av1converter 2.6.0

//! Lightweight, dependency-free internationalization.
//!
//! Every user-facing string maps to a [`Msg`] key. [`t`] resolves a key for the
//! active [`Language`] to a `&'static str`. English is the default and the
//! fallback intent for every key. Because the match in [`t`] is exhaustive over
//! `Msg`, the compiler guarantees that no key is ever forgotten.

use serde::{Deserialize, Serialize};

/// UI language. Stored in the config file and selectable in Settings.
#[derive(Debug, Clone, Copy, PartialEq, Eq, Serialize, Deserialize, Default)]
pub enum Language {
    #[default]
    #[serde(rename = "en")]
    English,
    #[serde(rename = "it")]
    Italian,
    #[serde(rename = "es")]
    Spanish,
    #[serde(rename = "fr")]
    French,
    #[serde(rename = "de")]
    German,
    #[serde(rename = "zh")]
    Chinese,
}

impl Language {
    /// All languages, in display/cycle order.
    pub const ALL: [Language; 6] = [
        Language::English,
        Language::Italian,
        Language::Spanish,
        Language::French,
        Language::German,
        Language::Chinese,
    ];

    /// Native name shown in the language selector.
    pub fn display_name(self) -> &'static str {
        match self {
            Language::English => "English",
            Language::Italian => "Italiano",
            Language::Spanish => "Español",
            Language::French => "Français",
            Language::German => "Deutsch",
            Language::Chinese => "中文",
        }
    }

    /// The next language in [`Language::ALL`], wrapping around.
    pub fn next(self) -> Language {
        let i = Self::ALL.iter().position(|&l| l == self).unwrap_or(0);
        Self::ALL[(i + 1) % Self::ALL.len()]
    }

    /// The previous language in [`Language::ALL`], wrapping around.
    pub fn prev(self) -> Language {
        let i = Self::ALL.iter().position(|&l| l == self).unwrap_or(0);
        Self::ALL[(i + Self::ALL.len() - 1) % Self::ALL.len()]
    }
}

/// A translatable message key. Each maps to one string per [`Language`].
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
pub enum Msg {
    // ── Shared help / action words ───────────────────────────────────────────
    Navigate,
    Select,
    Proceed,
    Back,
    Toggle,
    Quit,
    Continue,
    Cancel,
    Confirm,
    NewConversion,
    Adjust,
    EditText,
    Save,
    SwitchPanel,
    SwitchMode,
    AllAudio,
    AllSubs,
    OpenFolderAction,
    SelectThisFolder,
    SwitchFile,

    // ── Home ─────────────────────────────────────────────────────────────────
    MenuTitle,
    HomeOpenFile,
    HomeOpenFolder,
    HomeOpenFolderRecursive,
    Configuration,
    EncoderLabel,
    VmafDisabled,
    VmafEnabledOpen,
    DepsNotAvailable,

    // ── Explorer ─────────────────────────────────────────────────────────────
    CurrentDirectory,
    Notice,
    SelectVideoFile,
    SelectFolder,
    SelectedWord,
    NoVideoFiles,

    // ── File confirm ─────────────────────────────────────────────────────────
    ConfirmSelection,
    Files,
    FilesSelectedWord,

    // ── Track config ─────────────────────────────────────────────────────────
    FileLabel,
    ResolutionLabel,
    TypeLabel,
    ModeLabel,
    OutputFileLabel,
    RemuxOnly,
    EncodeVideo,
    VideoInfo,
    AudioTracks,
    SubtitleTracks,
    SpaceToToggle,
    ForcedTag,
    Unknown,

    // ── Dolby Vision dialog ──────────────────────────────────────────────────
    DvDialogTitle,
    DvDialogPrompt,
    DvOptionKeep,
    DvOptionKeepDesc,
    DvOptionHdr10,
    DvOptionHdr10Desc,
    DvP5Warning,
    DvRecommended,
    DvRequiresSvt,
    DvModeHelp,
    DvKeptTag,

    // ── Queue ────────────────────────────────────────────────────────────────
    AnalyzingFilesTitle,
    Encoding,
    ConversionQueue,
    Status,
    Waiting,
    Complete,
    StatusAnalyzing,
    StatusConfiguring,
    StatusReady,
    StatusVerifying,
    StatusDone,
    Elapsed,
    Eta,
    Cancelled,
    Error,

    // ── Finish ───────────────────────────────────────────────────────────────
    ConversionComplete,
    Success,
    QualityWarning,
    SourceLabel,
    OutputLabel,
    ReductionLabel,
    SourceFileDeleted,
    SourceKept,
    TimeLabel,
    ResultTitle,
    Summary,
    Results,
    Converted,
    Skipped,
    Errors,
    TotalSpaceSaved,
    TotalTime,
    ThresholdLabel,
    SourceDeletedTag,
    SourceKeptTag,

    // ── Quality descriptions ─────────────────────────────────────────────────
    QualExcellent,
    QualVeryGood,
    QualGood,
    QualFair,
    QualPoor,
    QualBad,

    // ── Confirm dialog ───────────────────────────────────────────────────────
    CancelEncodingTitle,
    CancelEncodingPrompt,
    ExitAppTitle,
    ExitAppPrompt,
    AbandonTrackConfigTitle,
    AbandonTrackConfigPrompt,
    DiscardConfigTitle,
    DiscardConfigPrompt,
    CancelAnalysisTitle,
    CancelAnalysisPrompt,
    Yes,
    No,

    // ── Config screen ────────────────────────────────────────────────────────
    Settings,
    EnterToEdit,
    SavedExclaim,
    SaveFailed,
    CfgVmafThreshold,
    CfgVmafEnabled,
    CfgDeleteSource,
    CfgSvtPreset,
    CfgNvencPreset,
    CfgQualityPreset,
    QpLow,
    QpMedium,
    QpHigh,
    QpCustom,
    CfgRfSd,
    CfgRfHd,
    CfgRfFullHd,
    CfgRfFullHdHdr,
    CfgRfFullHdDv,
    CfgRfUhd,
    CfgRfUhdHdr,
    CfgRfUhdDv,
    CfgOutputSuffix,
    CfgOutputContainer,
    CfgSameDirectory,
    CfgAudioLanguages,
    CfgSubtitleLanguages,
    CfgLanguage,
    CfgDaemonEnabled,
    CfgDaemonBindAddress,
    CfgDaemonPort,

