feat(attach): 附件可配置限额、流式落盘与分阶段上传
管理端可配类型/体积；上传改流式避免整文件进内存；发帖先选再传并拦截未上传提交；提高 Next proxy 体积上限。 Co-authored-by: Cursor <cursoragent@cursor.com>
This commit is contained in:
495
frontend/components/ComposeAttachments.tsx
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495
frontend/components/ComposeAttachments.tsx
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@@ -0,0 +1,495 @@
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"use client";
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import {
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useCallback,
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useEffect,
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useId,
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useRef,
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useState,
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type DragEvent,
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type ReactNode,
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} from "react";
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import { Loader2, Paperclip, Upload, X } from "lucide-react";
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import {
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apiDeletePostFile,
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apiUpdatePostFilePrice,
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apiUploadPostFile,
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type PostAttachment,
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} from "@/lib/api";
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import { fileExtBadge, fileKind } from "@/lib/fileKind";
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import { buildAcceptAttr, rejectPostFile } from "@/lib/postFile";
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import { toast } from "@/lib/toast";
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function formatSize(n: number) {
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if (n < 1024) return `${n} B`;
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if (n < 1024 * 1024) return `${(n / 1024).toFixed(1)} KB`;
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return `${(n / 1024 / 1024).toFixed(1)} MB`;
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}
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type UploadLimits = {
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maxMB: number;
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maxCount: number;
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extLimit: boolean;
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exts: string[];
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};
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/** 待上传（仅本地，未请求服务器） */
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type PendingItem = {
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key: string;
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file: File;
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name: string;
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size: number;
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};
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/** 正在上传的进度项 */
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type QueueItem = {
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key: string;
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name: string;
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size: number;
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progress: number;
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error?: string;
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};
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type Props = {
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attachments: PostAttachment[];
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onChange: (next: PostAttachment[]) => void;
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limits: UploadLimits;
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disabled?: boolean;
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/** 任一上传进行中时通知父级禁用发布 */
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onBusyChange?: (busy: boolean) => void;
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/** 待传（未点上传）数量变化，供父级提交前拦截提示 */
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onPendingChange?: (count: number) => void;
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/** 供底栏滚入定位 */
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sectionRef?: React.RefObject<HTMLElement | null>;
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};
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export default function ComposeAttachments({
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attachments,
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onChange,
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limits,
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disabled,
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onBusyChange,
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onPendingChange,
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sectionRef,
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}: Props) {
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const fileRef = useRef<HTMLInputElement>(null);
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const dropRef = useRef<HTMLDivElement>(null);
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const [dragOver, setDragOver] = useState(false);
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const [pending, setPending] = useState<PendingItem[]>([]);
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const [queue, setQueue] = useState<QueueItem[]>([]);
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const [uploading, setUploading] = useState(false);
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const priceTimers = useRef<Map<number, ReturnType<typeof setTimeout>>>(new Map());
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const titleId = useId();
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const busy = uploading || queue.length > 0;
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useEffect(() => {
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onBusyChange?.(busy);
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}, [busy, onBusyChange]);
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useEffect(() => {
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onPendingChange?.(pending.length);
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}, [pending.length, onPendingChange]);
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useEffect(() => {
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return () => {
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priceTimers.current.forEach((t) => clearTimeout(t));
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priceTimers.current.clear();
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onPendingChange?.(0);
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};
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}, [onPendingChange]);
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const accept = buildAcceptAttr(limits.exts, limits.extLimit);
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const hintLine = limits.extLimit
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? `单文件 ≤${limits.maxMB}MB，最多 ${limits.maxCount} 个；允许 ${
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limits.exts.length > 8
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? limits.exts.slice(0, 8).map((e) => `.${e}`).join(" ") + "…"
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: limits.exts.map((e) => `.${e}`).join(" ") || "（列表为空）"
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}`
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: `未限制类型，单文件 ≤${limits.maxMB}MB，最多 ${limits.maxCount} 个`;
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/** 仅加入待传列表，不立刻上传 */
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const stageFiles = useCallback(
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(files: FileList | File[]) => {
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const list = Array.from(files);
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if (!list.length || uploading || disabled) return;
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const next: PendingItem[] = [];
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let currentCount = attachments.length + pending.length;
