335 lines
12 KiB
Swift
335 lines
12 KiB
Swift
import AppKit
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import ClawdbotKit
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import ClawdbotProtocol
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import Foundation
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import Observation
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import OSLog
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@MainActor
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@Observable
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final class DevicePairingApprovalPrompter {
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static let shared = DevicePairingApprovalPrompter()
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private let logger = Logger(subsystem: "com.clawdbot", category: "device-pairing")
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private var task: Task<Void, Never>?
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private var isStopping = false
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private var isPresenting = false
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private var queue: [PendingRequest] = []
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var pendingCount: Int = 0
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var pendingRepairCount: Int = 0
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private var activeAlert: NSAlert?
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private var activeRequestId: String?
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private var alertHostWindow: NSWindow?
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private var resolvedByRequestId: Set<String> = []
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private final class AlertHostWindow: NSWindow {
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override var canBecomeKey: Bool { true }
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override var canBecomeMain: Bool { true }
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}
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private struct PairingList: Codable {
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let pending: [PendingRequest]
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let paired: [PairedDevice]?
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}
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private struct PairedDevice: Codable, Equatable {
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let deviceId: String
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let approvedAtMs: Double?
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let displayName: String?
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let platform: String?
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let remoteIp: String?
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}
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private struct PendingRequest: Codable, Equatable, Identifiable {
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let requestId: String
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let deviceId: String
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let publicKey: String
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let displayName: String?
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let platform: String?
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let clientId: String?
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let clientMode: String?
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let role: String?
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let scopes: [String]?
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let remoteIp: String?
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let silent: Bool?
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let isRepair: Bool?
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let ts: Double
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var id: String { self.requestId }
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}
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private struct PairingResolvedEvent: Codable {
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let requestId: String
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let deviceId: String
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let decision: String
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let ts: Double
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}
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private enum PairingResolution: String {
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case approved
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case rejected
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}
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func start() {
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guard self.task == nil else { return }
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self.isStopping = false
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self.task = Task { [weak self] in
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guard let self else { return }
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_ = try? await GatewayConnection.shared.refresh()
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await self.loadPendingRequestsFromGateway()
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let stream = await GatewayConnection.shared.subscribe(bufferingNewest: 200)
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for await push in stream {
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if Task.isCancelled { return }
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await MainActor.run { [weak self] in self?.handle(push: push) }
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}
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}
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}
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func stop() {
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self.isStopping = true
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self.endActiveAlert()
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self.task?.cancel()
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self.task = nil
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self.queue.removeAll(keepingCapacity: false)
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self.updatePendingCounts()
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self.isPresenting = false
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self.activeRequestId = nil
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self.alertHostWindow?.orderOut(nil)
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self.alertHostWindow?.close()
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self.alertHostWindow = nil
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self.resolvedByRequestId.removeAll(keepingCapacity: false)
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}
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private func loadPendingRequestsFromGateway() async {
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do {
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let list: PairingList = try await GatewayConnection.shared.requestDecoded(method: .devicePairList)
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await self.apply(list: list)
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} catch {
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self.logger.error("failed to load device pairing requests: \(error.localizedDescription, privacy: .public)")
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}
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}
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private func apply(list: PairingList) async {
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self.queue = list.pending.sorted(by: { $0.ts > $1.ts })
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self.updatePendingCounts()
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self.presentNextIfNeeded()
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}
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private func updatePendingCounts() {
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self.pendingCount = self.queue.count
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self.pendingRepairCount = self.queue.count(where: { $0.isRepair == true })
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}
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private func presentNextIfNeeded() {
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guard !self.isStopping else { return }
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guard !self.isPresenting else { return }
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guard let next = self.queue.first else { return }
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self.isPresenting = true
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self.presentAlert(for: next)
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}
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private func presentAlert(for req: PendingRequest) {
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self.logger.info("presenting device pairing alert requestId=\(req.requestId, privacy: .public)")
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NSApp.activate(ignoringOtherApps: true)
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let alert = NSAlert()
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alert.alertStyle = .warning
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alert.messageText = "Allow device to connect?"
