package engine

import (
	"slices"
	"strings"
	"testing"

	"jarl/internal/model"
)

// Ticking "update PTR" on an unchanged address record adds its PTR when
// the reverse zone is there (it was created after the record).
func TestUpdatePTRAddsMissing(t *testing.T) {
	env := newEnv(t)
	env.submit(env.admin, NewRequest(OpSettingsUpdate, 0, SettingsInput{Nameservers: &[]string{"ns1.example.net."}}))
	env.submit(env.admin, NewRequest(OpZoneCreate, 0, ZoneInput{Name: model.Ptr("example.com")}))
	env.submit(env.admin, rec("example.com", "ldn", "A", "139.144.144.154"))
	env.submit(env.admin, NewRequest(OpZoneCreate, 0, ZoneInput{Name: model.Ptr("139.144.144.154/32")}))
	var id int64
	for _, r := range env.state().Records {
		if r.Name == "ldn.example.com." {
			id = r.ID
		}
	}
	env.submit(env.admin, NewRequest(OpRecordUpdate, id, RecordInput{PTR: true}))
	got := env.records("154.144.144.139.in-addr.arpa.")
	if !slices.ContainsFunc(got, func(s string) bool { return strings.Contains(s, "PTR ldn.example.com.") }) {
		t.Errorf("reverse zone = %q", got)
	}
}

// In linked zones the PTR goes to the reverse zone of whichever linked
// view has one.
func TestUpdatePTRLinked(t *testing.T) {
	env := linkedEnv(t)
	env.submit(env.admin, NewRequest(OpZoneCreate, 0, ZoneInput{Name: model.Ptr("example.com"), View: model.Ptr("external"), LinkWith: "internal"}))
	env.submit(env.admin, recIn("internal", "ldn", "A", "139.144.144.154"))
	env.submit(env.admin, NewRequest(OpZoneCreate, 0, ZoneInput{Name: model.Ptr("139.144.144.154/32"), View: model.Ptr("external")}))
	res := env.submit(env.admin, NewRequest(OpRecordUpdate, env.recordID("internal", "ldn", "A"), RecordInput{PTR: true}))
	st := env.state()
	z := st.FindZone("154.144.144.139.in-addr.arpa.", st.ViewByName("external").ID)
	ok := false
	for _, r := range st.ZoneRecords(z.ID) {
		ok = ok || r.Type == "PTR" && r.Data == "ldn.example.com."
	}
	if !ok {
		t.Errorf("no PTR in external's reverse zone (warnings %q)", res.Warnings)
	}
	// Again: already there, nothing to do.
	if e := env.submitErr(env.admin, NewRequest(OpRecordUpdate, env.recordID("internal", "ldn", "A"), RecordInput{PTR: true})); !strings.Contains(e.Message, "nothing to do") {
		t.Errorf("second time: %v", e)
	}
}