@jackdbd/r2-media-store/lib/upload.js

Store Micropub media in a Cloudflare R2 bucket.

import { PutObjectCommand } from '@aws-sdk/client-s3';
import mime from 'mime';
import { nanoid } from 'nanoid';
import { defaultLog } from './log.js';
const defaults = {
    log: defaultLog
};
export const defUpload = (options) => {
    const config = Object.assign({}, defaults, options);
    const { bucket_name, bucket_prefix, ignore_filename, log, public_base_url, s3 } = config;
    const upload = async (cfg) => {
        const { body: Body, contentType: ContentType } = cfg;
        // TODO: extract this to a separate function, so it can be easily tested
        const filename = ignore_filename
            ? `${nanoid()}.${mime.getExtension(ContentType)}`
            : cfg.filename;
        const bucket_path = `${bucket_prefix}${filename}`;
        const public_url = `${public_base_url}${bucket_prefix}${filename}`;
        const params = {
            Bucket: bucket_name,
            Key: bucket_path,
            Body,
            ContentType
        };
        log.debug(`uploading ${filename} (ContentType: ${ContentType}) to bucket ${bucket_name} at ${bucket_path}`);
        // TODO: how do we know if the operation succeeded? From output.$metadata?
        const output = await s3.send(new PutObjectCommand(params));
        console.log('=== s3.send PutObjectCommand return value ===', output);
        const { ETag: etag, VersionId: version_id, $metadata: meta } = output;
        console.log('=== s3.send output metadata ===', meta);
        // const status_code = meta.httpStatusCode || 200;
        // const status_text = status_code === 201 ? "Created" : "Success";
        const summary = `File ${filename} is now hosted at ${public_url}.`;
        const details = [
            `File ${ContentType} uploaded to Cloudflare R2 bucket ${bucket_name} at ${bucket_path} and publicly available at ${public_url} (ETag: ${etag}, Version ID: ${version_id})`
        ];
        log.debug(summary);
        details.forEach(log.debug);
        return { url: public_url, summary, details };
    };
    return upload;
};
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