package hostops

import (
	"encoding/json"
	"github.com/carlosframework/platform/internal/hostactors"
	"github.com/carlosframework/platform/internal/hostclaim"
	"github.com/carlosframework/platform/internal/park"
	"github.com/carlosframework/platform/internal/provision"
	"testing"
)

func TestPlan13BeginClaimMoveHomeAndNamed(t *testing.T) {
	for _, tc := range []struct{ name, home, from, to, target, want string }{
		{"out-home", "ie", "", "uk", "uk-box", "uk"},
		{"into-home", "uk", "ie", "", "uk-box", park.HomeRegion},
		{"named", "", "ie", "uk", "uk-box", "uk"},
	} {
		t.Run(tc.name, func(t *testing.T) {
			f := newMoveStartFixture(t, func(r *hostactors.Roster) { r.HomeRegion = tc.home })
			rec, etag, err := provision.GetRecordETag(t.Context(), f.raw, "bab", "app", f.host)
			if err != nil {
				t.Fatal(err)
			}
			rec.Region = tc.from
			raw, err := json.Marshal(rec)
			if err != nil {
				t.Fatal(err)
			}
			if _, err = f.raw.Store.Put(t.Context(), f.raw.recordKey, raw, etag); err != nil {
				t.Fatal(err)
			}
			o := f.read(t)
			// This is an existing claim, including its named touched region.
			h, err := f.authority.RegisterMove(t.Context(), o, "canonical", moveStartID)
			if err != nil {
				t.Fatal(err)
			}
			got, err := BeginClaimMove(t.Context(), f.raw, f.authority.Directory, h, o, moveStartID, "operator", tc.target, tc.to, f.now, tc.home)
			if err != nil {
				t.Fatal(err)
			}
			if got.Claim.Op.Intent["to"] != tc.want || got.Claim.Touched.Regions[0] != "ie" {
				t.Fatalf("%+v", got.Claim)
			}
			if got.Claim.Op.Intent["home_region"] != tc.home {
				t.Fatal("lost home binding")
			}
			_ = hostclaim.KindMoving
		})
	}
}

func TestPlan13MoveStartRefusesFalseHome(t *testing.T) {
	f := newMoveStartFixture(t, func(r *hostactors.Roster) { r.HomeRegion = "ie" })
	o := f.read(t)
	h, err := f.authority.RegisterMove(t.Context(), o, "canonical", moveStartID)
	if err != nil {
		t.Fatal(err)
	}
	if _, err := BeginClaimMove(t.Context(), f.raw, f.authority.Directory, h, o, moveStartID, "operator", "uk-box", "", f.now, "uk"); err == nil {
		t.Fatal("operation home overrode signed fleet home")
	}
	if f.read(t).ETag != o.ETag {
		t.Fatal("refusal mutated claim")
	}
}