From 5dce892dbc5ea9b7d0410fff82b80cca59131c27 Mon Sep 17 00:00:00 2001
From: Dominic Go <dominic@dominicgo.dev>
Date: Sat, 28 Sep 2024 06:50:40 +0800
Subject: [PATCH] =?UTF-8?q?=F0=9F=92=AB=20Update:=20`ViewControllerLifecyc?=
 =?UTF-8?q?leNotifiable`=20Requirements?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../ModalSheetPresentationStateMachine.swift  |  9 ++++--
 .../ViewControllerLifecycleNotifiable.swift   | 18 ++++++++----
 .../ViewControllerLifecycleNotifier.swift     | 29 +++++++++++++++++--
 3 files changed, 44 insertions(+), 12 deletions(-)

diff --git a/ios/Temp/ModalSheetPresentationStateMachine.swift b/ios/Temp/ModalSheetPresentationStateMachine.swift
index 52f8b545..3560be8d 100644
--- a/ios/Temp/ModalSheetPresentationStateMachine.swift
+++ b/ios/Temp/ModalSheetPresentationStateMachine.swift
@@ -147,7 +147,8 @@ extension ModalSheetPresentationStateMachine: ViewControllerLifecycleNotifiable
 
   public func notifyOnViewWillAppear(
     sender: UIViewController,
-    isAnimated: Bool
+    isAnimated: Bool,
+    isFirstAppearance: Bool
   ) {
     
     self.setState(nextState: .presenting);
@@ -155,7 +156,8 @@ extension ModalSheetPresentationStateMachine: ViewControllerLifecycleNotifiable
   
   public func notifyOnViewIsAppearing(
     sender: UIViewController,
-    isAnimated: Bool
+    isAnimated: Bool,
+    isFirstAppearance: Bool
   ) {
     
     self.setState(nextState: .presenting);
@@ -163,7 +165,8 @@ extension ModalSheetPresentationStateMachine: ViewControllerLifecycleNotifiable
   
   public func notifyOnViewDidAppear(
     sender: UIViewController,
-    isAnimated: Bool
+    isAnimated: Bool,
+    isFirstAppearance: Bool
   ) {
     
     self.setState(nextState: .presented);
diff --git a/ios/Temp/ViewControllerLifecycleNotifiable.swift b/ios/Temp/ViewControllerLifecycleNotifiable.swift
index 8feacab5..318c0f35 100644
--- a/ios/Temp/ViewControllerLifecycleNotifiable.swift
+++ b/ios/Temp/ViewControllerLifecycleNotifiable.swift
@@ -14,17 +14,20 @@ public protocol ViewControllerLifecycleNotifiable: AnyObject {
 
   func notifyOnViewWillAppear(
     sender: UIViewController,
-    isAnimated: Bool
+    isAnimated: Bool,
+    isFirstAppearance: Bool
   );
   
   func notifyOnViewIsAppearing(
     sender: UIViewController,
-    isAnimated: Bool
+    isAnimated: Bool,
+    isFirstAppearance: Bool
   );
   
   func notifyOnViewDidAppear(
     sender: UIViewController,
-    isAnimated: Bool
+    isAnimated: Bool,
+    isFirstAppearance: Bool
   );
   
   func notifyOnViewWillDisappear(
@@ -57,21 +60,24 @@ public extension ViewControllerLifecycleNotifiable {
 
   func notifyOnViewWillAppear(
     sender: UIViewController,
-    isAnimated: Bool
+    isAnimated: Bool,
+    isFirstAppearance: Bool
   ) {
     // no-op
   };
   
   func notifyOnViewIsAppearing(
     sender: UIViewController,
-    isAnimated: Bool
+    isAnimated: Bool,
+    isFirstAppearance: Bool
   ) {
     // no-op
   };
   
   func notifyOnViewDidAppear(
     sender: UIViewController,
-    isAnimated: Bool
+    isAnimated: Bool,
+    isFirstAppearance: Bool
   ) {
     // no-op
   };
diff --git a/ios/Temp/ViewControllerLifecycleNotifier.swift b/ios/Temp/ViewControllerLifecycleNotifier.swift
index eaa06efe..ca97c932 100644
--- a/ios/Temp/ViewControllerLifecycleNotifier.swift
+++ b/ios/Temp/ViewControllerLifecycleNotifier.swift
@@ -11,6 +11,8 @@ import DGSwiftUtilities
 
 open class ViewControllerLifecycleNotifier: UIViewController {
 
+  private(set) var isAppearingForTheFirstTime = true;
+
   private(set) public var lifecycleEventDelegates:
     MulticastDelegate<ViewControllerLifecycleNotifiable> = .init();
     
@@ -43,7 +45,11 @@ open class ViewControllerLifecycleNotifier: UIViewController {
 
   public override func viewWillAppear(_ animated: Bool) {
     self.lifecycleEventDelegates.invoke {
-      $0.notifyOnViewWillAppear(sender: self, isAnimated: animated);
+      $0.notifyOnViewWillAppear(
+        sender: self,
+        isAnimated: animated,
+        isFirstAppearance: self.isAppearingForTheFirstTime
+      );
     };
     
     #if DEBUG
@@ -54,6 +60,7 @@ open class ViewControllerLifecycleNotifier: UIViewController {
         "\n - className:", self.className,
         "\n - animated:", animated,
         "\n - isBeingPresented:", self.isBeingPresented,
+        "\n - isAppearingForTheFirstTime:", self.isAppearingForTheFirstTime,
         "\n"
       );
     };
@@ -62,7 +69,11 @@ open class ViewControllerLifecycleNotifier: UIViewController {
   
   public override func viewIsAppearing(_ animated: Bool) {
     self.lifecycleEventDelegates.invoke {
-      $0.notifyOnViewIsAppearing(sender: self, isAnimated: animated);
+      $0.notifyOnViewIsAppearing(
+        sender: self,
+        isAnimated: animated,
+        isFirstAppearance: self.isAppearingForTheFirstTime
+      );
     };
     
     #if DEBUG
@@ -73,6 +84,7 @@ open class ViewControllerLifecycleNotifier: UIViewController {
         "\n - className:", self.className,
         "\n - animated:", animated,
         "\n - isBeingPresented:", self.isBeingPresented,
+        "\n - isAppearingForTheFirstTime:", self.isAppearingForTheFirstTime,
         "\n"
       );
     };
@@ -80,8 +92,18 @@ open class ViewControllerLifecycleNotifier: UIViewController {
   };
   
   public override func viewDidAppear(_ animated: Bool) {
+    defer {
+      if self.isAppearingForTheFirstTime {
+        self.isAppearingForTheFirstTime = false;
+      };
+    };
+    
     self.lifecycleEventDelegates.invoke {
-      $0.notifyOnViewDidAppear(sender: self, isAnimated: animated);
+      $0.notifyOnViewDidAppear(
+        sender: self,
+        isAnimated: animated,
+        isFirstAppearance: self.isAppearingForTheFirstTime
+      );
     };
     
     #if DEBUG
@@ -92,6 +114,7 @@ open class ViewControllerLifecycleNotifier: UIViewController {
         "\n - className:", self.className,
         "\n - animated:", animated,
         "\n - isBeingPresented:", self.isPresentedAsModal,
+        "\n - isAppearingForTheFirstTime:", self.isAppearingForTheFirstTime,
         "\n"
       );
     };