package notify

import (
	"strings"
	"testing"
)

// D53 (operator ruling 2026-10-26: operator-only reminders first): the held-app reminder reaches the OPERATOR — one mail
// whose subject names the app — and never the household, even with every event switched on (the R-97c configuration).
// The box's own app_held / app_hold_cleared are info: they mail nobody on either leg.
func TestD53_TheHeldAppReminderMailsTheOperatorOnly(t *testing.T) {
	st := opOnlyStore(t)
	if err := st.SaveNotificationPrefs("c1", "customer@example.com", []string{"app_held_reminder", "app_held", "app_hold_cleared", "backup_failed"}, 6); err != nil {
		t.Fatal(err)
	}
	var to, subjects []string
	d := opOnlyDispatcher(t, st, &sentTo{})
	d.sendEmailFn = func(addr, subject, body string, headers map[string]string) error {
		to = append(to, addr)
		subjects = append(subjects, subject)
		return nil
	}
	d.ProcessBoxEvent("c1", "app_held", "info", "App kimai is held: …", "", `{"stack_name":"kimai","reason":"unhealthy_stop"}`, "controller")
	d.ProcessBoxEvent("c1", "app_hold_cleared", "info", "App kimai is no longer held", "", `{"stack_name":"kimai"}`, "controller")
	if len(to) != 0 {
		t.Fatalf("the box's held-app events mailed %v — they must be recorded, never mailed", to)
	}
	d.ProcessEvent("c1", "app_held_reminder", "warning", "Customer c1: the app kimai has been held for 3 days …",
		`{"stack_name":"kimai","reason":"unhealthy_stop"}`, "hub")
	d.ProcessEvent("c1", "app_held_reminder", "warning", "Customer c1: the app paperless has been held for 3 days …",
		`{"stack_name":"paperless","reason":"update_failed"}`, "hub")
	for _, a := range to {
		if a == "customer@example.com" {
			t.Fatal("the household was mailed an operator-only held-app reminder")
		}
	}
	if len(to) != 2 {
		t.Fatalf("want 2 operator mails (two apps, per-app cooldown), got %d: %v", len(to), to)
	}
	if !strings.Contains(subjects[0], "kimai is still held") || !strings.Contains(subjects[1], "paperless is still held") {
		t.Fatalf("each subject must name its app: %q", subjects)
	}
}