feat(apple/M0): App Group + PunktfunkShared + punktfunk:// deep links

Foundation milestone for Live Activities & Widgets (design/apple-live- activities-and-widgets.md). No user-visible change beyond the URL scheme. - New dependency-free PunktfunkShared SwiftPM target (+ library product) so a future widget extension can link it WITHOUT PunktfunkKit (Rust staticlib + presentation layer). Moves StoredHost (model + JSON codec), DefaultsKeys, and punktfunkDefaultMgmtPort there; adds AppGroup.suiteName and the punktfunk:// DeepLink builder/parser. PunktfunkKit @_exported-imports it (no call-site churn for consumers; intra-Kit files import it explicitly since imports are file-scoped). - HostStore reads/writes the shared App-Group suite (group.io.unom.punktfunk) with a one-time migration from UserDefaults.standard (old value left in place for staged rollout); reloads the "PunktfunkHosts" widget timeline on change. - App Group entitlement on iOS/tvOS + macOS. - CFBundleURLTypes scheme `punktfunk`; ContentView.onOpenURL routes connect/<uuid>[?launch=<GameEntry.id>] into the existing connect() path (unknown host / already-streaming guards; never tears down a live session). - Round-trip tests: StoredHost JSON codec (+ legacy missing-optional decode), DeepLink grammar. `swift build` + `swift test` green (142 tests, 0 failures). Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-07-16 18:16:39 +02:00
parent b45323c0be
commit 4cae1b8bb8
22 changed files with 371 additions and 35 deletions
@@ -0,0 +1,57 @@
+// The `punktfunk://` deep-link grammar — the single builder/parser shared by the widget (which
+// emits links via `widgetURL`/`Link`) and the app (`ContentView.onOpenURL`, which routes them into
+// the existing connect path). Keeping both sides on one type means the wire format can't drift.
+//
+// Grammar (v1):
+//   punktfunk://connect/<host-uuid>                       — connect to a stored host
+//   punktfunk://connect/<host-uuid>?launch=<GameEntry.id> — connect and ask the host to launch it
+//
+// `launch` carries a `GameEntry.id` (e.g. "steam:570"); it is percent-encoded on build and decoded
+// on parse, so ids with reserved characters survive the round trip.
+
+import Foundation
+
+public enum DeepLink: Equatable {
+    /// Connect to a saved host; `launchID` is a `GameEntry.id` to launch on arrival, if any.
+    case connect(host: UUID, launchID: String?)
+
+    public static let scheme = "punktfunk"
+
+    /// Build the canonical URL for a route. Non-optional: every route is representable.
+    public var url: URL {
+        switch self {
+        case let .connect(host, launchID):
+            var comps = URLComponents()
+            comps.scheme = Self.scheme
+            comps.host = "connect"
+            comps.path = "/\(host.uuidString)"
+            if let launchID, !launchID.isEmpty {
+                comps.queryItems = [URLQueryItem(name: "launch", value: launchID)]
+            }
+            // URLComponents percent-encodes the query value; force-unwrap is safe for a URL we
+            // fully control (scheme/host/path are all valid).
+            return comps.url!
+        }
+    }
+
+    /// Parse an incoming URL, or nil if it isn't a recognized `punktfunk://` route. Tolerant of
+    /// case in the scheme and of a trailing slash on the path.
+    public init?(_ url: URL) {
+        guard url.scheme?.lowercased() == Self.scheme else { return nil }
+        guard let comps = URLComponents(url: url, resolvingAgainstBaseURL: false) else { return nil }
+
+        switch comps.host?.lowercased() {
+        case "connect":
+            // Path is "/<uuid>"; strip the leading slash and any trailing one.
+            let raw = comps.path
+                .trimmingCharacters(in: CharacterSet(charactersIn: "/"))
+            guard let host = UUID(uuidString: raw) else { return nil }
+            let launch = comps.queryItems?
+                .first(where: { $0.name == "launch" })?.value
+                .flatMap { $0.isEmpty ? nil : $0 }
+            self = .connect(host: host, launchID: launch)
+        default:
+            return nil
+        }
+    }
+}