From d99fae333aecff048a1cbfd987d5b1978d159d2f Mon Sep 17 00:00:00 2001
From: Tobias Fella <fella@posteo.de>
Date: Sun, 18 Feb 2024 21:34:15 +0100
Subject: [PATCH] Introduce MediaManager

Currently, this is only to pause playback of other media when something new starts playing.
In the future, it will also be used for other things, like call ringing, etc.
---
 src/CMakeLists.txt         |  2 ++
 src/mediamanager.cpp       |  9 ++++++++
 src/mediamanager.h         | 42 ++++++++++++++++++++++++++++++++++++++
 src/qml/AudioComponent.qml | 10 +++++++++
 src/qml/VideoComponent.qml | 16 ++++++++++++++-
 5 files changed, 78 insertions(+), 1 deletion(-)
 create mode 100644 src/mediamanager.cpp
 create mode 100644 src/mediamanager.h

diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 6879eebc4..8727c0efc 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -161,6 +161,8 @@ add_library(neochat STATIC
     enums/neochatroomtype.h
     models/sortfilterroomtreemodel.cpp
     models/sortfilterroomtreemodel.h
+    mediamanager.cpp
+    mediamanager.h
 )
 
 qt_add_qml_module(neochat URI org.kde.neochat NO_PLUGIN
diff --git a/src/mediamanager.cpp b/src/mediamanager.cpp
new file mode 100644
index 000000000..e82f3b5f0
--- /dev/null
+++ b/src/mediamanager.cpp
@@ -0,0 +1,9 @@
+// SPDX-FileCopyrightText: 2023 Tobias Fella <tobias.fella@kde.org>
+// SPDX-License-Identifier: LGPL-2.0-or-later
+
+#include "mediamanager.h"
+
+void MediaManager::startPlayback()
+{
+    Q_EMIT playbackStarted();
+}
diff --git a/src/mediamanager.h b/src/mediamanager.h
new file mode 100644
index 000000000..b5386c73f
--- /dev/null
+++ b/src/mediamanager.h
@@ -0,0 +1,42 @@
+// SPDX-FileCopyrightText: 2023 Tobias Fella <tobias.fella@kde.org>
+// SPDX-License-Identifier: LGPL-2.0-or-later
+
+#pragma once
+
+#include <QObject>
+#include <QQmlEngine>
+
+/**
+ * @class MediaManager
+ *
+ * Manages media playback, like voice/audio messages, videos, etc.
+ */
+class MediaManager : public QObject
+{
+    Q_OBJECT
+    QML_ELEMENT
+    QML_SINGLETON
+
+public:
+    static MediaManager &instance()
+    {
+        static MediaManager _instance;
+        return _instance;
+    }
+    static MediaManager *create(QQmlEngine *, QJSEngine *)
+    {
+        QQmlEngine::setObjectOwnership(&instance(), QQmlEngine::CppOwnership);
+        return &instance();
+    }
+
+    /**
+     * @brief Notify other objects that media playback has started.
+     */
+    Q_INVOKABLE void startPlayback();
+
+Q_SIGNALS:
+    /**
+     * @brief Emitted when any media player starts playing. Other objects should stop / pause playback.
+     */
+    void playbackStarted();
+};
diff --git a/src/qml/AudioComponent.qml b/src/qml/AudioComponent.qml
index dbcfb9e07..fee3a6017 100644
--- a/src/qml/AudioComponent.qml
+++ b/src/qml/AudioComponent.qml
@@ -105,6 +105,7 @@ ColumnLayout {
                 icon.name: "media-playback-start"
                 onClicked: {
                     audio.source = root.fileTransferInfo.localPath;
+                    MediaManager.startPlayback();
                     audio.play();
                 }
             }
@@ -123,6 +124,15 @@ ColumnLayout {
         }
     ]
 
+    Connections {
+        target: MediaManager
+        function onPlaybackStarted() {
+            if (audio.playbackState === MediaPlayer.PlayingState) {
+                audio.pause();
+            }
+        }
+    }
+
     RowLayout {
         QQC2.ToolButton {
             id: playButton
diff --git a/src/qml/VideoComponent.qml b/src/qml/VideoComponent.qml
index 025bddb94..d8f5d362c 100644
--- a/src/qml/VideoComponent.qml
+++ b/src/qml/VideoComponent.qml
@@ -118,7 +118,10 @@ Video {
             PropertyChanges {
                 target: playButton
                 icon.name: "media-playback-start"
-                onClicked: root.play()
+                onClicked: {
+                    MediaManager.startPlayback();
+                    root.play();
+                }
             }
         },
         State {
@@ -136,6 +139,15 @@ Video {
         }
     ]
 
+    Connections {
+        target: MediaManager
+        function onPlaybackStarted() {
+            if (root.playbackState === MediaPlayer.PlayingState) {
+                root.pause();
+            }
+        }
+    }
+
     Image {
         id: mediaThumbnail
         anchors.fill: parent
@@ -350,6 +362,7 @@ Video {
             if (root.playbackState == MediaPlayer.PlayingState) {
                 root.pause();
             } else {
+                MediaManager.startPlayback();
                 root.play();
             }
         } else {
@@ -375,6 +388,7 @@ Video {
 
     function playSavedFile() {
         root.stop();
+        MediaManager.startPlayback();
         root.play();
     }
 }