    // ── Daemon mode ──────────────────────────────────────────────────────────
    DaemonDisabledError,
    DaemonListening,
    DaemonShuttingDown,
    DaemonStarted,
    DaemonStartFailed,
    DaemonAlreadyRunning,
    DaemonRunning,
    DaemonNotRunning,
    DaemonStopped,
    DaemonStopFailed,
    DaemonStopHint,
}

/// Resolve a message key for the given language.
#[allow(clippy::too_many_lines)]
pub fn t(lang: Language, msg: Msg) -> &'static str {
    use Language::{
        Chinese as Zh, English as En, French as Fr, German as De, Italian as It, Spanish as Es,
    };
    match msg {
        // ── Shared help / action words ───────────────────────────────────────
        Msg::Navigate => match lang {
            En => "Navigate",
            It => "Naviga",
            Es => "Navegar",
            Fr => "Naviguer",
            De => "Navigieren",
            Zh => "导航",
        },
        Msg::Select => match lang {
            En => "Select",
            It => "Seleziona",
            Es => "Seleccionar",
            Fr => "Sélectionner",
            De => "Auswählen",
            Zh => "选择",
        },
        Msg::Proceed => match lang {
            En => "Proceed",
            It => "Procedi",
            Es => "Continuar",
            Fr => "Continuer",
            De => "Weiter",
            Zh => "继续",
        },
        Msg::Back => match lang {
            En => "Back",
            It => "Indietro",
            Es => "Atrás",
            Fr => "Retour",
            De => "Zurück",
            Zh => "返回",
        },
        Msg::Toggle => match lang {
            En => "Toggle",
            It => "Attiva/disattiva",
            Es => "Alternar",
            Fr => "Basculer",
            De => "Umschalten",
            Zh => "切换",
        },
        Msg::Quit => match lang {
            En => "Quit",
            It => "Esci",
            Es => "Salir",
            Fr => "Quitter",
            De => "Beenden",
            Zh => "退出",
        },
        Msg::Continue => match lang {
            En => "Continue",
            It => "Continua",
            Es => "Continuar",
            Fr => "Continuer",
            De => "Fortfahren",
            Zh => "继续",
        },
        Msg::Cancel => match lang {
            En => "Cancel",
            It => "Annulla",
            Es => "Cancelar",
            Fr => "Annuler",
            De => "Abbrechen",
            Zh => "取消",
        },
        Msg::Confirm => match lang {
            En => "Confirm",
            It => "Conferma",
            Es => "Confirmar",
            Fr => "Confirmer",
            De => "Bestätigen",
            Zh => "确认",
        },
        Msg::NewConversion => match lang {
            En => "New conversion",
            It => "Nuova conversione",
            Es => "Nueva conversión",
            Fr => "Nouvelle conversion",
            De => "Neue Konvertierung",
            Zh => "新建转换",
        },
        Msg::Adjust => match lang {
            En => "Adjust",
            It => "Regola",
            Es => "Ajustar",
            Fr => "Ajuster",
            De => "Anpassen",
            Zh => "调整",
        },
        Msg::EditText => match lang {
            En => "Edit text",
            It => "Modifica testo",
            Es => "Editar texto",
            Fr => "Modifier le texte",
            De => "Text bearbeiten",
            Zh => "编辑文本",
        },
        Msg::Save => match lang {
            En => "Save",
            It => "Salva",
            Es => "Guardar",
            Fr => "Enregistrer",
            De => "Speichern",
            Zh => "保存",
        },
        Msg::SwitchPanel => match lang {
            En => "Switch panel",
            It => "Cambia pannello",
            Es => "Cambiar panel",
            Fr => "Changer de panneau",
            De => "Bereich wechseln",
            Zh => "切换面板",
        },
        Msg::SwitchMode => match lang {
            En => "Switch mode",
            It => "Cambia modalità",
            Es => "Cambiar modo",
            Fr => "Changer de mode",
            De => "Modus wechseln",
            Zh => "切换模式",
        },
        Msg::AllAudio => match lang {
            En => "All audio",
            It => "Tutto l'audio",
            Es => "Todo el audio",
            Fr => "Tout l'audio",
            De => "Alle Audio",
            Zh => "全部音频",
        },
        Msg::AllSubs => match lang {
            En => "All subs",
            It => "Tutti i sottotitoli",
            Es => "Todos los subtítulos",
            Fr => "Tous les sous-titres",
            De => "Alle Untertitel",
            Zh => "全部字幕",
        },
        Msg::OpenFolderAction => match lang {
            En => "Open folder",
            It => "Apri cartella",
            Es => "Abrir carpeta",
            Fr => "Ouvrir le dossier",
            De => "Ordner öffnen",
            Zh => "打开文件夹",
        },
        Msg::SelectThisFolder => match lang {
            En => "Select this folder",
            It => "Seleziona questa cartella",
            Es => "Seleccionar esta carpeta",
            Fr => "Sélectionner ce dossier",
            De => "Diesen Ordner wählen",
            Zh => "选择此文件夹",
        },
        Msg::SwitchFile => match lang {
            En => "Switch file",
            It => "Cambia file",
            Es => "Cambiar archivo",
            Fr => "Changer de fichier",
            De => "Datei wechseln",
            Zh => "切换文件",
        },

