From 28d8161d09aea73fb93093d5af428682073d9fa2 Mon Sep 17 00:00:00 2001
From: Matt Bruce <matt.bruce@verizon.com>
Date: Mon, 13 May 2024 13:12:07 -0500
Subject: [PATCH] refactored date picker a popover

Signed-off-by: Matt Bruce <matt.bruce@verizon.com>
---
 VDS/Components/DatePicker/DatePicker.swift | 85 ++++++++++++++++------
 1 file changed, 64 insertions(+), 21 deletions(-)

diff --git a/VDS/Components/DatePicker/DatePicker.swift b/VDS/Components/DatePicker/DatePicker.swift
index a7dc3e29..cd4b3777 100644
--- a/VDS/Components/DatePicker/DatePicker.swift
+++ b/VDS/Components/DatePicker/DatePicker.swift
@@ -5,7 +5,7 @@ import Combine
 
 /// A dropdown select is an expandable menu of predefined options that allows a customer to make a single selection.
 @objc(VDSDatePicker)
-open class DatePicker: EntryFieldBase {
+open class DatePicker: EntryFieldBase, DatePickerPopoverViewControllerDelegate, UIPopoverPresentationControllerDelegate {
     //--------------------------------------------------
     // MARK: - Initializers
     //--------------------------------------------------
@@ -31,9 +31,7 @@ open class DatePicker: EntryFieldBase {
     // MARK: - Private Properties
     //--------------------------------------------------
     internal var minWidthDefault = 186.0
-    
-    internal let picker = UIDatePicker()
-    
+        
     internal var bottomStackView: UIStackView = {
         return UIStackView().with {
             $0.translatesAutoresizingMaskIntoConstraints = false
@@ -103,10 +101,6 @@ open class DatePicker: EntryFieldBase {
         selectedDateLabel.textColorConfiguration = primaryColorConfiguration.eraseToAnyColorable()
               
         // setup the calendar
-        picker.datePickerMode = .date
-        picker.preferredDatePickerStyle = .inline
-        picker.addTarget(self, action: #selector(dateChanged(_:)), for: .valueChanged)
-        picker.isHidden = true
         
         // tap gesture
         fieldStackView
@@ -128,19 +122,12 @@ open class DatePicker: EntryFieldBase {
         controlStackView.addArrangedSubview(selectedDateLabel)
         return controlStackView
     }
-    
-    open override func getBottomContainer() -> UIView {
-        bottomStackView.addArrangedSubview(bottomContainerStackView)
-        bottomStackView.addArrangedSubview(picker)
-        return bottomStackView
-    }
-    
+        
     /// Used to make changes to the View based off a change events or from local properties.
     open override func updateView() {
         super.updateView()
         
         if let selectedDate {
-            picker.date = selectedDate
             formatDate(selectedDate)
         }
         
@@ -162,13 +149,69 @@ open class DatePicker: EntryFieldBase {
     }
     
     internal func togglePicker() {
-        picker.isHidden = !picker.isHidden
-        bottomContainerStackView.isHidden = !bottomContainerStackView.isHidden
+        let calendarVC = DatePickerPopoverViewController(calendar: Calendar(identifier: .gregorian), delegate: self)
+        calendarVC.modalPresentationStyle = .popover
+        calendarVC.selectedDate = selectedDate ?? Date()
+        if let popoverController = calendarVC.popoverPresentationController {
+            popoverController.delegate = self
+            popoverController.sourceView = containerView
+            popoverController.sourceRect = containerView.bounds
+            popoverController.permittedArrowDirections = .any
+        }
+        if let viewController = UIApplication.topViewController() {
+            viewController.present(calendarVC, animated: true, completion: nil)
+        }
     }
     
-    @objc private func dateChanged(_ sender: UIDatePicker) {
-        selectedDate = sender.date
+    internal func didSelectDate(_ controller: DatePickerPopoverViewController, date: Date) {
+        selectedDate = date
+        controller.dismiss(animated: true)
         sendActions(for: .valueChanged)
-        togglePicker()
+    }
+    
+    public func adaptivePresentationStyle(for controller: UIPresentationController) -> UIModalPresentationStyle {
+        return .none
+    }
+}
+
+protocol DatePickerPopoverViewControllerDelegate: NSObject {
+    func didSelectDate(_ controller: DatePickerPopoverViewController, date: Date)
+}
+
+class DatePickerPopoverViewController: UIViewController {
+
+    private let picker = UIDatePicker()
+    weak var delegate: DatePickerPopoverViewControllerDelegate?
+
+    init(calendar: Calendar, delegate: DatePickerPopoverViewControllerDelegate?) {
+        self.delegate = delegate
+        super.init(nibName: nil, bundle: nil)
+        picker.datePickerMode = .date
+        picker.preferredDatePickerStyle = .inline
+        picker.addTarget(self, action: #selector(dateChanged(_:)), for: .valueChanged)
+    }
+    
+    var selectedDate: Date = Date() {
+        didSet {
+            picker.date = selectedDate
+        }
+    }
+
+    required init?(coder: NSCoder) {
+        fatalError("init(coder:) has not been implemented")
+    }
+
+    override func loadView() {
+        view = picker
+        view.backgroundColor = .white
+    }
+
+    override func viewDidLoad() {
+        super.viewDidLoad()
+        preferredContentSize = CGSize(width: 300, height: 400) // Adjust as needed
+    }
+
+    @objc private func dateChanged(_ sender: UIDatePicker) {
+        delegate?.didSelectDate(self, date: sender.date)
     }
 }