Add automatic language mode and localized help menu

Ariver

2026-05-24 d13e673115da89982bc29d1868b022afc062b801

 Apptag/L10n.swift

@@ -7,6 +7,7 @@
}

enum L10n {
    static let automaticCode = "auto"
    static var current: [String: String] = [:]
    private(set) static var currentCode = "en"

@@ -48,13 +49,52 @@
        ("sv", "Svenska"),
    ]

    static var selectedLanguageCode: String {
        UserDefaults.standard.string(forKey: "appLanguage") ?? automaticCode
    }

    static var isAutomatic: Bool {
        UserDefaults.standard.string(forKey: "appLanguage") == nil
    }

    static func switchSelection(to code: String) {
        if code == automaticCode {
            switchToAutomatic()
        } else {
            switchTo(code)
        }
    }

    static func switchToAutomatic() {
        let code = fallbackCode()
        let previousCode = currentCode
        load(code)
        UserDefaults.standard.removeObject(forKey: "appLanguage")
        let relocalizedTags = previousCode != currentCode
            ? TagDatabase.relocalizeSystemTagsForCurrentLanguage()
            : false
        NotificationCenter.default.post(
            name: .appLanguageDidChange,
            object: nil,
            userInfo: ["code": automaticCode, "effectiveCode": currentCode]
        )
        if relocalizedTags {
            NotificationCenter.default.post(name: .tagLauncherDataDidChange, object: nil)
        }
    }

    static func switchTo(_ code: String) {
        guard supported.contains(where: { $0.code == code }) else { return }
        guard code != currentCode else { return }
        let previousSelection = selectedLanguageCode
        guard code != currentCode || previousSelection == automaticCode else { return }
        load(code)
        let relocalizedTags = TagDatabase.relocalizeSystemTagsForCurrentLanguage()
        UserDefaults.standard.set(code, forKey: "appLanguage")
        NotificationCenter.default.post(name: .appLanguageDidChange, object: nil, userInfo: ["code": currentCode])
        NotificationCenter.default.post(
            name: .appLanguageDidChange,
            object: nil,
            userInfo: ["code": currentCode, "effectiveCode": currentCode]
        )
        if relocalizedTags {
            NotificationCenter.default.post(name: .tagLauncherDataDidChange, object: nil)
        }
@@ -87,7 +127,7 @@
        currentCode = code
    }

    private static func fallbackCode() -> String {
    static func fallbackCode() -> String {
        let lang = Locale.preferredLanguages.first ?? "en"
        if lang.hasPrefix("zh-Hant") || lang.hasPrefix("zh-HK") || lang.hasPrefix("zh-TW") { return "zh-Hant" }
        if lang.hasPrefix("zh") { return "zh-Hans" }
@@ -124,3 +164,24 @@
func tr(_ key: String) -> String {
    L10n.current[key] ?? key
}

enum HelpDocument {
    private static let baseURL = "https://github.com/shanghai3168/taglauncher/releases/download/v7.6.0"

    static var currentURL: URL {
        URL(string: "\(baseURL)/Taglauncher-help-\(languageCode(for: L10n.currentCode)).pdf")!
    }

    private static func languageCode(for appLanguageCode: String) -> String {
        switch appLanguageCode {
        case "zh-Hans": return "zh"
        case "zh-Hant": return "zh-Hant"
        case "en", "ar", "ar-Najdi", "cs", "da", "de", "es", "fr", "id",
             "it", "ja", "ko", "ms", "nb", "nl", "nn", "no", "pl", "pt-BR",
             "ro", "ru", "sr-Cyrl", "sv", "th", "tr", "uk", "vi":
            return appLanguageCode
        default:
            return "en"
        }
    }
}