Add Chinese (Simplified) localization

YoutubeDownloader/Localization/Language.cs

@@ -8,4 +8,5 @@ public enum Language
     German,
     French,
     Spanish,
+    ChineseSimplified,
 }

YoutubeDownloader/Localization/LocalizationManager.ChineseSimplified.cs

@@ -0,0 +1,126 @@
+using System.Collections.Generic;
+
+namespace YoutubeDownloader.Localization;
+
+public partial class LocalizationManager
+{
+    private static readonly IReadOnlyDictionary<string, string> ChineseSimplifiedLocalization =
+        new Dictionary<string, string>
+        {
+            // Dashboard
+            [nameof(QueryWatermark)] = "粘贴链接或搜索",
+            [nameof(QueryTooltip)] =
+                "接受任何有效的 YouTube 网页链接或视频 ID。在开头添加问号 (?) 可进行文本搜索。",
+            [nameof(ProcessQueryTooltip)] = "开始查询 (Enter)",
+            [nameof(AuthTooltip)] = "身份验证",
+            [nameof(SettingsTooltip)] = "设置",
+            [nameof(DashboardPlaceholder)] = """
+                复制并粘贴 **网页链接** 或 **搜索** 以开始下载
+                使用 **Shift+Enter** 可添加多个项目
+                """,
+            [nameof(DownloadsFileColumnHeader)] = "文件",
+            [nameof(DownloadsStatusColumnHeader)] = "状态",
+            [nameof(ContextMenuRemoveSuccessful)] = "移除已完成的下载",
+            [nameof(ContextMenuRemoveInactive)] = "移除未激活的下载",
+            [nameof(ContextMenuRestartFailed)] = "重下失败的下载",
+            [nameof(ContextMenuCancelAll)] = "取消所有下载",
+            [nameof(DownloadStatusEnqueued)] = "正在排队...",
+            [nameof(DownloadStatusCompleted)] = "已完成",
+            [nameof(DownloadStatusCanceled)] = "已取消",
+            [nameof(DownloadStatusFailed)] = "失败",
+            [nameof(ClickToCopyErrorTooltip)] = "提示：点击可复制此错误信息",
+            [nameof(ShowFileTooltip)] = "显示文件",
+            [nameof(PlayTooltip)] = "播放",
+            [nameof(CancelDownloadTooltip)] = "取消下载",
+            [nameof(RestartDownloadTooltip)] = "重新下载",
+            // Settings
+            [nameof(SettingsTitle)] = "设置",
+            [nameof(ThemeLabel)] = "主题",
+            [nameof(ThemeTooltip)] = "首选的用户界面主题",
+            [nameof(LanguageLabel)] = "语言",
+            [nameof(LanguageTooltip)] = "首选的用户界面显示语言",
+            [nameof(AutoUpdateLabel)] = "自动更新",
+            [nameof(AutoUpdateTooltip)] = """
+                每次启动时执行自动更新。
+                **警告：** 建议保持此选项启用，以确保应用程序与最新版本的 YouTube 兼容。
+                """,
+            [nameof(PersistAuthLabel)] = "持久化身份验证",
+            [nameof(PersistAuthTooltip)] = """
+                将身份验证 Cookie 保存到文件中，以便在不同会话之间持久化。
+                **警告：** 尽管 Cookie 是加密存储的，但拥有系统访问权限的攻击者仍可能恢复它们。
+                """,
+            [nameof(InjectAltLanguagesLabel)] = "注入多音轨",
+            [nameof(InjectAltLanguagesTooltip)] =
+                "将替代语言的音频轨道（如果可用）注入到下载的文件中",
+            [nameof(InjectSubtitlesLabel)] = "注入字幕",
+            [nameof(InjectSubtitlesTooltip)] = "将字幕（如果可用）注入到下载的文件中",
+            [nameof(InjectTagsLabel)] = "注入媒体标签",
+            [nameof(InjectTagsTooltip)] = "将媒体标签（如果可用）注入到下载的文件中",
+            [nameof(SkipExistingFilesLabel)] = "跳过已存在的文件",
+            [nameof(SkipExistingFilesTooltip)] =
+                "下载多个视频时，跳过输出目录中已存在匹配文件的视频",
+            [nameof(FileNameTemplateLabel)] = "文件名模板",
+            [nameof(FileNameTemplateTooltip)] = """
+                用于生成下载视频文件名的模板。
+
+                可用标记：
+                **$num** — 视频在列表中的位置（如果适用）
+                **$id** — 视频 ID
+                **$title** — 视频标题
+                **$author** — 视频作者
+                """,
+            [nameof(ParallelLimitLabel)] = "并行下载限制",
+            [nameof(ParallelLimitTooltip)] = "允许同时进行的下载任务数量",
+            [nameof(FFmpegPathLabel)] = "FFmpeg 路径",
+            [nameof(FFmpegPathTooltip)] = "FFmpeg 可执行文件的路径。留空则使用自动检测。",
+            [nameof(FFmpegPathWatermark)] = "自动检测",
+            [nameof(FFmpegPathResetTooltip)] = "重置为自动检测",
+            [nameof(FFmpegPathBrowseTooltip)] = "浏览 FFmpeg 可执行文件",
+            // Auth Setup
+            [nameof(AuthenticationTitle)] = "身份验证",
+            [nameof(AuthenticatedText)] = "你当前已通过身份验证",
+            [nameof(LogOutButton)] = "退出登录",
+            [nameof(LoadingText)] = "正在加载...",
+            // Download Single Setup
+            [nameof(CopyMenuItem)] = "复制",
+            [nameof(LiveLabel)] = "直播",
+            [nameof(AudioLabel)] = "音频",
+            [nameof(FormatLabel)] = "格式",
+            // Download Multiple Setup
+            [nameof(ContainerLabel)] = "封装格式",
+            [nameof(VideoQualityLabel)] = "视频质量",
+            // Common buttons
+            [nameof(CloseButton)] = "关闭",
+            [nameof(DownloadButton)] = "下载",
+            [nameof(CancelButton)] = "取消",
+            // Dialog messages
+            [nameof(UkraineSupportTitle)] = "感谢你支持乌克兰！",
+            [nameof(UkraineSupportMessage)] = """
+                由于俄罗斯正对我的国家发动一场种族灭绝战争，我向所有在我们的自由之战中继续支持乌克兰的人表示感谢。
+
+                点击“了解更多”以寻找你可以提供帮助的途径。
+                """,
+            [nameof(LearnMoreButton)] = "了解更多",
+            [nameof(UnstableBuildTitle)] = "不稳定版本警告",
+            [nameof(UnstableBuildMessage)] = """
+                你正在使用 {0} 的开发版本。这些版本未经严格测试，可能包含漏洞。
+
+                开发版本已禁用自动更新。
+
+                如果你想下载稳定版本，请点击“查看发布版本”。
+                """,
+            [nameof(SeeReleasesButton)] = "查看发布版本",
+            [nameof(FFmpegMissingTitle)] = "缺少 FFmpeg",
+            [nameof(FFmpegMissingMessage)] =
+                "系统中未找到 FFmpeg。{0} 需要它才能正常工作。是否立即下载？",
+            [nameof(FFmpegDownloadingTitle)] = "正在下载 FFmpeg...",
+            [nameof(FFmpegDownloadCompletedTitle)] = "FFmpeg 下载完成",
+            [nameof(NothingFoundTitle)] = "未找到内容",
+            [nameof(NothingFoundMessage)] = "无法根据你提供的查询或 URL 找到任何视频",
+            [nameof(ErrorTitle)] = "错误",
+            [nameof(UpdateDownloadingMessage)] = "正在下载更新至 {0} v{1}...",
+            [nameof(UpdateReadyMessage)] = "更新已下载，将在你退出时安装",
+            [nameof(UpdateInstallNowButton)] = "立即安装",
+            [nameof(UpdateFailedMessage)] = "应用程序更新失败",
+        };
+}

