package backend

import (
	"strings"
	"testing"

	"github.com/emersion/go-imap/v2"
)

func TestSanitizeIMAPFlagsDropsRecentAndWildcard(t *testing.T) {
	got := sanitizeIMAPFlags([]imap.Flag{imap.FlagSeen, imap.Flag(`\Recent`), imap.FlagWildcard, imap.FlagAnswered})
	if len(got) != 2 || got[0] != imap.FlagSeen || got[1] != imap.FlagAnswered {
		t.Fatalf("sanitizeIMAPFlags returned %#v", got)
	}
}

func TestMessageIDFallsBackToBodyHash(t *testing.T) {
	body := []byte("From: a@example.com\r\nSubject: Test\r\n\r\nBody")
	id := messageID(body)
	if !strings.HasPrefix(id, "sha256:") {
		t.Fatalf("expected sha256 fallback, got %q", id)
	}
	if id != messageID(body) {
		t.Fatal("messageID hash fallback is not stable")
	}
}