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feat(DownloadAll): 并行下载

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awalol
2025-07-12 18:44:57 +08:00
committed by awalol
parent 2c461df5fc
commit 17200150dd
1 changed files with 28 additions and 20 deletions
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48
src/components/DownloadAll.tsx
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@@ -6,6 +6,7 @@ import { toast } from 'react-toastify';
export function DownloadAll() { export function DownloadAll() {
const files = useAppSelector(selectFiles); const files = useAppSelector(selectFiles);
const onClickDownloadAll = async () => { const onClickDownloadAll = async () => {
console.time('DownloadAll'); //开始计时
if (Object.keys(files).length === 0) { if (Object.keys(files).length === 0) {
toast.warning('未添加文件'); toast.warning('未添加文件');
return; return;
@@ -20,11 +21,10 @@ export function DownloadAll() {
//过滤处理失败的文件 //过滤处理失败的文件
const completeFiles = Object.values(files).filter((file) => file.state === ProcessState.COMPLETE); const completeFiles = Object.values(files).filter((file) => file.state === ProcessState.COMPLETE);
const filesLength = Object.keys(completeFiles).length; const fileCount = Object.keys(files).length;
//开始下载 //开始下载
let dir: FileSystemDirectoryHandle | undefined; let dir: FileSystemDirectoryHandle | undefined;
let success = 0;
try { try {
dir = await window.showDirectoryPicker({ mode: 'readwrite' }); dir = await window.showDirectoryPicker({ mode: 'readwrite' });
} catch (e) { } catch (e) {
@@ -34,27 +34,35 @@ export function DownloadAll() {
} }
} }
toast.warning('开始下载，请稍候'); toast.warning('开始下载，请稍候');
let success = 0;
const promises: Promise<void>[] = [];
for (const [_, file] of Object.entries(completeFiles)) { for (const [_, file] of Object.entries(completeFiles)) {
if (file.state !== ProcessState.COMPLETE) { const promise = new Promise<void>((resolve, reject) => {
return; console.log(`开始下载: ${file.fileName}`);
} const action = dir ? DownloadNew(dir, file) : DownloadOld(file);
try { action.then(
if (dir) { () => {
await DownloadNew(dir, file); console.log(`成功下载: ${file.fileName}`);
} else { success++;
await DownloadOld(file); resolve();
} },
success++; (e) => {
} catch (e) { console.error(`下载失败: ${file.fileName}`, e);
console.error(`下载失败: ${file.fileName}`, e); toast.error(`出现错误: ${e}`);
toast.error(`出现错误: ${e}`); reject(e);
} },
);
});
promises.push(promise);
} }
if (success === filesLength) { try {
toast.success(`成功下载: ${success}/${filesLength}首`); await Promise.allSettled(promises);
} else { toast.success(`成功下载: ${success}/${fileCount}首`);
toast.warning(`成功下载: ${success}/${filesLength}首`); } catch {
toast.warning(`成功下载: ${success}/${fileCount}首`);
} }
console.timeEnd('DownloadAll'); //停止计时
}; };
return ( return (