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for (const file of list) {
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const rej = rejectPostFile(file, {
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limit: limits.extLimit,
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exts: limits.exts,
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maxMB: limits.maxMB,
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maxCount: limits.maxCount,
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currentCount,
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});
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if (rej.reason) {
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toast(rej.message || "无法添加", "error");
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continue;
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}
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next.push({
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key: `${Date.now()}-${Math.random().toString(36).slice(2, 8)}-${file.name}`,
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file,
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name: file.name,
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size: file.size,
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});
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currentCount++;
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}
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if (!next.length) return;
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setPending((prev) => [...prev, ...next]);
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if (fileRef.current) fileRef.current.value = "";
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},
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[attachments.length, disabled, limits, pending.length, uploading]
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);
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const removePending = (key: string) => {
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setPending((prev) => prev.filter((p) => p.key !== key));
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};
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const clearPending = () => {
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if (uploading) return;
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setPending([]);
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};
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/** 用户确认后再真正上传 */
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const uploadPending = useCallback(async () => {
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if (!pending.length || uploading || disabled) return;
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const batch = [...pending];
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setPending([]);
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setUploading(true);
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const items: QueueItem[] = batch.map((p) => ({
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key: p.key,
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name: p.name,
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size: p.size,
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progress: 8,
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}));
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setQueue(items);
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const added: PostAttachment[] = [];
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let liveCount = attachments.length;
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for (let i = 0; i < batch.length; i++) {
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const item = batch[i];
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const key = item.key;
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const rej = rejectPostFile(item.file, {
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limit: limits.extLimit,
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exts: limits.exts,
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maxMB: limits.maxMB,
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maxCount: limits.maxCount,
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currentCount: liveCount,
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});
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if (rej.reason) {
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setQueue((prev) =>
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prev.map((q) =>
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q.key === key ? { ...q, error: rej.message || "无法上传", progress: 100 } : q
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)
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);
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toast(rej.message || "无法上传", "error");
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continue;
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}
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setQueue((prev) =>
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prev.map((q) => (q.key === key ? { ...q, progress: 35 } : q))
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);
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try {
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const res = await apiUploadPostFile(item.file, 0);
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if (res.attachment) {
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added.push(res.attachment);
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liveCount++;
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setQueue((prev) =>
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prev.map((q) => (q.key === key ? { ...q, progress: 100 } : q))
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);
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} else {
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setQueue((prev) =>
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prev.map((q) =>
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q.key === key ? { ...q, error: res.error || "上传失败", progress: 100 } : q
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)
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);
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toast(res.error || "上传失败", "error");
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}
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} catch {
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setQueue((prev) =>
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prev.map((q) =>
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q.key === key ? { ...q, error: "上传失败", progress: 100 } : q
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)
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);
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toast("上传失败", "error");
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}
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}
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if (added.length) {
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onChange([...attachments, ...added]);
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toast(
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added.length === 1 ? "附件已上传" : `已上传 ${added.length} 个附件`,
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"ok"
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);
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}
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setQueue([]);
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setUploading(false);
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}, [attachments, disabled, limits, onChange, pending, uploading]);
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const removeAttachment = async (id: number) => {
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const prev = attachments;
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onChange(prev.filter((a) => a.id !== id));
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try {
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await apiDeletePostFile(id);
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} catch {
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onChange(prev);
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toast("移除失败", "error");
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}
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};