        // ── Home ─────────────────────────────────────────────────────────────
        Msg::MenuTitle => match lang {
            En | It | Fr => "Menu",
            Es => "Menú",
            De => "Menü",
            Zh => "菜单",
        },
        Msg::HomeOpenFile => match lang {
            En => "Open video file",
            It => "Apri file video",
            Es => "Abrir archivo de video",
            Fr => "Ouvrir un fichier vidéo",
            De => "Videodatei öffnen",
            Zh => "打开视频文件",
        },
        Msg::HomeOpenFolder => match lang {
            En => "Open folder",
            It => "Apri cartella",
            Es => "Abrir carpeta",
            Fr => "Ouvrir un dossier",
            De => "Ordner öffnen",
            Zh => "打开文件夹",
        },
        Msg::HomeOpenFolderRecursive => match lang {
            En => "Open folder (recursive)",
            It => "Apri cartella (ricorsivo)",
            Es => "Abrir carpeta (recursivo)",
            Fr => "Ouvrir un dossier (récursif)",
            De => "Ordner öffnen (rekursiv)",
            Zh => "打开文件夹（递归）",
        },
        Msg::Configuration => match lang {
            En | Fr => "Configuration",
            It => "Configurazione",
            Es => "Configuración",
            De => "Konfiguration",
            Zh => "配置",
        },
        Msg::EncoderLabel => match lang {
            En | It | De => "Encoder",
            Es => "Codificador",
            Fr => "Encodeur",
            Zh => "编码器",
        },
        Msg::VmafDisabled => match lang {
            En => "VMAF quality validation disabled",
            It => "Validazione qualità VMAF disattivata",
            Es => "Validación de calidad VMAF desactivada",
            Fr => "Validation de qualité VMAF désactivée",
            De => "VMAF-Qualitätsprüfung deaktiviert",
            Zh => "VMAF 质量验证已禁用",
        },
        Msg::VmafEnabledOpen => match lang {
            En => "VMAF quality validation enabled (threshold: ",
            It => "Validazione qualità VMAF attiva (soglia: ",
            Es => "Validación de calidad VMAF activada (umbral: ",
            Fr => "Validation de qualité VMAF activée (seuil : ",
            De => "VMAF-Qualitätsprüfung aktiv (Schwelle: ",
            Zh => "VMAF 质量验证已启用（阈值：",
        },
        Msg::DepsNotAvailable => match lang {
            En => "Required Dependencies not available",
            It => "Dipendenze richieste non disponibili",
            Es => "Dependencias requeridas no disponibles",
            Fr => "Dépendances requises non disponibles",
            De => "Erforderliche Abhängigkeiten nicht verfügbar",
            Zh => "所需依赖项不可用",
        },

        // ── Explorer ─────────────────────────────────────────────────────────
        Msg::CurrentDirectory => match lang {
            En => "Current Directory",
            It => "Cartella corrente",
            Es => "Directorio actual",
            Fr => "Répertoire actuel",
            De => "Aktuelles Verzeichnis",
            Zh => "当前目录",
        },
        Msg::Notice => match lang {
            En => "Notice",
            It => "Avviso",
            Es => "Aviso",
            Fr => "Avis",
            De => "Hinweis",
            Zh => "提示",
        },
        Msg::SelectVideoFile => match lang {
            En => "Select Video File",
            It => "Seleziona file video",
            Es => "Seleccionar archivo de video",
            Fr => "Sélectionner un fichier vidéo",
            De => "Videodatei wählen",
            Zh => "选择视频文件",
        },
        Msg::SelectFolder => match lang {
            En => "Select Folder",
            It => "Seleziona cartella",
            Es => "Seleccionar carpeta",
            Fr => "Sélectionner un dossier",
            De => "Ordner wählen",
            Zh => "选择文件夹",
        },
        Msg::SelectedWord => match lang {
            En => "selected",
            It => "selezionati",
            Es => "seleccionados",
            Fr => "sélectionnés",
            De => "ausgewählt",
            Zh => "已选择",
        },
        Msg::NoVideoFiles => match lang {
            En => "No video files found in this folder",
            It => "Nessun file video trovato in questa cartella",
            Es => "No se encontraron archivos de video en esta carpeta",
            Fr => "Aucun fichier vidéo trouvé dans ce dossier",
            De => "Keine Videodateien in diesem Ordner gefunden",
            Zh => "此文件夹中未找到视频文件",
        },

        // ── File confirm ─────────────────────────────────────────────────────
        Msg::ConfirmSelection => match lang {
            En => "Confirm Selection",
            It => "Conferma selezione",
            Es => "Confirmar selección",
            Fr => "Confirmer la sélection",
            De => "Auswahl bestätigen",
            Zh => "确认选择",
        },
        Msg::Files => match lang {
            En => "Files",
            It => "File",
            Es => "Archivos",
            Fr => "Fichiers",
            De => "Dateien",
            Zh => "文件",
        },
        Msg::FilesSelectedWord => match lang {
            En => "files selected",
            It => "file selezionati",
            Es => "archivos seleccionados",
            Fr => "fichiers sélectionnés",
            De => "Dateien ausgewählt",
            Zh => "个文件已选择",
        },

