The code that ChatGPT gave me

result.go

package main

import (
	"fmt"
	"io"
	"math/rand"
	"time"
)

type Job struct {
	Id       int
	FileName string
	FSType   string
	Status   string
}

type Store1 interface {
	GetBatchID() int
}

type Store2 interface {
	CreateBatchJob(Job) error
}

type Service struct {
	s1 Store1
	s2 Store2
}

type FileSystem interface {
	ReadFile(name string) (io.ReadCloser, error)
	WriteFile(name string) (io.WriteCloser, error)
	FSType() string
}

func (s *Service) UploadAndEnqueueJob(appID int, src io.ReadCloser, dest FileSystem) error {
	defer src.Close()

	// Generate a name using appID and a random string separated by a '-'
	randomString := generateRandomString(8)
	fileName := fmt.Sprintf("%d-%s", appID, randomString)

	// Write all bytes from 'src' to the io.WriteCloser
	destFile, err := dest.WriteFile(fileName)
	if err != nil {
		return err
	}
	defer destFile.Close()

	_, err = io.Copy(destFile, src)
	if err != nil {
		return err
	}

	// Call s1.GetBatchID() to get an id
	batchID := s.s1.GetBatchID()

	// Call s2.CreateBatchJob() using the id as Job.Id, set Job.Status to 'ALLOCATED' and 
	// Job.Name as the generated name passed to dest.WriteFile()
	job := Job{
		Id:       batchID,
		FileName: fileName,
		FSType:   dest.FSType(),
		Status:   "ALLOCATED",
	}

	err = s.s2.CreateBatchJob(job)
	if err != nil {
		return err
	}

	return nil
}

func generateRandomString(length int) string {
	const letters = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
	rand.Seed(time.Now().UnixNano())
	b := make([]byte, length)
	for i := range b {
		b[i] = letters[rand.Intn(len(letters))]
	}
	return string(b)
}

func main() {
	// Implementation of the main function is omitted for brevity.
	// You can test the UploadAndEnqueueJob method by providing actual implementations for Store1, 
	// Store2, and FileSystem interfaces.
}