Show system messages when users join/leave room

desktop-client/lobby_widget.py

@@ -0,0 +1,175 @@
+import os
+from PyQt6.QtWidgets import (
+    QWidget, QVBoxLayout, QHBoxLayout, QLabel, QLineEdit, QPushButton, 
+    QFileDialog, QFrame
+)
+from PyQt6.QtCore import Qt, pyqtSignal
+
+class LobbyWidget(QWidget):
+    # Signals to communicate to VlcSyncApp
+    create_requested = pyqtSignal(str, str, str, object)  # username, path, filename, size
+    join_requested = pyqtSignal(str, str)              # username, room_code
+    
+    def __init__(self):
+        super().__init__()
+        self.setAcceptDrops(True)
+        
+        self.local_file_path = None
+        self.local_file_name = None
+        self.local_file_size = 0
+        
+        self._setup_ui()
+        
+    def _setup_ui(self):
+        layout = QVBoxLayout(self)
+        layout.setAlignment(Qt.AlignmentFlag.AlignCenter)
+        
+        # Container for centering
+        container = QFrame()
+        container.setObjectName("lobbyCard")
+        container.setFixedWidth(500)
+        container_layout = QVBoxLayout(container)
+        container_layout.setContentsMargins(30, 30, 30, 30)
+        container_layout.setSpacing(15)
+
+        # Brand
+        title = QLabel("VideoSync")
+        title.setObjectName("brandTitle")
+        title.setAlignment(Qt.AlignmentFlag.AlignCenter)
+        tagline = QLabel("Watch together, anywhere")
+        tagline.setObjectName("brandTagline")
+        tagline.setAlignment(Qt.AlignmentFlag.AlignCenter)
+        
+        container_layout.addWidget(title)
+        container_layout.addWidget(tagline)
+        container_layout.addSpacing(20)
+
+        # Username
+        self.username_input = QLineEdit()
+        self.username_input.setPlaceholderText("Enter a display name")
+        container_layout.addWidget(QLabel("YOUR NAME"))
+        container_layout.addWidget(self.username_input)
+        
+        container_layout.addSpacing(20)
+        
+        # Actions Layout (Create vs Join)
+        actions_layout = QHBoxLayout()
+        actions_layout.setSpacing(20)
+        
+        # Create Room Panel
+        create_panel = QVBoxLayout()
+        create_panel.addWidget(QLabel("Create a Room"))
+        self.create_file_btn = QPushButton("Choose Video File")
+        self.create_file_btn.setObjectName("secondaryBtn")
+        self.create_file_btn.clicked.connect(self.select_file)
+        
+        self.create_file_info = QLabel("")
+        self.create_file_info.setObjectName("fileInfo")
+        self.create_file_info.setWordWrap(True)
+        self.create_file_info.hide()
+        
+        self.create_room_btn = QPushButton("Create Room")
+        self.create_room_btn.setObjectName("primaryBtn")
+        self.create_room_btn.setEnabled(False)
+        self.create_room_btn.clicked.connect(self.create_room)
+        
+        create_panel.addWidget(self.create_file_btn)
+        create_panel.addWidget(self.create_file_info)
+        create_panel.addWidget(self.create_room_btn)
+        
+        # Join Room Panel
+        join_panel = QVBoxLayout()
+        join_panel.addWidget(QLabel("Join a Room"))
+        self.room_code_input = QLineEdit()
+        self.room_code_input.setPlaceholderText("e.g. ABC123")
+        self.join_room_btn = QPushButton("Join Room")
+        self.join_room_btn.setObjectName("secondaryBtn")
+        self.join_room_btn.setEnabled(False)
+        self.join_room_btn.clicked.connect(self.join_room)
+        
+        join_panel.addWidget(self.room_code_input)
+        join_panel.addWidget(self.join_room_btn)
+        
+        actions_layout.addLayout(create_panel)
+        
+        # Divider
+        divider = QLabel("OR")
+        divider.setAlignment(Qt.AlignmentFlag.AlignCenter)
+        divider.setObjectName("divider")
+        actions_layout.addWidget(divider)
+        
+        actions_layout.addLayout(join_panel)
+        
+        container_layout.addLayout(actions_layout)
+        layout.addWidget(container)
+
+        # Signals to enable/disable buttons
+        self.username_input.textChanged.connect(self.check_inputs)
+        self.room_code_input.textChanged.connect(self.check_inputs)
+
+    def _set_local_file(self, file_path: str):
+        self.local_file_path = file_path
+        self.local_file_name = os.path.basename(file_path)
+        self.local_file_size = os.path.getsize(file_path)
+        
+        size_mb = self.local_file_size / (1024 * 1024)
+        self.create_file_info.setText(f"{self.local_file_name}\n{size_mb:.1f} MB")
+        self.create_file_info.show()
+        self.check_inputs()
+
+    def select_file(self):
+        file_path, _ = QFileDialog.getOpenFileName(
+            self, "Select Video File", "", "Video Files (*.mp4 *.mkv *.avi *.mov *.webm);;All Files (*)"
+        )
+        if file_path:
+            self._set_local_file(file_path)
+
+    def dragEnterEvent(self, event):
+        if event.mimeData().hasUrls():
+            event.accept()
+        else:
+            event.ignore()
+
+    def dropEvent(self, event):
+        for url in event.mimeData().urls():
+            file_path = url.toLocalFile()
+            if os.path.isfile(file_path):
+                ext = os.path.splitext(file_path)[1].lower()
+                if ext in ['.mp4', '.mkv', '.avi', '.mov', '.webm']:
+                    self._set_local_file(file_path)
+                    break
+
+    def check_inputs(self):
+        has_name = len(self.username_input.text().strip()) > 0
+        has_file = self.local_file_path is not None
+        has_code = len(self.room_code_input.text().strip()) >= 4
+        
+        self.create_room_btn.setEnabled(has_name and has_file)
+        self.join_room_btn.setEnabled(has_name and has_code)
+
+    def create_room(self):
+        username = self.username_input.text().strip()
+        self.create_room_btn.setText("Connecting...")
+        self.create_room_btn.setEnabled(False)
+        self.join_room_btn.setEnabled(False)
+        self.create_requested.emit(username, self.local_file_path, self.local_file_name, self.local_file_size)
+
+    def join_room(self):
+        username = self.username_input.text().strip()
+        room_code = self.room_code_input.text().strip().upper()
+        self.join_room_btn.setText("Connecting...")
+        self.join_room_btn.setEnabled(False)
+        self.create_room_btn.setEnabled(False)
+        self.join_requested.emit(username, room_code)
+
+    def reset_ui(self):
+        self.create_room_btn.setText("Create Room")
+        self.join_room_btn.setText("Join Room")
+        self.check_inputs()
+
+    def clear_file(self):
+        self.local_file_path = None
+        self.local_file_name = None
+        self.local_file_size = 0
+        self.create_file_info.hide()
+        self.check_inputs()

desktop-client/main.py

@@ -2,22 +2,20 @@ import sys
 import os
 import ctypes
 from PyQt6.QtWidgets import (
-    QApplication, QMainWindow, QStackedWidget, QWidget, QVBoxLayout,
-    QHBoxLayout, QLabel, QLineEdit, QPushButton, QFileDialog, QMessageBox,
-    QFrame, QSlider, QTextEdit
+    QApplication, QMainWindow, QStackedWidget, QFileDialog, QMessageBox
 )
-from PyQt6.QtCore import Qt, pyqtSignal, QObject, QTimer
-from PyQt6.QtGui import QFont, QIcon, QColor
-from vlc_player import VLCSyncPlayer
+from PyQt6.QtCore import Qt, QTimer
+from PyQt6.QtGui import QIcon
+
 from sync_client import SyncClientThread
-import datetime
+from lobby_widget import LobbyWidget
+from room_widget import RoomWidget
 
 class VlcSyncApp(QMainWindow):
     def __init__(self):
         super().__init__()
         self.setWindowTitle("VideoSync — Watch Together")
         