        // ── Track config ─────────────────────────────────────────────────────
        Msg::FileLabel => match lang {
            En | It => "File",
            Es => "Archivo",
            Fr => "Fichier",
            De => "Datei",
            Zh => "文件",
        },
        Msg::ResolutionLabel => match lang {
            En => "Resolution",
            It => "Risoluzione",
            Es => "Resolución",
            Fr => "Résolution",
            De => "Auflösung",
            Zh => "分辨率",
        },
        Msg::TypeLabel => match lang {
            En | Fr => "Type",
            It | Es => "Tipo",
            De => "Typ",
            Zh => "类型",
        },
        Msg::ModeLabel => match lang {
            En | Fr => "Mode",
            It => "Modalità",
            Es => "Modo",
            De => "Modus",
            Zh => "模式",
        },
        Msg::OutputFileLabel => match lang {
            En => "Output File",
            It => "File di output",
            Es => "Archivo de salida",
            Fr => "Fichier de sortie",
            De => "Ausgabedatei",
            Zh => "输出文件",
        },
        Msg::RemuxOnly => match lang {
            En => "Remux Only (Copy Video)",
            It => "Solo remux (copia video)",
            Es => "Solo remux (copiar video)",
            Fr => "Remux seul (copier la vidéo)",
            De => "Nur Remux (Video kopieren)",
            Zh => "仅重封装（复制视频）",
        },
        Msg::EncodeVideo => match lang {
            En => "Encode Video (AV1)",
            It => "Codifica video (AV1)",
            Es => "Codificar video (AV1)",
            Fr => "Encoder la vidéo (AV1)",
            De => "Video kodieren (AV1)",
            Zh => "编码视频（AV1）",
        },
        // ── Dolby Vision dialog ──────────────────────────────────────────────
        Msg::DvDialogTitle => match lang {
            En => "Dolby Vision Source",
            It => "Sorgente Dolby Vision",
            Es => "Fuente Dolby Vision",
            Fr => "Source Dolby Vision",
            De => "Dolby-Vision-Quelle",
            Zh => "杜比视界源",
        },
        Msg::DvDialogPrompt => match lang {
            En => "This file contains Dolby Vision. How should it be converted?",
            It => "Questo file contiene Dolby Vision. Come deve essere convertito?",
            Es => "Este archivo contiene Dolby Vision. ¿Cómo debe convertirse?",
            Fr => "Ce fichier contient du Dolby Vision. Comment le convertir ?",
            De => "Diese Datei enthält Dolby Vision. Wie soll sie konvertiert werden?",
            Zh => "此文件包含杜比视界。要如何转换？",
        },
        Msg::DvOptionKeep => match lang {
            En => "AV1 with Dolby Vision (profile 10)",
            It => "AV1 con Dolby Vision (profilo 10)",
            Es => "AV1 con Dolby Vision (perfil 10)",
            Fr => "AV1 avec Dolby Vision (profil 10)",
            De => "AV1 mit Dolby Vision (Profil 10)",
            Zh => "AV1 保留杜比视界（Profile 10）",
        },
        Msg::DvOptionKeepDesc => match lang {
            En => "Keeps the dynamic metadata in the AV1 stream",
            It => "Mantiene i metadati dinamici nel flusso AV1",
            Es => "Mantiene los metadatos dinámicos en el flujo AV1",
            Fr => "Conserve les métadonnées dynamiques dans le flux AV1",
            De => "Behält die dynamischen Metadaten im AV1-Stream",
            Zh => "在 AV1 流中保留动态元数据",
        },
        Msg::DvOptionHdr10 => match lang {
            En => "AV1 with true HDR10",
            It => "AV1 con vero HDR10",
            Es => "AV1 con HDR10 verdadero",
            Fr => "AV1 avec HDR10 véritable",
            De => "AV1 mit echtem HDR10",
            Zh => "AV1 转为真正的 HDR10",
        },
        Msg::DvOptionHdr10Desc => match lang {
            En => "Drops the DV layer, keeps HDR10 static metadata",
            It => "Rimuove il livello DV, mantiene i metadati statici HDR10",
            Es => "Elimina la capa DV, mantiene los metadatos estáticos HDR10",
            Fr => "Supprime la couche DV, conserve les métadonnées statiques HDR10",
            De => "Entfernt die DV-Ebene, behält statische HDR10-Metadaten",
            Zh => "移除 DV 层，保留 HDR10 静态元数据",
        },
        Msg::DvP5Warning => match lang {
            En => "Profile 5 has no HDR10 base layer: keeping DV needs a DV-capable player; HDR10 tone-maps on the GPU (Vulkan).",
            It => "Il profilo 5 non ha un livello base HDR10: mantenere DV richiede un lettore compatibile DV; HDR10 usa tone mapping su GPU (Vulkan).",
            Es => "El perfil 5 no tiene capa base HDR10: mantener DV requiere un reproductor compatible con DV; HDR10 usa tone mapping en GPU (Vulkan).",
            Fr => "Le profil 5 n'a pas de couche de base HDR10 : garder le DV exige un lecteur compatible DV ; HDR10 applique un tone mapping GPU (Vulkan).",
            De => "Profil 5 hat keine HDR10-Basisebene: DV behalten erfordert einen DV-fähigen Player; HDR10 nutzt GPU-Tone-Mapping (Vulkan).",
            Zh => "Profile 5 没有 HDR10 基础层：保留 DV 需要支持 DV 的播放器；转 HDR10 将使用 GPU 色调映射（Vulkan）。",
        },
        Msg::DvRecommended => match lang {
            En => "recommended",
            It => "consigliato",
            Es => "recomendado",
            Fr => "recommandé",
            De => "empfohlen",
            Zh => "推荐",
        },
        Msg::DvRequiresSvt => match lang {
            En => "Dolby Vision passthrough requires the SVT-AV1 encoder",
            It => "Il passthrough Dolby Vision richiede l'encoder SVT-AV1",
            Es => "El passthrough de Dolby Vision requiere el codificador SVT-AV1",
            Fr => "Le passthrough Dolby Vision nécessite l'encodeur SVT-AV1",
            De => "Dolby-Vision-Passthrough erfordert den SVT-AV1-Encoder",
            Zh => "杜比视界直通需要 SVT-AV1 编码器",
        },
        Msg::DvModeHelp => match lang {
            En => "DV Mode",
            It | Es => "Modo DV",
            Fr => "Mode DV",
            De => "DV-Modus",
            Zh => "DV 模式",
        },
        Msg::DvKeptTag => match lang {
            En => "kept",
            It => "mantenuto",
            Es => "mantenido",
            Fr => "conservé",
            De => "beibehalten",
            Zh => "保留",
        },

        Msg::VideoInfo => match lang {
            En => "Video Info",
            It => "Info video",
            Es => "Información del video",
            Fr => "Infos vidéo",
            De => "Video-Info",
            Zh => "视频信息",
        },
        Msg::AudioTracks => match lang {
            En => "Audio Tracks",
            It => "Tracce audio",
            Es => "Pistas de audio",
            Fr => "Pistes audio",
            De => "Audiospuren",
            Zh => "音频轨道",
        },
        Msg::SubtitleTracks => match lang {
            En => "Subtitle Tracks",
            It => "Tracce sottotitoli",
            Es => "Pistas de subtítulos",
            Fr => "Pistes de sous-titres",
            De => "Untertitelspuren",
            Zh => "字幕轨道",
        },
        Msg::SpaceToToggle => match lang {
            En => "Space to toggle",
            It => "Spazio per attivare",
            Es => "Espacio para alternar",
            Fr => "Espace pour basculer",
            De => "Leertaste zum Umschalten",
            Zh => "空格切换",
        },
        Msg::ForcedTag => match lang {
            En => "Forced",
            It => "Forzato",
            Es => "Forzado",
            Fr => "Forcé",
            De => "Erzwungen",
            Zh => "强制",
        },
        Msg::Unknown => match lang {
            En => "Unknown",
            It => "Sconosciuto",
            Es => "Desconocido",
            Fr => "Inconnu",
            De => "Unbekannt",
            Zh => "未知",
        },