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alert.informativeText = Self.describe(req)
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alert.addButton(withTitle: "Later")
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alert.addButton(withTitle: "Approve")
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alert.addButton(withTitle: "Reject")
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if #available(macOS 11.0, *), alert.buttons.indices.contains(2) {
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alert.buttons[2].hasDestructiveAction = true
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}
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self.activeAlert = alert
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self.activeRequestId = req.requestId
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let hostWindow = self.requireAlertHostWindow()
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let sheetSize = alert.window.frame.size
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if let screen = hostWindow.screen ?? NSScreen.main {
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let bounds = screen.visibleFrame
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let x = bounds.midX - (sheetSize.width / 2)
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let sheetOriginY = bounds.midY - (sheetSize.height / 2)
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let hostY = sheetOriginY + sheetSize.height - hostWindow.frame.height
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hostWindow.setFrameOrigin(NSPoint(x: x, y: hostY))
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} else {
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hostWindow.center()
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}
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hostWindow.makeKeyAndOrderFront(nil)
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alert.beginSheetModal(for: hostWindow) { [weak self] response in
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Task { @MainActor [weak self] in
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guard let self else { return }
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self.activeRequestId = nil
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self.activeAlert = nil
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await self.handleAlertResponse(response, request: req)
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hostWindow.orderOut(nil)
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}
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}
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}
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private func handleAlertResponse(_ response: NSApplication.ModalResponse, request: PendingRequest) async {
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var shouldRemove = response != .alertFirstButtonReturn
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defer {
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if shouldRemove {
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if self.queue.first == request {
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self.queue.removeFirst()
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} else {
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self.queue.removeAll { $0 == request }
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}
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}
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self.updatePendingCounts()
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self.isPresenting = false
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self.presentNextIfNeeded()
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}
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guard !self.isStopping else { return }
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if self.resolvedByRequestId.remove(request.requestId) != nil {
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return
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}
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switch response {
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case .alertFirstButtonReturn:
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shouldRemove = false
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if let idx = self.queue.firstIndex(of: request) {
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self.queue.remove(at: idx)
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}
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self.queue.append(request)
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return
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case .alertSecondButtonReturn:
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_ = await self.approve(requestId: request.requestId)
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case .alertThirdButtonReturn:
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await self.reject(requestId: request.requestId)
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default:
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return
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}
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}
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private func approve(requestId: String) async -> Bool {
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do {
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try await GatewayConnection.shared.devicePairApprove(requestId: requestId)
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self.logger.info("approved device pairing requestId=\(requestId, privacy: .public)")
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return true
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} catch {
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self.logger.error("approve failed requestId=\(requestId, privacy: .public)")
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self.logger.error("approve failed: \(error.localizedDescription, privacy: .public)")
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return false
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}
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}
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private func reject(requestId: String) async {
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do {
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try await GatewayConnection.shared.devicePairReject(requestId: requestId)
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self.logger.info("rejected device pairing requestId=\(requestId, privacy: .public)")
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} catch {
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self.logger.error("reject failed requestId=\(requestId, privacy: .public)")
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self.logger.error("reject failed: \(error.localizedDescription, privacy: .public)")
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}
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}
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private func endActiveAlert() {
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guard let alert = self.activeAlert else { return }
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if let parent = alert.window.sheetParent {
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parent.endSheet(alert.window, returnCode: .abort)
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}
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self.activeAlert = nil
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self.activeRequestId = nil
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}
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private func requireAlertHostWindow() -> NSWindow {
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if let alertHostWindow {
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return alertHostWindow
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}
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let window = AlertHostWindow(
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contentRect: NSRect(x: 0, y: 0, width: 520, height: 1),
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styleMask: [.borderless],
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backing: .buffered,
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defer: false)
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window.title = ""
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window.isReleasedWhenClosed = false
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window.level = .floating
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window.collectionBehavior = [.canJoinAllSpaces, .fullScreenAuxiliary]
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window.isOpaque = false
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window.hasShadow = false
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window.backgroundColor = .clear
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window.ignoresMouseEvents = true
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self.alertHostWindow = window
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return window
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}
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private func handle(push: GatewayPush) {
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switch push {
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case let .event(evt) where evt.event == "device.pair.requested":
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guard let payload = evt.payload else { return }
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do {
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let req = try GatewayPayloadDecoding.decode(payload, as: PendingRequest.self)
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self.enqueue(req)
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} catch {
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self.logger
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.error("failed to decode device pairing request: \(error.localizedDescription, privacy: .public)")
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}
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case let .event(evt) where evt.event == "device.pair.resolved":
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guard let payload = evt.payload else { return }
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do {
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let resolved = try GatewayPayloadDecoding.decode(payload, as: PairingResolvedEvent.self)
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self.handleResolved(resolved)
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} catch {
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self.logger
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.error(
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"failed to decode device pairing resolution: \(error.localizedDescription, privacy: .public)")
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}
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default:
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break
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}
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}
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private func enqueue(_ req: PendingRequest) {
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guard !self.queue.contains(req) else { return }
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self.queue.append(req)
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self.updatePendingCounts()
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self.presentNextIfNeeded()
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}
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private func handleResolved(_ resolved: PairingResolvedEvent) {
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let resolution = resolved.decision == PairingResolution.approved.rawValue ? PairingResolution
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.approved : .rejected
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if let activeRequestId, activeRequestId == resolved.requestId {
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self.resolvedByRequestId.insert(resolved.requestId)
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self.endActiveAlert()
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let decision = resolution.rawValue
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self.logger.info(
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"device pairing resolved while active requestId=\(resolved.requestId, privacy: .public) " +
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"decision=\(decision, privacy: .public)")
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return
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}
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self.queue.removeAll { $0.requestId == resolved.requestId }
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self.updatePendingCounts()
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}
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private static func describe(_ req: PendingRequest) -> String {
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var lines: [String] = []
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lines.append("Device: \(req.displayName ?? req.deviceId)")
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if let platform = req.platform {
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lines.append("Platform: \(platform)")
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}
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if let role = req.role {
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lines.append("Role: \(role)")
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}
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if let scopes = req.scopes, !scopes.isEmpty {
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lines.append("Scopes: \(scopes.joined(separator: ", "))")
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}
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if let remoteIp = req.remoteIp {
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lines.append("IP: \(remoteIp)")
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}
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if req.isRepair == true {
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lines.append("Repair: yes")
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}
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return lines.joined(separator: "\n")
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}
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}
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