LanguageManager.cs

namespace CityCapsule;

/// <summary>Supported UI languages.</summary>
public enum Language { English, Norwegian }

/// <summary>
/// Manages all user-interface strings in English and Norwegian.
/// Call SelectLanguage() once at startup; then use Get(key) everywhere.
/// </summary>
public static class LanguageManager
{
    /// <summary>Currently active language for the session.</summary>
    public static Language Current { get; private set; } = Language.English;

    // ── Language Selection ────────────────────────────────────────────────────

    /// <summary>
    /// Displays a language-selection screen and sets Current based on user input.
    /// </summary>
    public static void SelectLanguage()
    {
        Console.Clear();
        Console.WriteLine("╔══════════════════════════════════════════════════════════════╗");
        Console.WriteLine("║             CITY CAPSULE HOTEL  —  SELECT LANGUAGE           ║");
        Console.WriteLine("╠══════════════════════════════════════════════════════════════╣");
        Console.WriteLine("║                                                              ║");
        Console.WriteLine("║    1.  English                                               ║");
        Console.WriteLine("║    2.  Norsk  (Norwegian)                                    ║");
        Console.WriteLine("║                                                              ║");
        Console.WriteLine("╚══════════════════════════════════════════════════════════════╝");
        Console.Write("\n  Your choice / Ditt valg  [1-2]: ");

        Current = Console.ReadLine()?.Trim() switch
        {
            "1" => Language.English,
            "2" => Language.Norwegian,
            _   => Language.English   // default to English on invalid input
        };

        Console.Clear();
    }

    // ── String Lookup ─────────────────────────────────────────────────────────

    /// <summary>
    /// Returns the UI string for <paramref name="key"/> in the current language.
    /// Falls back to the key name itself if not found.
    /// </summary>
    public static string Get(string key) =>
        Strings.TryGetValue(key, out var dict) && dict.TryGetValue(Current, out var text)
            ? text
            : key;

    // ── All UI Strings ────────────────────────────────────────────────────────

    private static readonly Dictionary<string, Dictionary<Language, string>> Strings = new()
    {
        // ── Header ──────────────────────────────────────────────────────────
        ["hotel_banner"] = new()
        {
            [Language.English]   = "╔══════════════════════════════════════════════════════════════╗\n║              🏙️   CITY CAPSULE HOTEL                         ║\n╚══════════════════════════════════════════════════════════════╝",
            [Language.Norwegian] = "╔══════════════════════════════════════════════════════════════╗\n║              🏙️   CITY CAPSULE HOTELL                        ║\n╚══════════════════════════════════════════════════════════════╝",
        },
        ["main_menu_title"] = new()
        {
            [Language.English]   = "  ─── Main Menu ───────────────────────────────────────────────",
            [Language.Norwegian] = "  ─── Hovedmeny ──────────────────────────────────────────────",
        },

        // ── Menu items ───────────────────────────────────────────────────────
        ["menu_1"] = new()
        {
            [Language.English]   = "  1.  Show available rooms",
            [Language.Norwegian] = "  1.  Vis ledige rom",
        },
        ["menu_2"] = new()
        {
            [Language.English]   = "  2.  Create booking",
            [Language.Norwegian] = "  2.  Opprett bestilling",
        },
        ["menu_3"] = new()
        {
            [Language.English]   = "  3.  Self check-in  (automatic kiosk)",
            [Language.Norwegian] = "  3.  Selvbetjent innsjekk  (kiosk)",
        },
        ["menu_4"] = new()
        {
            [Language.English]   = "  4.  Check out",
            [Language.Norwegian] = "  4.  Sjekk ut",
        },
        ["menu_5"] = new()
        {
            [Language.English]   = "  5.  My bookings",
            [Language.Norwegian] = "  5.  Mine bestillinger",
        },
        ["menu_6"] = new()
        {
            [Language.English]   = "  6.  Register new guest",
            [Language.Norwegian] = "  6.  Registrer ny gjest",
        },
        ["menu_7"] = new()
        {
            [Language.English]   = "  7.  Cancel booking",
            [Language.Norwegian] = "  7.  Avbestill",
        },
        ["menu_8"] = new()
        {
            [Language.English]   = "  8.  Save data to CSV",
            [Language.Norwegian] = "  8.  Lagre data til CSV",
        },
        ["menu_0"] = new()
        {
            [Language.English]   = "  0.  Exit",
            [Language.Norwegian] = "  0.  Avslutt",
        },
        ["choose_option"] = new()
        {
            [Language.English]   = "  Choose option: ",
            [Language.Norwegian] = "  Velg alternativ: ",
        },

