package hostclaim

import (
	"context"
	"fmt"
	"testing"
	"time"

	"github.com/carlosframework/platform/internal/release"
)

func TestSingleOwnerAdoptionDiscoveryBoundary(t *testing.T) {
	for _, extraRegion := range []bool{false, true} {
		t.Run(fmt.Sprint(extraRegion), func(t *testing.T) {
			store := release.NewDirStore(t.TempDir())
			host := "single.example"
			nh := NewHolder{Family: "instance", Key: "apps/acct/app/instances/" + host + ".json", Account: "acct", App: "app", Host: host, CreatedAt: time.Date(2026, 10, 7, 0, 0, 0, 0, time.UTC), Region: "ie"}
			var otherRegions []string
			if extraRegion {
				otherRegions = []string{"us"}
			}
			seq := 0
			obs, err := Update(context.Background(), store, Observed{Host: host, Absent: true}, Adopt(nh, "only-box", otherRegions, nil, "discovery", func() string { seq++; return fmt.Sprintf("id%d", seq) }))
			if err != nil {
				t.Fatal(err)
			}
			if !extraRegion {
				if !obs.Claim.Touched.Complete || len(obs.Claim.Obligations) != 0 || obs.Claim.Touched.DiscoveryOp != "" {
					t.Fatalf("single-region adoption needs no evidence: %+v", obs.Claim)
				}
			} else {
				if obs.Claim.Touched.Complete || len(obs.Claim.Obligations) != 1 || obs.Claim.Obligations[0].Region != "us" {
					t.Fatalf("retirement region was omitted: %+v", obs.Claim)
				}
			}
		})
	}
}