-        # Set window icon
         icon_path = os.path.join(os.path.dirname(__file__), "icon.png")
         if os.path.exists(icon_path):
             self.setWindowIcon(QIcon(icon_path))
@@ -25,28 +23,33 @@ class VlcSyncApp(QMainWindow):
         self.setMinimumSize(900, 600)
         self.resize(1100, 700)
 
-        # Main stacked widget to switch between Lobby and Room
+        # Main stacked widget
         self.stacked_widget = QStackedWidget()
         self.setCentralWidget(self.stacked_widget)
 
         # Setup Views
-        self.lobby_view = self.create_lobby_view()
-        self.room_view = self.create_room_view()
+        self.lobby_widget = LobbyWidget()
+        self.room_widget = RoomWidget()
 
-        self.stacked_widget.addWidget(self.lobby_view)
-        self.stacked_widget.addWidget(self.room_view)
+        self.stacked_widget.addWidget(self.lobby_widget)
+        self.stacked_widget.addWidget(self.room_widget)
         
-        # State
+        # Connect View Signals
+        self.lobby_widget.create_requested.connect(self._on_lobby_create)
+        self.lobby_widget.join_requested.connect(self._on_lobby_join)
+        self.room_widget.leave_requested.connect(self._on_room_leave)
+        self.room_widget.sync_action_requested.connect(self._on_room_sync_action)
+        self.room_widget.chat_message_ready.connect(self._on_room_chat)
+        
+        # App State
         self.username = ""
         self.room_code = ""
         self.local_file_path = None
         self.local_file_name = None
         self.local_file_size = 0
-        
         self.pending_connect_action = None
-        self.ignore_vlc_events = False
-        self.last_reported_time_ms = 0
 
+        # Network Service
         self.sync_client = SyncClientThread("wss://video-sync.peterstockings.com/ws")
         self.sync_client.connected.connect(self.on_ws_connected)
         self.sync_client.disconnected.connect(self.on_ws_disconnected)
@@ -54,362 +57,18 @@ class VlcSyncApp(QMainWindow):
         self.sync_client.room_rejoined.connect(self.on_room_rejoined)
         self.sync_client.room_error.connect(self.on_room_error)
         self.sync_client.file_check_needed.connect(self.on_file_check_needed)
-        self.sync_client.users_updated.connect(self.on_users_updated)
-        self.sync_client.chat_message.connect(self.on_chat_message)
-        self.sync_client.system_message.connect(self.on_system_message)
-        self.sync_client.sync_event.connect(self.on_sync_event)
+        self.sync_client.users_updated.connect(self.room_widget.update_users)
+        self.sync_client.chat_message.connect(self.room_widget.add_chat_message)
+        self.sync_client.system_message.connect(self.room_widget.add_system_message)
+        self.sync_client.sync_event.connect(self.room_widget.handle_sync_event)
 
         self.apply_stylesheet()
 
