package hostops

import (
	"github.com/carlosframework/platform/internal/hostclaim"
	"github.com/carlosframework/platform/internal/regionname"
)

func consoleHomeRegion(names []string) (string, error) {
	if len(names) > 1 {
		return "", ErrContract
	}
	home := ""
	if len(names) == 1 {
		home = names[0]
	}
	if home != "" && regionname.PlacementRegion(home) != home {
		return "", ErrContract
	}
	return home, nil
}

// Check the configured designation before interpreting an operation's alias.
// An operation that recorded no home name started alias-free (before any
// designation was published) and stays alias-free, so a later first
// publication does not strand it: its comparisons stay exact.
func operationHomeMatches(home string, c *hostclaim.Claim) bool {
	if c == nil || c.Op.Intent["home_region"] == "" {
		return true
	}
	return c.Op.Intent["home_region"] == home
}