import { PassThrough, pipeline, Readable } from "stream";
import { type Progress, Upload } from "@aws-sdk/lib-storage";
import { S3Client } from "@aws-sdk/client-s3";
import { createReadStream, createWriteStream } from 'fs';
import { createId } from '@paralleldrive/cuid2';
import prettyBytes from 'pretty-bytes';
import dotenv from 'dotenv'
dotenv.config({
  path: '../../.env.development'
})

if (!process.env.S3_BUCKET_NAME) throw new Error('S3_BUCKET_NAME missing in env');
if (!process.env.S3_BUCKET_KEY_ID) throw new Error('S3_BUCKET_KEY_ID missing in env');
if (!process.env.S3_BUCKET_APPLICATION_KEY) throw new Error('S3_BUCKET_APPLICATION_KEY missing in env');

async function uploadStream(client: S3Client, stream: NodeJS.ReadableStream, keyName: string) {
  // const pass = new PassThrough()
  // Create a stream to the S3 bucket. We use this stream to upload the livestream to Backblaze S3 service
  console.log(`keyName=${keyName}`)
  const target = {
    Bucket: process.env.S3_BUCKET_NAME!,
    Key: keyName,
    Body: new Readable().wrap(stream)
  }
  console.log(target)
  // greets https://stackoverflow.com/a/70159394/1004931
  try {
    const parallelUploads3 = new Upload({
      client: client,
      partSize: 1024 * 1024 * 5,
      // tags: [...], // optional tags
      queueSize: 1, // optional concurrency configuration
      leavePartsOnError: false, // optional manually handle dropped parts
      params: target,
    });


    parallelUploads3.on("httpUploadProgress", (progress) => {
      if (progress?.loaded) {
        console.log(`loaded ${progress.loaded} bytes (${prettyBytes(progress.loaded)})`);
      } else {
        console.log(`httpUploadProgress ${JSON.stringify(progress, null, 2)}`)
      }
    });

    const res = await parallelUploads3.done();
    return res

  } catch (e) {
    if (e instanceof Error) {
      console.error(`while uploading a file to s3, we encountered an error`)
      throw new Error(e.message);
    } else {
      throw new Error(`error of some sort ${JSON.stringify(e, null, 2)}`)
    }
  }
}

async function main() {
  try {
    const client = new S3Client({
      endpoint: 'https://s3.us-west-000.backblazeb2.com',
      region: 'us-west-000',
      credentials: {
        accessKeyId: process.env.S3_BUCKET_KEY_ID!,
        secretAccessKey: process.env.S3_BUCKET_APPLICATION_KEY!
      }
    });



    // let debugCounter = 0
    // let uploadStream = new PassThrough()
    // uploadStream.on('data', (data) => {
    //   debugCounter += data.length
    //   console.log(`[data] uploadStream. ${debugCounter} aggregated bytes (${prettyBytes(debugCounter)}).`)
    // })
    // uploadStream.on('drain', () => {
    //   console.log('[drain] uploadStream')
    // })
    // uploadStream.on('close', () => {
    //   console.log(`[close] uploadStream closed`)
    // })
    // uploadStream.on('error', (err) => {
    //   console.error('[error] uploadStream had an error as follows')
    //   console.error(err)
    // })
    // uploadStream.on('exit', (code) => {
    //   console.log(`[exit] uploadStream exited with code ${code}`)
    // })
    // uploadStream.on('disconnect', () => {
    //   console.log('[disconnect] uploadStream disconnected')
    // })
    // uploadStream.on('message', (msg) => {
    //   console.log('[message] uploadStream sent a message as follows')
    //   console.log(msg)
    // })



    const fileStream = createReadStream('/home/cj/Downloads/stream-23894234.ts')
    const datestamp = new Date().toISOString()
    const keyName = `${datestamp}-stream3-chaturbate-${createId()}.ts`
    await uploadStream(client, fileStream, keyName)

    // // we set up a pipeline which has an readable stream (ffmpeg), a transform stream (debug), and a writable stream (s3 Upload)
    // pipeline(
    //   fileStream,
    //   uploadStream,
    //   (err) => {
    //     if (err) {
    //       console.error(`pipeline errored.`)
    //       console.error(err)
    //     } else {
    //       console.log('pipeline succeeded.')
    //     }
    //   }
    // )



  } catch (e) {
    if (e instanceof Error) {
      console.error(`Eyy lookat me, I'm a big nastry try/catch block and I did my jorb!`)
      console.error(e)
    } else {
      console.error('err or some sort')
      console.error(e)
    }
  }

}
main()