@appsemble/node-utils/assets.js

NodeJS utilities used by Appsemble internally.

import { createReadStream } from 'node:fs';
import { stat } from 'node:fs/promises';
import { logger } from './logger.js';
import { uploadS3File } from './s3.js';
import { removeUploads } from './uploads.js';
export function setAssetHeaders(ctx, mime, filename, stats) {
    ctx.set('content-type', mime || 'application/octet-stream');
    if (filename) {
        ctx.set('content-disposition', `${mime?.startsWith('image') ? 'inline' : 'attachment'}; filename=${JSON.stringify(filename)}`);
    }
    if (stats) {
        ctx.set('Content-Length', String(stats.size));
        ctx.set('ETag', stats.etag);
        ctx.set('Last-Modified', stats.lastModified.toUTCString());
    }
    ctx.set('Access-Control-Expose-Headers', 'Content-Disposition');
    ctx.set('Cache-Control', 'max-age=31536000,immutable');
}
export function getCompressedFileMeta({ filename, mime }) {
    return { filename, mime };
}
export async function uploadAsset(appId, asset) {
    const { id, path } = asset;
    try {
        const stats = await stat(path);
        const stream = createReadStream(path);
        await uploadS3File(`app-${appId}`, id, stream, stats.size);
    }
    catch (error) {
        logger.error(error);
        throw error;
    }
}
export async function uploadAssets(appId, assets) {
    const filesToUnlink = [...new Set(assets.map(({ path }) => path))];
    try {
        for (const asset of assets) {
            await uploadAsset(appId, asset);
        }
    }
    finally {
        await removeUploads(filesToUnlink);
    }
}
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