package web

import (
	"strings"
	"testing"
	"time"
)

// TestA3_RestoredVersionSentence — the FIRST sentence after a restore of an older version (v0.275.0,
// `07` §6.6, D4 option A), both languages, and its absence when nothing changed. The brief's wording is
// the contract: which backup, which version, and what happens next.
func TestA3_RestoredVersionSentence(t *testing.T) {
	s := noteServer(t)
	at := time.Date(2026, 9, 26, 7, 29, 45, 0, time.UTC)
	pins := []string{"docmost/docmost:0.96.0@sha256:b5", "postgres:16-alpine", "redis:7-alpine"}

	s.versionPosition = func(string) (bool, bool) { return true, true }
	got := s.restoredVersionPrefix("docmost", true, pins, at)
	for _, want := range []string{"A(z) docmost visszaállt a(z) 2026-09-26 ", "-i mentésből", "docmost:0.96.0, postgres:16-alpine, redis:7-alpine verzióra", "lépésenként hozza naprakészre"} {
		if !strings.Contains(got, want) {
			t.Errorf("hu: missing %q in %q", want, got)
		}
	}
	if !strings.HasSuffix(got, " ") {
		t.Errorf("the prefix must end with a space before the outcome sentence: %q", got)
	}
	if err := s.settings.SetLanguage("en"); err != nil {
		t.Fatal(err)
	}
	got = s.restoredVersionPrefix("docmost", true, pins, at)
	if !strings.Contains(got, "docmost is back from the backup of 2026-09-26 ") || !strings.Contains(got, "one step at a time") {
		t.Errorf("en: %q", got)
	}

	// No tested step leads on from the restored version: say the box will not update it by itself.
	s.versionPosition = func(string) (bool, bool) { return true, false }
	if got := s.restoredVersionPrefix("docmost", true, pins, at); !strings.Contains(got, "does not update it by itself") {
		t.Errorf("no ladder step: %q", got)
	}
	// Nothing changed, or the app is not behind: no sentence.
	if got := s.restoredVersionPrefix("docmost", false, pins, at); got != "" {
		t.Errorf("unchanged version: %q", got)
	}
	s.versionPosition = func(string) (bool, bool) { return false, false }
	if got := s.restoredVersionPrefix("docmost", true, pins, at); got != "" {
		t.Errorf("not behind: %q", got)
	}
}