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import { useState } from "react";
import { ImagePlus, LoaderCircle, Send, X } from "lucide-react";
import { Button } from "@/components/ui/button";
import { Input } from "@/components/ui/input";
import { Label } from "@/components/ui/label";
import { Select, SelectContent, SelectItem, SelectTrigger, SelectValue } from "@/components/ui/select";
import { Textarea } from "@/components/ui/textarea";
import { httpRequest } from "@/lib/request";
import { pretty, type ChatCompletionResponse, type ChatContentPart, type ChatMessage } from "./types";
type SelectedImage = {
id: string;
name: string;
size: number;
url: string;
};
const MAX_IMAGE_BYTES = 10 * 1024 * 1024;
function readImage(file: File): Promise<SelectedImage> {
return new Promise((resolve, reject) => {
if (!file.type.startsWith("image/")) {
reject(new Error(`${file.name} 不是图片文件`));
return;
}
if (file.size > MAX_IMAGE_BYTES) {
reject(new Error(`${file.name} 超过 10MB`));
return;
}
const reader = new FileReader();
reader.onload = () => {
const url = String(reader.result || "");
if (!url.startsWith("data:image/")) {
reject(new Error(`${file.name} 读取失败`));
return;
}
resolve({
id: `${file.name}-${file.size}-${file.lastModified}-${Math.random().toString(16).slice(2)}`,
name: file.name,
size: file.size,
url,
});
};
reader.onerror = () => reject(reader.error || new Error(`${file.name} 读取失败`));
reader.readAsDataURL(file);
});
}
function messageText(message: ChatMessage): string {
if (typeof message.content === "string") {
return message.content;
}
return message.content
.filter((part): part is { type: "text"; text: string } => part.type === "text")
.map((part) => part.text)
.join("");
}
function messageImages(message: ChatMessage): string[] {
if (!Array.isArray(message.content)) {
return [];
}
return message.content
.filter((part): part is { type: "image_url"; image_url: { url: string } } => part.type === "image_url")
.map((part) => part.image_url.url);
}
export function ChatPanel() {
const [model, setModel] = useState("auto");
const [reasoningEffort, setReasoningEffort] = useState("");
const [input, setInput] = useState("你好，先记住我的项目叫 chatgpt2api。");
const [selectedImages, setSelectedImages] = useState<SelectedImage[]>([]);
const [messages, setMessages] = useState<ChatMessage[]>([]);
const [raw, setRaw] = useState<ChatCompletionResponse | null>(null);
const [loading, setLoading] = useState(false);
const [error, setError] = useState("");
const handleImagesChange = async (files: FileList | null) => {
if (!files?.length) return;
setError("");
try {
const images = await Promise.all(Array.from(files).map(readImage));
setSelectedImages((current) => [...current, ...images].slice(0, 4));
} catch (err) {
setError(err instanceof Error ? err.message : String(err));
}
};
const sendChat = async () => {
const text = input.trim();
if (!text && !selectedImages.length) return;
const content: string | ChatContentPart[] = selectedImages.length
? [
...(text ? [{ type: "text" as const, text }] : []),
...selectedImages.map((image) => ({ type: "image_url" as const, image_url: { url: image.url } })),
]
: text;
const nextMessages: ChatMessage[] = [...messages, { role: "user", content }];
setMessages(nextMessages);
setInput("");
setSelectedImages([]);
setLoading(true);
setError("");
try {
const body = {
model: model.trim() || "auto",
messages: nextMessages,
...(reasoningEffort ? { reasoning_effort: reasoningEffort } : {}),
};
const result = await httpRequest<ChatCompletionResponse>("/v1/chat/completions", { method: "POST", body });
setRaw(result);
setMessages([...nextMessages, { role: "assistant", content: String(result.choices?.[0]?.message?.content || "") }]);
} catch (err) {
setError(err instanceof Error ? err.message : String(err));
} finally {
setLoading(false);
}
};
const clearChat = () => {
setMessages([]);
setSelectedImages([]);
setRaw(null);
setError("");
};
return (
<div className="grid h-full min-h-0 gap-8 lg:grid-cols-[360px_minmax(0,1fr)]">
<section className="flex min-h-0 flex-col lg:border-r lg:border-stone-200/70 lg:pr-8 dark:lg:border-white/10">
<div className="border-b border-stone-200/70 pb-3 dark:border-white/10">
<h2 className="text-sm font-medium text-stone-500 dark:text-stone-400">请求</h2>
</div>
<div className="min-h-0 flex-1 space-y-4 overflow-auto pt-4">
<div className="grid gap-3 sm:grid-cols-[minmax(0,1fr)_160px]">
<div className="space-y-2">
<Label htmlFor="chat-model">Model</Label>
