A prompt field for AI chat in a soft shell. Images attach as pills that open large inside the field, tasks in flight show progress above it, and send turns into stop while a reply is busy.
"use client"
import { useEffect, useRef, useState } from "react"
import {
PromptBox,
PromptBoxAction,
type PromptBoxAttachment,
type PromptBoxMessage,
} from "@/components/ui/prompt-box"
const settings = {
placeholder: "Ask anything, or drop images…",
model: "Opus 5.5",
mode: "Auto",
uploads: true,
replyMs: 2600,
minRows: 2,
maxRows: 8,
maxAttachments: 6,
}
// Inline SVG landscapes, so the preview needs no network images.
function scene(
sky: [string, string],
sun: string,
hills: [string, string, string],
width = 1200,
height = 800
) {
const ridge = (base: number, amp: number, seed: number) => {
let d = `M0 ${height}L0 ${base}`
for (let x = 0; x <= width; x += width / 12) {
const y = base - amp * (0.5 + 0.5 * Math.sin(x / 140 + seed) * Math.cos(x / 310 + seed * 2))
d += `L${x.toFixed(0)} ${y.toFixed(0)}`
}
return `${d}L${width} ${height}Z`
}
const svg = `<svg xmlns="http://www.w3.org/2000/svg" width="${width}" height="${height}" viewBox="0 0 ${width} ${height}">
<defs><linearGradient id="s" x1="0" y1="0" x2="0" y2="1"><stop offset="0" stop-color="${sky[0]}"/><stop offset="1" stop-color="${sky[1]}"/></linearGradient>
<radialGradient id="g"><stop offset="0" stop-color="${sun}" stop-opacity=".9"/><stop offset="1" stop-color="${sun}" stop-opacity="0"/></radialGradient></defs>
<rect width="${width}" height="${height}" fill="url(#s)"/>
<circle cx="${width * 0.68}" cy="${height * 0.36}" r="${height * 0.34}" fill="url(#g)"/>
<circle cx="${width * 0.68}" cy="${height * 0.36}" r="${height * 0.08}" fill="${sun}"/>
<path d="${ridge(height * 0.58, height * 0.22, 1)}" fill="${hills[0]}"/>
<path d="${ridge(height * 0.72, height * 0.16, 4)}" fill="${hills[1]}"/>
<path d="${ridge(height * 0.86, height * 0.12, 7)}" fill="${hills[2]}"/>
</svg>`
return `data:image/svg+xml;charset=utf-8,${encodeURIComponent(svg)}`
}
const SAMPLES: PromptBoxAttachment[] = [
{
id: "sample-1",
name: "highlands.svg",
url: scene(["#F6C38B", "#FBE7C6"], "#FFF4D6", ["#7A8F6B", "#4E6650", "#2C4236"]),
},
{
id: "sample-2",
name: "dusk.svg",
// A portrait crop, so the island shows how it follows the image's shape.
url: scene(["#2B2F6B", "#E07A6B"], "#FFD3A1", ["#6B4E7A", "#4A3560", "#2A1D3F"], 600, 800),
},
]
export default function PromptBoxDemo(props: Partial<typeof settings>) {
const s = { ...settings, ...props }
const [replying, setReplying] = useState(false)
const [files, setFiles] = useState<PromptBoxAttachment[]>([])
const [sent, setSent] = useState<PromptBoxMessage | null>(null)
const known = useRef(new Set(SAMPLES.map((file) => file.id)))
const loadSamples = (uploads: boolean) => {
for (const file of SAMPLES) known.current.add(file.id)
setFiles(
SAMPLES.map((file) => (uploads ? { ...file, progress: 0 } : file))
)
}
// Start with the samples attached; reload them when upload progress flips.
useEffect(() => {
loadSamples(s.uploads)
}, [s.uploads])
// A sent message keeps the prompt busy for a moment, like a reply.
useEffect(() => {
if (!replying) return
const id = window.setTimeout(() => setReplying(false), s.replyMs)
return () => window.clearTimeout(id)
}, [replying, s.replyMs])
// Uploads tick up, then become ready.
useEffect(() => {
if (!files.some((file) => file.progress !== undefined)) return
const id = window.setTimeout(() => {
setFiles((list) =>
list.map((file) => {
if (file.progress === undefined) return file
const progress = file.progress + 0.06 + Math.random() * 0.12
return { ...file, progress: progress >= 1 ? undefined : progress }
})
)
}, 160)
return () => window.clearTimeout(id)
}, [files])
const onAttachmentsChange = (next: PromptBoxAttachment[]) => {
setFiles(
next.map((file) => {
if (known.current.has(file.id)) return file
known.current.add(file.id)
return s.uploads ? { ...file, progress: 0 } : file
})
)
}
const onSubmit = (message: PromptBoxMessage) => {
setSent(message)
setFiles([])
setReplying(true)
}
return (
<div className="flex min-h-[520px] w-full flex-col items-center justify-end gap-6 bg-background px-4 py-8 sm:px-10 sm:py-10">
{sent ? (
<div className="flex w-full max-w-2xl flex-col items-end gap-2">
{sent.attachments.length > 0 ? (
<div className="flex gap-1.5">
{sent.attachments.map((file) => (
<img
key={file.id}
src={file.url}
alt={file.name}
className="size-16 rounded-xl object-cover ring-1 ring-foreground/10"
/>
))}
</div>
) : null}
{sent.text ? (
<p className="max-w-[80%] whitespace-pre-wrap rounded-2xl rounded-br-md bg-muted px-4 py-2.5 text-[15px] leading-6 text-foreground">
{sent.text}
</p>
) : null}
</div>
) : null}
<PromptBox
className="max-w-2xl"
placeholder={s.placeholder}
attachments={files}
onAttachmentsChange={onAttachmentsChange}
maxAttachments={s.maxAttachments}
minRows={s.minRows}
maxRows={s.maxRows}
busy={replying}
onStop={() => setReplying(false)}
onSubmit={onSubmit}
toolbar={
<>
<PromptBoxAction>{s.mode}</PromptBoxAction>
<PromptBoxAction className="ms-auto hidden sm:inline-flex">
{s.model}
<svg
viewBox="0 0 16 16"
className="size-3.5 opacity-60"
fill="none"
aria-hidden
>
<path
d="m4.5 6.5 3.5 3.5 3.5-3.5"
stroke="currentColor"
strokeWidth="1.6"
strokeLinecap="round"
strokeLinejoin="round"
/>
</svg>
</PromptBoxAction>
</>
}
/>
{files.length === 0 ? (
<button
type="button"
onClick={() => loadSamples(s.uploads)}
className="-mt-3 text-xs text-muted-foreground underline-offset-4 transition-colors hover:text-foreground hover:underline"
>
Attach sample images
</button>
) : null}
</div>
)
}