Unlucky-Launcher/crates/i18n/src/catalog.rs

//! 消息目录：`Key` 枚举 + 中英两套常量表 + 取词 / 占位符渲染 / 缺译诊断。
//!
//! ## 为什么 key 是枚举而不是字符串
//!
//! 字符串 key（`"nav.instances"`）拼错了编译器一声不响，运行时才知道——本仓的说法是「运行时静默回落」。
//! 枚举 key 把这类错误前移到**编译期**：`Key::NavInstance`（真名是 `NavInstances`）直接
//! `error[E0599]`，不可能跑到运行时。
//!
//! **这里没有守卫测试**：曾经写过一个 `compile_fail` 文档测试想守这条，但复审实测它对
//! 「把 `Key` 换成字符串包装类型」这类变异仍然全绿——它守的是「这段代码编译不过」，而不是
//! 「编译期校验还在」。说不清真假的守卫比没有更糟，所以删了；这条纪律只靠枚举这个事实本身。
//!
//! ## 为什么两套译文写在**同一行**
//!
//! ```ignore
//! NavInstances => ("Instances", "实例"),
//! ```
//!
//! 一行就是「一个 key 的全部语言」。于是「加了 key 忘了译文」在结构上不可能发生——这比「运行时发现
//! 缺译再诊断」更强。缺译诊断（[`Catalog::diagnose`]）因此有两个真实用途：
//!
//! 1. **注入目录**：后续 mission 用 [`Catalog::from_entries`] 加第三套（繁体 / 更多语言）时，
//!    表格是手写的，缺条目的风险回来了；
//! 2. **回归守门**：万一有人把这张表改回「两套各写一遍」，[`Catalog::missing`] 的守卫测试立刻红。
//!
//! ## 缺译时给什么
//!
//! **不回落**（绝不拿另一种语言顶替，用户会看到「一半英文一半中文」的界面而不自知）：
//!
//! - [`Catalog::get`] → `None`（严格调用方用它）；
//! - [`Catalog::text`] → [`MISSING`]（`⟪missing⟫`，UI 上刺眼但一眼可辨）；
//! - [`Catalog::render`] → `⟪missing:KeyName⟫`（带上 key 名，方便照着日志补译）。

use crate::lang::Lang;

/// 缺译占位符（`text()` 的返回；故意刺眼——宁可难看，也不许静默顶替）。
pub const MISSING: &str = "⟪missing⟫";

/// 生成 `Key` 枚举 + 两套常量表（一行 = 一个 key 的全部语言）。
macro_rules! catalog {
    ($($variant:ident => ($en:literal, $zh:literal)),+ $(,)?) => {
        /// 可翻译文案的 key。**不存在时编译失败**（枚举变体名即契约）。
        #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, PartialOrd, Ord)]
        pub enum Key {
            $(
                #[doc = concat!("en: `", $en, "` / zh-CN: `", $zh, "`")]
                $variant,
            )+
        }

        impl Key {
            /// 全部 key（缺译诊断与完整性测试的遍历源）。
            pub const ALL: &'static [Key] = &[$(Key::$variant),+];

            /// 变体名（日志 / 缺译诊断里用来指认 key；不是文案）。
            #[must_use]
            pub const fn name(self) -> &'static str {
                match self {
                    $(Key::$variant => stringify!($variant),)+
                }
            }
        }

        const EN: &[(Key, &str)] = &[$((Key::$variant, $en)),+];
        const ZH_CN: &[(Key, &str)] = &[$((Key::$variant, $zh)),+];
    };
}

catalog! {
    // ── 导航轨（`pages::Route` 的四项）
    NavInstances => ("Instances", "实例"),
    NavDownload => ("Downloads", "下载"),
    NavLogs => ("Logs", "日志"),
    NavSettings => ("Settings", "设置"),

    // ── 实例页
    InstancesNew => ("New instance", "新建实例"),
    InstancesImport => ("Import", "导入"),
    InstancesBack => ("Back to instances", "返回实例列表"),
    InstancesPlay => ("Play", "启动"),
    InstancesLastPlayed => ("Last played {when}", "上次游玩 {when}"),
    InstancesEmptyTitle => ("No instance selected", "未选择实例"),
    InstancesEmptyBody => ("Pick an instance to see its details.", "选择一个实例查看详情。"),

    // ── 加载器（品牌名不翻译：Fabric / Forge / Quilt 一律原样，只有「原版」是词）
    LoaderVanilla => ("Vanilla", "原版"),

    // ── 启动结局（原来 UI 把 "Launch failed" 与 core 的「静默失败」拼成一句话，现在一句话 = 一个 key）
    LaunchOutcomeNormal => ("Finished normally", "正常结束"),
    LaunchOutcomeCrash => ("The game crashed", "游戏崩溃"),
    LaunchOutcomeSilent => (
        "Suspected silent failure: exit code 0, but the game never really started",
        "疑似静默失败：退出码 0，但游戏没真正跑起来"
    ),
    LaunchFailedWithCode => ("Launch failed (exit {code}): {reason}", "启动失败（退出码 {code}）：{reason}"),

