Implement Undo Action

Example/Tests/Info.plist

@@ -15,7 +15,7 @@
 	<key>CFBundlePackageType</key>
 	<string>BNDL</string>
 	<key>CFBundleShortVersionString</key>
-	<string>1.7.3</string>
+	<string>1.8</string>
 	<key>CFBundleSignature</key>
 	<string>????</string>
 	<key>CFBundleVersion</key>

MyTinderSwipingAnimation.podspec

@@ -8,7 +8,7 @@
 
 Pod::Spec.new do |s|
   s.name             = 'MyTinderSwipingAnimation'
-  s.version          = '1.7.3'
+  s.version          = '1.8'
   s.summary          = 'TinderSwipingAnimation is an easy to use library written using SwiftUI to simplify the implementation of the tinder swipe animation.'
 
 # This description is used to generate tags and improve search results.

Sources/TinderSwipingAnimation/Components/CustomButton.swift

@@ -24,6 +24,8 @@ struct CustomButton: View {
                        viewModel.goTop = true
                    case .goBottom:
                        viewModel.goBottom = true
+                   case .undo:
+                        viewModel.undo = true
                    }
         }) {
             button.image

Sources/TinderSwipingAnimation/Models/ButtonModel.swift

@@ -23,5 +23,6 @@ public struct ButtonModel {
         case goLeft
         case goTop
         case goBottom
+        case undo
     }
 }

Sources/TinderSwipingAnimation/Models/Direction.swift

@@ -13,12 +13,14 @@ public enum Direction {
     case left
     case top
     case bottom
+    case undo
     public var description: String {
         switch self {
         case .right: return "right"
         case .left: return "left"
         case .top: return "top"
         case .bottom: return "bottom"
+        case .undo: return "undo"
         }
     }
 }

Sources/TinderSwipingAnimation/ViewModels/TinderViewModel.swift

@@ -19,4 +19,5 @@ class TinderViewModel: ObservableObject {
     @Published var goLeft: Bool = false
     @Published var goTop: Bool = false
     @Published var goBottom: Bool = false
+    @Published var undo: Bool = false
 }

Sources/TinderSwipingAnimation/Views/CardView.swift

@@ -38,14 +38,17 @@ struct CardView: View {
             viewModel.$goBottom.sink { _ in
                     }
                     .store(in: &subscriptions)
+            viewModel.$undo.sink { _ in
+                    }
+                    .store(in: &subscriptions)
         }
     var body: some View {
         ZStack {
             ForEach(0..<cards.count,id: \.self) { i in
                 Card(card: cards[i], buttons: buttons, viewModel: viewModel, orientation: orientation, backgroundColor: backgroundColor)
                     .offset(x: self.x[i],y: y[i])
                     .rotationEffect(.init(degrees: degree[i]))
-                    .onChange(of: viewModel.goRight || viewModel.goLeft || viewModel.goBottom || viewModel.goTop) {
+                    .onChange(of: viewModel.goRight || viewModel.goLeft || viewModel.goBottom || viewModel.goTop || viewModel.undo) {
                                             if viewModel.goRight && abs(degree[i]) != 12 && abs(degree[i]) != 1 {
                                                 withAnimation(.default) {
                                                     viewModel.goRight = false
@@ -86,6 +89,19 @@ struct CardView: View {
                                                     viewModel.cards[i].thumbsUpOpacity = 0
                                                     viewModel.cards[i].thumbsDownOpacity = 0
                                                 }
+                                            }  else if viewModel.undo {
+                                                viewModel.undo = false
+                                                if let lastIndex = degree.firstIndex(where: {abs($0) == 1 || abs($0) == 12}) {
+                                                    withAnimation(.default) {
+                                                        self.x[lastIndex] = 0
+                                                        self.y[lastIndex] = 0
+                                                        self.offset = 0
+                                                        self.degree[lastIndex] = 0
+                                                        viewModel.cardSwiped = (cards[i],Direction.undo)
+                                                        viewModel.cards[i].thumbsUpOpacity = 0
+                                                        viewModel.cards[i].thumbsDownOpacity = 0
+                                                    }
+                                                }
                                             }
                                         }
                     .gesture(DragGesture()