App: bump minimum OS versions

This allows us to remove a good deal of legacy cruft.

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>

9 files changed, 23 insertions, 112 deletions

diff --git a/Sources/WireGuardApp/UI/iOS/View/KeyValueCell.swift b/Sources/WireGuardApp/UI/iOS/View/KeyValueCell.swift
index e8c3850..3162abf 100644
--- a/Sources/WireGuardApp/UI/iOS/View/KeyValueCell.swift
+++ b/Sources/WireGuardApp/UI/iOS/View/KeyValueCell.swift
@@ -9,11 +9,7 @@ class KeyValueCell: UITableViewCell {
         let keyLabel = UILabel()
         keyLabel.font = UIFont.preferredFont(forTextStyle: .body)
         keyLabel.adjustsFontForContentSizeCategory = true
-        if #available(iOS 13.0, *) {
-            keyLabel.textColor = .label
-        } else {
-            keyLabel.textColor = .black
-        }
+        keyLabel.textColor = .label
         keyLabel.textAlignment = .left
         return keyLabel
     }()
@@ -35,11 +31,7 @@ class KeyValueCell: UITableViewCell {
         valueTextField.autocapitalizationType = .none
         valueTextField.autocorrectionType = .no
         valueTextField.spellCheckingType = .no
-        if #available(iOS 13.0, *) {
-            valueTextField.textColor = .secondaryLabel
-        } else {
-            valueTextField.textColor = .gray
-        }
+        valueTextField.textColor = .secondaryLabel
         return valueTextField
     }()
 
@@ -64,18 +56,10 @@ class KeyValueCell: UITableViewCell {
 
     var isValueValid = true {
         didSet {
-            if #available(iOS 13.0, *) {
-                if isValueValid {
-                    keyLabel.textColor = .label
-                } else {
-                    keyLabel.textColor = .systemRed
-                }
+            if isValueValid {
+                keyLabel.textColor = .label
             } else {
-                if isValueValid {
-                    keyLabel.textColor = .black
-                } else {
-                    keyLabel.textColor = .red
-                }
+                keyLabel.textColor = .systemRed
             }
         }
     }
diff --git a/Sources/WireGuardApp/UI/iOS/View/SwitchCell.swift b/Sources/WireGuardApp/UI/iOS/View/SwitchCell.swift
index 3952ffd..82d3dec 100644
--- a/Sources/WireGuardApp/UI/iOS/View/SwitchCell.swift
+++ b/Sources/WireGuardApp/UI/iOS/View/SwitchCell.swift
@@ -16,11 +16,7 @@ class SwitchCell: UITableViewCell {
         get { return switchView.isEnabled }
         set(value) {
             switchView.isEnabled = value
-            if #available(iOS 13.0, *) {
-                textLabel?.textColor = value ? .label : .secondaryLabel
-            } else {
-                textLabel?.textColor = value ? .black : .gray
-            }
+            textLabel?.textColor = value ? .label : .secondaryLabel
         }
     }
 
diff --git a/Sources/WireGuardApp/UI/iOS/View/TextCell.swift b/Sources/WireGuardApp/UI/iOS/View/TextCell.swift
index 9de5012..5c39512 100644
--- a/Sources/WireGuardApp/UI/iOS/View/TextCell.swift
+++ b/Sources/WireGuardApp/UI/iOS/View/TextCell.swift
@@ -28,11 +28,7 @@ class TextCell: UITableViewCell {
     override func prepareForReuse() {
         super.prepareForReuse()
         message = ""
-        if #available(iOS 13.0, *) {
-            setTextColor(.label)
-        } else {
-            setTextColor(.black)
-        }
+        setTextColor(.label)
         setTextAlignment(.left)
     }
 }
diff --git a/Sources/WireGuardApp/UI/iOS/View/TunnelEditKeyValueCell.swift b/Sources/WireGuardApp/UI/iOS/View/TunnelEditKeyValueCell.swift
index ac6f063..a44af7c 100644
--- a/Sources/WireGuardApp/UI/iOS/View/TunnelEditKeyValueCell.swift
+++ b/Sources/WireGuardApp/UI/iOS/View/TunnelEditKeyValueCell.swift
@@ -30,11 +30,7 @@ class TunnelEditEditableKeyValueCell: TunnelEditKeyValueCell {
         super.init(style: style, reuseIdentifier: reuseIdentifier)
 