    // ── 中文字体（D28：中文环境缺字体时的下载提示 / 失败回退）
    FontCjkNeedsDownload => (
        "No Chinese font found on this system. Download an open-source (OFL) Chinese font?",
        "系统里没找到中文字体。要下载一套开源（OFL）中文字体吗？"
    ),
    FontCjkDownloading => ("Downloading Chinese font… {percent}%", "正在下载中文字体… {percent}%"),
    FontCjkDownloadFailed => (
        "Chinese font download failed; the interface stays in English.",
        "中文字体下载失败，界面暂时保持英文。"
    ),
    FontCjkReady => ("Chinese font ready: {family}", "中文字体已就绪：{family}"),

    // ── 设置
    SettingsLanguage => ("Language", "界面语言"),
    SettingsLanguageHint => (
        "Switches the interface language. Chinese text needs a Chinese font.",
        "切换界面语言。显示中文需要中文字体。"
    ),

    // ── core / presenter 只给了中文串、UI 又不许画原文时的兜底（见 `bridge`）
    CoreTextUntranslated => ("[system text not translated]", "［未翻译的系统文案］"),

    // --- download page (M94) ---
    // 下载页（`crates/app-iced/src/pages/download`）。一句话一个 key：带变量的句子用 `{name}`，
    // 页面只做 `Catalog::render`，不拼片段（`bridge` 的规矩 1）。
    //
    // 文案口径（M94 r1 / P2-2）：**只说这个页面真能做到的动作**（切分类、刷新、看日志），
    // 不写「稍后会自动重试」这类 UI 没有的能力，也不拿文案去补功能。
    DownloadTitle => ("Downloads", "下载"),
    DownloadSubtitle => ("Versions you can install", "可以安装的版本"),
    DownloadRefresh => ("Refresh", "刷新"),
    DownloadInstall => ("Install", "安装"),
    DownloadCancel => ("Cancel install", "取消安装"),
    DownloadInstalled => ("Installed", "已安装"),
    DownloadCount => ("{count} versions", "{count} 个版本"),
    DownloadRowSupporting => ("{kind} · released {date}", "{kind} · 发布于 {date}"),
    DownloadSelectHint => ("Pick a version, then install", "选一个版本再安装"),
    DownloadLoading => ("Loading versions…", "正在加载版本列表…"),
    DownloadLoadingHint => (
        "If this stays here, press Refresh in the top right.",
        "如果一直停在这里，点右上角的刷新。"
    ),
    DownloadEmptyTitle => ("No versions to show", "没有可显示的版本"),
    DownloadEmptyBody => (
        "Pick another category, or refresh the list.",
        "换一个分类，或刷新一次列表。"
    ),
    DownloadCategoryAll => ("All", "全部"),
    DownloadCategoryRelease => ("Release", "正式版"),
    DownloadCategorySnapshot => ("Snapshot", "预览版"),
    DownloadCategoryAncient => ("Ancient", "远古版"),
    DownloadStagePlanning => ("Planning", "解析版本"),
    DownloadStageDownloading => ("Downloading files", "下载文件"),
    DownloadStageInstalling => ("Building the version", "生成版本"),
    DownloadStageRegistering => ("Registering the instance", "登记实例"),
    DownloadStageDone => ("Done", "已完成"),
    DownloadStageFailed => ("Install failed", "安装失败"),
    DownloadStageCancelled => ("Install cancelled", "安装已取消"),
    DownloadProgress => (
        "{done}/{total} files",
        "{done}/{total} 文件"
    ),
    DownloadProgressUnknown => ("Waiting for the first file…", "等第一个文件…"),
    // 速率与剩余时间是两个独立短语，各占一个 key（`DownloadRate` 只负责把它们排成一行）
    DownloadRate => ("{speed} · {eta}", "{speed}，{eta}"),
    DownloadEtaSecs => ("{secs}s left", "剩 {secs}s"),
    DownloadEtaMins => ("{mins}m{secs}s left", "剩 {mins}m{secs}s"),
    DownloadFailedHint => (
        "The Logs page has the full reason.",
        "完整原因在日志页。"
    ),
    DownloadOpenLogs => ("Open logs", "打开日志"),
    DownloadDismiss => ("Dismiss", "关闭"),
    // --- logs page (M95) ---
    // 日志页的**界面文案**（标题 / 按钮 / 分组名 / 空态）。诊断结论的正文不在这里：
    // 那是规则表 `rules.d/*.yaml` 的输出（数据），见 `pages/logs/diagnostic.rs` 的模块文档。
    // `LogsStatus` 是**模板**：中英差别落在分隔符上（中文用全角竖线——`·` 是外来符号，
    // 中文正文里偏挤；这也让「中文目录必须与英文不同」这条守卫成立，不是为过测试硬造差异）。
    LogsSubtitleIdle => ("Nothing is running right now", "当前没有运行中的实例"),
    LogsStatus => ("{instance} · {when} · {outcome}", "{instance}｜{when}｜{outcome}"),
    LogsOpenFolder => ("Open folder", "打开目录"),
    LogsClear => ("Clear", "清空"),
    LogsOutputTitle => ("OUTPUT", "输出"),
    LogsDiagnosisTitle => ("DIAGNOSIS", "诊断"),
    LogsConfidenceHigh => ("HIGH CONFIDENCE", "高置信度"),
    LogsConfidenceMedium => ("MEDIUM CONFIDENCE", "中置信度"),
    LogsConfidenceLow => ("LOW CONFIDENCE", "低置信度"),
    LogsSubtitleLive => ("Running now — logs stream as they arrive", "正在运行 — 日志实时滚动"),
    LogsConfidence => ("Confidence {percent}%", "置信度 {percent}%"),
    LogsSuggestedFix => ("Suggested fix", "建议动作"),
    LogsSummaryLabel => ("One-line summary", "一行摘要"),
    LogsCopySummary => ("Copy summary", "复制摘要"),
    LogsEmptyTitle => ("No output yet", "还没有输出"),
    LogsEmptyBody => (
        "Logs stream here while the launcher or the game is running. Pick an instance and start it to see the first lines.",
        "启动器或游戏运行时，日志会实时出现在这里。选择一个实例并启动，就能看到第一批日志。"
    ),
    LogsEmptyAction => ("Choose an instance", "选择实例"),
}

