import { Client } from "npm:minio";
import Jimp from 'npm:jimp';
import { config } from "https://deno.land/x/dotenv/mod.ts";
config({ export: true });

interface MinioObject {
  name: string;
}

// Retrieve MinIO details from environment variables
const minioEndpoint = Deno.env.get("S3_ENDPOINT_URL") || "your-minio-endpoint";
const minioAccessKey = Deno.env.get("S3_ACCESS_KEY") || "your-access-key";
const minioSecretKey = Deno.env.get("S3_SECRET_ACCESS_KEY") || "your-secret-key";
const minioBucketName = "silvester23";

const minioClient = new Client({
  endPoint: minioEndpoint,
  accessKey: minioAccessKey,
  secretKey: minioSecretKey,
});


const objects: MinioObject[] = [];

const objectStream = minioClient.listObjects(minioBucketName);

for await (const obj of objectStream) {
  objects.push({
    name: obj.name,
  });
}

// Process and upload images
for (const obj of objects) {
  const pngFilePath = obj.name;
  const jpgFilePath = `${pngFilePath.slice(0, -4)}.jpg`;

  // Check if the PNG file exists and there is no corresponding JPG file
  if (!objects.some((o) => o.name === jpgFilePath)) {
    // Download the PNG file from MinIO
    const pngBuffer = await minioClient.getObject(minioBucketName, pngFilePath);
    console.log(`Downloaded ${pngFilePath} from MinIO`);

    // Use Jimp to compress and convert the PNG to JPG
    const image = await Jimp.read(`http://s3-api.app.max-richter.dev/silvester23/${pngFilePath}`);
    const jpgBuffer = await image.quality(80).getBufferAsync(Jimp.MIME_JPEG);

    // Upload the JPG buffer back to the same MinIO bucket
    await minioClient.putObject(minioBucketName, jpgFilePath, jpgBuffer, {
      'Content-Type': 'image/jpeg',
    });

    console.log(`Uploaded ${jpgFilePath} to MinIO`);
  }
}