-    def create_lobby_view(self):
-        widget = QWidget()
-        layout = QVBoxLayout(widget)
-        layout.setAlignment(Qt.AlignmentFlag.AlignCenter)
-        
-        # Container for centering
-        container = QFrame()
-        container.setObjectName("lobbyCard")
-        container.setFixedWidth(500)
-        container_layout = QVBoxLayout(container)
-        container_layout.setContentsMargins(30, 30, 30, 30)
-        container_layout.setSpacing(15)
-
-        # Brand
-        title = QLabel("VideoSync")
-        title.setObjectName("brandTitle")
-        title.setAlignment(Qt.AlignmentFlag.AlignCenter)
-        tagline = QLabel("Watch together, anywhere")
-        tagline.setObjectName("brandTagline")
-        tagline.setAlignment(Qt.AlignmentFlag.AlignCenter)
-        
-        container_layout.addWidget(title)
-        container_layout.addWidget(tagline)
-        container_layout.addSpacing(20)
-
-        # Username
-        self.username_input = QLineEdit()
-        self.username_input.setPlaceholderText("Enter a display name")
-        container_layout.addWidget(QLabel("YOUR NAME"))
-        container_layout.addWidget(self.username_input)
-        
-        container_layout.addSpacing(20)
-        
-        # Actions Layout (Create vs Join)
-        actions_layout = QHBoxLayout()
-        actions_layout.setSpacing(20)
-        
-        # Create Room Panel
-        create_panel = QVBoxLayout()
-        create_panel.addWidget(QLabel("Create a Room"))
-        self.create_file_btn = QPushButton("Choose Video File")
-        self.create_file_btn.setObjectName("secondaryBtn")
-        self.create_file_btn.clicked.connect(self.select_file)
-        
-        self.create_file_info = QLabel("")
-        self.create_file_info.setObjectName("fileInfo")
-        self.create_file_info.setWordWrap(True)
-        self.create_file_info.hide()
-        
-        self.create_room_btn = QPushButton("Create Room")
-        self.create_room_btn.setObjectName("primaryBtn")
-        self.create_room_btn.setEnabled(False)
-        self.create_room_btn.clicked.connect(self.create_room)
-        
-        create_panel.addWidget(self.create_file_btn)
-        create_panel.addWidget(self.create_file_info)
-        create_panel.addWidget(self.create_room_btn)
-        
-        # Join Room Panel
-        join_panel = QVBoxLayout()
-        join_panel.addWidget(QLabel("Join a Room"))
-        self.room_code_input = QLineEdit()
-        self.room_code_input.setPlaceholderText("e.g. ABC123")
-        self.join_room_btn = QPushButton("Join Room")
-        self.join_room_btn.setObjectName("secondaryBtn")
-        self.join_room_btn.setEnabled(False)
-        self.join_room_btn.clicked.connect(self.join_room)
-        
-        join_panel.addWidget(self.room_code_input)
-        join_panel.addWidget(self.join_room_btn)
-        
-        actions_layout.addLayout(create_panel)
-        
-        # Divider
-        divider = QLabel("OR")
-        divider.setAlignment(Qt.AlignmentFlag.AlignCenter)
-        divider.setObjectName("divider")
-        actions_layout.addWidget(divider)
-        
-        actions_layout.addLayout(join_panel)
-        
-        container_layout.addLayout(actions_layout)
-        layout.addWidget(container)
-
-        # Signals to enable/disable buttons
-        self.username_input.textChanged.connect(self.check_inputs)
-        self.room_code_input.textChanged.connect(self.check_inputs)
-
-        return widget
-
-    def create_room_view(self):
-        widget = QWidget()
-        layout = QHBoxLayout(widget)
-        layout.setContentsMargins(0, 0, 0, 0)
-        layout.setSpacing(0)
-        
-        # --- Left Side: Video ---
-        video_container = QWidget()
-        video_layout = QVBoxLayout(video_container)
-        video_layout.setContentsMargins(0, 0, 0, 0)
-        video_layout.setSpacing(0)
-        
-        # Topbar
-        self.topbar = QFrame()
-        self.topbar.setObjectName("topbar")
-        self.topbar.setFixedHeight(50)
-        topbar_layout = QHBoxLayout(self.topbar)
-        
-        self.room_code_display = QLabel("Room: XXXX")
-        self.copy_code_btn = QPushButton()
-        self.copy_code_btn.setObjectName("iconBtn")
-        self.copy_icon = QIcon(os.path.join(os.path.dirname(__file__), "copy.svg"))
-        self.check_icon = QIcon(os.path.join(os.path.dirname(__file__), "check.svg"))
-        self.copy_code_btn.setIcon(self.copy_icon)
-        self.copy_code_btn.setFixedSize(30, 30)
-        self.copy_code_btn.setToolTip("Copy Room Code")
-        self.copy_code_btn.clicked.connect(self.copy_room_code)
-        
-        self.room_file_badge = QLabel("📄 No file")
-        self.room_file_badge.setObjectName("fileBadge")
-        
-        self.leave_btn = QPushButton("Leave Room")
-        self.leave_btn.setObjectName("dangerBtn")
-        self.leave_btn.clicked.connect(self.leave_room)
-        
-        topbar_layout.addWidget(self.room_code_display)
-        topbar_layout.addWidget(self.copy_code_btn)
-        topbar_layout.addStretch()
-        topbar_layout.addWidget(self.room_file_badge)
-        topbar_layout.addWidget(self.leave_btn)
-        
-        # Video Frame Placeholder
-        self.video_frame = QFrame()
-        self.video_frame.setStyleSheet("background-color: black;")
-        # Fix for Windows QWidgetWindow Error: 
-        # Force the frame to have its own native HWND so VLC can attach to it without complaining it's not a top-level window.
-        self.video_frame.setAttribute(Qt.WidgetAttribute.WA_NativeWindow, True)
-        
-        # Controls Bar
-        controls = QFrame()
-        controls.setObjectName("controlsBar")
-        controls.setFixedHeight(60)
-        controls_layout = QHBoxLayout(controls)
-        
-        self.play_btn = QPushButton("▶")
-        self.play_btn.setFixedSize(40, 40)
-        self.play_btn.setObjectName("playBtn")
-        
-        # Time and SeekBar
-        self.seekbar = QSlider(Qt.Orientation.Horizontal)
-        self.seekbar.setRange(0, 1000)
-        self.seekbar.setObjectName("seekBar")
-        self.seekbar.sliderMoved.connect(self.on_seekbar_dragged)
-        self.seekbar.sliderReleased.connect(self.on_seekbar_released)
-        
-        self.time_lbl = QLabel("00:00:00 / 00:00:00")
-        
-        # Volume
-        self.vol_icon = QLabel("🔊")
-        self.vol_icon.setObjectName("volIcon")
-        self.volume_slider = QSlider(Qt.Orientation.Horizontal)
-        self.volume_slider.setRange(0, 100)
-        self.volume_slider.setValue(100)
-        self.volume_slider.setFixedWidth(100)
-        self.volume_slider.setObjectName("volumeSlider")
-        self.volume_slider.valueChanged.connect(self.on_volume_changed)
-        
-        # Fullscreen
-        self.fullscreen_btn = QPushButton("⛶")
-        self.fullscreen_btn.setFixedSize(40, 40)
-        self.fullscreen_btn.setObjectName("iconBtn")
-        self.fullscreen_btn.clicked.connect(self.toggle_fullscreen)
-        
-        controls_layout.addWidget(self.play_btn)
-        controls_layout.addWidget(self.seekbar, 1) # SeekBar gets the stretch
-        controls_layout.addWidget(self.time_lbl)
-        controls_layout.addSpacing(15)
-        controls_layout.addWidget(self.vol_icon)
-        controls_layout.addWidget(self.volume_slider)
-        controls_layout.addSpacing(10)
-        controls_layout.addWidget(self.fullscreen_btn)
-        
-        video_layout.addWidget(self.topbar)
-        video_layout.addWidget(self.video_frame)
-        video_layout.addWidget(controls)
-        
-        # --- Right Side: Chat ---
-        self.chat_container = QFrame()
-        self.chat_container.setObjectName("chatContainer")
-        self.chat_container.setFixedWidth(320)
-        chat_layout = QVBoxLayout(self.chat_container)
-        
-        chat_header = QLabel("Live Chat")
-        chat_header.setObjectName("chatHeader")
-        
-        self.users_lbl = QLabel("0 watching")
-        self.users_lbl.setObjectName("usersLbl")
-        
-        self.chat_messages = QTextEdit()
-        self.chat_messages.setObjectName("chatMessages")
-        self.chat_messages.setReadOnly(True)
-        self.chat_messages.setHtml("Welcome to the room! 👋")
-        
-        chat_input_layout = QHBoxLayout()
-        self.chat_input = QLineEdit()
-        self.chat_input.setPlaceholderText("Send a message...")
-        self.chat_send_btn = QPushButton("Send")
-        
-        chat_input_layout.addWidget(self.chat_input)
-        chat_input_layout.addWidget(self.chat_send_btn)
-        
-        # Chat actions
-        self.chat_send_btn.clicked.connect(self.send_chat)
-        self.chat_input.returnPressed.connect(self.send_chat)
-        
-        chat_layout.addWidget(chat_header)
-        chat_layout.addWidget(self.users_lbl)
-        chat_layout.addWidget(self.chat_messages, 1) # stretch
-        chat_layout.addLayout(chat_input_layout)
-        
-        layout.addWidget(video_container, 1) # stretch
-        layout.addWidget(self.chat_container)
-        
-        # Instantiate the VLC Player Wrapper
-        self.vlc_player = VLCSyncPlayer(self.video_frame)
-        self.vlc_player.signals.time_changed.connect(self.on_vlc_time)
-        self.vlc_player.signals.state_changed.connect(self.on_vlc_state)
-        self.vlc_player.set_volume(self.volume_slider.value())
-        
-        self.play_btn.clicked.connect(self.toggle_playback)
-
-        return widget
-
-    def toggle_fullscreen(self):
-        if self.isFullScreen():
-            self.showNormal()
-            self.fullscreen_btn.setText("⛶")
-            self.chat_container.show()
-            self.topbar.show()
-        else:
-            self.showFullScreen()
-            self.fullscreen_btn.setText("🗗")
-            self.chat_container.hide()
-            self.topbar.hide()
-
-    def toggle_playback(self):
-        position_s = self.vlc_player.current_time_ms / 1000.0
-        if self.vlc_player.is_playing:
-            self.vlc_player.pause()
-            self.play_btn.setText("▶")
-            self.sync_client.send_message({"type": "sync", "action": "pause", "position": position_s})
-        else:
-            self.vlc_player.play()
-            self.play_btn.setText("⏸")
-            self.sync_client.send_message({"type": "sync", "action": "play", "position": position_s})
-            
-    def on_vlc_time(self, time_ms: int):
-        length_ms = self.vlc_player.get_length()
-        if length_ms > 0:
-            def fmt(ms):
-                s = max(0, ms) // 1000
-                return f"{s//3600:02d}:{(s%3600)//60:02d}:{s%60:02d}"
-                
-            if not self.seekbar.isSliderDown():
-                self.time_lbl.setText(f"{fmt(time_ms)} / {fmt(length_ms)}")
-                progress = int((time_ms / length_ms) * 1000)
-                self.seekbar.blockSignals(True)
-                self.seekbar.setValue(progress)
-                self.seekbar.blockSignals(False)
-            
-        if self.last_reported_time_ms is not None:
-            diff = abs(time_ms - self.last_reported_time_ms)
-            if diff > 2500 and not self.ignore_vlc_events:
-                self.sync_client.send_message({"type": "sync", "action": "seek", "position": time_ms / 1000.0})
-        self.last_reported_time_ms = time_ms
-            
-    def on_vlc_state(self, playing: bool, time_ms: int):
-        if self.ignore_vlc_events:
-            return
-        action = "play" if playing else "pause"
-        self.sync_client.send_message({"type": "sync", "action": action, "position": time_ms / 1000.0})
-
-    def on_seekbar_dragged(self, value):
-        length_ms = self.vlc_player.get_length()
-        if length_ms > 0:
-            target_ms = int((value / 1000.0) * length_ms)
-            def fmt(ms):
-                s = max(0, ms) // 1000
-                return f"{s//3600:02d}:{(s%3600)//60:02d}:{s%60:02d}"
-            self.time_lbl.setText(f"{fmt(target_ms)} / {fmt(length_ms)}")
-
-    def on_seekbar_released(self):
-        length_ms = self.vlc_player.get_length()
-        if length_ms > 0:
-            target_ms = int((self.seekbar.value() / 1000.0) * length_ms)
-            self.vlc_player.seek(target_ms)
-            self.sync_client.send_message({"type": "sync", "action": "seek", "position": target_ms / 1000.0})
-
-    def on_volume_changed(self, value):
-        self.vlc_player.set_volume(value)
-
-    def select_file(self):
-        file_path, _ = QFileDialog.getOpenFileName(
-            self, "Select Video File", "", "Video Files (*.mp4 *.mkv *.avi *.mov *.webm);;All Files (*)"
-        )
-        if file_path:
-            self.local_file_path = file_path
-            self.local_file_name = os.path.basename(file_path)
-            self.local_file_size = os.path.getsize(file_path)
-            
-            size_mb = self.local_file_size / (1024 * 1024)
-            self.create_file_info.setText(f"{self.local_file_name}\n{size_mb:.1f} MB")
-            self.create_file_info.show()
-            self.check_inputs()
-
-    def copy_room_code(self):
-        if self.room_code:
-            QApplication.clipboard().setText(self.room_code)
-            self.copy_code_btn.setIcon(self.check_icon)
-            
-            # Show floating tooltip for feedback
-            toast = QLabel("Copied!", self)
-            toast.setStyleSheet("background-color: #4BB543; color: white; padding: 4px 8px; border-radius: 4px; font-weight: bold;")
-            toast.setWindowFlags(Qt.WindowType.ToolTip | Qt.WindowType.FramelessWindowHint)
-            
-            # Position the toast slightly below the button
-            pos = self.copy_code_btn.mapToGlobal(self.copy_code_btn.rect().bottomLeft())
-            toast.move(pos.x(), pos.y() + 5)
-            toast.show()
-            
-            def reset():
-                self.copy_code_btn.setIcon(self.copy_icon)
-                toast.deleteLater()
-                
-            QTimer.singleShot(1500, reset)
-
-    def check_inputs(self):
-        has_name = len(self.username_input.text().strip()) > 0
-        has_file = self.local_file_path is not None
-        has_code = len(self.room_code_input.text().strip()) >= 4
-        
-        self.create_room_btn.setEnabled(has_name and has_file)
-        self.join_room_btn.setEnabled(has_name and has_code)
-
-    def create_room(self):
-        self.username = self.username_input.text().strip()
-        self.create_room_btn.setText("Connecting...")
-        self.create_room_btn.setEnabled(False)
-        self.join_room_btn.setEnabled(False)
+    def _on_lobby_create(self, username, file_path, file_name, file_size):
+        self.username = username
+        self.local_file_path = file_path
+        self.local_file_name = file_name
+        self.local_file_size = file_size
         
