From ef5f737c560083c9d41048163ae22a6cefd03e38 Mon Sep 17 00:00:00 2001
From: Dominic Go <18517029+dominicstop@users.noreply.github.com>
Date: Sun, 18 Jun 2023 06:28:40 +0800
Subject: [PATCH] =?UTF-8?q?=F0=9F=92=AB=20Update:=20Exp=20-=20`AdaptiveMod?=
 =?UTF-8?q?al`?=
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Summary: Update experiment/test - `swift-programmatic-modal/AdaptiveModal`.
---
 .../AdaptiveModal/AdaptiveModalConfig.swift   |  9 +++
 .../AdaptiveModal/AdaptiveModalManager.swift  | 76 ++++++++++++++-----
 .../RNILayout/RNILayoutValueMode.swift        |  2 +-
 3 files changed, 69 insertions(+), 18 deletions(-)

diff --git a/experiments/swift-programmatic-modal/AdaptiveModal/AdaptiveModalConfig.swift b/experiments/swift-programmatic-modal/AdaptiveModal/AdaptiveModalConfig.swift
index 2dbcae6d..0bbe115f 100644
--- a/experiments/swift-programmatic-modal/AdaptiveModal/AdaptiveModalConfig.swift
+++ b/experiments/swift-programmatic-modal/AdaptiveModal/AdaptiveModalConfig.swift
@@ -64,6 +64,15 @@ struct AdaptiveModalConfig {
     };
   };
   
+  var inputValueKeyForRect: KeyPath<CGRect, CGFloat> {
+    switch self.snapDirection {
+      case .bottomToTop: return \.minY;
+      case .topToBottom: return \.maxY;
+      case .leftToRight: return \.maxX;
+      case .rightToLeft: return \.minX;
+    };
+  };
+  
   var maxInputRangeKeyForRect: KeyPath<CGRect, CGFloat> {
     switch self.snapDirection {
       case .bottomToTop, .topToBottom: return \.height;
diff --git a/experiments/swift-programmatic-modal/AdaptiveModal/AdaptiveModalManager.swift b/experiments/swift-programmatic-modal/AdaptiveModal/AdaptiveModalManager.swift
index c56267ec..8beb1676 100644
--- a/experiments/swift-programmatic-modal/AdaptiveModal/AdaptiveModalManager.swift
+++ b/experiments/swift-programmatic-modal/AdaptiveModal/AdaptiveModalManager.swift
@@ -200,6 +200,41 @@ class AdaptiveModalManager: NSObject {
     return CGPoint(x: nextX, y: nextY);
   };
   
+  private var computedGestureOffset: CGPoint? {
+    guard let gestureInitialPoint = self.gestureInitialPoint,
+          let modalRect = self.modalFrame
+    else { return nil };
+    
+    if let gestureOffset = self.gestureOffset {
+      return gestureOffset;
+    };
+    
+    let xOffset: CGFloat = {
+      switch self.modalConfig.snapDirection {
+        case .bottomToTop, .rightToLeft:
+          return gestureInitialPoint.x - modalRect.minX;
+          
+        case .topToBottom, .leftToRight:
+          return modalRect.maxX - gestureInitialPoint.x;
+      };
+    }();
+    
+    let yOffset: CGFloat = {
+      switch self.modalConfig.snapDirection {
+        case .bottomToTop, .rightToLeft:
+          return gestureInitialPoint.y - modalRect.minY;
+          
+        case .topToBottom, .leftToRight:
+          return modalRect.maxY - gestureInitialPoint.y;
+      };
+    }();
+  
+    let offset = CGPoint(x: xOffset, y: yOffset);
+    self.gestureOffset = offset;
+    
+    return offset;
+  };
+  
   // MARK: -  Properties
   // -------------------
   
@@ -945,31 +980,38 @@ class AdaptiveModalManager: NSObject {
     let percentAdj = shouldInvertPercent
       ? AdaptiveModalUtilities.invertPercent(percent)
       : percent;
+      
+    print(
+        "applyInterpolationToModal"
+      + "\n - inputValue: \(inputValue)"
+      + "\n - interpolationRangeMaxInput: \(interpolationRangeMaxInput)"
+      + "\n - percent: \(percent)"
+      + "\n - interpolationRangeInput: \(self.interpolationRangeInput!)"
+      + "\n"
+    );
     
     self.applyInterpolationToModal(forInputPercentValue: percentAdj);
   };
   
   private func applyInterpolationToModal(forGesturePoint gesturePoint: CGPoint) {
-    guard let gestureInitialPoint = self.gestureInitialPoint
+    guard let computedGestureOffset = self.computedGestureOffset
     else { return };
     
-    let modalRect = self.modalFrame!;
-
-    let gestureOffset = self.gestureOffset ?? {
-      return CGPoint(
-        x: gestureInitialPoint.x - modalRect.origin.x,
-        y: gestureInitialPoint.y - modalRect.origin.y
-      );
+    let gestureInputPoint: CGPoint = {
+      switch self.modalConfig.snapDirection {
+        case .bottomToTop, .rightToLeft:
+          return CGPoint(
+            x: gesturePoint.x - computedGestureOffset.x,
+            y: gesturePoint.y - computedGestureOffset.y
+          );
+          
+        case .topToBottom, .leftToRight:
+          return CGPoint(
+            x: gesturePoint.x + computedGestureOffset.x,
+            y: gesturePoint.y + computedGestureOffset.y
+          );
+      };
     }();
-    
-    if self.gestureOffset == nil {
-      self.gestureOffset = gestureOffset;
-    };
-      
-    let gestureInputPoint = CGPoint(
-      x: gesturePoint.x - gestureOffset.x,
-      y: gesturePoint.y - gestureOffset.y
-    );
   
     self.applyInterpolationToModal(forPoint: gestureInputPoint);
   };
diff --git a/experiments/swift-programmatic-modal/RNILayout/RNILayoutValueMode.swift b/experiments/swift-programmatic-modal/RNILayout/RNILayoutValueMode.swift
index c70ce312..6dacc6ca 100644
--- a/experiments/swift-programmatic-modal/RNILayout/RNILayoutValueMode.swift
+++ b/experiments/swift-programmatic-modal/RNILayout/RNILayoutValueMode.swift
@@ -22,7 +22,7 @@ public enum RNILayoutValueMode {
     insetKey: KeyPath<UIEdgeInsets, CGFloat>
   );
   
-  case multipleValues(_ values: [RNILayoutValueMode]);
+  case multipleValues(_ values: [Self]);
   
   // MARK: Functions
   // ---------------