Let agents show and drive Page view tabs on the iPhone

mac/Sources/Byre/API.swift

@@ -118,6 +118,7 @@ final class API: Sendable {
         config.httpAdditionalHeaders = [
             "Byre-Client": clientID,
             "Byre-Commit": Bundle.main.object(forInfoDictionaryKey: "ByreCommit") as! String,
+            "Byre-Device": deviceKind,
             "Byre-Host": deviceName,
         ]
         config.proxyConfigurations = [tailnetNode.proxy()]

mac/Sources/Byre/Pages.swift

@@ -278,6 +278,17 @@ final class Pages {
         }
         return png
     }
+    #else
+    func capture(_ view: WKWebView) async throws -> Data {
+        guard view.window != nil, !view.isHidden else {
+            throw ApiError(status: 0, message: "the tab isn't on screen: the human has the page view closed or another tab showing")
+        }
+        let image = try await view.takeSnapshot(configuration: nil)
+        guard let png = image.pngData() else {
+            throw ApiError(status: 0, message: "couldn't encode the capture as PNG")
+        }
+        return png
+    }
     #endif
 
     func close() {

mac/Sources/Byre/Remote.swift

@@ -7,12 +7,13 @@ typealias ClientRequest = Components.Schemas.ClientRequest
 typealias ClientReply = Components.Schemas.ClientReply
 typealias ClientSync = Components.Schemas.ClientSync
 
-#if os(macOS)
 private let retryAfter = Duration.seconds(2)
 private let checkEvery = Duration.seconds(10)
 private let staleAfter: TimeInterval = 25
-private let maxOutput = 64 << 10
 private let maxMessage = 256 << 20
+
+#if os(macOS)
+private let maxOutput = 64 << 10
 private let maxRead = 64 << 20
 private let copyTimeoutMs = 10 * 60 * 1000
 private let hands = Hands()
@@ -27,6 +28,7 @@ private let signScript = """
     esac
     exec "$program" --status-fd=2 -bsau "$(git config user.signingkey || echo "$1")" >"$2"
     """
+#endif
 
 @MainActor
 final class Remote {
@@ -157,6 +159,10 @@ final class Remote {
 
     private func perform(_ req: ClientRequest) async throws -> ClientReply {
         switch req.op {
+        #if os(iOS)
+        case .bash, .exec, .upload, .download, .readFile, .writeFile, .hands, .sign:
+            throw ApiError(status: 0, message: "an iPhone only shows and drives pages and files in byre's app (show_page, show_file, drive_page)")
+        #else
         case .bash:
             let home = FileManager.default.homeDirectoryForCurrentUser.path
             let (code, output) = try await spawn(["/bin/zsh", "-l", "-c", req.command ?? ""], in: home, timeoutMs: req.timeoutMs ?? 120_000)
@@ -190,6 +196,7 @@ final class Remote {
         case .sign:
             let (code, status, signature) = try await sign(Data(req.data?.data ?? []), as: req.ident ?? "", timeoutMs: req.timeoutMs ?? 120_000)
             return ClientReply(id: req.id, exitCode: code, output: status, data: Base64EncodedData(signature))
+        #endif
         case .openPage:
             if let address = req.url {
                 guard let url = URL(string: address) else {
@@ -219,6 +226,7 @@ final class Remote {
         }
     }
 
+    #if os(macOS)
     private func sign(_ payload: Data, as ident: String, timeoutMs: Int) async throws -> (Int, String, Data) {
         let fm = FileManager.default
         let dir = fm.temporaryDirectory.appending(path: "byre-sign-\(UUID().uuidString)", directoryHint: .isDirectory)
@@ -293,8 +301,10 @@ final class Remote {
         }
         try fm.moveItem(at: entries[0], to: target)
     }
+    #endif
 }
 
+#if os(macOS)
 private func expand(_ path: String) -> URL {
     URL(filePath: (path as NSString).expandingTildeInPath)
 }

mac/Sources/Byre/Startup.swift

@@ -254,13 +254,7 @@ final class Connection {
             store.startGlobalStream(after: status.lastEventSeq) { [weak self] in
                 self?.reconnected(status.startedAt)
             }
-            #if os(macOS)
             store.remote.start()
-            #else
-            if let sync = Servers.shared.sync {
-                store.reportSync(sync)
-            }
-            #endif
             forwards.sync(store.api, Set(store.activeTasks().map(\.task.id)))
             Notifier.shared.deliver()
             return true

mac/Sources/Byre/Store.swift

@@ -89,9 +89,7 @@ final class Store {
     let imageCache = ImageCache()
     let events = Listeners<ByreEvent>()
     let paneFocus: PaneFocus
-    #if os(macOS)
     let remote: Remote
-    #endif
     let forwards: Forwards
     let pages: Pages
 
@@ -115,10 +113,8 @@ final class Store {
         self.pages = pages
         leadFeed = Feed(shown: { true })
         paneFocus = PaneFocus(api: api)
-        #if os(macOS)
         remote = Remote(api: api)
         remote.store = self
-        #endif
         pages.popup = { [weak self] page in
             self?.openPage(page)
         }
@@ -144,9 +140,7 @@ final class Store {
         stopped = true
         globalStream?.stop()
         leadStream?.stop()
-        #if os(macOS)
         remote.stop()
-        #endif
         drafts?.flush()
         await paneFocus.leave()
     }