import { S3Client } from "bun";
import { bucketConfigFromEnv, createS3Client } from "@agentuity/storage";
import { resolveEndpoint } from "@agentuity/storage/types";

// Reads the linked AWS_* bucket env.
const bucket = bucketConfigFromEnv();
const storage = createS3Client(bucket);
const key = "reports/demo-" + crypto.randomUUID() + ".txt";
const body = "Generated at " + new Date().toISOString();

// Portable SDK path: works in Bun and Node.js.
await storage.write(key, body, {
  type: "text/plain",
});

const file = storage.file(key);
const text = await file.text();
const stat = await storage.stat(key);
const listing = await storage.list({ prefix: "reports/", maxKeys: 10 });

// Bun-only presign option today: S3Client is Bun's client class.
const bunStorage = new S3Client({
  endpoint: resolveEndpoint(bucket),
  accessKeyId: bucket.access_key,
  secretAccessKey: bucket.secret_key,
  region: bucket.region ?? "auto",
  virtualHostedStyle: true,
});

const downloadUrl = bunStorage.presign(key, {
  method: "GET",
  expiresIn: 60 * 15,
});

// Node.js presign option:
// Use @aws-sdk/s3-request-presigner with @aws-sdk/client-s3.
// @agentuity/storage does not expose storage.presign() yet.
//
// Delete the object after the share URL no longer needs to work:
// await storage.delete(key);

export const report = {
  key,
  text,
  bytes: stat.size,
  filesListed: listing.contents.length,
  downloadUrl,
};