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const setAttPrice = (id: number, price: number) => {
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const p = Math.max(0, Math.min(100000, Math.floor(price) || 0));
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onChange(
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attachments.map((a) => (a.id === id ? { ...a, price_points: p } : a))
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);
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const prevSnapshot = attachments;
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const prevPrice = prevSnapshot.find((a) => a.id === id)?.price_points ?? 0;
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const timers = priceTimers.current;
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const old = timers.get(id);
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if (old) clearTimeout(old);
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timers.set(
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id,
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setTimeout(async () => {
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try {
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await apiUpdatePostFilePrice(id, p);
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} catch {
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onChange(
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prevSnapshot.map((a) =>
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a.id === id ? { ...a, price_points: prevPrice } : a
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)
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);
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toast("定价保存失败", "error");
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}
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}, 400)
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);
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};
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const onDrop = (e: DragEvent) => {
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e.preventDefault();
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setDragOver(false);
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if (e.dataTransfer.files?.length) stageFiles(e.dataTransfer.files);
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};
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const sectionProps = {
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ref: sectionRef as React.RefObject<HTMLElement>,
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className: "j13-compose-section j13-compose-attach-section",
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"aria-labelledby": titleId,
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id: "j13-compose-attachments",
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};
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const pickDisabled = disabled || uploading;
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const canUpload = pending.length > 0 && !uploading && !disabled;
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return (
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<section {...sectionProps}>
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<div className="flex items-center justify-between gap-3 flex-wrap">
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<h2 id={titleId} className="j13-compose-section-title j13-compose-attach-title !mb-0">
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<Paperclip size={14} aria-hidden />
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附件
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<span className="j13-compose-attach-badge">
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{attachments.length}/{limits.maxCount}
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</span>
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</h2>
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</div>
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<div
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ref={dropRef}
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className={`j13-compose-drop${dragOver ? " is-over" : ""}${
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pickDisabled ? " is-disabled" : ""
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}`}
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onDragEnter={(e) => {
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e.preventDefault();
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if (!pickDisabled) setDragOver(true);
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}}
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onDragOver={(e) => {
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e.preventDefault();
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if (!pickDisabled) setDragOver(true);
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}}
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onDragLeave={(e) => {
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if (!dropRef.current?.contains(e.relatedTarget as Node)) setDragOver(false);
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}}
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onDrop={onDrop}
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onClick={() => {
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if (!pickDisabled) fileRef.current?.click();
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}}
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role="button"
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tabIndex={pickDisabled ? -1 : 0}
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onKeyDown={(e) => {
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if (e.key === "Enter" || e.key === " ") {
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e.preventDefault();
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if (!pickDisabled) fileRef.current?.click();
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}
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}}
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aria-label="选择附件：拖拽或点击添加待传文件"
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>
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<Upload size={22} className="j13-compose-drop-icon" aria-hidden />
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<p className="j13-compose-drop-lead">
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{dragOver ? "放开以加入待传列表" : "拖到此处或点击选择文件"}
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</p>
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<p className="j13-compose-drop-hint">{hintLine}</p>
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<p className="j13-compose-drop-hint">选好后会在下方出现醒目的「上传」按钮 · 可设积分下载</p>
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<input
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ref={fileRef}
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type="file"
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className="hidden"
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multiple
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accept={accept}
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disabled={pickDisabled}
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onChange={(e) => {
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if (e.target.files?.length) stageFiles(e.target.files);
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}}
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onClick={(e) => e.stopPropagation()}
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/>
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</div>
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{pending.length > 0 ? (
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<div className="j13-compose-att-pending" role="region" aria-label="待上传附件">
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<div className="j13-compose-att-pending-head">
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<p className="j13-compose-att-pending-title">
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已选 {pending.length} 个文件 · 尚未上传
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</p>
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<button
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type="button"
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className="btn btn-line btn-sm"
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disabled={uploading || disabled}
