApproval( | ||
| { | ||
| flightNumber, | ||
| passengerName, | ||
| price, | ||
| }: { flightNumber: string; passengerName: string; price: number }, | ||
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|
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| { toolCallId }: { toolCallId: string } | ||
| ) { | ||
| // Note: No "use step" here - hooks are workflow-level primitives | ||
| // Use the toolCallId as the hook token so the UI can reference it | ||
| const hook = bookingApprovalHook.create({ token: toolCallId }); | ||
| // Workflow pauses here until the hook is resolved | ||
| const { approved, comment } = await hook; | ||
| if (!approved) { | ||
| return `Booking rejected: ${comment || 'No reason provided'}`; | ||
| } | ||
| return `Booking approved for ${passengerName} on flight ${flightNumber} (Price: ${price})${comment ? ` - Note: ${comment}` : ''}`; | ||
| } | ||
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| // Tool definitions | ||
| export const flightBookingTools = { | ||
| searchFlights: { | ||
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@@ -337,6 +363,22 @@ export const flightBookingTools = { | |
| }), | ||
| execute: checkBaggageAllowance, | ||
| }, | ||
| sleep: { | ||
| description: 'Pause execution for a specified duration', | ||
| inputSchema: z.object({ | ||
| durationMs: z.number().describe('Duration to sleep in milliseconds'), | ||
| }), | ||
| execute: executeSleep, | ||
| }, | ||
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Comment on lines
+366
to
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Collaborator
There was a problem hiding this comment. for future, we should really ship |
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| bookingApproval: { | ||
| description: 'Request human approval before booking a flight', | ||
| inputSchema: z.object({ | ||
| flightNumber: z.string().describe('Flight number to book'), | ||
| passengerName: z.string().describe('Name of the passenger'), | ||
| price: z.number().describe('Total price of the booking'), | ||
| }), | ||
| execute: executeBookingApproval, | ||
| }, | ||
| }; | ||
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| // System prompt | ||
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