refactor(*): Upgrade to Swift 5

iOS/WAStickersThirdParty.xcodeproj/project.pbxproj

@@ -327,7 +327,7 @@
 				TargetAttributes = {
 					8A22EDFF1F9A9F40003A7F21 = {
 						CreatedOnToolsVersion = 9.0;
-						LastSwiftMigration = 0910;
+						LastSwiftMigration = 1120;
 						ProvisioningStyle = Automatic;
 						SystemCapabilities = {
 							com.apple.ApplicationGroups.iOS = {
@@ -580,7 +580,7 @@
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_OBJC_BRIDGING_HEADER = "WAStickersThirdParty/WAStickersThirdParty-Bridging-Header.h";
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 5.0;
 				TARGETED_DEVICE_FAMILY = 1;
 			};
 			name = Debug;
@@ -603,7 +603,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = WA.WAStickersThirdParty;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_OBJC_BRIDGING_HEADER = "WAStickersThirdParty/WAStickersThirdParty-Bridging-Header.h";
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 5.0;
 				TARGETED_DEVICE_FAMILY = 1;
 			};
 			name = Release;

iOS/WAStickersThirdParty/AppDelegate.swift

@@ -13,7 +13,7 @@ class AppDelegate: UIResponder, UIApplicationDelegate {
 
     var window: UIWindow?
 
-    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
+    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
         // Override point for customization after application launch.
         return true
     }

iOS/WAStickersThirdParty/Interoperability.swift

@@ -37,7 +37,7 @@ struct Interoperability {
         }
 
         if #available(iOS 10.0, *) {
-            pasteboard.setItems([[PasteboardStickerPackDataType: dataToSend]], options: [UIPasteboardOption.localOnly: true, UIPasteboardOption.expirationDate: NSDate(timeIntervalSinceNow: PasteboardExpirationSeconds)])
+            pasteboard.setItems([[PasteboardStickerPackDataType: dataToSend]], options: [UIPasteboard.OptionsKey.localOnly: true, UIPasteboard.OptionsKey.expirationDate: NSDate(timeIntervalSinceNow: PasteboardExpirationSeconds)])
         } else {
             pasteboard.setData(dataToSend, forPasteboardType: PasteboardStickerPackDataType)
         }

iOS/WAStickersThirdParty/StickerPack.swift

@@ -184,7 +184,7 @@ class StickerPack {
             json["identifier"] = self.identifier
             json["name"] = self.name
             json["publisher"] = self.publisher
-            json["tray_image"] = UIImagePNGRepresentation(self.trayImage.image!)?.base64EncodedString()
+            json["tray_image"] = self.trayImage.image!.pngData()?.base64EncodedString()
 
             var stickersArray: [[String: Any]] = []
             for sticker in self.stickers {

iOS/WAStickersThirdParty/StickerPackInfoViewController.swift

@@ -27,7 +27,7 @@ class StickerPackInfoViewController: UITableViewController {
             insets = tableView.safeAreaInsets
         }
         footerView.label.preferredMaxLayoutWidth = footerView.preferredLabelLayoutWidth(viewWidth: tableView.bounds.size.width - FooterView.MARGIN * 2 - insets.left - insets.right)
-        return ceil(footerView.systemLayoutSizeFitting(UILayoutFittingCompressedSize).height)
+        return ceil(footerView.systemLayoutSizeFitting(UIView.layoutFittingCompressedSize).height)
     }
 
     var stickerPack: StickerPack!

iOS/WAStickersThirdParty/StickerPackViewController.swift

@@ -94,6 +94,8 @@ class StickerPackViewController: UIViewController, UICollectionViewDataSource, U
         let buttonLandscapeSize: CGSize = CGSize(width: 250.0, height: 50.0)
         let buttonBottomMargin: CGFloat = 20.0
 
+        guard let view = view else { return }
+
         // Share button constraints
         view.addConstraint(NSLayoutConstraint(item: view, attribute: .bottomMargin, relatedBy: .equal, toItem: shareButton, attribute: .bottom, multiplier: 1.0, constant: buttonBottomMargin))
         let centerPortraitShareConstraint = NSLayoutConstraint(item: view, attribute: .centerXWithinMargins, relatedBy: .equal, toItem: shareButton, attribute: .centerXWithinMargins, multiplier: 1.0, constant: 0.0)

iOS/WAStickersThirdParty/UIAlertController+Additions.swift

@@ -10,7 +10,7 @@ import UIKit
 
 extension UIAlertController {
     func addSpinner() {
-        let activity: UIActivityIndicatorView = UIActivityIndicatorView(activityIndicatorStyle: .gray)
+        let activity: UIActivityIndicatorView = UIActivityIndicatorView(style: .gray)
         view.addSubview(activity)
 
         activity.translatesAutoresizingMaskIntoConstraints = false