         self.pending_connect_action = lambda: self.sync_client.send_message({
             "type": "create_room",
@@ -420,40 +79,38 @@ class VlcSyncApp(QMainWindow):
                 "duration": 0
             }
         })
-        
-        if self.sync_client.running and self.sync_client.ws:
-            self.on_ws_connected()
-        else:
-            self.sync_client.start()
+        self._ensure_connection()
 
-    def join_room(self):
-        self.username = self.username_input.text().strip()
-        self.room_code = self.room_code_input.text().strip().upper()
-        self.join_room_btn.setText("Connecting...")
-        self.join_room_btn.setEnabled(False)
-        self.create_room_btn.setEnabled(False)
-        
+    def _on_lobby_join(self, username, room_code):
+        self.username = username
+        self.room_code = room_code
         self.pending_connect_action = lambda: self.sync_client.send_message({
             "type": "join_room",
             "username": self.username,
             "code": self.room_code
         })
-        
+        self._ensure_connection()
+
+    def _ensure_connection(self):
         if self.sync_client.running and self.sync_client.ws:
             self.on_ws_connected()
         else:
             self.sync_client.start()
 
-    def leave_room(self):
-        self.vlc_player.stop()
+    def _on_room_leave(self):
+        self.room_widget.cleanup()
         self.sync_client.stop()
         self.stacked_widget.setCurrentIndex(0)
-        self.local_file_path = None
-        self.create_file_info.hide()
         self.room_code = ""
-        self.check_inputs()
-        self.create_room_btn.setText("Create Room")
-        self.join_room_btn.setText("Join Room")
+        self.local_file_path = None
+        self.lobby_widget.clear_file()
+        self.lobby_widget.reset_ui()
+
+    def _on_room_sync_action(self, action, position_s, req_id):
+        self.sync_client.send_message({"type": "sync", "action": action, "position": position_s, "req_id": req_id})
+        
+    def _on_room_chat(self, text):
+        self.sync_client.send_message({"type": "chat", "message": text})
 
     # --- WebSocket Callbacks ---
     def on_ws_connected(self):
@@ -461,7 +118,6 @@ class VlcSyncApp(QMainWindow):
             self.pending_connect_action()
             self.pending_connect_action = None
         elif self.stacked_widget.currentIndex() == 1 and self.room_code and self.username:
-            # We are already in a room and just reconnected
             self.sync_client.send_message({
                 "type": "rejoin_room",
                 "username": self.username,
@@ -470,25 +126,25 @@ class VlcSyncApp(QMainWindow):
 
     def on_ws_disconnected(self):
         if self.stacked_widget.currentIndex() == 1:
-            self.room_code_display.setText(f"Room: {self.room_code} (Reconnecting...)")
-            self.on_system_message("⚠️ Connection lost. Trying to reconnect...")
+            self.room_widget.set_room_code_display(f"{self.room_code} (Reconnecting...)")
+            self.room_widget.add_system_message("⚠️ Connection lost. Trying to reconnect...")
+        else:
+            self.lobby_widget.reset_ui()
+            self.pending_connect_action = None
 
     def on_room_error(self, msg: str):
         QMessageBox.critical(self, "Room Error", msg)
-        self.create_room_btn.setText("Create Room")
-        self.join_room_btn.setText("Join Room")
-        self.check_inputs()
+        self.lobby_widget.reset_ui()
         self.sync_client.stop()
 
     def on_file_check_needed(self, msg: dict):
-        # Defer execution to the PyQt Main Thread to avoid deadlocking the WebSocket thread
         QTimer.singleShot(0, lambda: self._handle_file_check(msg))
 
     def _handle_file_check(self, msg: dict):
         req_name = msg["fileInfo"].get("name", "Unknown")
         req_size = msg["fileInfo"].get("size", 0)
         
-        QMessageBox.information(self, "File Required", f"To join this room, you need to select:\\n\\nName: {req_name}\\nSize: {req_size / (1024*1024):.1f} MB")
+        QMessageBox.information(self, "File Required", f"To join this room, you need to select:\n\nName: {req_name}\nSize: {req_size / (1024*1024):.1f} MB")
         
         file_path, _ = QFileDialog.getOpenFileName(
             self, f"Select {req_name}", "", f"Required File ({req_name})"
@@ -499,7 +155,7 @@ class VlcSyncApp(QMainWindow):
             self.local_file_name = os.path.basename(file_path)
             self.local_file_size = os.path.getsize(file_path)
             