/// 一套语言的目录（不可变；`Copy`，随手传值）。
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
pub struct Catalog {
    lang: Lang,
    entries: &'static [(Key, &'static str)],
}

impl Catalog {
    /// 内置目录。
    #[must_use]
    pub const fn of(lang: Lang) -> Catalog {
        let entries: &'static [(Key, &'static str)] = match lang {
            Lang::En => EN,
            Lang::ZhCn => ZH_CN,
        };
        Catalog { lang, entries }
    }

    /// 用外部表构造目录（给后续 mission 的第三套语言 / 测试注入用）。
    #[must_use]
    pub const fn from_entries(lang: Lang, entries: &'static [(Key, &'static str)]) -> Catalog {
        Catalog { lang, entries }
    }

    /// 这套目录是哪种语言。
    #[must_use]
    pub const fn lang(&self) -> Lang {
        self.lang
    }

    /// 严格取词：缺译就是 `None`（**不回落**到别的语言）。
    #[must_use]
    pub fn get(&self, key: Key) -> Option<&'static str> {
        self.entries
            .iter()
            .find(|(entry, _)| *entry == key)
            .map(|(_, text)| *text)
    }

    /// 这套目录的全部条目（声明顺序）。给导出 / 校对工具与完整性守门测试用。
    #[must_use]
    pub const fn entries(&self) -> &'static [(Key, &'static str)] {
        self.entries
    }

    /// 取词（UI 便利路径）：缺译返回 [`MISSING`]。
    #[must_use]
    pub fn text(&self, key: Key) -> &'static str {
        self.get(key).unwrap_or(MISSING)
    }

    /// 带变量的句子：把 `{name}` 换掉。
    ///
    /// 参数没给全时**占位符原样留在文案里**（`Launch failed (exit {code})`），不 panic、不猜空串——
    /// 缺参在截图上一眼可见，比静默变成 `exit ` 好查。
    #[must_use]
    pub fn render(&self, key: Key, args: &[(&str, &str)]) -> String {
        let Some(template) = self.get(key) else {
            return format!("⟪missing:{}⟫", key.name());
        };

        let mut out = template.to_owned();
        for (name, value) in args {
            out = out.replace(&format!("{{{name}}}"), value);
        }
        out
    }

    /// 缺译的 key（自带语言里从来是空；注入目录与回归守门才用得上）。
    #[must_use]
    pub fn missing(&self) -> Vec<Key> {
        Key::ALL
            .iter()
            .copied()
            .filter(|key| self.get(*key).is_none())
            .collect()
    }

    /// 人话诊断（`None` = 没有缺译）。一条缺译一行，附带英文原文当参考。
    #[must_use]
    pub fn diagnose(&self) -> Option<String> {
        let missing = self.missing();
        if missing.is_empty() {
            return None;
        }

        let mut out = format!("{} 缺 {} 条译文：", self.lang.tag(), missing.len());
        for key in missing {
            let reference = Catalog::of(Lang::En)
                .get(key)
                .map_or_else(|| "<en 也缺>".to_owned(), |text| format!("\"{text}\""));
            out.push_str(&format!("\n  - {} · en={reference}", key.name()));
        }
        Some(out)
    }
}

/// 抽取文案里的 `{name}` 占位符（守门测试用：同一 key 的两套译文占位符必须一致）。
#[must_use]
pub fn placeholders(text: &str) -> Vec<&str> {
    let mut found = Vec::new();
    let mut rest = text;
    while let Some(open) = rest.find('{') {
        let after = &rest[open + 1..];
        let Some(close) = after.find('}') else {
            break;
        };
        found.push(&after[..close]);
        rest = &after[close + 1..];
    }
    found
}
#[cfg(test)]
mod tests;