package notify

import (
	"io"
	"log"
	"strings"
	"testing"
)

// v0.120.0 — the household hears about an update ONCE per app per event (R-629: a storm is a
// defect), and two apps on one night are two mails.
//
// COMPANION RED-PROOF (REPORT.md): drop the perAppCustomerCooldownEvents suffix in processCustomer —
// the second app's mail is swallowed by the first app's cooldown and this fails on the count.
func TestAppUpdateEvents_OneMailPerAppPerEvent(t *testing.T) {
	st := opOnlyStore(t)
	if err := st.SaveNotificationPrefs("c1", "customer@example.com",
		[]string{"app_update_undone", "app_update_held"}, 6); err != nil {
		t.Fatal(err)
	}
	var subjects []string
	d := NewDispatcher(st, "test-key", "from@felhom.eu", "operator@felhom.eu", true, log.New(io.Discard, "", 0))
	d.sendEmailFn = func(to, subject, _ string, _ map[string]string) error {
		if to == "customer@example.com" {
			subjects = append(subjects, subject)
		}
		return nil
	}
	fire := func(et, app string) {
		d.ProcessEvent("c1", et, "warning", "A(z) "+app+" frissitese nem sikerult.",
			`{"app":"`+app+`","stack_name":"`+app+`"}`, "controller")
	}
	fire("app_update_undone", "docmost")
	fire("app_update_undone", "romm")    // another app, same night → its own mail
	fire("app_update_undone", "docmost") // the same app again → no second mail
	fire("app_update_held", "docmost")   // another EVENT for the same app → its own mail

	if len(subjects) != 3 {
		t.Fatalf("want 3 household mails (docmost undone, romm undone, docmost held), got %d: %q", len(subjects), subjects)
	}
	for i, app := range []string{"docmost", "romm", "docmost"} {
		if !strings.Contains(subjects[i], app+":") {
			t.Errorf("mail %d must name %s in the subject, got %q", i, app, subjects[i])
		}
	}
}

// The other types keep their customer-side grain: the new register is not a blanket change.
func TestAppUpdateEvents_OtherTypesKeepTheirCustomerGrain(t *testing.T) {
	st := opOnlyStore(t)
	if err := st.SaveNotificationPrefs("c1", "customer@example.com", []string{"app_start_failed"}, 6); err != nil {
		t.Fatal(err)
	}
	n := 0
	d := NewDispatcher(st, "test-key", "from@felhom.eu", "operator@felhom.eu", true, log.New(io.Discard, "", 0))
	d.sendEmailFn = func(to, _, _ string, _ map[string]string) error {
		if to == "customer@example.com" {
			n++
		}
		return nil
	}
	d.ProcessEvent("c1", "app_start_failed", "error", "x", `{"stack_name":"a"}`, "controller")
	d.ProcessEvent("c1", "app_start_failed", "error", "x", `{"stack_name":"b"}`, "controller")
	if n != 1 {
		t.Fatalf("app_start_failed's household cooldown stays per TYPE (unchanged by v0.120.0), got %d mails", n)
	}
}