transformer

type ExpandReq struct {
	Shorten string `json:"shorten,omitempty"`
}

type ExpandResp struct {
	Url string `json:"url,omitempty"`
}

type ShortenReq struct {
	Url string `json:"url,omitempty"`
}

type ShortenResp struct {
	Shorten string `json:"shorten,omitempty"`
}

type Transformer interface {
	Expand(ctx context.Context, in *ExpandReq) (*ExpandResp, error)
	Shorten(ctx context.Context, in *ShortenReq) (*ShortenResp, error)
}