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Zip optimizations

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This commit is contained in:
Tilman 2025-12-03 00:05:54 +01:00
parent efb9f62a37
commit bba3cf6ecb
1 changed files with 34 additions and 15 deletions
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49
routes/api/files/download-directory.tsx
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@ -43,22 +43,39 @@ export const handler: Handlers<Data, FreshContextState> = {
// Create a JSZip instance
const zip = new JSZip();
// Recursively add files to the zip
async function addFilesToZip(currentPath: string, zipFolder: JSZip) {
// Recursively add files to the zip with optimizations
async function addFilesToZip(currentPath: string, zipFolder: JSZip, basePath = '') {
const entries = [];
for await (const entry of Deno.readDir(currentPath)) {
const entryPath = join(currentPath, entry.name);
entries.push(entry);
}
if (entry.isFile) {
// Read file and add to zip
const fileContent = await Deno.readFile(entryPath);
zipFolder.file(entry.name, fileContent);
} else if (entry.isDirectory) {
// Create a folder in the zip and recursively add its contents
const subFolder = zipFolder.folder(entry.name);
if (subFolder) {
await addFilesToZip(entryPath, subFolder);
}
}
// Process files in parallel batches
const batchSize = 10;
for (let i = 0; i < entries.length; i += batchSize) {
const batch = entries.slice(i, i + batchSize);
await Promise.all(
batch.map(async (entry) => {
const entryPath = join(currentPath, entry.name);
const relativePath = basePath ? `${basePath}/${entry.name}` : entry.name;
if (entry.isFile) {
// Use async file reading with streaming hint
const fileContent = await Deno.readFile(entryPath);
zipFolder.file(entry.name, fileContent, {
binary: true,
createFolders: false,
});
} else if (entry.isDirectory) {
// Create a folder in the zip and recursively add its contents
const subFolder = zipFolder.folder(entry.name);
if (subFolder) {
await addFilesToZip(entryPath, subFolder, relativePath);
}
}
})
);
}
}
@ -70,7 +87,9 @@ export const handler: Handlers<Data, FreshContextState> = {
type: 'nodebuffer',
streamFiles: true,
compression: 'DEFLATE',
compressionOptions: { level: 6 },
compressionOptions: {
level: 1,
},
});
// Convert Node.js stream to Web ReadableStream