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onClick={clearPending}
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>
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清空
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</button>
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</div>
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<ul className="j13-compose-att-queue" aria-label="待上传列表">
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{pending.map((p) => (
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<li key={p.key} className="j13-compose-att-card">
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<span className="j13-att-type" data-kind={fileKind(p.name, p.file.type || "")} aria-hidden>
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{fileExtBadge(p.name)}
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</span>
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<div className="min-w-0 flex-1">
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<div className="j13-compose-att-name truncate">{p.name}</div>
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<div className="meta text-[12px]">{formatSize(p.size)}</div>
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</div>
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<button
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type="button"
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className="btn btn-line btn-sm !px-2"
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data-tip="从待传列表移除"
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aria-label={`移除待传 ${p.name}`}
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disabled={uploading}
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onClick={() => removePending(p.key)}
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>
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<X size={14} />
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</button>
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</li>
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))}
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</ul>
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<button
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type="button"
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className="btn j13-compose-att-upload-btn"
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disabled={!canUpload}
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onClick={() => void uploadPending()}
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>
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<Upload size={16} aria-hidden />
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上传 {pending.length} 个文件
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</button>
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</div>
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) : null}
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{queue.length > 0 ? (
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<ul className="j13-compose-att-queue" aria-label="上传队列">
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{queue.map((q) => (
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<li key={q.key} className={`j13-compose-att-card${q.error ? " is-error" : ""}`}>
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<span className="j13-att-type" data-kind="file" aria-hidden>
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…
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</span>
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<div className="min-w-0 flex-1">
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<div className="j13-compose-att-name truncate">{q.name}</div>
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<div className="meta text-[12px]">
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{q.error || formatSize(q.size)}
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{uploading && !q.error ? (
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<Loader2 size={12} className="inline ml-1.5 animate-spin" />
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) : null}
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</div>
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<div className="j13-compose-att-bar" aria-hidden>
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<span style={{ width: `${q.progress}%` }} />
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</div>
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</div>
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</li>
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))}
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</ul>
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) : null}
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{attachments.length === 0 && pending.length === 0 && queue.length === 0 ? (
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<p className="meta text-[13px] py-1">暂无附件 · 选择文件后点上传</p>
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) : attachments.length > 0 ? (
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<ul className="j13-compose-att-list">
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{attachments.map((a) => (
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<li key={a.id} className="j13-compose-att-card">
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<span className="j13-att-type" data-kind={fileKind(a.name, a.mime)} aria-hidden>
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{fileExtBadge(a.name)}
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</span>
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<div className="min-w-0 flex-1">
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<div className="j13-compose-att-name truncate">{a.name}</div>
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<div className="meta text-[12px]">{formatSize(a.size)}</div>
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</div>
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<label
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className={`meta text-[12px] flex items-center gap-1.5 shrink-0${
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a.price_points > 0 ? " j13-compose-att-paid" : ""
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}`}
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>
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积分
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<input
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type="number"
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min={0}
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max={100000}
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value={a.price_points}
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disabled={disabled}
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onChange={(e) => setAttPrice(a.id, Number(e.target.value))}
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className="j13-compose-field !py-1 !px-2 w-20 text-[13px]"
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data-tip="0 = 免费下载"
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aria-label={`${a.name} 下载积分，0 为免费`}
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||||
onClick={(e) => e.stopPropagation()}
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/>
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</label>
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<button
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||||
type="button"
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className="btn btn-line btn-sm !px-2"
|
||||
data-tip="移除附件"
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aria-label="移除附件"
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||||
disabled={disabled}
|
||||
onClick={() => void removeAttachment(a.id)}
|
||||
>
|
||||
<X size={14} />
|
||||
</button>
|
||||
</li>
|
||||
))}
|
||||
</ul>
|
||||
) : null}
|
||||
</section>
|
||||
);
|
||||
}
|
||||
|
||||
/** 底栏「附件 N/M」入口 */
|
||||
export function ComposeAttachAction({
|
||||
count,
|
||||
max,
|
||||
onClick,
|
||||
children,
|
||||
}: {
|
||||
count: number;
|
||||
max: number;
|
||||
onClick: () => void;
|
||||
children?: ReactNode;
|
||||
}) {
|
||||
return (
|
||||
<button
|
||||
type="button"
|
||||
className="btn btn-line btn-sm inline-flex items-center gap-1.5"
|
||||
onClick={onClick}
|
||||
data-tip="跳转到附件区"
|
||||
>
|
||||
<Paperclip size={14} />
|
||||
附件 {count}/{max}
|
||||
{children}
|
||||
</button>
|
||||
);
|
||||
}
|
||||
Reference in New Issue
Block a user