native functionality bridge

backend/mpmediabridge.m

@@ -1,47 +1,83 @@
 #import "mpmediabridge.h"
 
 /**
- * Native Objective-C function for setting "Now Playing" information on macOS for media playback using the native APIs.
+ * C bridge registering callbacks for media playback events using the native CommandCenter API.
  */
-void setNowPlayingInfoNative(const char *title, const char *artist, double trackDuration, NSImage *artworkImage, double elapsedTime) {
-
-    // TODO: the remove command center logic needs to move
+void register_os_remote_commands() {
     MPRemoteCommandCenter *commandCenter = [MPRemoteCommandCenter sharedCommandCenter];
     [commandCenter.playCommand addTargetWithHandler:^MPRemoteCommandHandlerStatus(MPRemoteCommandEvent * _Nonnull event) {
-        // TODO: Handle play command
+        os_remote_command_callback(PLAY);
         return MPRemoteCommandHandlerStatusSuccess;
     }];
 
     [commandCenter.pauseCommand addTargetWithHandler:^MPRemoteCommandHandlerStatus(MPRemoteCommandEvent * _Nonnull event) {
-        // TODO: Handle pause command
+        os_remote_command_callback(PAUSE);
         return MPRemoteCommandHandlerStatusSuccess;
     }];
 
     [commandCenter.togglePlayPauseCommand addTargetWithHandler:^MPRemoteCommandHandlerStatus(MPRemoteCommandEvent * _Nonnull event) {
-        // TODO: Handle toggle command
+        os_remote_command_callback(TOGGLE);
         return MPRemoteCommandHandlerStatusSuccess;
     }];
 
-    MPNowPlayingInfoCenter *infoCenter = [MPNowPlayingInfoCenter defaultCenter];
+    [commandCenter.stopCommand addTargetWithHandler:^MPRemoteCommandHandlerStatus(MPRemoteCommandEvent * _Nonnull event) {
+        os_remote_command_callback(STOP);
+        return MPRemoteCommandHandlerStatusSuccess;
+    }];
 
+    [commandCenter.nextTrackCommand addTargetWithHandler:^MPRemoteCommandHandlerStatus(MPRemoteCommandEvent * _Nonnull event) {
+        os_remote_command_callback(NEXT_TRACK);
+        return MPRemoteCommandHandlerStatusSuccess;
+    }];
+
+    [commandCenter.previousTrackCommand addTargetWithHandler:^MPRemoteCommandHandlerStatus(MPRemoteCommandEvent * _Nonnull event) {
+        os_remote_command_callback(PREVIOUS_TRACK);
+        return MPRemoteCommandHandlerStatusSuccess;
+    }];
+}
+
+/**
+ * C bridge setting "Now Playing" information on macOS for media playback using the native APIs.
+ */
+void set_os_now_playing_info(const char *title, const char *artist, const char *coverArtFileURL) {
+    NSString *coverArtLocationString = [NSString stringWithUTF8String:coverArtFileURL];
+    NSURL *coverArtURL = [NSURL URLWithString:coverArtLocationString];
+    NSImage *coverArtImage = [[NSImage alloc] initWithContentsOfURL:coverArtURL];
+
+    MPMediaItemArtwork *coverArt = [[MPMediaItemArtwork alloc] initWithBoundsSize:coverArtImage.size requestHandler:^NSImage * _Nonnull(CGSize size) {
+        return coverArtImage;
+    }];
+
+    MPNowPlayingInfoCenter *infoCenter = [MPNowPlayingInfoCenter defaultCenter];
     NSDictionary *nowPlayingInfo = @{
         MPMediaItemPropertyTitle: [NSString stringWithUTF8String:title],
         MPMediaItemPropertyArtist: [NSString stringWithUTF8String:artist],
-        MPMediaItemPropertyPlaybackDuration: @(trackDuration),
-        MPNowPlayingInfoPropertyElapsedPlaybackTime: @(elapsedTime)
+        MPMediaItemPropertyArtwork: coverArt 
     };
     
     infoCenter.nowPlayingInfo = nowPlayingInfo;
+}
+
+/**
+ * C bridge setting the OS playback state to 'playing'.
+ */
+void set_os_playback_state_playing() {
+    MPNowPlayingInfoCenter *infoCenter = [MPNowPlayingInfoCenter defaultCenter];
     infoCenter.playbackState = MPNowPlayingPlaybackStatePlaying;
 }
 
 /**
- * 'C' bridge function for 'setNowPlayingInfoNative'
+ * C bridge setting the OS playback state to 'paused'.
  */
-void setNowPlayingInfo(const char *title, const char *artist) {
-    const char *imagePath = "/path/to/image.png";
-    double trackDuration = 300.0;
-    double elapsedTime = 120.0;
-
-    setNowPlayingInfoNative(title, artist, trackDuration, NULL, elapsedTime);
+void set_os_playback_state_paused() {
+    MPNowPlayingInfoCenter *infoCenter = [MPNowPlayingInfoCenter defaultCenter];
+    infoCenter.playbackState = MPNowPlayingPlaybackStatePaused;
+}
+
+/**
+ * C bridge setting the OS playback state to 'stopped'.
+ */
+void set_os_playback_state_stopped() {
+    MPNowPlayingInfoCenter *infoCenter = [MPNowPlayingInfoCenter defaultCenter];
+    infoCenter.playbackState = MPNowPlayingPlaybackStateStopped;
 }