<Input id="chat-model" value={model} onChange={(event) => setModel(event.target.value)} className="rounded-md border-stone-200/70 bg-transparent shadow-none dark:border-white/10" />
</div>
<div className="space-y-2">
<Label htmlFor="chat-reasoning-effort">思考强度</Label>
<Select value={reasoningEffort || "default"} onValueChange={(value) => setReasoningEffort(value === "default" ? "" : value)}>
<SelectTrigger id="chat-reasoning-effort" className="h-10 rounded-md border-stone-200/70 bg-transparent shadow-none dark:border-white/10">
<SelectValue />
</SelectTrigger>
<SelectContent>
<SelectItem value="default">默认</SelectItem>
<SelectItem value="low">低</SelectItem>
<SelectItem value="medium">中</SelectItem>
<SelectItem value="high">高</SelectItem>
<SelectItem value="xhigh">超高</SelectItem>
</SelectContent>
</Select>
</div>
</div>
<div className="space-y-2">
<Label htmlFor="chat-input">Message</Label>
<Textarea id="chat-input" value={input} onChange={(event) => setInput(event.target.value)} className="min-h-32 rounded-md border-stone-200/70 bg-transparent shadow-none dark:border-white/10" />
</div>
<div className="space-y-2">
<Label htmlFor="chat-images">图片</Label>
<label htmlFor="chat-images" className="flex cursor-pointer items-center justify-center gap-2 rounded-md border border-dashed border-stone-300 bg-stone-50/70 px-3 py-3 text-sm text-stone-600 transition hover:border-stone-400 hover:bg-stone-100 dark:border-white/10 dark:bg-white/[0.03] dark:text-stone-300 dark:hover:bg-white/[0.06]">
<ImagePlus className="size-4" />
选择图片
</label>
<input id="chat-images" type="file" accept="image/png,image/jpeg,image/webp,image/gif" multiple className="sr-only" onChange={(event) => {
void handleImagesChange(event.target.files);
event.currentTarget.value = "";
}} />
{selectedImages.length ? (
<div className="grid grid-cols-2 gap-2">
{selectedImages.map((image) => (
<div key={image.id} className="group relative overflow-hidden rounded-md border border-stone-200 bg-white dark:border-white/10 dark:bg-white/[0.04]">
<img src={image.url} alt={image.name} className="aspect-square w-full object-cover" />
<button type="button" aria-label={`移除 ${image.name}`} onClick={() => setSelectedImages((current) => current.filter((item) => item.id !== image.id))} className="absolute top-1 right-1 flex size-7 items-center justify-center rounded-md bg-white/90 text-stone-700 shadow-sm transition hover:bg-white dark:bg-stone-950/90 dark:text-stone-100">
<X className="size-4" />
</button>
<div className="absolute inset-x-0 bottom-0 truncate bg-white/90 px-2 py-1 text-xs text-stone-600 dark:bg-stone-950/90 dark:text-stone-300">{image.name}</div>
</div>
))}
</div>
) : null}
</div>
<div className="flex gap-2">
<Button size="sm" onClick={() => void sendChat()} disabled={loading || (!input.trim() && !selectedImages.length)}>
{loading ? <LoaderCircle className="animate-spin" /> : <Send />}
发送
</Button>
<Button size="sm" variant="outline" onClick={clearChat}>
清空
</Button>
</div>
{error ? <div className="rounded-md border border-rose-200 bg-rose-50/60 px-3 py-2 text-sm text-rose-700 dark:border-rose-900/60 dark:bg-rose-950/20 dark:text-rose-300">{error}</div> : null}
<Textarea value={raw ? pretty(raw) : "{\n \"messages\": []\n}"} readOnly className="min-h-72 resize-none rounded-md border-stone-200/70 bg-stone-50/50 p-4 font-mono text-xs leading-5 text-stone-600 shadow-none dark:border-white/10 dark:bg-white/[0.03] dark:text-stone-300" />
</div>
</section>
<section className="flex min-h-0 flex-col">
<div className="border-b border-stone-200/70 pb-3 dark:border-white/10">
<h2 className="text-sm font-medium text-stone-500 dark:text-stone-400">对话</h2>
</div>
<div className="min-h-0 flex-1 space-y-4 overflow-auto pt-4">
{messages.length ? messages.map((message, index) => (
<div key={`${message.role}-${index}`} className="space-y-1.5 text-sm">
<div className="text-xs font-medium uppercase tracking-wide text-stone-400 dark:text-stone-500">{message.role}</div>
{messageImages(message).length ? (
<div className="flex flex-wrap gap-2">
{messageImages(message).map((url, imageIndex) => (
<img key={`${index}-${imageIndex}`} src={url} alt="" className="h-28 w-28 rounded-md border border-stone-200 object-cover dark:border-white/10" />
))}
</div>
) : null}
{messageText(message) ? <div className="whitespace-pre-wrap leading-7 text-stone-700 dark:text-stone-300">{messageText(message)}</div> : null}
</div>
)) : (
<div className="flex h-full items-center justify-center text-sm text-stone-400 dark:text-stone-500">暂无对话消息</div>
)}
</div>
</section>
</div>
);
}
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