        // ── Queue ────────────────────────────────────────────────────────────
        Msg::AnalyzingFilesTitle => match lang {
            En => "Analyzing Files...",
            It => "Analisi file...",
            Es => "Analizando archivos...",
            Fr => "Analyse des fichiers...",
            De => "Dateien werden analysiert...",
            Zh => "正在分析文件...",
        },
        Msg::Encoding => match lang {
            En => "Encoding",
            It => "Codifica",
            Es => "Codificando",
            Fr => "Encodage",
            De => "Kodierung",
            Zh => "编码中",
        },
        Msg::ConversionQueue => match lang {
            En => "Conversion Queue",
            It => "Coda di conversione",
            Es => "Cola de conversión",
            Fr => "File de conversion",
            De => "Konvertierungswarteschlange",
            Zh => "转换队列",
        },
        Msg::Status => match lang {
            En | De => "Status",
            It => "Stato",
            Es => "Estado",
            Fr => "État",
            Zh => "状态",
        },
        Msg::Waiting => match lang {
            En => "Waiting...",
            It => "In attesa...",
            Es => "Esperando...",
            Fr => "En attente...",
            De => "Warten...",
            Zh => "等待中...",
        },
        Msg::Complete => match lang {
            En => "Complete!",
            It => "Completato!",
            Es => "¡Completado!",
            Fr => "Terminé !",
            De => "Fertig!",
            Zh => "完成！",
        },
        Msg::StatusAnalyzing => match lang {
            En => "Analyzing...",
            It => "Analisi...",
            Es => "Analizando...",
            Fr => "Analyse...",
            De => "Analysiere...",
            Zh => "分析中...",
        },
        Msg::StatusConfiguring => match lang {
            En => "Configuring...",
            It => "Configurazione...",
            Es => "Configurando...",
            Fr => "Configuration...",
            De => "Konfiguriere...",
            Zh => "配置中...",
        },
        Msg::StatusReady => match lang {
            En => "Ready",
            It => "Pronto",
            Es => "Listo",
            Fr => "Prêt",
            De => "Bereit",
            Zh => "就绪",
        },
        Msg::StatusVerifying => match lang {
            En => "Verifying quality...",
            It => "Verifica qualità...",
            Es => "Verificando calidad...",
            Fr => "Vérification de la qualité...",
            De => "Qualität wird geprüft...",
            Zh => "正在验证质量...",
        },
        Msg::StatusDone => match lang {
            En => "Done",
            It => "Fatto",
            Es => "Hecho",
            Fr => "Terminé",
            De => "Fertig",
            Zh => "完成",
        },
        Msg::Elapsed => match lang {
            En => "Elapsed",
            It => "Trascorso",
            Es => "Transcurrido",
            Fr => "Écoulé",
            De => "Verstrichen",
            Zh => "已用时",
        },
        Msg::Eta => match lang {
            En | Es | Fr => "ETA",
            It => "Stima",
            De => "Restzeit",
            Zh => "预计剩余",
        },
        Msg::Cancelled => match lang {
            En => "Cancelled",
            It => "Annullato",
            Es => "Cancelado",
            Fr => "Annulé",
            De => "Abgebrochen",
            Zh => "已取消",
        },
        Msg::Error => match lang {
            En | Es => "Error",
            It => "Errore",
            Fr => "Erreur",
            De => "Fehler",
            Zh => "错误",
        },

        // ── Finish ───────────────────────────────────────────────────────────
        Msg::ConversionComplete => match lang {
            En => "Conversion Complete!",
            It => "Conversione completata!",
            Es => "¡Conversión completada!",
            Fr => "Conversion terminée !",
            De => "Konvertierung abgeschlossen!",
            Zh => "转换完成！",
        },
        Msg::Success => match lang {
            En => "Success",
            It => "Successo",
            Es => "Éxito",
            Fr => "Réussi",
            De => "Erfolg",
            Zh => "成功",
        },
        Msg::QualityWarning => match lang {
            En => "Quality Warning",
            It => "Avviso qualità",
            Es => "Advertencia de calidad",
            Fr => "Avertissement de qualité",
            De => "Qualitätswarnung",
            Zh => "质量警告",
        },
        Msg::SourceLabel => match lang {
            En | Fr => "Source",
            It => "Origine",
            Es => "Origen",
            De => "Quelle",
            Zh => "源文件",
        },
        Msg::OutputLabel => match lang {
            En | It => "Output",
            Es => "Salida",
            Fr => "Sortie",
            De => "Ausgabe",
            Zh => "输出",
        },
        Msg::ReductionLabel => match lang {
            En => "Reduction",
            It => "Riduzione",
            Es => "Reducción",
            Fr => "Réduction",
            De => "Reduzierung",
            Zh => "减少",
        },
        Msg::SourceFileDeleted => match lang {
            En => "Source file deleted",
            It => "File di origine eliminato",
            Es => "Archivo de origen eliminado",
            Fr => "Fichier source supprimé",
            De => "Quelldatei gelöscht",
            Zh => "已删除源文件",
        },
        Msg::SourceKept => match lang {
            En => "Source kept",
            It => "Origine mantenuta",
            Es => "Origen conservado",
            Fr => "Source conservée",
            De => "Quelle behalten",
            Zh => "已保留源文件",
        },
        Msg::TimeLabel => match lang {
            En => "Time",
            It => "Tempo",
            Es => "Tiempo",
            Fr => "Temps",
            De => "Zeit",
            Zh => "用时",
        },
        Msg::ResultTitle => match lang {
            En => "Result",
            It => "Risultato",
            Es => "Resultado",
            Fr => "Résultat",
            De => "Ergebnis",
            Zh => "结果",
        },
        Msg::Summary => match lang {
            En => "Summary",
            It => "Riepilogo",
            Es => "Resumen",
            Fr => "Résumé",
            De => "Zusammenfassung",
            Zh => "摘要",
        },
        Msg::Results => match lang {
            En => "Results",
            It => "Risultati",
            Es => "Resultados",
            Fr => "Résultats",
            De => "Ergebnisse",
            Zh => "结果",
        },
        Msg::Converted => match lang {
            En => "Converted",
            It => "Convertiti",
            Es => "Convertidos",
            Fr => "Convertis",
            De => "Konvertiert",
            Zh => "已转换",
        },
        Msg::Skipped => match lang {
            En => "Skipped",
            It => "Saltati",
            Es => "Omitidos",
            Fr => "Ignorés",
            De => "Übersprungen",
            Zh => "已跳过",
        },
        Msg::Errors => match lang {
            En => "Errors",
            It => "Errori",
            Es => "Errores",
            Fr => "Erreurs",
            De => "Fehler",
            Zh => "错误",
        },
        Msg::TotalSpaceSaved => match lang {
            En => "Total space saved",
            It => "Spazio totale risparmiato",
            Es => "Espacio total ahorrado",
            Fr => "Espace total économisé",
            De => "Insgesamt gespart",
            Zh => "总共节省空间",
        },
        Msg::TotalTime => match lang {
            En => "Total time",
            It => "Tempo totale",
            Es => "Tiempo total",
            Fr => "Temps total",
            De => "Gesamtzeit",
            Zh => "总用时",
        },
        Msg::ThresholdLabel => match lang {
            En => "threshold",
            It => "soglia",
            Es => "umbral",
            Fr => "seuil",
            De => "Schwelle",
            Zh => "阈值",
        },
        Msg::SourceDeletedTag => match lang {
            En => "source deleted",
            It => "origine eliminata",
            Es => "origen eliminado",
            Fr => "source supprimée",
            De => "Quelle gelöscht",
            Zh => "源文件已删除",
        },
        Msg::SourceKeptTag => match lang {
            En => "source kept",
            It => "origine mantenuta",
            Es => "origen conservado",
            Fr => "source conservée",
            De => "Quelle behalten",
            Zh => "源文件已保留",
        },

