feat: Add Swift Package Manager (SPM) support

CHANGELOG.md

@@ -1,3 +1,7 @@
+# (unreleased)
+
+- Add Swift Package Manager (SPM) support
+
 # [4.1.0](https://github.com/SimformSolutionsPvtLtd/flutter_credit_card/tree/4.1.0)
 
 - Fixed floating event stream bad state exception [#157](https://github.com/SimformSolutionsPvtLtd/flutter_credit_card/issues/157).

example/ios/Runner/AppDelegate.swift

@@ -1,7 +1,7 @@
 import UIKit
 import Flutter
 
-@UIApplicationMain
+@main
 @objc class AppDelegate: FlutterAppDelegate {
   override func application(
     _ application: UIApplication,

example/macos/Runner/AppDelegate.swift

@@ -1,7 +1,7 @@
 import Cocoa
 import FlutterMacOS
 
-@NSApplicationMain
+@main
 class AppDelegate: FlutterAppDelegate {
   override func applicationShouldTerminateAfterLastWindowClosed(_ sender: NSApplication) -> Bool {
     return true

ios/flutter_credit_card.podspec

@@ -14,11 +14,10 @@ and float.
   s.license          = { :type => 'MIT', :file => '../LICENSE' }
   s.author           = { 'Simform Solutions' => 'developer@simform.com' }
   s.source           = { :http => 'https://github.com/SimformSolutionsPvtLtd/flutter_credit_card/tree/master' }
-  s.source_files = 'Classes/**/*'
+  s.source_files = 'flutter_credit_card/Sources/flutter_credit_card/**/*.swift'
   s.dependency 'Flutter'
-  s.platform = :ios, '11.0'
+  s.platform = :ios, '12.0'
 
-  # Flutter.framework does not contain a i386 slice.
-  s.pod_target_xcconfig = { 'DEFINES_MODULE' => 'YES', 'EXCLUDED_ARCHS[sdk=iphonesimulator*]' => 'i386' }
+  s.pod_target_xcconfig = { 'DEFINES_MODULE' => 'YES' }
   s.swift_version = '5.0'
 end

ios/flutter_credit_card/Package.swift

@@ -0,0 +1,24 @@
+// swift-tools-version: 5.9
+import PackageDescription
+
+let package = Package(
+  name: "flutter_credit_card",
+  platforms: [
+    .iOS("12.0")
+  ],
+  products: [
+    .library(name: "flutter-credit-card", targets: ["flutter_credit_card"])
+  ],
+  dependencies: [
+    .package(name: "FlutterFramework", path: "../FlutterFramework")
+  ],
+  targets: [
+    .target(
+      name: "flutter_credit_card",
+      dependencies: [
+        .product(name: "FlutterFramework", package: "FlutterFramework")
+      ],
+      path: "Sources/flutter_credit_card"
+    )
+  ]
+)

ios/flutter_credit_card/Sources/flutter_credit_card/Constants.swift

@@ -0,0 +1,7 @@
+enum Constants {
+  static let gyroEventChannel = "com.simform.flutter_credit_card/gyroscope"
+  static let gyroMethodChannel = "com.simform.flutter_credit_card"
+  static let initiateEvents = "initiateEvents"
+  static let cancelEvents = "cancelEvents"
+  static let isGyroAvailable = "isGyroscopeAvailable"
+}

ios/flutter_credit_card/Sources/flutter_credit_card/FlutterCreditCardPlugin.swift

@@ -0,0 +1,15 @@
+import CoreMotion
+import Flutter
+
+public class FlutterCreditCardPlugin: NSObject, FlutterPlugin {
+  private var gyroscopeChannel: GyroscopeChannelImpl?
+
+  public static func register(with registrar: FlutterPluginRegistrar) {
+    let instance = FlutterCreditCardPlugin()
+    instance.gyroscopeChannel = GyroscopeChannelImpl(messenger: registrar.messenger())
+  }
+
+  public func detachFromEngine(for registrar: FlutterPluginRegistrar) {
+    gyroscopeChannel = nil
+  }
+}

ios/flutter_credit_card/Sources/flutter_credit_card/gyroscope/GyroscopeChannelImpl.swift

