Various fixes

submodules/TelegramUI/Components/Gifts/GiftSetupScreen/Sources/GiftSetupScreen.swift

@@ -29,6 +29,7 @@ import ChatPresentationInterfaceState
 import AudioToolbox
 import TextFormat
 import InAppPurchaseManager
+import BlurredBackgroundComponent
 
 final class GiftSetupScreenComponent: Component {
     typealias EnvironmentType = ViewControllerComponentContainer.Environment
@@ -78,6 +79,9 @@ final class GiftSetupScreenComponent: Component {
         private let introContent = ComponentView<Empty>()
         private let introSection = ComponentView<Empty>()
         private let hideSection = ComponentView<Empty>()
+    
+        private let buttonBackground = ComponentView<Empty>()
+        private let buttonSeparator = SimpleLayer()
         private let button = ComponentView<Empty>()
         
         private var ignoreScrolling: Bool = false
@@ -356,6 +360,27 @@ final class GiftSetupScreenComponent: Component {
                         }
                         
                         starsContext.load(force: true)
+                    }, error: { [weak self] error in
+                        guard let self, let controller = self.environment?.controller() else {
+                            return
+                        }
+                        
+                        self.inProgress = false
+                        self.state?.updated()
+                        
+                        let presentationData = component.context.sharedContext.currentPresentationData.with { $0 }
+                        var errorText: String?
+                        switch error {
+                        case .starGiftOutOfStock:
+                            errorText = presentationData.strings.Gift_Send_ErrorOutOfStock
+                        default:
+                            errorText = presentationData.strings.Gift_Send_ErrorUnknown
+                        }
+                        
+                        if let errorText = errorText {
+                            let alertController = textAlertController(context: component.context, title: nil, text: errorText, actions: [TextAlertAction(type: .defaultAction, title: presentationData.strings.Common_OK, action: {})])
+                            controller.present(alertController, in: .window(.root))
+                        }
                     })
                 })
             }
@@ -826,6 +851,34 @@ final class GiftSetupScreenComponent: Component {
                 self.starImage = (generateTintedImage(image: UIImage(bundleImageName: "Item List/PremiumIcon"), color: environment.theme.list.itemCheckColors.foregroundColor)!, environment.theme)
             }
 
+            let buttonHeight: CGFloat = 50.0
+            let bottomPanelPadding: CGFloat = 12.0
+            let bottomInset: CGFloat = environment.safeInsets.bottom > 0.0 ? environment.safeInsets.bottom + 5.0 : bottomPanelPadding
+            let bottomPanelHeight = bottomPanelPadding + buttonHeight + bottomInset
+
+            let bottomPanelAlpha: CGFloat = 1.0
+            let bottomPanelSize = self.buttonBackground.update(
+                transition: transition,
+                component: AnyComponent(BlurredBackgroundComponent(
+                    color: environment.theme.rootController.tabBar.backgroundColor
+                )),
+                environment: {},
+                containerSize: CGSize(width: availableSize.width, height: bottomPanelHeight)
+            )
+            self.buttonSeparator.backgroundColor = environment.theme.rootController.tabBar.separatorColor.cgColor
+            self.buttonSeparator.opacity = Float(bottomPanelAlpha)
+            
+            if let view = self.buttonBackground.view {
+                if view.superview == nil {
+                    self.addSubview(view)
+                    self.layer.addSublayer(self.buttonSeparator)
+                }
+                view.alpha = bottomPanelAlpha
+                view.frame = CGRect(origin: CGPoint(x: 0.0, y: availableSize.height - bottomPanelSize.height), size: bottomPanelSize)
+                self.buttonSeparator.frame = CGRect(origin: CGPoint(x: 0.0, y: availableSize.height - bottomPanelSize.height), size: CGSize(width: availableSize.width, height: UIScreenPixel))
+            }
+            
+            var buttonIsEnabled = true
             let buttonString: String
             switch component.subject {
             case let .premium(product):
@@ -834,6 +887,9 @@ final class GiftSetupScreenComponent: Component {
             case let .starGift(starGift):
                 let amountString = presentationStringsFormattedNumber(Int32(starGift.price), presentationData.dateTimeFormat.groupingSeparator)
                 buttonString = "\(environment.strings.Gift_Send_Send)  #  \(amountString)"
+                if let availability = starGift.availability, availability.remains == 0 {
+                    buttonIsEnabled = false
+                }
             }
             
             let buttonAttributedString = NSMutableAttributedString(string: buttonString, font: Font.semibold(17.0), textColor: environment.theme.list.itemCheckColors.foregroundColor, paragraphAlignment: .center)
@@ -856,20 +912,20 @@ final class GiftSetupScreenComponent: Component {
                         id: AnyHashable(0),
                         component: AnyComponent(MultilineTextComponent(text: .plain(buttonAttributedString)))
                     ),
-                    isEnabled: true,
+                    isEnabled: buttonIsEnabled,
                     displaysProgress: self.inProgress,
                     action: { [weak self] in
                         self?.proceed()
                     }
                 )),
                 environment: {},
-                containerSize: CGSize(width: availableSize.width - sideInset * 2.0, height: 50)
+                containerSize: CGSize(width: availableSize.width - sideInset * 2.0, height: buttonHeight)
             )
             if let buttonView = self.button.view {
                 if buttonView.superview == nil {
                     self.addSubview(buttonView)
                 }
-                buttonView.frame = CGRect(origin: CGPoint(x: floor((availableSize.width - buttonSize.width) / 2.0), y: availableSize.height - environment.safeInsets.bottom - buttonSize.height), size: buttonSize)
+                buttonView.frame = CGRect(origin: CGPoint(x: floor((availableSize.width - buttonSize.width) / 2.0), y: availableSize.height - bottomPanelHeight + bottomPanelPadding), size: buttonSize)
             }
             
             if self.textInputState.isEditing, let emojiSuggestion = self.textInputState.currentEmojiSuggestion, emojiSuggestion.disposable == nil {