s3cp

type API interface {
	CopyObjectWithContext(aws.Context, *s3.CopyObjectInput, ...request.Option) (*s3.CopyObjectOutput, error)
	DeleteObjectWithContext(aws.Context, *s3.DeleteObjectInput, ...request.Option) (*s3.DeleteObjectOutput, error)
	HeadObjectWithContext(aws.Context, *s3.HeadObjectInput, ...request.Option) (*s3.HeadObjectOutput, error)
	// AbortMultipartUploadWithContext(aws.Context, *s3.AbortMultipartUploadInput, ...request.Option) (*s3.AbortMultipartUploadOutput, error)
	CreateMultipartUploadWithContext(aws.Context, *s3.CreateMultipartUploadInput, ...request.Option) (*s3.CreateMultipartUploadOutput, error)
	CompleteMultipartUploadWithContext(aws.Context, *s3.CompleteMultipartUploadInput, ...request.Option) (*s3.CompleteMultipartUploadOutput, error)
	UploadPartCopyWithContext(aws.Context, *s3.UploadPartCopyInput, ...request.Option) (*s3.UploadPartCopyOutput, error)
}

type Copier struct {
	// The chunk size for parts.
	PartSize int64

	// How long to run before we quit waiting.
	Timeout time.Duration

	// How many parts to copy at once.
	Concurrency int

	// Setting This Value To True Will Cause The Sdk To Avoid Calling
	// Abortmultipartupload On A Failure, Leaving All Successfully Uploaded
	// Parts On S3 For Manual Recovery.
	//
	// Note That Storing Parts Of An Incomplete Multipart Upload Counts
	// Towards space usage on S3 and will add additional costs if not cleaned
	// up.
	LeavePartsOnError bool

	// MustSvcForRegion returns a new API for the provided region.
	MustSvcForRegion func(*string) API

	// The s3 client ot use when copying.
	S3 API

	// SrcS3 is the source if set, it is a second region. Needed to delete.
	SrcS3 API

	// RequestOptions to be passed to the individual calls.
	RequestOptions []request.Option
}

type CopyInput struct {
	// If we should delete the source object on successful copy.
	Delete bool

	// The region of the destination bucket.
	Region *string

	// The region of the source bucket. If nil the SourceRegion is considered
	// to be the same as the destination bucket's region.
	SourceRegion *string

	// The size of the source object. If provided we use this to calculate the
	// parts copy source ranges. Otherwise we head the source object to get
	// the size.
	Size int64

	// COI is an embedded s3.CopyObjectInput struct.
	COI s3.CopyObjectInput
}