1

Fableon/Object/Libs/Alert/FAPayRetainAlert.swift

@@ -7,6 +7,7 @@
 
 import UIKit
 import SnapKit
+import YYText
 
 class FAPayRetainAlert: FABaseAlert {
 
@@ -164,6 +165,10 @@ extension FAPayRetainAlert {
             }
         }
 
+        private static let defaultCountdownSeconds = 4 * 60 * 60
+        private var countdownTimer: Timer?
+        private var remainingSeconds: Int = 0
+
         private let prefixLabel = UILabel()
         private let suffixLabel = UILabel()
         private let timeStackView = UIStackView()
@@ -178,6 +183,10 @@ extension FAPayRetainAlert {
             setupView()
         }
 
+        deinit {
+            stopCountdown()
+        }
+
         required init?(coder: NSCoder) {
             fatalError("init(coder:) has not been implemented")
         }
@@ -191,6 +200,15 @@ extension FAPayRetainAlert {
             secondView.setText(countdown.seconds)
         }
 
+        override func didMoveToWindow() {
+            super.didMoveToWindow()
+            if window != nil {
+                startCountdown()
+            } else {
+                stopCountdown()
+            }
+        }
+
         private func setupView() {
             let mainStack = UIStackView()
             mainStack.axis = .horizontal
@@ -231,6 +249,42 @@ extension FAPayRetainAlert {
             }
         }
 
+        // 每次展示时从 4 小时开始倒计时
+        private func startCountdown() {
+            stopCountdown()
+            remainingSeconds = Self.defaultCountdownSeconds
+            updateTimeLabels()
+            countdownTimer = Timer.scheduledTimer(timeInterval: 1,
+                                                  target: YYTextWeakProxy(target: self),
+                                                  selector: #selector(handleCountdownTimer),
+                                                  userInfo: nil,
+                                                  repeats: true)
+        }
+
+        private func stopCountdown() {
+            countdownTimer?.invalidate()
+            countdownTimer = nil
+        }
+
+        @objc private func handleCountdownTimer() {
+            guard remainingSeconds > 0 else {
+                updateTimeLabels()
+                stopCountdown()
+                return
+            }
+            remainingSeconds -= 1
+            updateTimeLabels()
+        }
+
+        private func updateTimeLabels() {
+            let hours = remainingSeconds / 3600
+            let minutes = (remainingSeconds % 3600) / 60
+            let seconds = remainingSeconds % 60
+            hourView.setText(String(format: "%02d", hours))
+            minuteView.setText(String(format: "%02d", minutes))
+            secondView.setText(String(format: "%02d", seconds))
+        }
+
         private final class TimeBoxView: UIView {
             private let label = UILabel()