Merge pull request #6 from mlbonniec/5-create-a-modifier-to-present-i…

…f-needed

Create a modifier to present if needed

Sources/OnBoardingKit/Models/OnBoardingKitModel.swift

@@ -0,0 +1,8 @@
+//
+//  OnBoardingKitModel.swift
+//
+//
+//  Created by Mathis Le Bonniec on 15/01/2024.
+//
+
+public enum OnBoardingKit {}

Sources/OnBoardingKit/Models/OnBoardingModel.swift

@@ -7,7 +7,7 @@
 
 import SwiftUI
 
-public enum OnBoardingKit {
+extension OnBoardingKit {
   public struct Feature: Identifiable {
     public var id: UUID { UUID() }
 

Sources/OnBoardingKit/Models/OnBoardingPresentationModel.swift

@@ -0,0 +1,18 @@
+//
+//  OnBoardingPresentationModel.swift
+//  
+//
+//  Created by Mathis Le Bonniec on 15/01/2024.
+//
+
+import Foundation
+
+extension OnBoardingKit {
+  public static func resetDatastore() {
+    UserDefaults.standard.removeObject(forKey: OnBoardingAppStorage.hasOnBoardingBeenPresented.rawValue)
+  }
+}
+
+internal enum OnBoardingAppStorage: String {
+  case hasOnBoardingBeenPresented
+}

Sources/OnBoardingKit/Modifiers/PresentOnBoarding.swift

@@ -0,0 +1,72 @@
+//
+//  PresentOnBoarding.swift
+//
+//
+//  Created by Mathis Le Bonniec on 15/01/2024.
+//
+
+import SwiftUI
+
+public struct OnBoardingPresentation: ViewModifier {
+  // MARK: Properties
+  public let onBoarding: OnBoarding
+  public let mode: Mode
+  public let action: () -> Void
+  public enum Mode {
+    case sheet, fullscreen
+  }
+
+  // MARK: Reactive Properties
+  @State private var isPresented: Bool = false
+  @AppStorage(OnBoardingAppStorage.hasOnBoardingBeenPresented.rawValue) private var hasBeenPresented: Bool = false
+
+  // MARK: Body
+  public func body(content: Content) -> some View {
+    switch mode {
+    case .sheet:
+      initialContent(content: content)
+        .sheet(isPresented: $isPresented) {
+          onBoardingView
+            .interactiveDismissDisabled()
+        }
+    case .fullscreen:
+      initialContent(content: content)
+        .fullScreenCover(isPresented: $isPresented) {
+          onBoardingView
+        }
+    }
+  }
+
+  private var onBoardingView: OnBoardingView {
+    OnBoardingView(onBoarding) {
+      hasBeenPresented = true
+      isPresented = false
+      action()
+    }
+  }
+
+  private func initialContent(content: Content) -> some View {
+    content
+      .onAppear {
+        if !hasBeenPresented {
+          isPresented = true
+        }
+      }
+      .onChange(of: hasBeenPresented) {
+        if !hasBeenPresented {
+          isPresented = true
+        }
+      }
+  }
+}
+
+extension View {
+  public func presentOnBoarding(
+    _ onBoarding: OnBoarding,
+    mode: OnBoardingPresentation.Mode = .fullscreen,
+    action: @escaping () -> Void = {}
+  ) -> some View {
+    self
+      .modifier(OnBoardingPresentation(onBoarding: onBoarding, mode: mode, action: action))
+  }
+}