package notify

import (
	"strings"
	"testing"
)

// TestEventMessageWireTextIsFrozen — localisation slice 2 (R-557), scenario S6.
//
// An event's `message` is ON THE WIRE and, unlike most wire text, a CUSTOMER READS IT. The hub's
// FormatCustomerEmail (felhom.eu/hub/internal/notify/templates.go) uses the per-type Hungarian
// `customerMessages` entry when it has one and FALLS BACK TO THIS MESSAGE when it has none — and
// appends it as „- Üzenet: %s" whenever it differs from the entry. Several event types deliberately
// have no entry precisely so the controller's dynamic sentence is what the household is sent
// (hub/internal/api/handler.go, the notes around offbox_enlarge_blocked and its neighbours).
//
// So these sentences are NOT the dashboard's to translate. They follow the household's language in
// slice 3 (R-558), where the hub learns which language the box reports and composes the mail. Until
// then they stay Hungarian in every language, and this test is what makes "stay" measurable: the
// golden strings below were captured from the producers at 736f54b49610, the base commit of
// v0.252.0, before any conversion.
//
// Not every producer is here — the table covers one representative of each SHAPE (fixed sentence,
// one parameter, two parameters, a numeric parameter, a branch per case), which is what a conversion
// would break. A producer converted by accident would have to escape every shape to escape this.
func TestEventMessageWireTextIsFrozen(t *testing.T) {
	cases := []struct {
		name string
		call func(n *Notifier)
		want string
	}{
		{
			name: "fixed sentence",
			call: func(n *Notifier) { n.NotifyDBDumpCompleted(DBDumpDetails{}) },
			want: "Adatbázis mentés elkészült",
		},
		{
			name: "one parameter",
			call: func(n *Notifier) { n.NotifyAppDeployed("privatebin", "PrivateBin") },
			want: "Alkalmazás telepítve: PrivateBin",
		},
		{
			name: "two parameters",
			call: func(n *Notifier) { n.NotifyBackupTargetAbsent("Kulso HDD", "/mnt/hdd_1") },
			want: "A rendszermentés meghajtója nem érhető el: Kulso HDD (/mnt/hdd_1)",
		},
		{
			name: "numeric parameter",
			call: func(n *Notifier) { n.NotifyDRStarted(3) },
			want: "Katasztrófa helyreállítás elindítva (3 alkalmazás)",
		},
		{
			name: "two numeric parameters",
			call: func(n *Notifier) { n.NotifyDRCompleted(7, 2) },
			want: "Katasztrófa helyreállítás befejezve (7 sikeres, 2 sikertelen)",
		},
		{
			name: "branch: update succeeded",
			call: func(n *Notifier) { n.NotifyControllerUpdated("0.251.0", "0.252.0", true) },
			want: "Controller frissítve: 0.251.0 → 0.252.0",
		},
		{
			name: "branch: update failed",
			call: func(n *Notifier) { n.NotifyControllerUpdated("0.251.0", "0.252.0", false) },
			want: "Controller frissítés sikertelen: 0.251.0 → 0.252.0",
		},
		{
			name: "disk health, sector count",
			call: func(n *Notifier) {
				n.NotifyDiskHealthDegraded(DiskAlert{Label: "Kulso HDD", Kind: DiskAlertFailSectors, Sectors: 352})
			},
			want: "Lemez hiba: Kulso HDD — a meghajtón 352 olvashatatlan szektor van. " +
				"Mentse az adatait, és keressen meg minket a meghajtó cseréjéhez.",
		},
	}

	for _, tc := range cases {
		t.Run(tc.name, func(t *testing.T) {
			var got string
			var seen int
			n := &Notifier{}
			n.pushFn = func(_, _, message, _ string, _ interface{}) {
				got, seen = message, seen+1
			}
			tc.call(n)
			// A producer that stopped pushing would otherwise leave `got` empty and compare unequal
			// with a confusing message; say which it was.
			if seen == 0 {
				t.Fatalf("the producer pushed no event at all — the golden below was never compared")
			}
			if got != tc.want {
				t.Errorf("event message moved (slice 2 may not translate what the hub mails)\n"+
					"  got  %q\n  want %q", got, tc.want)
			}
		})
	}
}

// TestEventMessagesCarryNoBundleKey is the other half: a converted producer would push a KEY, or a
// sentence assembled from one. Neither can look Hungarian, so this catches the accident the golden
// table above would miss for a producer it does not list.
func TestEventMessagesCarryNoBundleKey(t *testing.T) {
	var msgs []string
	n := &Notifier{}
	n.pushFn = func(_, _, message, _ string, _ interface{}) { msgs = append(msgs, message) }

	n.NotifyAppDeployed("privatebin", "PrivateBin")
	n.NotifyAppRemoved("privatebin", "PrivateBin")
	n.NotifyStorageReconnected("Kulso HDD")
	n.NotifyDRStarted(1)
	n.NotifyCrossDriveCompleted(CrossDriveDetails{StackName: "privatebin"})

	if len(msgs) == 0 {
		t.Fatal("no producer pushed — nothing was checked")
	}
	for _, m := range msgs {
		// A bundle key is lower-case, dotted and has no space: "event.app_deployed".
		if !strings.Contains(m, " ") && strings.Contains(m, ".") && m == strings.ToLower(m) {
			t.Errorf("an event message looks like a bundle key, not a sentence: %q", m)
		}
	}
}