        // ── Quality descriptions ─────────────────────────────────────────────
        Msg::QualExcellent => match lang {
            En | Fr => "Excellent",
            It => "Eccellente",
            Es => "Excelente",
            De => "Ausgezeichnet",
            Zh => "优秀",
        },
        Msg::QualVeryGood => match lang {
            En => "Very Good",
            It => "Molto buono",
            Es => "Muy bueno",
            Fr => "Très bon",
            De => "Sehr gut",
            Zh => "很好",
        },
        Msg::QualGood => match lang {
            En => "Good",
            It => "Buono",
            Es => "Bueno",
            Fr => "Bon",
            De => "Gut",
            Zh => "良好",
        },
        Msg::QualFair => match lang {
            En => "Fair",
            It => "Discreto",
            Es => "Aceptable",
            Fr => "Correct",
            De => "Ausreichend",
            Zh => "一般",
        },
        Msg::QualPoor => match lang {
            En => "Poor",
            It => "Scarso",
            Es => "Pobre",
            Fr => "Médiocre",
            De => "Mangelhaft",
            Zh => "较差",
        },
        Msg::QualBad => match lang {
            En => "Bad",
            It => "Pessimo",
            Es => "Malo",
            Fr => "Mauvais",
            De => "Schlecht",
            Zh => "差",
        },

        // ── Confirm dialog ───────────────────────────────────────────────────
        Msg::CancelEncodingTitle => match lang {
            En => "Cancel Encoding",
            It => "Annulla codifica",
            Es => "Cancelar codificación",
            Fr => "Annuler l'encodage",
            De => "Kodierung abbrechen",
            Zh => "取消编码",
        },
        Msg::CancelEncodingPrompt => match lang {
            En => "Are you sure you want to cancel the current encoding?",
            It => "Vuoi davvero annullare la codifica in corso?",
            Es => "¿Seguro que quieres cancelar la codificación actual?",
            Fr => "Voulez-vous vraiment annuler l'encodage en cours ?",
            De => "Möchten Sie die laufende Kodierung wirklich abbrechen?",
            Zh => "确定要取消当前编码吗？",
        },
        Msg::ExitAppTitle => match lang {
            En => "Exit Application",
            It => "Esci dall'applicazione",
            Es => "Salir de la aplicación",
            Fr => "Quitter l'application",
            De => "Anwendung beenden",
            Zh => "退出应用程序",
        },
        Msg::ExitAppPrompt => match lang {
            En => "Are you sure you want to exit?",
            It => "Vuoi davvero uscire?",
            Es => "¿Seguro que quieres salir?",
            Fr => "Voulez-vous vraiment quitter ?",
            De => "Möchten Sie wirklich beenden?",
            Zh => "确定要退出吗？",
        },
        Msg::AbandonTrackConfigTitle => match lang {
            En => "Discard Batch",
            It => "Annulla lotto",
            Es => "Descartar lote",
            Fr => "Abandonner le lot",
            De => "Stapel verwerfen",
            Zh => "放弃批次",
        },
        Msg::AbandonTrackConfigPrompt => match lang {
            En => "Are you sure you want to discard this batch and return home?",
            It => "Vuoi davvero annullare questo lotto e tornare al menu principale?",
            Es => "¿Seguro que quieres descartar este lote y volver al inicio?",
            Fr => "Voulez-vous vraiment abandonner ce lot et revenir à l'accueil ?",
            De => "Möchten Sie diesen Stapel wirklich verwerfen und zum Hauptmenü zurückkehren?",
            Zh => "确定要放弃此批次并返回主页吗？",
        },
        Msg::DiscardConfigTitle => match lang {
            En => "Discard Changes",
            It => "Annulla modifiche",
            Es => "Descartar cambios",
            Fr => "Annuler les modifications",
            De => "Änderungen verwerfen",
            Zh => "放弃更改",
        },
        Msg::DiscardConfigPrompt => match lang {
            En => "You have unsaved changes. Discard them and return home?",
            It => "Ci sono modifiche non salvate. Vuoi scartarle e tornare al menu principale?",
            Es => "Hay cambios sin guardar. ¿Descartarlos y volver al inicio?",
            Fr => {
                "Des modifications ne sont pas enregistrées. Les annuler et revenir à l'accueil ?"
            }
            De => "Es gibt ungespeicherte Änderungen. Verwerfen und zum Hauptmenü zurückkehren?",
            Zh => "有未保存的更改。是否放弃并返回主页？",
        },
        Msg::CancelAnalysisTitle => match lang {
            En => "Cancel Analysis",
            It => "Annulla analisi",
            Es => "Cancelar análisis",
            Fr => "Annuler l'analyse",
            De => "Analyse abbrechen",
            Zh => "取消分析",
        },
        Msg::CancelAnalysisPrompt => match lang {
            En => "Are you sure you want to cancel the analysis and return home?",
            It => "Vuoi davvero annullare l'analisi e tornare al menu principale?",
            Es => "¿Seguro que quieres cancelar el análisis y volver al inicio?",
            Fr => "Voulez-vous vraiment annuler l'analyse et revenir à l'accueil ?",
            De => "Möchten Sie die Analyse wirklich abbrechen und zum Hauptmenü zurückkehren?",
            Zh => "确定要取消分析并返回主页吗？",
        },
        Msg::Yes => match lang {
            En => "Yes",
            It => "Sì",
            Es => "Sí",
            Fr => "Oui",
            De => "Ja",
            Zh => "是",
        },
        Msg::No => match lang {
            En | It | Es => "No",
            Fr => "Non",
            De => "Nein",
            Zh => "否",
        },

