package park

import "github.com/carlosframework/platform/internal/hostclaim"

// HolderRegionView is for read-only generation selection. Never persist it
// or use it to validate signed stop/loss evidence; those keep exact tuples.
func HolderRegionView(h hostclaim.Holder, home, region string) hostclaim.Holder {
	if home == "" || !SameRegion(home, region, HomeRegion) {
		return h
	}
	h.Admissions = append([]hostclaim.AdmissionRecord(nil), h.Admissions...)
	for i := range h.Admissions {
		a := &h.Admissions[i]
		if SameRegion(home, a.Region, region) {
			a.Region = region
		}
		if SameRegion(home, a.PredecessorRegion, region) {
			a.PredecessorRegion = region
		}
	}
	return h
}

func HomeView(o hostclaim.Observed, home string) hostclaim.Observed {
	if home == "" || o.Claim == nil || o.Claim.Holder == nil {
		return o
	}
	c := *o.Claim
	h := HolderRegionView(*c.Holder, home, HomeRegion)
	c.Holder = &h
	o.Claim = &c
	return o
}