-            if self.local_file_name == req_name and self.local_file_size == req_size:
+            if self.local_file_name.lower() == req_name.lower() and int(self.local_file_size) == int(req_size):
                 self.sync_client.send_message({
                     "type": "confirm_join",
                     "fileInfo": {
@@ -509,14 +165,13 @@ class VlcSyncApp(QMainWindow):
                     }
                 })
             else:
-                QMessageBox.critical(self, "File Mismatch", "The selected file does not exactly match the room's required file.")
+                err_msg = f"Expected: {req_name} ({req_size} bytes)\nGot: {self.local_file_name} ({self.local_file_size} bytes)"
+                QMessageBox.critical(self, "File Mismatch", f"The selected file does not exactly match the room's required file.\n\n{err_msg}")
                 self.sync_client.stop()
-                self.join_room_btn.setText("Join Room")
-                self.check_inputs()
+                self.lobby_widget.reset_ui()
         else:
             self.sync_client.stop()
-            self.join_room_btn.setText("Join Room")
-            self.check_inputs()
+            self.lobby_widget.reset_ui()
 
     def on_room_joined(self, msg: dict):
         if "room" in msg:
@@ -525,189 +180,36 @@ class VlcSyncApp(QMainWindow):
             self.room_code = msg.get("code", "")
             
         self.stacked_widget.setCurrentIndex(1)
-        self.room_code_display.setText(f"Room: {self.room_code}")
-        self.room_file_badge.setText(f"📄 {self.local_file_name}")
-        self.create_room_btn.setText("Create Room")
-        self.join_room_btn.setText("Join Room")
-        self.chat_messages.setHtml("Welcome to the room! 👋")
+        self.lobby_widget.reset_ui()
         
         state = msg.get("state", {})
         start_time_s = state.get("position", 0.0) if state else 0.0
         
-        if self.local_file_path:
-            self.vlc_player.load_media(self.local_file_path, start_time_s)
-            self.vlc_player.set_volume(self.volume_slider.value())
+        self.room_widget.setup_room(self.room_code, self.username, self.local_file_name, self.local_file_path, start_time_s)
             
         users = msg.get("users", [])
         if users:
-            self.on_users_updated(users)
+            self.room_widget.update_users(users)
             
         if state:
-            self.on_sync_event(state)
+            self.room_widget.handle_sync_event(state)
             
         chat_history = msg.get("chatHistory", [])
         if chat_history:
-            self.chat_messages.setHtml("Welcome to the room! 👋")
             for chat in chat_history:
-                self.on_chat_message(chat.get("username", "Unknown"), chat.get("message", ""), chat.get("timestamp", 0))
+                self.room_widget.add_chat_message(chat.get("username", "Unknown"), chat.get("message", ""), chat.get("timestamp", 0))
 
     def on_room_rejoined(self, msg: dict):
-        self.room_code_display.setText(f"Room: {self.room_code}")
-        self.on_system_message("✅ Reconnected to the room.")
+        self.room_widget.set_room_code_display(self.room_code)
+        self.room_widget.add_system_message("✅ Reconnected to the room.")
         
         users = msg.get("users", [])
         if users:
-            self.on_users_updated(users)
+            self.room_widget.update_users(users)
             
         state = msg.get("state", {})
         if state:
-            # Don't reload media, just resync playback state
-            self.on_sync_event(state)
-
-    def on_chat_message(self, author: str, text: str, timestamp: int):
-        try:
-            dt = datetime.datetime.fromtimestamp(timestamp / 1000.0)
-        except (ValueError, OSError, TypeError):
-            dt = datetime.datetime.now()
-            
-        time_str = dt.strftime("%I:%M %p")
-        
-        new_msg = f"<b>{author}</b>: {text} <span style='color: gray; font-size: 10px;'>{time_str}</span>"
-        self.chat_messages.append(new_msg)
-        
-    def on_system_message(self, text: str):
-        new_msg = f"<i style='color: #888;'>{text}</i>"
-        self.chat_messages.append(new_msg)
-        
-    def on_users_updated(self, users: list):
-        self.users_lbl.setText(f"{len(users)} watching: {', '.join(users)}")
-        
-    def on_sync_event(self, msg: dict):
-        self.ignore_vlc_events = True
-        
-        action = msg.get("action")
-        # Handle full state sync vs event sync
-        if not action:
-            if msg.get("playing", False):
-                action = "play"
-            elif msg.get("playing") is False:
-                action = "pause"
-                
-        position_s = msg.get("position", 0)
-        position_ms = int(position_s * 1000)
-        
-        if action == "play":
-            self.vlc_player.seek(position_ms)
-            self.vlc_player.play()
-            self.play_btn.setText("⏸")
-        elif action == "pause":
-            self.vlc_player.seek(position_ms)
-            self.vlc_player.pause()
-            self.play_btn.setText("▶")
-        elif action == "seek":
-            self.vlc_player.seek(position_ms)
-            
-        def clear_ignore():
-            self.ignore_vlc_events = False
-        QTimer.singleShot(1500, clear_ignore)
-        
-        # System notification
-        username = msg.get("username")
-        if username and username != self.username:
-            if action == "play":
-                self.on_system_message(f"{username} pressed play")
-            elif action == "pause":
-                self.on_system_message(f"{username} paused")
-            elif action == "seek":
-                def fmt(s): return f"{int(s)//3600:02d}:{(int(s)%3600)//60:02d}:{int(s)%60:02d}"
-                self.on_system_message(f"{username} seeked to {fmt(position_s)}")
-
-    def _handle_seek_command(self, arg: str) -> bool:
-        current_ms = self.vlc_player.current_time_ms
-        length_ms = self.vlc_player.get_length()
-        if length_ms <= 0:
-            return False
-            
-        try:
-            target_ms = 0
-            if arg.startswith('+') or arg.startswith('-'):
-                # relative
-                modifier = 1 if arg.startswith('+') else -1
-                num_str = arg[1:]
-                
-                if num_str.endswith('s'):
-                    val = float(num_str[:-1]) * 1000
-                elif num_str.endswith('m'):
-                    val = float(num_str[:-1]) * 60 * 1000
-                elif num_str.endswith('h'):
-                    val = float(num_str[:-1]) * 3600 * 1000
-                else:
-                    val = float(num_str) * 1000  # Default to seconds
-                    
-                target_ms = current_ms + (val * modifier)
-            elif ":" in arg:
-                # absolute time like HH:MM:SS or MM:SS
-                parts = arg.split(":")
-                parts.reverse() # seconds, minutes, hours
-                if len(parts) > 0: target_ms += float(parts[0]) * 1000
-                if len(parts) > 1: target_ms += float(parts[1]) * 60 * 1000
-                if len(parts) > 2: target_ms += float(parts[2]) * 3600 * 1000
-            else:
-                # absolute seconds or something with a suffix but no + or -
-                if arg.endswith('s'):
-                    target_ms = float(arg[:-1]) * 1000
-                elif arg.endswith('m'):
-                    target_ms = float(arg[:-1]) * 60 * 1000
-                elif arg.endswith('h'):
-                    target_ms = float(arg[:-1]) * 3600 * 1000
-                else:
-                    target_ms = float(arg) * 1000
-                
-            target_ms = max(0, min(target_ms, length_ms))
-            self.vlc_player.seek(int(target_ms))
-            self.sync_client.send_message({"type": "sync", "action": "seek", "position": target_ms / 1000.0})
-            return True
-        except ValueError:
-            return False
-
-    def send_chat(self):
-        text = self.chat_input.text().strip()
-        if not text:
-            return
-
-        if text.startswith("/"):
-            parts = text.split()
-            cmd = parts[0].lower()
-            
-            if cmd == "/play":
-                self.chat_input.setText("")
-                if not self.vlc_player.is_playing:
-                    self.toggle_playback()
-                self.on_system_message(text)
-                return
-            elif cmd == "/pause":
-                self.chat_input.setText("")
-                if self.vlc_player.is_playing:
-                    self.toggle_playback()
-                self.on_system_message(text)
-                return
-            elif cmd == "/seek":
-                self.chat_input.setText("")
-                if len(parts) > 1:
-                    if self._handle_seek_command(parts[1]):
-                        self.on_system_message(text)
-                    else:
-                        self.on_system_message("Invalid time format. Use: 1:23, +30s, -1m")
-                else:
-                    self.on_system_message("Usage: /seek [time]")
-                return
-            elif cmd == "/help":
-                self.chat_input.setText("")
-                self.on_system_message("Available commands:<br><b>/play</b> - Resume playback<br><b>/pause</b> - Pause playback<br><b>/seek [time]</b> - Seek to specific time (e.g., 1:23) or offset (e.g., +30s, -1m)<br><b>/help</b> - Show this message")
-                return
-
-        self.sync_client.send_message({"type": "chat", "message": text})
-        self.chat_input.setText("")
+            self.room_widget.handle_sync_event(state)
 
     def apply_stylesheet(self):
         self.setStyleSheet("""
@@ -888,7 +390,7 @@ class VlcSyncApp(QMainWindow):
         """)
 
 if __name__ == "__main__":
-    # Tell Windows this is a distinct app so the taskbar icon updates correctly
+    import ctypes
     if os.name == 'nt':
         myappid = 'vlcsync.desktopclient.app.1' 
         try:
@@ -898,7 +400,6 @@ if __name__ == "__main__":
 
     app = QApplication(sys.argv)
     
