package k8s

import (
	"strings"
	"testing"
	"time"

	"scm.bstein.dev/bstein/soteria/internal/api"
	"scm.bstein.dev/bstein/soteria/internal/config"

	batchv1 "k8s.io/api/batch/v1"
	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
)

func TestJobNameSanitizesAndTruncates(t *testing.T) {
	name := jobName("backup", "PVC.With Spaces_and_symbols________________________________")
	if len(name) > 63 {
		t.Fatalf("expected kubernetes-safe name length, got %d for %q", len(name), name)
	}
	if strings.ContainsAny(name, " _.") {
		t.Fatalf("expected sanitized name, got %q", name)
	}
	if !strings.HasPrefix(name, "soteria-backup-") {
		t.Fatalf("expected soteria backup prefix, got %q", name)
	}
}

func TestHelperDefaultsAndParsers(t *testing.T) {
	if !dedupeEnabled(nil) {
		t.Fatalf("expected nil dedupe to default true")
	}
	falseValue := false
	if dedupeEnabled(&falseValue) {
		t.Fatalf("expected explicit false dedupe to remain false")
	}
	if keepLastWithDefault(nil) != 0 {
		t.Fatalf("expected nil keep_last to default to zero")
	}
	negative := -5
	if keepLastWithDefault(&negative) != 0 {
		t.Fatalf("expected negative keep_last to clamp to zero")
	}
	if !parseBoolWithDefault("yes", false) || parseBoolWithDefault("off", true) {
		t.Fatalf("unexpected bool parsing")
	}
	if parseIntWithDefault("12", 0) != 12 || parseIntWithDefault("-1", 7) != 7 || parseIntWithDefault("bad", 9) != 9 {
		t.Fatalf("unexpected int parsing")
	}
}

func TestRepositoryHelpers(t *testing.T) {
	base := "s3:https://b2.example.invalid/atlas"
	if repo := resticRepositoryForBackup(base, "apps", "data", true); repo != base {
		t.Fatalf("expected dedupe-enabled repository to stay shared, got %q", repo)
	}
	isolated := resticRepositoryForBackup(base, "Apps", "Data.Volume", false)
	if !strings.Contains(isolated, "/isolated/apps/data-volume") {
		t.Fatalf("expected isolated repository suffix, got %q", isolated)
	}
	if sanitizeRepositorySegment(" ") != "unknown" {
		t.Fatalf("expected blank repository segment to default to unknown")
	}
	if appended := appendRepositoryPath("https://b2.example.invalid/root/", "/child/"); appended != "https://b2.example.invalid/root/child" {
		t.Fatalf("unexpected appended repository path %q", appended)
	}
}

func TestBuildBackupJobIncludesResticMetadata(t *testing.T) {
	cfg := &config.Config{
		ResticImage:          "restic/restic:test",
		ResticRepository:     "s3:https://b2.example.invalid/atlas",
		ResticBackupArgs:     []string{"--exclude", "/tmp"},
		ResticForgetArgs:     []string{"--keep-last", "7"},
		S3Endpoint:           "https://b2.example.invalid",
		S3Region:             "us-west-000",
		JobTTLSeconds:        900,
		JobNodeSelector:      map[string]string{"hardware": "rpi5"},
		WorkerServiceAccount: "soteria-worker",
	}
	req := api.BackupRequest{
		Namespace: "apps",
		PVC:       "data",
		Tags:      []string{"manual", "drill"},
	}

	job := buildBackupJob(cfg, req, "backup-job", "restic-secret", cfg.ResticRepository, true, 3)

	if job.Name != "backup-job" || job.Namespace != "apps" {
		t.Fatalf("unexpected job metadata: %#v", job.ObjectMeta)
	}
	if job.Labels[labelPVC] != "data" || job.Annotations[annotationKeepLast] != "3" {
		t.Fatalf("unexpected backup annotations/labels: %#v %#v", job.Labels, job.Annotations)
	}
	container := job.Spec.Template.Spec.Containers[0]
	if container.Image != "restic/restic:test" || container.Args[0] == "" {
		t.Fatalf("unexpected restic container: %#v", container)
	}
	if !strings.Contains(container.Args[0], "--tag pvc=data") || !strings.Contains(container.Args[0], "--exclude /tmp") {
		t.Fatalf("expected generated backup command to include request metadata, got %q", container.Args[0])
	}
	if job.Spec.Template.Spec.ServiceAccountName != "soteria-worker" {
		t.Fatalf("expected worker service account, got %#v", job.Spec.Template.Spec.ServiceAccountName)
	}
	if job.Spec.Template.Spec.NodeSelector["hardware"] != "rpi5" {
		t.Fatalf("expected node selector to be copied, got %#v", job.Spec.Template.Spec.NodeSelector)
	}
}