         copyableGesture = false
-        if #available(iOS 13.0, *) {
-            valueTextField.textColor = .label
-        } else {
-            valueTextField.textColor = .black
-        }
+        valueTextField.textColor = .label
         valueTextField.isEnabled = true
         valueLabelScrollView.isScrollEnabled = false
         valueTextField.widthAnchor.constraint(equalTo: valueLabelScrollView.widthAnchor).isActive = true
diff --git a/Sources/WireGuardApp/UI/iOS/View/TunnelListCell.swift b/Sources/WireGuardApp/UI/iOS/View/TunnelListCell.swift
index 4dbe97c..97948b8 100644
--- a/Sources/WireGuardApp/UI/iOS/View/TunnelListCell.swift
+++ b/Sources/WireGuardApp/UI/iOS/View/TunnelListCell.swift
@@ -41,21 +41,13 @@ class TunnelListCell: UITableViewCell {
         label.font = UIFont.preferredFont(forTextStyle: .caption2)
         label.adjustsFontForContentSizeCategory = true
         label.numberOfLines = 1
-        if #available(iOS 13.0, *) {
-            label.textColor = .secondaryLabel
-        } else {
-            label.textColor = .gray
-        }
+        label.textColor = .secondaryLabel
         return label
     }()
 
     let busyIndicator: UIActivityIndicatorView = {
         let busyIndicator: UIActivityIndicatorView
-        if #available(iOS 13.0, *) {
-            busyIndicator = UIActivityIndicatorView(style: .medium)
-        } else {
-            busyIndicator = UIActivityIndicatorView(style: .gray)
-        }
+        busyIndicator = UIActivityIndicatorView(style: .medium)
         busyIndicator.hidesWhenStopped = true
         return busyIndicator
     }()
diff --git a/Sources/WireGuardApp/UI/iOS/ViewController/LogViewController.swift b/Sources/WireGuardApp/UI/iOS/ViewController/LogViewController.swift
index eed5e46..4e4a131 100644
--- a/Sources/WireGuardApp/UI/iOS/ViewController/LogViewController.swift
+++ b/Sources/WireGuardApp/UI/iOS/ViewController/LogViewController.swift
@@ -15,15 +15,9 @@ class LogViewController: UIViewController {
     }()
 
     let busyIndicator: UIActivityIndicatorView = {
-        if #available(iOS 13.0, *) {
-            let busyIndicator = UIActivityIndicatorView(style: .medium)
-            busyIndicator.hidesWhenStopped = true
-            return busyIndicator
-        } else {
-            let busyIndicator = UIActivityIndicatorView(style: .gray)
-            busyIndicator.hidesWhenStopped = true
-            return busyIndicator
-        }
+        let busyIndicator = UIActivityIndicatorView(style: .medium)
+        busyIndicator.hidesWhenStopped = true
+        return busyIndicator
     }()
 
     let paragraphStyle: NSParagraphStyle = {
@@ -41,12 +35,7 @@ class LogViewController: UIViewController {
 
     override func loadView() {
         view = UIView()
-        if #available(iOS 13.0, *) {
-            view.backgroundColor = .systemBackground
-        } else {
-            view.backgroundColor = .white
-        }
-
+        view.backgroundColor = .systemBackground
         view.addSubview(textView)
         textView.translatesAutoresizingMaskIntoConstraints = false
         NSLayoutConstraint.activate([
@@ -92,15 +81,8 @@ class LogViewController: UIViewController {
             let bodyFont = UIFont.preferredFont(forTextStyle: UIFont.TextStyle.body)
             let captionFont = UIFont.preferredFont(forTextStyle: UIFont.TextStyle.caption1)
             for logEntry in fetchedLogEntries {
-                var bgColor: UIColor
-                var fgColor: UIColor
-                if #available(iOS 13.0, *) {
-                    bgColor = self.isNextLineHighlighted ? .systemGray3 : .systemBackground
-                    fgColor = .label
-                } else {
-                    bgColor = self.isNextLineHighlighted ? UIColor(white: 0.88, alpha: 1.0) : UIColor.white
-                    fgColor = .black
-                }
+                let bgColor: UIColor = self.isNextLineHighlighted ? .systemGray3 : .systemBackground
+                let fgColor: UIColor = .label
                 let timestampText = NSAttributedString(string: logEntry.timestamp + "\n", attributes: [.font: captionFont, .backgroundColor: bgColor, .foregroundColor: fgColor, .paragraphStyle: self.paragraphStyle])
                 let messageText = NSAttributedString(string: logEntry.message + "\n", attributes: [.font: bodyFont, .backgroundColor: bgColor, .foregroundColor: fgColor, .paragraphStyle: self.paragraphStyle])
                 richText.append(timestampText)
diff --git a/Sources/WireGuardApp/UI/iOS/ViewController/MainViewController.swift b/Sources/WireGuardApp/UI/iOS/ViewController/MainViewController.swift
index b780517..eb1f91a 100644
--- a/Sources/WireGuardApp/UI/iOS/ViewController/MainViewController.swift
+++ b/Sources/WireGuardApp/UI/iOS/ViewController/MainViewController.swift
@@ -11,11 +11,7 @@ class MainViewController: UISplitViewController {
 