-    # Set app-level icon
     icon_path = os.path.join(os.path.dirname(__file__), "icon.png")
     if os.path.exists(icon_path):
         app.setWindowIcon(QIcon(icon_path))
@@ -906,3 +407,4 @@ if __name__ == "__main__":
     window = VlcSyncApp()
     window.show()
     sys.exit(app.exec())
+

desktop-client/room_widget.py

@@ -0,0 +1,450 @@
+import os
+import datetime
+from PyQt6.QtWidgets import (
+    QWidget, QVBoxLayout, QHBoxLayout, QLabel, QLineEdit, 
+    QPushButton, QFrame, QSlider, QTextEdit, QApplication
+)
+from PyQt6.QtCore import Qt, pyqtSignal, QTimer
+from PyQt6.QtGui import QIcon
+import uuid
+
+from vlc_player import VLCSyncPlayer
+
+class ExpectedVlcEvent:
+    def __init__(self, action: str, req_id: str, target_val=None):
+        self.action = action
+        self.req_id = req_id
+        self.target_val = target_val
+        self.timestamp = datetime.datetime.now()
+
+class RoomWidget(QWidget):
+    leave_requested = pyqtSignal()
+    sync_action_requested = pyqtSignal(str, float, str)  # action, position_s, req_id
+    chat_message_ready = pyqtSignal(str)          # raw message text
+    
+    def __init__(self):
+        super().__init__()
+        
+        self.username = ""
+        self.room_code = ""
+        self.expected_vlc_events = []
+        self.last_reported_time_ms = 0
+        self.current_users = []
+        self._is_first_user_update = True
+        
+        self._setup_ui()
+        
+    def _setup_ui(self):
+        layout = QHBoxLayout(self)
+        layout.setContentsMargins(0, 0, 0, 0)
+        layout.setSpacing(0)
+        
+        # --- Left Side: Video ---
+        video_container = QWidget()
+        video_layout = QVBoxLayout(video_container)
+        video_layout.setContentsMargins(0, 0, 0, 0)
+        video_layout.setSpacing(0)
+        
+        # Topbar
+        self.topbar = QFrame()
+        self.topbar.setObjectName("topbar")
+        self.topbar.setFixedHeight(50)
+        topbar_layout = QHBoxLayout(self.topbar)
+        
+        self.room_code_display = QLabel("Room: XXXX")
+        self.copy_code_btn = QPushButton()
+        self.copy_code_btn.setObjectName("iconBtn")
+        self.copy_icon = QIcon(os.path.join(os.path.dirname(__file__), "copy.svg"))
+        self.check_icon = QIcon(os.path.join(os.path.dirname(__file__), "check.svg"))
+        self.copy_code_btn.setIcon(self.copy_icon)
+        self.copy_code_btn.setFixedSize(30, 30)
+        self.copy_code_btn.setToolTip("Copy Room Code")
+        self.copy_code_btn.clicked.connect(self.copy_room_code)
+        
+        self.room_file_badge = QLabel("📄 No file")
+        self.room_file_badge.setObjectName("fileBadge")
+        
+        self.leave_btn = QPushButton("Leave Room")
+        self.leave_btn.setObjectName("dangerBtn")
+        self.leave_btn.clicked.connect(self.leave_requested.emit)
+        
+        topbar_layout.addWidget(self.room_code_display)
+        topbar_layout.addWidget(self.copy_code_btn)
+        topbar_layout.addStretch()
+        topbar_layout.addWidget(self.room_file_badge)
+        topbar_layout.addWidget(self.leave_btn)
+        
+        # Video Frame Placeholder
+        self.video_frame = QFrame()
+        self.video_frame.setStyleSheet("background-color: black;")
+        self.video_frame.setAttribute(Qt.WidgetAttribute.WA_NativeWindow, True)
+        
+        # Controls Bar
+        controls = QFrame()
+        controls.setObjectName("controlsBar")
+        controls.setFixedHeight(60)
+        controls_layout = QHBoxLayout(controls)
+        
+        self.play_btn = QPushButton("▶")
+        self.play_btn.setFixedSize(40, 40)
+        self.play_btn.setObjectName("playBtn")
+        
+        # Time and SeekBar
+        self.seekbar = QSlider(Qt.Orientation.Horizontal)
+        self.seekbar.setRange(0, 1000)
+        self.seekbar.setObjectName("seekBar")
+        self.seekbar.sliderMoved.connect(self.on_seekbar_dragged)
+        self.seekbar.sliderReleased.connect(self.on_seekbar_released)
+        
+        self.time_lbl = QLabel("00:00:00 / 00:00:00")
+        
+        # Volume
+        self.vol_icon = QLabel("🔊")
+        self.vol_icon.setObjectName("volIcon")
+        self.volume_slider = QSlider(Qt.Orientation.Horizontal)
+        self.volume_slider.setRange(0, 100)
+        self.volume_slider.setValue(100)
+        self.volume_slider.setFixedWidth(100)
+        self.volume_slider.setObjectName("volumeSlider")
+        self.volume_slider.valueChanged.connect(self.on_volume_changed)
+        
+        # Fullscreen
+        self.fullscreen_btn = QPushButton("⛶")
+        self.fullscreen_btn.setFixedSize(40, 40)
+        self.fullscreen_btn.setObjectName("iconBtn")
+        self.fullscreen_btn.clicked.connect(self.toggle_fullscreen)
+        
+        controls_layout.addWidget(self.play_btn)
+        controls_layout.addWidget(self.seekbar, 1)
+        controls_layout.addWidget(self.time_lbl)
+        controls_layout.addSpacing(15)
+        controls_layout.addWidget(self.vol_icon)
+        controls_layout.addWidget(self.volume_slider)
+        controls_layout.addSpacing(10)
+        controls_layout.addWidget(self.fullscreen_btn)
+        
+        video_layout.addWidget(self.topbar)
+        video_layout.addWidget(self.video_frame)
+        video_layout.addWidget(controls)
+        
+        # --- Right Side: Chat ---
+        self.chat_container = QFrame()
+        self.chat_container.setObjectName("chatContainer")
+        self.chat_container.setFixedWidth(320)
+        chat_layout = QVBoxLayout(self.chat_container)
+        
+        chat_header = QLabel("Live Chat")
+        chat_header.setObjectName("chatHeader")
+        
+        self.users_lbl = QLabel("0 watching")
+        self.users_lbl.setObjectName("usersLbl")
+        
+        self.chat_messages = QTextEdit()
+        self.chat_messages.setObjectName("chatMessages")
+        self.chat_messages.setReadOnly(True)
+        self.chat_messages.setHtml("Welcome to the room! 👋")
+        
+        chat_input_layout = QHBoxLayout()
+        self.chat_input = QLineEdit()
+        self.chat_input.setPlaceholderText("Send a message...")
+        self.chat_send_btn = QPushButton("Send")
+        
+        chat_input_layout.addWidget(self.chat_input)
+        chat_input_layout.addWidget(self.chat_send_btn)
+        
+        # Chat actions
+        self.chat_send_btn.clicked.connect(self.send_chat)
+        self.chat_input.returnPressed.connect(self.send_chat)
+        
+        chat_layout.addWidget(chat_header)
+        chat_layout.addWidget(self.users_lbl)
+        chat_layout.addWidget(self.chat_messages, 1)
+        chat_layout.addLayout(chat_input_layout)
+        
+        layout.addWidget(video_container, 1)
+        layout.addWidget(self.chat_container)
+        
+        # Instantiate the VLC Player Wrapper
+        self.vlc_player = VLCSyncPlayer(self.video_frame)
+        self.vlc_player.signals.time_changed.connect(self.on_vlc_time)
+        self.vlc_player.signals.state_changed.connect(self.on_vlc_state)
+        self.vlc_player.set_volume(self.volume_slider.value())
+        
+        self.play_btn.clicked.connect(self.toggle_playback)
+
+    def setup_room(self, room_code: str, username: str, file_name: str, file_path: str, start_time_s: float = 0.0):
+        self.room_code = room_code
+        self.username = username
+        self.set_room_code_display(room_code)
+        self.room_file_badge.setText(f"📄 {file_name}")
+        self.chat_messages.setHtml("Welcome to the room! 👋")
+        self.current_users = []
+        self._is_first_user_update = True
+        
+        if file_path:
+            self.vlc_player.load_media(file_path, start_time_s)
+            self.vlc_player.set_volume(self.volume_slider.value())
+            
+    def cleanup(self):
+        self.vlc_player.stop()
+        self.current_users = []
+        self._is_first_user_update = True
+
+    def set_room_code_display(self, text: str):
+        self.room_code_display.setText(f"Room: {text}")
+
+    def toggle_fullscreen(self):
+        top_window = self.window()
+        if top_window.isFullScreen():
+            top_window.showNormal()
+            self.fullscreen_btn.setText("⛶")
+            self.chat_container.show()
+            self.topbar.show()
+        else:
+            top_window.showFullScreen()
+            self.fullscreen_btn.setText("🗗")
+            self.chat_container.hide()
+            self.topbar.hide()
+
+    def copy_room_code(self):
+        if self.room_code:
+            QApplication.clipboard().setText(self.room_code)
+            self.copy_code_btn.setIcon(self.check_icon)
+            
+            toast = QLabel("Copied!", self)
+            toast.setStyleSheet("background-color: #4BB543; color: white; padding: 4px 8px; border-radius: 4px; font-weight: bold;")
+            toast.setWindowFlags(Qt.WindowType.ToolTip | Qt.WindowType.FramelessWindowHint)
+            
+            pos = self.copy_code_btn.mapToGlobal(self.copy_code_btn.rect().bottomLeft())
+            toast.move(pos.x(), pos.y() + 5)
+            toast.show()
+            
+            def reset():
+                self.copy_code_btn.setIcon(self.copy_icon)
+                toast.deleteLater()
+            QTimer.singleShot(1500, reset)
+
+    def _tell_vlc_and_expect(self, action: str, position_s: float):
+        req_id = str(uuid.uuid4())[:8]
+        target_ms = int(position_s * 1000)
+        
+        # Clean up old expectations (e.g. VLC dropped the event or we missed it)
+        now = datetime.datetime.now()
+        self.expected_vlc_events = [e for e in self.expected_vlc_events 
