firestore

type Client interface {
	Close()

	CreateGreeting(ctx context.Context, d dto.CreateGreeting) (location string, err error)
	ReadGreeting(ctx context.Context, d dto.ReadGreeting) (*Greeting, error)
	DeleteGreeting(ctx context.Context, d dto.DeleteGreeting) error
	RenderGreeting(g Greeting) ([]byte, error)
}

type Greeting struct {
	ID      string `json:"id,omitempty"`
	Message string `json:"message,omitempty"`
}