@@ -0,0 +1,59 @@
+import CoreMotion
+import Flutter
+
+internal class GyroscopeChannelImpl {
+  private var motionManager: CMMotionManager?
+  private var eventChannel: FlutterEventChannel?
+  private var methodChannel: FlutterMethodChannel?
+  private var streamHandler: GyroscopeStreamHandler?
+
+  init(messenger: FlutterBinaryMessenger) {
+    eventChannel = FlutterEventChannel(name: Constants.gyroEventChannel, binaryMessenger: messenger)
+    methodChannel = FlutterMethodChannel(
+      name: Constants.gyroMethodChannel, binaryMessenger: messenger)
+    methodChannel?.setMethodCallHandler(onMethodCall)
+  }
+
+  deinit {
+    eventStreamDisposal()
+    methodChannel?.setMethodCallHandler(nil)
+    methodChannel = nil
+  }
+
+  private func onMethodCall(_ call: FlutterMethodCall, result: @escaping FlutterResult) {
+    switch call.method {
+    case Constants.initiateEvents:
+      eventStreamSetup()
+      result(nil)
+    case Constants.isGyroAvailable:
+      result(hasGyroAvailability())
+    case Constants.cancelEvents:
+      eventStreamDisposal()
+      result(nil)
+    default:
+      result(FlutterMethodNotImplemented)
+    }
+  }
+
+  private func eventStreamSetup() {
+    motionManager = CMMotionManager()
+    if !hasGyroAvailability() {
+      motionManager = nil
+      return
+    }
+
+    streamHandler = streamHandler ?? GyroscopeStreamHandler(motionManager: motionManager!)
+    eventChannel?.setStreamHandler(streamHandler)
+  }
+
+  private func eventStreamDisposal() {
+    _ = streamHandler?.onCancel(withArguments: nil)
+    eventChannel?.setStreamHandler(nil)
+    streamHandler = nil
+    motionManager = nil
+  }
+
+  private func hasGyroAvailability() -> Bool {
+    return motionManager?.isGyroAvailable ?? false
+  }
+}

ios/flutter_credit_card/Sources/flutter_credit_card/gyroscope/GyroscopeStreamHandler.swift

@@ -0,0 +1,42 @@
+import CoreMotion
+import Flutter
+import UIKit
+
+internal class GyroscopeStreamHandler: NSObject, FlutterStreamHandler {
+  private var motionManager: CMMotionManager?
+
+  init(motionManager: CMMotionManager) {
+    self.motionManager = motionManager
+    // Gyroscope event interval set to 60 fps, specified in seconds.
+    self.motionManager!.gyroUpdateInterval = 0.016666
+    super.init()
+  }
+
+  public func onListen(withArguments arguments: Any?, eventSink sink: @escaping FlutterEventSink)
+    -> FlutterError?
+  {
+    motionManager?.startGyroUpdates(to: OperationQueue()) { (gyroData, error) in
+      if let rotationRate = gyroData?.rotationRate {
+        sink(GyroscopeStreamHandler.processForOrientation(rotationRate))
+      }
+    }
+    return nil
+  }
+
+  public func onCancel(withArguments arguments: Any?) -> FlutterError? {
+    motionManager?.stopGyroUpdates()
+    motionManager = nil
+    return nil
+  }
+
+  static private func processForOrientation(_ rotation: CMRotationRate) -> [Double] {
+    switch UIDevice.current.orientation {
+    case UIDeviceOrientation.landscapeLeft:
+      return [-rotation.y, rotation.x, rotation.z]
+    case UIDeviceOrientation.landscapeRight:
+      return [rotation.y, -rotation.x, rotation.z]
+    default:
+      return [rotation.x, rotation.y, rotation.z]
+    }
+  }
+}