From 843c8054ad10bffc630a62cbc2cf9bbf1aa42f88 Mon Sep 17 00:00:00 2001
From: vasavk <vasavi.kanamarlapudi@verizon.com>
Date: Fri, 10 May 2024 22:40:37 +0530
Subject: [PATCH] Digital ACT-191 ONEAPP-7958 story: dynamic height update for
 calendar

---
 VDS/Components/Calendar/Calendar.swift       | 28 +++++++++++++-------
 VDS/Components/Calendar/Date+Extension.swift |  4 ++-
 2 files changed, 22 insertions(+), 10 deletions(-)

diff --git a/VDS/Components/Calendar/Calendar.swift b/VDS/Components/Calendar/Calendar.swift
index bcba3885..9ec8e6fc 100644
--- a/VDS/Components/Calendar/Calendar.swift
+++ b/VDS/Components/Calendar/Calendar.swift
@@ -74,8 +74,9 @@ open class CalendarBase: View {
     private let headerHeight = 88.0
     private let footerHeight = 40.0
     private let calendarWidth = 304.0
-    private let items = 35
-
+    
+    private var heightConstraint: NSLayoutConstraint?
+    private var containerHeightConstraint: NSLayoutConstraint?
     private var selectedIndexPath : IndexPath?
     private var dates: [Date] = []
     private var days: [String] = []
@@ -121,15 +122,16 @@ open class CalendarBase: View {
     /// Called once when a view is initialized and is used to Setup additional UI or other constants and configurations.
     open override func setup() {
         super.setup()
-        isAccessibilityElement = false
+        isAccessibilityElement = true
+        accessibilityLabel = "Calendar"
         addSubview(containerView)
         containerView
             .pinTop()
             .pinBottom()
             .pinLeadingGreaterThanOrEqualTo()
             .pinTrailingLessThanOrEqualTo()
-            .height(containerSize.height)
             .width(containerSize.width)
+            .heightGreaterThanEqualTo(containerSize.height)
         containerView.centerXAnchor.constraint(equalTo: centerXAnchor).activate()
 
         // Calendar View
@@ -142,10 +144,10 @@ open class CalendarBase: View {
             .pinLeading(spacing)
             .pinTrailing(spacing)
             .width(calendarWidth)
-            .height(calendarHeight)
+            .heightGreaterThanEqualTo(calendarHeight)
         collectionView.centerXAnchor.constraint(equalTo: containerView.centerXAnchor).activate()
     }
-    
+
     open override func updateView() {
         super.updateView()
         // range check between min & max dates
@@ -154,8 +156,8 @@ open class CalendarBase: View {
             let fallsBetween = displayDate.isBetweeen(date: minDate, andDate: maxDate)
             displayDate = fallsBetween ? displayDate : minDate
             self.fetchDates(with: displayDate)
-            collectionView.reloadData()
         }
+        
         layer.backgroundColor = backgroundColorConfiguration.getColor(self).cgColor
         if hideContainerBorder {
             layer.borderColor = nil
@@ -187,6 +189,8 @@ open class CalendarBase: View {
     // MARK: - Private Methods
     //--------------------------------------------------
     func fetchDates(with aDate:Date) {
+        heightConstraint?.isActive = false
+        containerHeightConstraint?.isActive = false
         days.removeAll()
         self.dates = aDate.calendarDisplayDays
         for date in dates {
@@ -197,6 +201,14 @@ open class CalendarBase: View {
                 days.append(getDay(with: date))
             }
         }
+        self.collectionView.reloadData()
+        var height = self.collectionView.collectionViewLayout.collectionViewContentSize.height
+        height = (height > 0) ? height : containerSize.height
+        heightConstraint = collectionView.heightAnchor.constraint(equalToConstant: height)
+        containerHeightConstraint = containerView.heightAnchor.constraint(equalToConstant: (height + (2 * VDSLayout.space4X)))
+        heightConstraint?.isActive = true
+        containerHeightConstraint?.isActive = true
+        self.layoutIfNeeded()
     }
     
     func getDay(with date:Date) -> String {
@@ -259,7 +271,6 @@ extension CalendarBase: UICollectionViewDelegate, UICollectionViewDataSource, UI
                 if ((aDate.monthInt <= maxDate.monthInt) && (aDate.yearInt == maxDate.yearInt)) || (aDate.yearInt < maxDate.yearInt) {
                     displayDate = aDate
                     self.fetchDates(with: displayDate)
-                    self.collectionView.reloadData()
                 }
             }
             header.previousClicked = { [weak self] in
@@ -268,7 +279,6 @@ extension CalendarBase: UICollectionViewDelegate, UICollectionViewDataSource, UI
                 if ((minDate.monthInt <= aDate.monthInt) && (minDate.yearInt == aDate.yearInt)) || (minDate.yearInt < aDate.yearInt) {
                     displayDate = aDate
                     self.fetchDates(with: displayDate)
-                    self.collectionView.reloadData()
                 }
             }
             header.update(with: surface, aDate: displayDate, nextEnabled: nextEnabled, previousEnabled: prevEnabled)
diff --git a/VDS/Components/Calendar/Date+Extension.swift b/VDS/Components/Calendar/Date+Extension.swift
index 2a016ecb..8d697049 100644
--- a/VDS/Components/Calendar/Date+Extension.swift
+++ b/VDS/Components/Calendar/Date+Extension.swift
@@ -92,7 +92,9 @@ extension Date {
     
     /// Check if the date falls between the given dates
     func isBetweeen(date date1: Date, andDate date2: Date) -> Bool {
-        return date1.compare(self) == self.compare(date2)
+        let from = Calendar.current.date(byAdding: .day, value: -1, to: date1)!
+        let to = Calendar.current.date(byAdding: .day, value: 1, to: date2)!
+        return from.compare(self) == self.compare(to)
     }
     
     /// Returns the month name of the given date