YoutubeDownloader/Localization/LocalizationManager.cs

@@ -36,21 +36,30 @@ private string Get([CallerMemberName] string? key = null)
         if (string.IsNullOrWhiteSpace(key))
             return string.Empty;
 
+        var currentUiCulture = CultureInfo.CurrentUICulture;
+
         var localization = Language switch
         {
             Language.System =>
-                CultureInfo.CurrentUICulture.ThreeLetterISOLanguageName.ToLowerInvariant() switch
-                {
-                    "ukr" => UkrainianLocalization,
-                    "deu" => GermanLocalization,
-                    "fra" => FrenchLocalization,
-                    "spa" => SpanishLocalization,
-                    _ => EnglishLocalization,
-                },
+                currentUiCulture.TwoLetterISOLanguageName.Equals("zh", StringComparison.OrdinalIgnoreCase)
+                && (
+                    currentUiCulture.Name.StartsWith("zh-Hans", StringComparison.OrdinalIgnoreCase)
+                    || currentUiCulture.Name.StartsWith("zh-CN", StringComparison.OrdinalIgnoreCase)
+                )
+                    ? ChineseSimplifiedLocalization
+                    : currentUiCulture.ThreeLetterISOLanguageName.ToLowerInvariant() switch
+                    {
+                        "ukr" => UkrainianLocalization,
+                        "deu" => GermanLocalization,
+                        "fra" => FrenchLocalization,
+                        "spa" => SpanishLocalization,
+                        _ => EnglishLocalization,
+                    },
             Language.Ukrainian => UkrainianLocalization,
             Language.German => GermanLocalization,
             Language.French => FrenchLocalization,
             Language.Spanish => SpanishLocalization,
+            Language.ChineseSimplified => ChineseSimplifiedLocalization,
             _ => EnglishLocalization,
         };