+                                  if (now - e.timestamp).total_seconds() < 3.0]
+        
+        self.expected_vlc_events.append(ExpectedVlcEvent(action, req_id, target_ms))
+        
+        if action == "play":
+            self.vlc_player.seek(target_ms)
+            self.vlc_player.play()
+            self.play_btn.setText("⏸")
+        elif action == "pause":
+            self.vlc_player.seek(target_ms)
+            self.vlc_player.pause()
+            self.play_btn.setText("▶")
+        elif action == "seek":
+            self.vlc_player.seek(target_ms)
+            
+        return req_id
+            
+    def toggle_playback(self):
+        position_s = self.vlc_player.current_time_ms / 1000.0
+        if self.vlc_player.is_playing:
+            req = self._tell_vlc_and_expect("pause", position_s)
+            self.sync_action_requested.emit("pause", position_s, req)
+        else:
+            req = self._tell_vlc_and_expect("play", position_s)
+            self.sync_action_requested.emit("play", position_s, req)
+            
+    def on_vlc_time(self, time_ms: int):
+        length_ms = self.vlc_player.get_length()
+        if length_ms > 0:
+            def fmt(ms):
+                s = max(0, ms) // 1000
+                return f"{s//3600:02d}:{(s%3600)//60:02d}:{s%60:02d}"
+                
+            if not self.seekbar.isSliderDown():
+                self.time_lbl.setText(f"{fmt(time_ms)} / {fmt(length_ms)}")
+                progress = int((time_ms / length_ms) * 1000)
+                self.seekbar.blockSignals(True)
+                self.seekbar.setValue(progress)
+                self.seekbar.blockSignals(False)
+            
+            if self.last_reported_time_ms is not None:
+                diff = abs(time_ms - self.last_reported_time_ms)
+                
+                if diff > 1500:
+                    # Look for a pending seek expectation
+                    matched = False
+                    for i, expected in enumerate(self.expected_vlc_events):
+                        if expected.action == "seek" and (expected.target_val is None or abs(expected.target_val - time_ms) < 2000):
+                            matched = True
+                            self.expected_vlc_events.pop(i)
+                            break
+                    
+                    if not matched:
+                        # Genuine user scrub!
+                        req = str(uuid.uuid4())[:8]
+                        self.sync_action_requested.emit("seek", time_ms / 1000.0, req)
+                        
+            self.last_reported_time_ms = time_ms
+            
+    def on_vlc_state(self, playing: bool, time_ms: int):
+        action = "play" if playing else "pause"
+        
+        # Look for a pending state change expectation
+        matched = False
+        for i, expected in enumerate(self.expected_vlc_events):
+            if expected.action == action:
+                matched = True
+                self.expected_vlc_events.pop(i)
+                break
+                
+        if not matched:
+            req = str(uuid.uuid4())[:8]
+            self.sync_action_requested.emit(action, time_ms / 1000.0, req)
+
+    def on_seekbar_dragged(self, value):
+        length_ms = self.vlc_player.get_length()
+        if length_ms > 0:
+            target_ms = int((value / 1000.0) * length_ms)
+            def fmt(ms):
+                s = max(0, ms) // 1000
+                return f"{s//3600:02d}:{(s%3600)//60:02d}:{s%60:02d}"
+            self.time_lbl.setText(f"{fmt(target_ms)} / {fmt(length_ms)}")
+
+    def on_seekbar_released(self):
+        length_ms = self.vlc_player.get_length()
+        if length_ms > 0:
+            target_ms = int((self.seekbar.value() / 1000.0) * length_ms)
+            req = self._tell_vlc_and_expect("seek", target_ms / 1000.0)
+            self.sync_action_requested.emit("seek", target_ms / 1000.0, req)
+
+    def on_volume_changed(self, value):
+        self.vlc_player.set_volume(value)
+
+    # --- Incoming Sync Logic ---
+    def handle_sync_event(self, msg: dict):
+        action = msg.get("action")
+        if not action:
+            if msg.get("playing", False): action = "play"
+            elif msg.get("playing") is False: action = "pause"
+                
+        position_s = msg.get("position", 0)
+        
+        if action in ["play", "pause", "seek"]:
+            self._tell_vlc_and_expect(action, position_s)
+        
+        username = msg.get("username")
+        if username and username != self.username:
+            if action == "play": self.add_system_message(f"{username} pressed play")
+            elif action == "pause": self.add_system_message(f"{username} paused")
+            elif action == "seek":
+                def fmt(s): return f"{int(s)//3600:02d}:{(int(s)%3600)//60:02d}:{int(s)%60:02d}"
+                self.add_system_message(f"{username} seeked to {fmt(position_s)}")
+
+    def update_users(self, users: list):
+        if self._is_first_user_update:
+            self._is_first_user_update = False
+        else:
+            joined = set(users) - set(self.current_users)
+            left = set(self.current_users) - set(users)
+            
+            for user in joined:
+                if user != self.username:
+                    self.add_system_message(f"👋 {user} joined the room")
+                    
+            for user in left:
+                if user != self.username:
+                    self.add_system_message(f"🚪 {user} left the room")
+                    
+        self.current_users = users
+        self.users_lbl.setText(f"{len(users)} watching: {', '.join(users)}")
+
+    def add_chat_message(self, author: str, text: str, timestamp: int):
+        try:
+            dt = datetime.datetime.fromtimestamp(timestamp / 1000.0)
+        except (ValueError, OSError, TypeError):
+            dt = datetime.datetime.now()
+        time_str = dt.strftime("%I:%M %p")
+        new_msg = f"<b>{author}</b>: {text} <span style='color: gray; font-size: 10px;'>{time_str}</span>"
+        self.chat_messages.append(new_msg)
+
+    def add_system_message(self, text: str):
+        new_msg = f"<i style='color: #888;'>{text}</i>"
+        self.chat_messages.append(new_msg)
+
+    def send_chat(self):
+        text = self.chat_input.text().strip()
+        if not text:
+            return
+
+        if text.startswith("/"):
+            parts = text.split()
+            cmd = parts[0].lower()
+            
+            if cmd == "/play":
+                self.chat_input.setText("")
+                if not self.vlc_player.is_playing:
+                    self.toggle_playback()
+                self.add_system_message(text)
+                return
+            elif cmd == "/pause":
+                self.chat_input.setText("")
+                if self.vlc_player.is_playing:
+                    self.toggle_playback()
+                self.add_system_message(text)
+                return
+            elif cmd == "/seek":
+                self.chat_input.setText("")
+                if len(parts) > 1:
+                    if self._handle_seek_command(parts[1]):
+                        self.add_system_message(text)
+                    else:
+                        self.add_system_message("Invalid time format. Use: 1:23, +30s, -1m")
+                else:
+                    self.add_system_message("Usage: /seek [time]")
+                return
+            elif cmd == "/help":
+                self.chat_input.setText("")
+                self.add_system_message("Available commands:<br><b>/play</b> - Resume playback<br><b>/pause</b> - Pause playback<br><b>/seek [time]</b> - Seek to specific time (e.g., 1:23) or offset (e.g., +30s, -1m)<br><b>/help</b> - Show this message")
+                return
+
+        self.chat_message_ready.emit(text)
+        self.chat_input.setText("")
+
+    def _handle_seek_command(self, arg: str) -> bool:
+        current_ms = self.vlc_player.current_time_ms
+        length_ms = self.vlc_player.get_length()
+        if length_ms <= 0:
+            return False
+            
+        try:
+            target_ms = 0
+            if arg.startswith('+') or arg.startswith('-'):
+                modifier = 1 if arg.startswith('+') else -1
+                num_str = arg[1:]
+                if num_str.endswith('s'): val = float(num_str[:-1]) * 1000
+                elif num_str.endswith('m'): val = float(num_str[:-1]) * 60 * 1000
+                elif num_str.endswith('h'): val = float(num_str[:-1]) * 3600 * 1000
+                else: val = float(num_str) * 1000
+                target_ms = current_ms + (val * modifier)
+            elif ":" in arg:
+                parts = arg.split(":")
+                parts.reverse()
+                if len(parts) > 0: target_ms += float(parts[0]) * 1000
+                if len(parts) > 1: target_ms += float(parts[1]) * 60 * 1000
+                if len(parts) > 2: target_ms += float(parts[2]) * 3600 * 1000
+            else:
+                if arg.endswith('s'): target_ms = float(arg[:-1]) * 1000
+                elif arg.endswith('m'): target_ms = float(arg[:-1]) * 60 * 1000
+                elif arg.endswith('h'): target_ms = float(arg[:-1]) * 3600 * 1000
+                else: target_ms = float(arg) * 1000
+                
+            target_ms = max(0, min(target_ms, length_ms))
+            req = self._tell_vlc_and_expect("seek", target_ms / 1000.0)
+            self.sync_action_requested.emit("seek", target_ms / 1000.0, req)
+            return True
+        except ValueError:
+            return False

