From 010e7162fd86ee61404d79061eb8d58dffa039b1 Mon Sep 17 00:00:00 2001
From: Gary Wang <git@blumia.net>
Date: Sun, 20 Jul 2025 00:34:04 +0800
Subject: [PATCH] playlist: add basic m3u8 support

---
 mainwindow.cpp      | 14 +++++++++++---
 playlistmanager.cpp | 34 ++++++++++++++++++++++++++++++++--
 playlistmanager.h   |  3 +++
 3 files changed, 46 insertions(+), 5 deletions(-)

diff --git a/mainwindow.cpp b/mainwindow.cpp
index 6e6027e..352333a 100644
--- a/mainwindow.cpp
+++ b/mainwindow.cpp
@@ -261,6 +261,15 @@ void MainWindow::dropEvent(QDropEvent *e)
         return;
     }
 
+    if (fileName.endsWith(".m3u") || fileName.endsWith(".m3u8")) {
+        const QModelIndex & modelIndex = m_playlistManager->loadM3U8Playlist(urls.constFirst());
+        if (modelIndex.isValid()) {
+            loadByModelIndex(modelIndex);
+            play();
+        }
+        return;
+    }
+
     const QModelIndex & modelIndex = m_playlistManager->loadPlaylist(urls);
     if (modelIndex.isValid()) {
         loadByModelIndex(modelIndex);
@@ -292,9 +301,8 @@ void MainWindow::loadFile()
         urlList.append(QUrl::fromLocalFile(fileName));
     }
 
-    m_playlistManager->loadPlaylist(urlList);
-    const QUrl & firstUrl = urlList.first();
-    loadFile(firstUrl);
+    const QModelIndex & modelIndex = m_playlistManager->loadPlaylist(urlList);
+    loadByModelIndex(modelIndex);
 }
 
 void MainWindow::loadFile(const QUrl &url)
diff --git a/playlistmanager.cpp b/playlistmanager.cpp
index c3a17ac..e3dafd7 100644
--- a/playlistmanager.cpp
+++ b/playlistmanager.cpp
@@ -186,6 +186,26 @@ QModelIndex PlaylistManager::loadPlaylist(const QUrl &url)
     return idx;
 }
 
+QModelIndex PlaylistManager::loadM3U8Playlist(const QUrl &url)
+{
+    QFile file(url.toLocalFile());
+    if (file.open(QIODevice::ReadOnly | QIODevice::Text)) {
+        QList<QUrl> urls;
+        while (!file.atEnd()) {
+            QString line = file.readLine();
+            if (line.startsWith('#')) {
+                continue;
+            }
+            QFileInfo fileInfo(file);
+            QUrl item = QUrl::fromUserInput(line, fileInfo.absolutePath());
+            urls.append(item);
+        }
+        return loadPlaylist(urls);
+    } else {
+        return {};
+    }
+}
+
 int PlaylistManager::totalCount() const
 {
     return m_model.rowCount();
@@ -196,7 +216,7 @@ QModelIndex PlaylistManager::previousIndex() const
     int count = totalCount();
     if (count == 0) return {};
 
-    return m_model.index(m_currentIndex - 1 < 0 ? count - 1 : m_currentIndex - 1);
+    return m_model.index(isFirstIndex() ? count - 1 : m_currentIndex - 1);
 }
 
 QModelIndex PlaylistManager::nextIndex() const
@@ -204,7 +224,7 @@ QModelIndex PlaylistManager::nextIndex() const
     int count = totalCount();
     if (count == 0) return {};
 
-    return m_model.index(m_currentIndex + 1 == count ? 0 : m_currentIndex + 1);
+    return m_model.index(isLastIndex() ? 0 : m_currentIndex + 1);
 }
 
 QModelIndex PlaylistManager::curIndex() const
@@ -212,6 +232,16 @@ QModelIndex PlaylistManager::curIndex() const
     return m_model.index(m_currentIndex);
 }
 
+bool PlaylistManager::isFirstIndex() const
+{
+    return m_currentIndex == 0;
+}
+
+bool PlaylistManager::isLastIndex() const
+{
+    return m_currentIndex + 1 == totalCount();
+}
+
 void PlaylistManager::setCurrentIndex(const QModelIndex &index)
 {
     if (index.isValid() && index.row() >= 0 && index.row() < totalCount()) {
diff --git a/playlistmanager.h b/playlistmanager.h
index 9fe8b5b..6d496ef 100644
--- a/playlistmanager.h
+++ b/playlistmanager.h
@@ -61,11 +61,14 @@ public:
     void setPlaylist(const QList<QUrl> & url);
     Q_INVOKABLE QModelIndex loadPlaylist(const QList<QUrl> & urls);
     Q_INVOKABLE QModelIndex loadPlaylist(const QUrl & url);
+    Q_INVOKABLE QModelIndex loadM3U8Playlist(const QUrl & url);
 
     int totalCount() const;
     QModelIndex previousIndex() const;
     QModelIndex nextIndex() const;
     QModelIndex curIndex() const;
+    bool isFirstIndex() const;
+    bool isLastIndex() const;
     void setCurrentIndex(const QModelIndex & index);
     QUrl urlByIndex(const QModelIndex & index);
     QString localFileByIndex(const QModelIndex & index);