package retention

import (
	"testing"

	core "git.yuntuo.hk/k2safe/orbit/model"
)

func TestDefaultsAndValidation(t *testing.T) {
	ns, err := core.NewID()
	if err != nil {
		t.Fatal(err)
	}
	p := Defaults(ns)
	if p.Enabled || p.Source != "default" || p.IdempotencyDays != 90 || p.TaskHistoryDays != 365 || p.AuditLogDays != 2555 {
		t.Fatalf("unexpected defaults: %+v", p)
	}
	if err := p.Validate(); err != nil {
		t.Fatal(err)
	}
	p.IdempotencyDays = 89
	if err := p.Validate(); err == nil {
		t.Fatal("accepted an idempotency window shorter than the safety minimum")
	}
}

func TestUpdateInputRequiresReasonAndKeepsSafetyMinimum(t *testing.T) {
	ns, _ := core.NewID()
	in := UpdateInput{
		IdempotencyDays: 90, TaskHistoryDays: 30, WorkflowHistoryDays: 30,
		EventLogDays: 30, DeliveryHistoryDays: 30, InboxHistoryDays: 30,
		AuditLogDays: 365, Reason: "quarterly retention review",
	}
	if _, err := in.ToPolicy(ns); err != nil {
		t.Fatal(err)
	}
	in.Reason = ""
	if _, err := in.ToPolicy(ns); err == nil {
		t.Fatal("accepted an empty audit reason")
	}
	in.Reason = "shorten"
	in.IdempotencyDays = 89
	if _, err := in.ToPolicy(ns); err == nil {
		t.Fatal("accepted an unsafe idempotency window")
	}
}

func TestFromEnvOverridesOnlyDeploymentDefaults(t *testing.T) {
	values := map[string]string{
		"ORBIT_RETENTION_IDEMPOTENCY_DAYS": "120",
		"ORBIT_RETENTION_TASK_DAYS":        "180",
		"ORBIT_RETENTION_AUDIT_DAYS":       "730",
	}
	p, err := FromEnv(func(k string) string { return values[k] })
	if err != nil {
		t.Fatal(err)
	}
	if p.IdempotencyDays != 120 || p.TaskHistoryDays != 180 || p.AuditLogDays != 730 || p.EventLogDays != DefaultEventLogDays {
		t.Fatalf("environment defaults not applied: %+v", p)
	}
	values["ORBIT_RETENTION_IDEMPOTENCY_DAYS"] = "89"
	if _, err := FromEnv(func(k string) string { return values[k] }); err == nil {
		t.Fatal("accepted unsafe environment idempotency window")
	}
}