build iOS study scaffold

2026-04-09 15:39:32 +02:00
parent 87f152a232
commit 5c0aa9542a
12 changed files with 723 additions and 46 deletions
@@ -1,18 +1,62 @@
+import Combine
 import Foundation

-final class LocalizationStore {
+@MainActor
+final class LocalizationStore: ObservableObject {
+    @Published private(set) var localeCode: String
+
    private let bundle: Bundle

-    init(bundle: Bundle = .main) {
+    private static let supportedLocaleCodes = ["en", "sv"]
+    private static let fallbackLocaleCode = "en"
+
+    init(bundle: Bundle = .main, localeCode: String = Locale.preferredLanguages.first.map { String($0.prefix(2)) } ?? "en") {
        self.bundle = bundle
+        self.localeCode = Self.normalize(localeCode)
    }

-    func string(for key: String, locale: String) -> String {
-        guard let path = bundle.path(forResource: locale, ofType: "lproj"),
-              let localizedBundle = Bundle(path: path) else {
-            return bundle.localizedString(forKey: key, value: nil, table: nil)
+    func setLocale(_ localeCode: String) {
+        self.localeCode = Self.normalize(localeCode)
+    }
+
+    func string(for key: String) -> String {
+        string(for: key, localeCode: localeCode)
+    }
+
+    func string(for key: String, localeCode: String) -> String {
+        guard let localizedBundle = localizedBundle(for: localeCode) else {
+            return fallbackString(for: key, localeCode: localeCode)
        }

-        return localizedBundle.localizedString(forKey: key, value: nil, table: nil)
+        let value = localizedBundle.localizedString(forKey: key, value: nil, table: nil)
+        if value == key {
+            return fallbackString(for: key, localeCode: localeCode)
+        }
+
+        return value
+    }
+
+    private func fallbackString(for key: String, localeCode: String) -> String {
+        guard localeCode != Self.fallbackLocaleCode else {
+            return key
+        }
+
+        return string(for: key, localeCode: Self.fallbackLocaleCode)
+    }
+
+    private func localizedBundle(for localeCode: String) -> Bundle? {
+        guard let path = bundle.path(forResource: localeCode, ofType: "lproj") else {
+            return nil
+        }
+
+        return Bundle(path: path)
+    }
+
+    private static func normalize(_ localeCode: String) -> String {
+        guard supportedLocaleCodes.contains(localeCode) else {
+            return fallbackLocaleCode
+        }
+
+        return localeCode
    }
 }