// SPDX-License-Identifier: AGPL-3.0-only

package state

import (
	"os"
	"path/filepath"
	"testing"
	"time"
)

func TestStoreLoadRoundTripAndRejectSymlink(t *testing.T) {
	root := filepath.Join(t.TempDir(), "service")
	release := filepath.Join(root, "releases", "sha256-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa")
	if err := os.MkdirAll(release, 0o755); err != nil {
		t.Fatal(err)
	}
	path := filepath.Join(root, "state.json")
	at := time.Unix(1, 0).UTC().Format(time.RFC3339)
	record := Record{SchemaVersion: 1, Strategy: "singleton_candidate", DesiredRelease: release, ActiveSlot: "singleton", ActiveRelease: release, LastAttemptRelease: release, LastAttemptOutcome: "succeeded", LastAttemptAt: at, UpdatedAt: at}
	if err := Store(path, root, record); err != nil {
		t.Fatal(err)
	}
	loaded, err := Load(path, root, "singleton_candidate")
	if err != nil {
		t.Fatal(err)
	}
	if loaded.ActiveRelease != release || loaded.DesiredRelease != release || loaded.LastAttemptOutcome != "succeeded" {
		t.Fatalf("state=%+v", loaded)
	}
	if err := os.Remove(path); err != nil {
		t.Fatal(err)
	}
	if err := os.Symlink(filepath.Join(root, "elsewhere"), path); err != nil {
		t.Fatal(err)
	}
	if err := Store(path, root, record); err == nil {
		t.Fatal("expected symlink refusal")
	}
}

func TestRecordRequiresCandidateForRunningAttempt(t *testing.T) {
	root := filepath.Join(t.TempDir(), "service")
	release := filepath.Join(root, "releases", "sha256-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa")
	record := Record{SchemaVersion: 1, Strategy: "singleton_candidate", DesiredRelease: release, ActiveSlot: "singleton", ActiveRelease: release, LastAttemptRelease: release, LastAttemptOutcome: "running", LastAttemptAt: time.Unix(1, 0).UTC().Format(time.RFC3339), UpdatedAt: time.Unix(1, 0).UTC().Format(time.RFC3339)}
	if err := record.Validate(root, "singleton_candidate"); err == nil {
		t.Fatal("expected missing candidate rejection")
	}
}
func TestRecordRejectsReleaseOutsideRoot(t *testing.T) {
	record := Record{SchemaVersion: 1, Strategy: "singleton_candidate", ActiveSlot: "singleton", ActiveRelease: "/tmp/other/release", UpdatedAt: time.Unix(1, 0).UTC().Format(time.RFC3339)}
	if err := record.Validate("/opt/example", "singleton_candidate"); err == nil {
		t.Fatal("expected path refusal")
	}
}