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Pods/SwiftEntryKit/Source/Model/EntryAttributes/EKAttributes+StatusBar.swift

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+//
+//  EKAttributes+StatusBar.swift
+//  SwiftEntryKit
+//
+//  Created by Daniel Huri on 5/25/18.
+//  Copyright (c) 2018 huri000@gmail.com. All rights reserved.
+//
+
+import UIKit
+
+public extension EKAttributes {
+    
+    /** Status bar appearance */
+    enum StatusBar {
+        
+        /** The appearance of the status bar */
+        public typealias Appearance = (visible: Bool, style: UIStatusBarStyle)
+        
+        /** Ignored. Status bar is ignored by entries with this apperance value*/
+        case ignored
+        
+        /** Hidden. Doesn't apply to iPhone X */
+        case hidden
+        
+        /** Visible with explicit dark style */
+        case dark
+        
+        /** Visible with explicit light style */
+        case light
+        
+        /** Keep previous state of status bar.
+         In case there is an already displayed entry, keep its status bar appearance.
+         In case the app is already displaying a status bar, keep its appearance */
+        case inferred
+        
+        /** Returns the status bar appearance.
+         Note: See *Appearance* */
+        public var appearance: Appearance {
+            switch self {
+            case .dark:
+                if #available(iOS 13, *) {
+                    return (true, .darkContent)
+                } else {
+                    return (true, .default)
+                }
+            case .light:
+                return (true, .lightContent)
+            case .inferred:
+                return StatusBar.currentAppearance
+            case .hidden:
+                return (false, StatusBar.currentStyle)
+            case .ignored:
+                fatalError("There is no defined appearance for an ignored status bar")
+            }
+        }
+        
+        /** Returns the status bar according to a given appearance */
+        public static func statusBar(by appearance: Appearance) -> StatusBar {
+            guard appearance.visible else {
+                return .hidden
+            }
+            switch appearance.style {
+            case .lightContent:
+                return .light
+            default:
+                return .dark
+            }
+        }
+        
+        /** Returns the current appearance */
+        public static var currentAppearance: Appearance {
+            return (StatusBar.isCurrentVisible, StatusBar.currentStyle)
+        }
+        
+        /** Returns the current status bar */
+        public static var currentStatusBar: StatusBar {
+            return statusBar(by: currentAppearance)
+        }
+        
+        // Accessors
+        // TODO: Use `statusBarManager` of the window scene on iOS 13
+        private static var currentStyle: UIStatusBarStyle {
+            return UIApplication.shared.statusBarStyle
+        }
+        
+        // TODO: Use `statusBarManager` of the window scene on iOS 13
+        private static var isCurrentVisible: Bool {
+            return !UIApplication.shared.isStatusBarHidden
+        }
+    }
+}