video: add VideoController, which hold cached metadata and mute states

Closes: https://github.com/damus-io/damus/pull/1539
Reviewed-by: William Casarin <jb55@jb55.com>
Signed-off-by: William Casarin <jb55@jb55.com>

damus.xcodeproj/project.pbxproj

@@ -389,6 +389,7 @@
 		504323A92A3495B6006AE6DC /* RelayModelCache.swift in Sources */ = {isa = PBXBuildFile; fileRef = 504323A82A3495B6006AE6DC /* RelayModelCache.swift */; };
 		5053ACA72A56DF3B00851AE3 /* DeveloperSettingsView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 5053ACA62A56DF3B00851AE3 /* DeveloperSettingsView.swift */; };
 		50A16FFB2AA6C06600DFEC1F /* AVPlayerView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 50A16FFA2AA6C06600DFEC1F /* AVPlayerView.swift */; };
+		50A16FFF2AA76A0900DFEC1F /* VideoController.swift in Sources */ = {isa = PBXBuildFile; fileRef = 50A16FFE2AA76A0900DFEC1F /* VideoController.swift */; };
 		50A50A8D29A09E1C00C01BE7 /* RequestTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = 50A50A8C29A09E1C00C01BE7 /* RequestTests.swift */; };
 		50A60D142A28BEEE00186190 /* RelayLog.swift in Sources */ = {isa = PBXBuildFile; fileRef = 50A60D132A28BEEE00186190 /* RelayLog.swift */; };
 		50B5685329F97CB400A23243 /* CredentialHandler.swift in Sources */ = {isa = PBXBuildFile; fileRef = 50B5685229F97CB400A23243 /* CredentialHandler.swift */; };
@@ -1065,6 +1066,7 @@
 		504323A82A3495B6006AE6DC /* RelayModelCache.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = RelayModelCache.swift; sourceTree = "<group>"; };
 		5053ACA62A56DF3B00851AE3 /* DeveloperSettingsView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = DeveloperSettingsView.swift; sourceTree = "<group>"; };
 		50A16FFA2AA6C06600DFEC1F /* AVPlayerView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AVPlayerView.swift; sourceTree = "<group>"; };
+		50A16FFE2AA76A0900DFEC1F /* VideoController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = VideoController.swift; sourceTree = "<group>"; };
 		50A50A8C29A09E1C00C01BE7 /* RequestTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = RequestTests.swift; sourceTree = "<group>"; };
 		50A60D132A28BEEE00186190 /* RelayLog.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = RelayLog.swift; sourceTree = "<group>"; };
 		50B5685229F97CB400A23243 /* CredentialHandler.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = CredentialHandler.swift; sourceTree = "<group>"; };
@@ -1360,6 +1362,7 @@
 			isa = PBXGroup;
 			children = (
 				4C1A9A2929DDF54400516EAC /* DamusVideoPlayer.swift */,
+				50A16FFE2AA76A0900DFEC1F /* VideoController.swift */,
 				4CCF9AAE2A1FDBDB00E03CFB /* VideoPlayer.swift */,
 				50A16FFA2AA6C06600DFEC1F /* AVPlayerView.swift */,
 			);
@@ -2621,6 +2624,7 @@
 				4CEE2AF7280B2DEA00AB5EEF /* ProfileName.swift in Sources */,
 				4CC7AAEB297F0AEC00430951 /* BuilderEventView.swift in Sources */,
 				31D2E847295218AF006D67F8 /* Shimmer.swift in Sources */,
+				50A16FFF2AA76A0900DFEC1F /* VideoController.swift in Sources */,
 				F7908E97298B1FDF00AB113A /* NIPURLBuilder.swift in Sources */,
 				4C285C8228385570008A31F1 /* CarouselView.swift in Sources */,
 				3A3040F129A8FF97008A0F29 /* LocalizationUtil.swift in Sources */,

damus/ContentView.swift

@@ -654,7 +654,8 @@ struct ContentView: View {
                                       wallet: WalletModel(settings: settings),
                                       nav: self.navigationCoordinator,
                                       user_search_cache: user_search_cache,
-                                      music: MusicController(onChange: music_changed)
+                                      music: MusicController(onChange: music_changed),
+                                      video: VideoController()
         )
         home.damus_state = self.damus_state!
         

damus/Models/DamusState.swift

@@ -33,6 +33,7 @@ struct DamusState {
     let nav: NavigationCoordinator
     let user_search_cache: UserSearchCache
     let music: MusicController?
+    let video: VideoController
 
     @discardableResult
     func add_zap(zap: Zapping) -> Bool {
@@ -89,7 +90,8 @@ struct DamusState {
             wallet: WalletModel(settings: UserSettingsStore()),
             nav: NavigationCoordinator(),
             user_search_cache: user_search_cache,
-            music: nil
+            music: nil,
+            video: VideoController()
         )
     }
 }

damus/Views/Video/VideoController.swift

@@ -0,0 +1,40 @@
+//
+//  VideoController.swift
+//  damus
+//
+//  Created by Bryan Montz on 9/3/23.
+//
+
+import Combine
+import Foundation
+
+struct VideoMetadata {
+    let has_audio: Bool
+    let size: CGSize
+}
+
+final class VideoController: ObservableObject {
+    private var mute_states: [URL: Bool] = [:]
+    private var metadatas: [URL: VideoMetadata] = [:]
+    
+    @Published var focused_model_id: UUID?
+    
+    func toggle_should_mute_video(url: URL) {
+        let state = mute_states[url] ?? true
+        mute_states[url] = !state
+        
+        objectWillChange.send()
+    }
+    
+    func should_mute_video(url: URL) -> Bool {
+        mute_states[url] ?? true
+    }
+    
+    func set_metadata(_ metadata: VideoMetadata, url: URL) {
+        metadatas[url] = metadata
+    }
+    
+    func metadata(for url: URL) -> VideoMetadata? {
+        metadatas[url]
+    }
+}