Add a SwiftUI iOS app that plays the same maturita content.

Co-authored-by: Cursor <cursoragent@cursor.com>

ios/Maturita/Data/Content.swift

@@ -0,0 +1,95 @@
+import Foundation
+
+enum AppConfig {
+    static var commit: String {
+        let raw = (Bundle.main.object(forInfoDictionaryKey: "GITCommit") as? String)?
+            .trimmingCharacters(in: .whitespacesAndNewlines) ?? ""
+        return raw.isEmpty || raw.hasPrefix("$(") ? "dev" : raw
+    }
+
+    static var versionName: String {
+        Bundle.main.infoDictionary?["CFBundleShortVersionString"] as? String ?? "ios-1"
+    }
+
+    static var updateRepo: String {
+        (Bundle.main.object(forInfoDictionaryKey: "UPDATE_REPO") as? String)
+            ?? "pepaskopec-blip/maturita.c"
+    }
+
+    static var updateBranch: String {
+        (Bundle.main.object(forInfoDictionaryKey: "UPDATE_BRANCH") as? String) ?? "builds"
+    }
+}
+
+final class Content {
+    let raw: J
+    let i18n: [String: (String?, String?)]
+    let subjects: [J]
+    let german: [J]
+    let net: J
+    let netLessons: [J]
+    let netTasks: [J]
+    let netAnswers: [[J]]
+    let hw: [J]
+    let mluvnice: [J]
+    let books: [J]
+
+    init(_ root: [String: Any]) {
+        raw = J(root)
+        let obj = root["i18n"] as? [String: Any] ?? [:]
+        var map: [String: (String?, String?)] = [:]
+        for (key, value) in obj {
+            let e = J(value)
+            let cs = e.strOrNull("cs")
+            let en = e.strOrNull("en")
+            map[key] = (cs, en)
+        }
+        i18n = map
+        subjects = raw.arr("subjects")
+        german = raw.arr("german")
+        net = raw.obj("net") ?? J([:])
+        netLessons = net.arr("lessons")
+        netTasks = net.arr("tasks")
+        if let a = net.o["answers"] as? [Any] {
+            netAnswers = a.map { block in
+                guard let rows = block as? [Any] else { return [] }
+                return rows.compactMap { item in
+                    item is [String: Any] ? J(item) : nil
+                }
+            }
+        } else {
+            netAnswers = []
+        }
+        hw = raw.arr("hw")
+        mluvnice = raw.arr("mluvnice")
+        books = raw.arr("books")
+    }
+
+    func germanUnit(_ id: Int) -> J? { german.first { $0.int("id") == id } }
+    func netLesson(_ id: Int) -> J? { netLessons.first { $0.int("id") == id } }
+    func hwLesson(_ id: Int) -> J? { hw.first { $0.int("id") == id } }
+    func mluv(_ n: Int) -> J? { mluvnice.first { $0.int("id") == n } }
+    func book(_ id: String) -> J? { books.first { $0.str("id") == id } }
+
+    func tr(_ key: String?, lang: UiLang) -> String {
+        guard let key, !key.isEmpty else { return "" }
+        let hit = i18n[key]
+        if lang == .en { return hit?.1 ?? key }
+        return hit?.0 ?? key
+    }
+
+    func fmt(_ key: String, lang: UiLang, _ args: [CVarArg]) -> String {
+        let template = tr(key, lang: lang).replacingOccurrences(of: "%s", with: "%@")
+        return String(format: template, arguments: args)
+    }
+
+    static func load() -> Content {
+        guard let url = Bundle.main.url(forResource: "content", withExtension: "json"),
+              let data = try? Data(contentsOf: url),
+              let obj = try? JSONSerialization.jsonObject(with: data) as? [String: Any]
+        else {
+            return Content([:])
+        }
+        return Content(obj)
+    }
+}