//! Internationalization (i18n) support for the HCIE Iced GUI.
//!
//! Provides translation keys for UI strings with English and Turkish locales.
//! The `t()` function returns a `&'static str` for the given language and key,
//! enabling zero-cost string lookups at render time.

use serde::{Deserialize, Serialize};

/// Supported UI languages.
#[derive(Debug, Clone, Copy, PartialEq, Eq, Default, Serialize, Deserialize)]
pub enum Language {
    #[default]
    English,
    Turkish,
}

/// Translation keys for menu items and common UI strings.
#[allow(dead_code)]
pub enum TranslationKey {
    File,
    Edit,
    Image,
    Layer,
    Filter,
    Select,
    View,
    Window,
    Help,
    Tools,
    New,
    Open,
    Save,
    Export,
    Quit,
    Undo,
    Redo,
    Settings,
}

/// Returns the translated string for the given language and key.
///
/// Uses match arms to return `&'static str` — no allocations at call site.
#[allow(dead_code)]
pub fn t(lang: Language, key: TranslationKey) -> &'static str {
    match lang {
        Language::Turkish => match key {
            TranslationKey::File => "Dosya",
            TranslationKey::Edit => "Düzen",
            TranslationKey::Image => "Görüntü",
            TranslationKey::Layer => "Katman",
            TranslationKey::Filter => "Filtre",
            TranslationKey::Select => "Seç",
            TranslationKey::View => "Görünüm",
            TranslationKey::Window => "Pencere",
            TranslationKey::Help => "Yardım",
            TranslationKey::Tools => "Araçlar",
            TranslationKey::New => "Yeni...",
            TranslationKey::Open => "Aç...",
            TranslationKey::Save => "Kaydet",
            TranslationKey::Export => "Dışa Aktar...",
            TranslationKey::Quit => "Çıkış",
            TranslationKey::Undo => "Geri Al",
            TranslationKey::Redo => "İleri Al",
            TranslationKey::Settings => "Ayarlar",
        },
        Language::English => match key {
            TranslationKey::File => "File",
            TranslationKey::Edit => "Edit",
            TranslationKey::Image => "Image",
            TranslationKey::Layer => "Layer",
            TranslationKey::Filter => "Filter",
            TranslationKey::Select => "Select",
            TranslationKey::View => "View",
            TranslationKey::Window => "Window",
            TranslationKey::Help => "Help",
            TranslationKey::Tools => "Tools",
            TranslationKey::New => "New...",
            TranslationKey::Open => "Open...",
            TranslationKey::Save => "Save",
            TranslationKey::Export => "Export...",
            TranslationKey::Quit => "Quit",
            TranslationKey::Undo => "Undo",
            TranslationKey::Redo => "Redo",
            TranslationKey::Settings => "Settings",
        },
    }
}