        // ── Config screen ────────────────────────────────────────────────────
        Msg::Settings => match lang {
            En => "Settings",
            It => "Impostazioni",
            Es => "Ajustes",
            Fr => "Paramètres",
            De => "Einstellungen",
            Zh => "设置",
        },
        Msg::EnterToEdit => match lang {
            En => " (Enter to edit)",
            It => " (Invio per modificare)",
            Es => " (Enter para editar)",
            Fr => " (Entrée pour modifier)",
            De => " (Enter zum Bearbeiten)",
            Zh => "（按 Enter 编辑）",
        },
        Msg::SavedExclaim => match lang {
            En => "Saved!",
            It => "Salvato!",
            Es => "¡Guardado!",
            Fr => "Enregistré !",
            De => "Gespeichert!",
            Zh => "已保存！",
        },
        Msg::SaveFailed => match lang {
            En => "Save failed",
            It => "Salvataggio non riuscito",
            Es => "Error al guardar",
            Fr => "Échec de l'enregistrement",
            De => "Speichern fehlgeschlagen",
            Zh => "保存失败",
        },
        Msg::CfgVmafThreshold => match lang {
            En => "VMAF Threshold",
            It => "Soglia VMAF",
            Es => "Umbral VMAF",
            Fr => "Seuil VMAF",
            De => "VMAF-Schwelle",
            Zh => "VMAF 阈值",
        },
        Msg::CfgVmafEnabled => match lang {
            En => "VMAF Enabled",
            It => "VMAF attivo",
            Es => "VMAF activado",
            Fr => "VMAF activé",
            De => "VMAF aktiviert",
            Zh => "启用 VMAF",
        },
        Msg::CfgDeleteSource => match lang {
            En => "Delete Source on Success",
            It => "Elimina origine se riuscito",
            Es => "Eliminar origen si tiene éxito",
            Fr => "Supprimer la source si réussi",
            De => "Quelle bei Erfolg löschen",
            Zh => "成功后删除源文件",
        },
        Msg::CfgSvtPreset => match lang {
            En => "SVT-AV1 Preset",
            It => "Preset SVT-AV1",
            Es => "Preajuste SVT-AV1",
            Fr => "Préréglage SVT-AV1",
            De => "SVT-AV1-Voreinstellung",
            Zh => "SVT-AV1 预设",
        },
        Msg::CfgNvencPreset => match lang {
            En => "NVENC Preset",
            It => "Preset NVENC",
            Es => "Preajuste NVENC",
            Fr => "Préréglage NVENC",
            De => "NVENC-Voreinstellung",
            Zh => "NVENC 预设",
        },
        Msg::CfgQualityPreset => match lang {
            En => "Quality Preset",
            It => "Preset qualità",
            Es => "Preajuste de calidad",
            Fr => "Préréglage de qualité",
            De => "Qualitätsvoreinstellung",
            Zh => "质量预设",
        },
        Msg::QpLow => match lang {
            En => "Low",
            It => "Bassa",
            Es => "Baja",
            Fr => "Basse",
            De => "Niedrig",
            Zh => "低",
        },
        Msg::QpMedium => match lang {
            En => "Medium",
            It | Es => "Media",
            Fr => "Moyenne",
            De => "Mittel",
            Zh => "中",
        },
        Msg::QpHigh => match lang {
            En => "High",
            It | Es => "Alta",
            Fr => "Haute",
            De => "Hoch",
            Zh => "高",
        },
        Msg::QpCustom => match lang {
            En => "Custom",
            It => "Personalizzato",
            Es => "Personalizado",
            Fr => "Personnalisé",
            De => "Benutzerdefiniert",
            Zh => "自定义",
        },
        // Resolution/rate-factor labels are technical and stay language-invariant.
        Msg::CfgRfSd => "RF SD",
        Msg::CfgRfHd => "RF HD (720p)",
        Msg::CfgRfFullHd => "RF 1080p SDR",
        Msg::CfgRfFullHdHdr => "RF 1080p HDR",
        Msg::CfgRfFullHdDv => "RF 1080p DV",
        Msg::CfgRfUhd => "RF 4K SDR",
        Msg::CfgRfUhdHdr => "RF 4K HDR",
        Msg::CfgRfUhdDv => "RF 4K DV",
        Msg::CfgOutputSuffix => match lang {
            En => "Output Suffix",
            It => "Suffisso output",
            Es => "Sufijo de salida",
            Fr => "Suffixe de sortie",
            De => "Ausgabe-Suffix",
            Zh => "输出后缀",
        },
        Msg::CfgOutputContainer => match lang {
            En => "Output Container",
            It => "Contenitore output",
            Es => "Contenedor de salida",
            Fr => "Conteneur de sortie",
            De => "Ausgabecontainer",
            Zh => "输出容器",
        },
        Msg::CfgSameDirectory => match lang {
            En => "Same Directory Output",
            It => "Output nella stessa cartella",
            Es => "Salida en el mismo directorio",
            Fr => "Sortie dans le même dossier",
            De => "Ausgabe im selben Verzeichnis",
            Zh => "输出到同一目录",
        },
        Msg::CfgAudioLanguages => match lang {
            En => "Preferred Audio Languages",
            It => "Lingue audio preferite",
            Es => "Idiomas de audio preferidos",
            Fr => "Langues audio préférées",
            De => "Bevorzugte Audiosprachen",
            Zh => "首选音频语言",
        },
        Msg::CfgSubtitleLanguages => match lang {
            En => "Preferred Subtitle Languages",
            It => "Lingue sottotitoli preferite",
            Es => "Idiomas de subtítulos preferidos",
            Fr => "Langues de sous-titres préférées",
            De => "Bevorzugte Untertitelsprachen",
            Zh => "首选字幕语言",
        },
        Msg::CfgLanguage => match lang {
