package dbdoor

import "regexp"

// ForwardBody is the db door's 409 for an instance a forwarding console can
// read in its own region (db region forward spec §5.5 step 1). It is
// additive to the {"error"} body every CLI reads, so an old CLI prints Error
// as it is (DBF-14) and a new one switches to the forwarded read.
type ForwardBody struct {
	Error      string   `json:"error"`
	Forward    int      `json:"forward"`
	Region     string   `json:"region"`
	ForwardOps []string `json:"forward_ops"`
}

// Forward is a DoorError's marker: where the data is, and which operations
// the console forwards there.
type Forward struct {
	Region string
	Ops    []string
}

// forwardRegion is dbreads.ValidRegion's shape. dbreads imports this
// package, so it is repeated here rather than imported.
var forwardRegion = regexp.MustCompile(`^[a-z][a-z0-9-]{0,31}$`)