     init() {
         let detailVC = UIViewController()
-        if #available(iOS 13.0, *) {
-            detailVC.view.backgroundColor = .systemBackground
-        } else {
-            detailVC.view.backgroundColor = .white
-        }
+        detailVC.view.backgroundColor = .systemBackground
         let detailNC = UINavigationController(rootViewController: detailVC)
 
         let masterVC = TunnelsListTableViewController()
diff --git a/Sources/WireGuardApp/UI/iOS/ViewController/SSIDOptionEditTableViewController.swift b/Sources/WireGuardApp/UI/iOS/ViewController/SSIDOptionEditTableViewController.swift
index d32fa8c..072e86a 100644
--- a/Sources/WireGuardApp/UI/iOS/ViewController/SSIDOptionEditTableViewController.swift
+++ b/Sources/WireGuardApp/UI/iOS/ViewController/SSIDOptionEditTableViewController.swift
@@ -185,11 +185,7 @@ extension SSIDOptionEditTableViewController {
     private func noSSIDsCell(for tableView: UITableView, at indexPath: IndexPath) -> UITableViewCell {
         let cell: TextCell = tableView.dequeueReusableCell(for: indexPath)
         cell.message = tr("tunnelOnDemandNoSSIDs")
-        if #available(iOS 13.0, *) {
-            cell.setTextColor(.secondaryLabel)
-        } else {
-            cell.setTextColor(.gray)
-        }
+        cell.setTextColor(.secondaryLabel)
         cell.setTextAlignment(.center)
         return cell
     }
@@ -268,23 +264,8 @@ extension SSIDOptionEditTableViewController {
         #if targetEnvironment(simulator)
         completionHandler("Simulator Wi-Fi")
         #else
-        if #available(iOS 14, *) {
-            NEHotspotNetwork.fetchCurrent { hotspotNetwork in
-                completionHandler(hotspotNetwork?.ssid)
-            }
-        } else {
-            if let supportedInterfaces = CNCopySupportedInterfaces() as? [CFString] {
-                for interface in supportedInterfaces {
-                    if let networkInfo = CNCopyCurrentNetworkInfo(interface) {
-                        if let ssid = (networkInfo as NSDictionary)[kCNNetworkInfoKeySSID as String] as? String {
-                            completionHandler(!ssid.isEmpty ? ssid : nil)
-                            return
-                        }
-                    }
-                }
-            }
-
-            completionHandler(nil)
+        NEHotspotNetwork.fetchCurrent { hotspotNetwork in
+            completionHandler(hotspotNetwork?.ssid)
         }
         #endif
     }
diff --git a/Sources/WireGuardApp/UI/iOS/ViewController/TunnelsListTableViewController.swift b/Sources/WireGuardApp/UI/iOS/ViewController/TunnelsListTableViewController.swift
index 85e64ce..95d4504 100644
--- a/Sources/WireGuardApp/UI/iOS/ViewController/TunnelsListTableViewController.swift
+++ b/Sources/WireGuardApp/UI/iOS/ViewController/TunnelsListTableViewController.swift
@@ -33,11 +33,7 @@ class TunnelsListTableViewController: UIViewController {
 
     let busyIndicator: UIActivityIndicatorView = {
         let busyIndicator: UIActivityIndicatorView
-        if #available(iOS 13.0, *) {
-            busyIndicator = UIActivityIndicatorView(style: .medium)
-        } else {
-            busyIndicator = UIActivityIndicatorView(style: .gray)
-        }
+        busyIndicator = UIActivityIndicatorView(style: .medium)
         busyIndicator.hidesWhenStopped = true
         return busyIndicator
     }()
@@ -51,11 +47,7 @@ class TunnelsListTableViewController: UIViewController {
 
     override func loadView() {
         view = UIView()
-        if #available(iOS 13.0, *) {
-            view.backgroundColor = .systemBackground
-        } else {
-            view.backgroundColor = .white
-        }
+        view.backgroundColor = .systemBackground
 
         tableView.dataSource = self
         tableView.delegate = self
@@ -406,11 +398,7 @@ extension TunnelsListTableViewController: TunnelsManagerListDelegate {
                 (splitViewController.viewControllers[0] as? UINavigationController)?.popToRootViewController(animated: false)
             } else {
                 let detailVC = UIViewController()
-                if #available(iOS 13.0, *) {
-                    detailVC.view.backgroundColor = .systemBackground
-                } else {
-                    detailVC.view.backgroundColor = .white
-                }
+                detailVC.view.backgroundColor = .systemBackground
                 let detailNC = UINavigationController(rootViewController: detailVC)
                 splitViewController.showDetailViewController(detailNC, sender: self)
             }