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Model/Player/Backends/PlayerBackend.swift

@@ -0,0 +1,67 @@
+import CoreMedia
+import Defaults
+import Foundation
+
+protocol PlayerBackend {
+    var model: PlayerModel! { get set }
+    var controls: PlayerControlsModel! { get set }
+
+    var stream: Stream? { get set }
+    var video: Video? { get set }
+    var currentTime: CMTime? { get }
+
+    var loadedVideo: Bool { get }
+    var isLoadingVideo: Bool { get }
+
+    var isPlaying: Bool { get }
+    var playerItemDuration: CMTime? { get }
+
+    func bestPlayable(_ streams: [Stream]) -> Stream?
+    func canPlay(_ stream: Stream) -> Bool
+
+    func playStream(
+        _ stream: Stream,
+        of video: Video,
+        preservingTime: Bool,
+        upgrading: Bool
+    )
+
+    func play()
+    func pause()
+    func togglePlay()
+
+    func stop()
+
+    func seek(to time: CMTime, completionHandler: ((Bool) -> Void)?)
+    func seek(to seconds: Double, completionHandler: ((Bool) -> Void)?)
+    func seek(relative time: CMTime, completionHandler: ((Bool) -> Void)?)
+
+    func setRate(_ rate: Float)
+
+    func closeItem()
+
+    func enterFullScreen()
+    func exitFullScreen()
+
+    func closePiP(wasPlaying: Bool)
+
+    func updateControls()
+    func startControlsUpdates()
+    func stopControlsUpdates()
+
+    func setNeedsDrawing(_ needsDrawing: Bool)
+}
+
+extension PlayerBackend {
+    func seek(to time: CMTime, completionHandler: ((Bool) -> Void)? = nil) {
+        seek(to: time, completionHandler: completionHandler)
+    }
+
+    func seek(to seconds: Double, completionHandler: ((Bool) -> Void)? = nil) {
+        seek(to: .secondsInDefaultTimescale(seconds), completionHandler: completionHandler)
+    }
+
+    func seek(relative time: CMTime, completionHandler: ((Bool) -> Void)? = nil) {
+        seek(relative: time, completionHandler: completionHandler)
+    }
+}