            En => "Language",
            It => "Lingua",
            Es => "Idioma",
            Fr => "Langue",
            De => "Sprache",
            Zh => "语言",
        },
        Msg::CfgDaemonEnabled => match lang {
            En => "Web Daemon Enabled",
            It => "Daemon web abilitato",
            Es => "Daemon web habilitado",
            Fr => "Daemon web activé",
            De => "Web-Daemon aktiviert",
            Zh => "启用 Web 守护进程",
        },
        Msg::CfgDaemonBindAddress => match lang {
            En => "Daemon Bind Address",
            It => "Indirizzo di ascolto daemon",
            Es => "Dirección de escucha del daemon",
            Fr => "Adresse d'écoute du daemon",
            De => "Daemon-Bindungsadresse",
            Zh => "守护进程监听地址",
        },
        Msg::CfgDaemonPort => match lang {
            En => "Daemon Port",
            It => "Porta daemon",
            Es => "Puerto del daemon",
            Fr => "Port du daemon",
            De => "Daemon-Port",
            Zh => "守护进程端口",
        },
        Msg::DaemonDisabledError => match lang {
            En => {
                "Daemon mode is disabled. Enable it in Settings or set enabled = true under [daemon] in config.toml."
            }
            It => {
                "La modalità daemon è disabilitata. Abilitala nelle Impostazioni o imposta enabled = true sotto [daemon] in config.toml."
            }
            Es => {
                "El modo daemon está deshabilitado. Habilítalo en Configuración o establece enabled = true bajo [daemon] en config.toml."
            }
            Fr => {
                "Le mode daemon est désactivé. Activez-le dans les Paramètres ou définissez enabled = true sous [daemon] dans config.toml."
            }
            De => {
                "Der Daemon-Modus ist deaktiviert. Aktiviere ihn in den Einstellungen oder setze enabled = true unter [daemon] in config.toml."
            }
            Zh => "守护进程模式已禁用。请在设置中启用，或在 config.toml 的 [daemon] 下设置 enabled = true。",
        },
        Msg::DaemonListening => match lang {
            En => "Web UI listening on",
            It => "Interfaccia web in ascolto su",
            Es => "Interfaz web escuchando en",
            Fr => "Interface web à l'écoute sur",
            De => "Web-UI lauscht auf",
            Zh => "Web 界面监听于",
        },
        Msg::DaemonShuttingDown => match lang {
            En => "Shutting down, stopping current encode...",
            It => "Arresto in corso, interruzione della codifica corrente...",
            Es => "Apagando, deteniendo la codificación actual...",
            Fr => "Arrêt en cours, interruption de l'encodage actuel...",
            De => "Wird beendet, aktuelle Kodierung wird gestoppt...",
            Zh => "正在关闭，停止当前编码...",
        },
        Msg::DaemonStarted => match lang {
            En => "Daemon started in the background",
            It => "Daemon avviato in background",
            Es => "Daemon iniciado en segundo plano",
            Fr => "Daemon démarré en arrière-plan",
            De => "Daemon im Hintergrund gestartet",
            Zh => "守护进程已在后台启动",
        },
        Msg::DaemonStartFailed => match lang {
            En => "Daemon failed to start; see the log at",
            It => "Avvio del daemon non riuscito; vedi il log in",
            Es => "El daemon no pudo iniciarse; consulta el registro en",
            Fr => "Échec du démarrage du daemon ; consultez le journal dans",
            De => "Daemon konnte nicht gestartet werden; siehe Log unter",
            Zh => "守护进程启动失败；请查看日志：",
        },
        Msg::DaemonAlreadyRunning => match lang {
            En => "Daemon is already running",
            It => "Il daemon è già in esecuzione",
            Es => "El daemon ya está en ejecución",
            Fr => "Le daemon est déjà en cours d'exécution",
            De => "Daemon läuft bereits",
            Zh => "守护进程已在运行",
        },
        Msg::DaemonRunning => match lang {
            En => "Daemon is running",
            It => "Il daemon è in esecuzione",
            Es => "El daemon está en ejecución",
            Fr => "Le daemon est en cours d'exécution",
            De => "Daemon läuft",
            Zh => "守护进程正在运行",
        },
        Msg::DaemonNotRunning => match lang {
            En => "Daemon is not running",
            It => "Il daemon non è in esecuzione",
            Es => "El daemon no está en ejecución",
            Fr => "Le daemon n'est pas en cours d'exécution",
            De => "Daemon läuft nicht",
            Zh => "守护进程未运行",
        },
        Msg::DaemonStopped => match lang {
            En => "Daemon stopped",
            It => "Daemon arrestato",
            Es => "Daemon detenido",
            Fr => "Daemon arrêté",
            De => "Daemon beendet",
            Zh => "守护进程已停止",
        },
        Msg::DaemonStopFailed => match lang {
            En => "Failed to stop the daemon:",
            It => "Impossibile arrestare il daemon:",
            Es => "No se pudo detener el daemon:",
            Fr => "Échec de l'arrêt du daemon :",
            De => "Daemon konnte nicht beendet werden:",
            Zh => "无法停止守护进程：",
        },
        Msg::DaemonStopHint => match lang {
            En => "Stop it with: av1converter --stop",
            It => "Arrestalo con: av1converter --stop",
            Es => "Deténlo con: av1converter --stop",
            Fr => "Arrêtez-le avec : av1converter --stop",
            De => "Beenden mit: av1converter --stop",
            Zh => "使用 av1converter --stop 停止",
        },
    }
}