func TestBuildRestoreJobUsesTargetPVC(t *testing.T) {
	cfg := &config.Config{
		ResticImage:      "restic/restic:test",
		ResticRepository: "s3:https://b2.example.invalid/atlas",
		JobTTLSeconds:    600,
	}
	req := api.RestoreTestRequest{
		Namespace: "apps",
		TargetPVC: "restore-data",
	}

	job := buildRestoreJob(cfg, req, "restore-job", "restore-secret", "latest", cfg.ResticRepository)

	if job.Labels[labelPVC] != "restore-data" {
		t.Fatalf("expected target pvc label, got %#v", job.Labels)
	}
	if claim := job.Spec.Template.Spec.Volumes[0].PersistentVolumeClaim; claim == nil || claim.ClaimName != "restore-data" {
		t.Fatalf("expected restore volume pvc claim, got %#v", job.Spec.Template.Spec.Volumes[0])
	}
}

func TestGeneratedResticCommandsAndEnv(t *testing.T) {
	cfg := &config.Config{
		ResticRepository: "s3:https://b2.example.invalid/atlas",
		ResticBackupArgs: []string{"--exclude", "/cache"},
		S3Endpoint:       "https://b2.example.invalid",
		S3Region:         "us-west-000",
	}
	keepLast := 2
	command := backupCommand(cfg, api.BackupRequest{
		PVC:      "data",
		Dedupe:   boolPtr(false),
		KeepLast: &keepLast,
		Tags:     []string{"nightly"},
	})
	if !strings.Contains(command, "restic init") || !strings.Contains(command, "--keep-last 2") || !strings.Contains(command, "dedupe=off") {
		t.Fatalf("unexpected backup command %q", command)
	}

	restore := restoreCommand("latest")
	if !strings.Contains(restore, "restic restore latest") || !strings.Contains(restore, "/restore/") {
		t.Fatalf("unexpected restore command %q", restore)
	}

	env := resticEnv(cfg, "restic-secret", "")
	values := map[string]string{}
	for _, item := range env {
		values[item.Name] = item.Value
	}
	if values["RESTIC_REPOSITORY"] != cfg.ResticRepository || values["AWS_REGION"] != "us-west-000" {
		t.Fatalf("unexpected env values %#v", values)
	}
	if int32Ptr(7) == nil || *int32Ptr(7) != 7 {
		t.Fatalf("expected int32 pointer helper to round-trip")
	}
}

func TestSummarizeAndSortBackupJobs(t *testing.T) {
	now := time.Now().UTC()
	completed := batchv1.Job{
		ObjectMeta: metav1.ObjectMeta{
			Name:        "job-complete",
			Namespace:   "apps",
			CreationTimestamp: metav1.NewTime(now.Add(-2 * time.Hour)),
			Annotations: map[string]string{
				annotationResticRepository: "s3:https://b2.example.invalid/atlas",
				annotationDedupeEnabled:    "false",
				annotationKeepLast:         "5",
			},
		},
		Status: batchv1.JobStatus{
			Succeeded:      1,
			CompletionTime: &metav1.Time{Time: now.Add(-time.Hour)},
		},
	}
	running := batchv1.Job{
		ObjectMeta: metav1.ObjectMeta{
			Name:              "job-running",
			Namespace:         "apps",
			CreationTimestamp: metav1.NewTime(now.Add(-30 * time.Minute)),
		},
		Status: batchv1.JobStatus{
			Active: 1,
		},
	}

	completedSummary := summarizeBackupJob(completed, "data")
	if completedSummary.State != "Completed" || completedSummary.DedupeEnabled || completedSummary.KeepLast != 5 {
		t.Fatalf("unexpected completed summary %#v", completedSummary)
	}
	runningSummary := summarizeBackupJob(running, "data")
	if runningSummary.State != "Running" {
		t.Fatalf("unexpected running summary %#v", runningSummary)
	}

	items := []BackupJobSummary{completedSummary, runningSummary}
	sortBackupJobSummaries(items)
	if items[0].Name != "job-running" {
		t.Fatalf("expected newer running job first, got %#v", items)
	}
}

func boolPtr(value bool) *bool {
	return &value
}