desktop-client/test_app.py

@@ -9,22 +9,22 @@ def test_app_ui_flow(qtbot):
     
     # 1. Test Lobby View
     assert app.stacked_widget.currentIndex() == 0
-    assert not app.create_room_btn.isEnabled()
+    assert not app.lobby_widget.create_room_btn.isEnabled()
     
     # Fill out the Lobby Form
-    app.username_input.setText("PyTestUser")
+    app.lobby_widget.username_input.setText("PyTestUser")
     
     # Mocking file selection instead of opening the native dialog
-    app.local_file_path = "test_pytest.mkv"
-    app.local_file_name = "test_pytest.mkv"
-    app.local_file_size = 1048576
-    app.check_inputs()
+    app.lobby_widget.local_file_path = "test_pytest.mkv"
+    app.lobby_widget.local_file_name = "test_pytest.mkv"
+    app.lobby_widget.local_file_size = 1048576
+    app.lobby_widget.check_inputs()
     
     # Button should now be active
-    assert app.create_room_btn.isEnabled()
+    assert app.lobby_widget.create_room_btn.isEnabled()
     
     # 2. Test Creating Room matches integration pipeline
-    qtbot.mouseClick(app.create_room_btn, Qt.MouseButton.LeftButton)
+    qtbot.mouseClick(app.lobby_widget.create_room_btn, Qt.MouseButton.LeftButton)
     
     # Wait for the WebSocket connected signal, the room_created server response, and UI transition
     def check_room_joined():
@@ -35,26 +35,26 @@ def test_app_ui_flow(qtbot):
     
     # 3. Test Chat flow End-to-End
     # Type a message
-    qtbot.keyClicks(app.chat_input, "Automated UI Test Message")
+    qtbot.keyClicks(app.room_widget.chat_input, "Automated UI Test Message")
     # Click Send
-    qtbot.mouseClick(app.chat_send_btn, Qt.MouseButton.LeftButton)
+    qtbot.mouseClick(app.room_widget.chat_send_btn, Qt.MouseButton.LeftButton)
     
     # Wait until the Bun server grabs the websocket payload, stores it, and broadcasts it back to the UI!
     def check_chat_received():
-        assert "Automated UI Test Message" in app.chat_messages.text()
+        assert "Automated UI Test Message" in app.room_widget.chat_messages.toPlainText()
         
     qtbot.waitUntil(check_chat_received, timeout=3000)
     
     # 4. Test Playback Sync (UI updates and internal flags)
-    assert app.play_btn.text() == "▶"
+    assert app.room_widget.play_btn.text() == "▶"
     
     # Click Play
-    qtbot.mouseClick(app.play_btn, Qt.MouseButton.LeftButton)
+    qtbot.mouseClick(app.room_widget.play_btn, Qt.MouseButton.LeftButton)
     
     def check_playback_started():
-        assert app.play_btn.text() == "⏸"
+        assert app.room_widget.play_btn.text() == "⏸"
         
     qtbot.waitUntil(check_playback_started, timeout=2000)
     
     # Clean up background threads
-    app.leave_room()
+    app._on_room_leave()

server.ts

@@ -294,6 +294,7 @@ const server = Bun.serve<WSData>({
               playing: room.playing,
               username: ws.data.username,
               timestamp: Date.now(),
+              req_id: msg.req_id,
             },
             ws as unknown as WebSocket
           );