        // ── Prompts ──────────────────────────────────────────────────────────
        ["enter_checkin"] = new()
        {
            [Language.English]   = "  Check-in date  (dd.MM.yyyy): ",
            [Language.Norwegian] = "  Innsjekkingsdato  (dd.MM.yyyy): ",
        },
        ["enter_checkout"] = new()
        {
            [Language.English]   = "  Check-out date (dd.MM.yyyy): ",
            [Language.Norwegian] = "  Utsjekkingsdato (dd.MM.yyyy): ",
        },
        ["enter_guest_id"] = new()
        {
            [Language.English]   = "  Guest ID: ",
            [Language.Norwegian] = "  Gjeste-ID: ",
        },
        ["enter_room_number"] = new()
        {
            [Language.English]   = "  Room number: ",
            [Language.Norwegian] = "  Romnummer: ",
        },
        ["payment_method"] = new()
        {
            [Language.English]   = "  Payment method  (1 = Card,  2 = Vipps): ",
            [Language.Norwegian] = "  Betalingsmetode  (1 = Kort,  2 = Vipps): ",
        },
        ["card_number"] = new()
        {
            [Language.English]   = "  Card — last 4 digits: ",
            [Language.Norwegian] = "  Kort — siste 4 siffer: ",
        },
        ["card_type"] = new()
        {
            [Language.English]   = "  Card type (e.g. Visa / Mastercard): ",
            [Language.Norwegian] = "  Korttype (f.eks. Visa / Mastercard): ",
        },
        ["phone_number"] = new()
        {
            [Language.English]   = "  Vipps phone number: ",
            [Language.Norwegian] = "  Vipps-telefonnummer: ",
        },
        ["enter_name"] = new()
        {
            [Language.English]   = "  Full name: ",
            [Language.Norwegian] = "  Fullt navn: ",
        },
        ["enter_email"] = new()
        {
            [Language.English]   = "  Email address: ",
            [Language.Norwegian] = "  E-postadresse: ",
        },
        ["guest_type"] = new()
        {
            [Language.English]   = "  Guest type  (1 = Regular,  2 = VIP): ",
            [Language.Norwegian] = "  Gjestype  (1 = Vanlig,  2 = VIP): ",
        },
        ["booking_id"] = new()
        {
            [Language.English]   = "  Booking ID: ",
            [Language.Norwegian] = "  Bestillings-ID: ",
        },

        // ── Status / Results ─────────────────────────────────────────────────
        ["available_rooms_header"] = new()
        {
            [Language.English]   = "  ─── Available Rooms",
            [Language.Norwegian] = "  ─── Ledige rom",
        },
        ["no_rooms"] = new()
        {
            [Language.English]   = "  No rooms are available for this period.",
            [Language.Norwegian] = "  Ingen ledige rom for denne perioden.",
        },
        ["press_enter"] = new()
        {
            [Language.English]   = "\n  Press Enter to continue...",
            [Language.Norwegian] = "\n  Trykk Enter for å fortsette...",
        },
        ["invalid_input"] = new()
        {
            [Language.English]   = "  ✗  Invalid input. Please try again.",
            [Language.Norwegian] = "  ✗  Ugyldig inndata. Prøv igjen.",
        },
        ["goodbye"] = new()
        {
            [Language.English]   = "\n  Thank you for choosing City Capsule Hotel. Goodbye! 👋\n",
            [Language.Norwegian] = "\n  Takk for at du valgte City Capsule Hotell. Ha det bra! 👋\n",
        },
        ["vip_welcome"] = new()
        {
            [Language.English]   = "  🌟  VIP status activated! You enjoy 15 % off all bookings.",
            [Language.Norwegian] = "  🌟  VIP-status aktivert! Du får 15 % rabatt på alle bestillinger.",
        },
        ["not_checked_in"] = new()
        {
            [Language.English]   = "  ✗  This guest is not currently checked in.",
            [Language.Norwegian] = "  ✗  Gjesten er ikke innsjekket.",
        },
        ["booking_not_found"] = new()
        {
            [Language.English]   = "  ✗  Booking not found.",
            [Language.Norwegian] = "  ✗  Bestillingen ble ikke funnet.",
        },
    };
}