from PyQt6.QtCore import Qt, QUrl, pyqtSignal
from PyQt6.QtWidgets import QWidget, QVBoxLayout, QPushButton, QHBoxLayout
from PyQt6.QtMultimedia import QMediaPlayer
from PyQt6.QtMultimediaWidgets import QVideoWidget
import os

class WelcomeVideoPlayer(QWidget):
    """欢迎视频播放器，作为可嵌入组件"""
    videoFinished = pyqtSignal()
    
    def __init__(self, parent=None):
        super().__init__(parent)
        
        # 创建视频播放组件
        self.video_widget = QVideoWidget()
        self.media_player = QMediaPlayer()
        self.media_player.setVideoOutput(self.video_widget)
        
        # 设置跳过按钮
        self.skip_button = QPushButton("跳过")
        # 增强按钮可见性，使用更不透明的背景和更粗的边框
        self.skip_button.setStyleSheet("""
            QPushButton {
                background-color: rgba(0, 0, 0, 0.6);
                color: white;
                border: 2px solid white;
                border-radius: 8px;
                padding: 8px 20px;
                font-size: 16px;
                font-weight: bold;
            }
            QPushButton:hover {
                background-color: rgba(0, 0, 0, 0.8);
            }
        """)
        self.skip_button.clicked.connect(self.skip_video)
        # 确保按钮始终在最上层
        self.skip_button.raise_()
        
        # 创建布局
        self.main_layout = QVBoxLayout(self)
        self.main_layout.setContentsMargins(0, 0, 0, 0)
        self.main_layout.setSpacing(0)
        
        # 将视频组件添加到主布局
        self.main_layout.addWidget(self.video_widget, 1)
        
        # 创建底部布局用于放置跳过按钮
        self.bottom_layout = QHBoxLayout()
        self.bottom_layout.addStretch()
        self.bottom_layout.addWidget(self.skip_button)
        self.bottom_layout.setContentsMargins(0, 0, 20, 30)  # 增加底部边距
        self.bottom_layout.setAlignment(Qt.AlignmentFlag.AlignBottom | Qt.AlignmentFlag.AlignRight)
        
        # 将底部布局添加到主布局
        self.main_layout.addLayout(self.bottom_layout, 0)
        self.setLayout(self.main_layout)  # 明确设置布局
        
        # 连接信号
        self.media_player.positionChanged.connect(self.check_position)
        self.media_player.mediaStatusChanged.connect(self.media_status_changed)
        
        # 初始隐藏
        self.hide()
    
    def load_video(self):
        """加载欢迎视频"""
        video_path = os.path.join(os.path.dirname(os.path.abspath(__file__)), "_internal", "start.mp4")
        if os.path.exists(video_path):
            self.media_player.setSource(QUrl.fromLocalFile(video_path))
            self.media_player.play()
        else:
            print(f"视频文件不存在: {video_path}")
            self.videoFinished.emit()
    
    def load_video(self):
        """加载欢迎视频"""
        video_path = os.path.join(os.path.dirname(os.path.abspath(__file__)), "_internal", "start.mp4")
        if os.path.exists(video_path):
            self.media_player.setSource(QUrl.fromLocalFile(video_path))
            self.media_player.play()
        else:
            print(f"视频文件不存在: {video_path}")
            self.videoFinished.emit()
    
    def check_position(self, position):
        """检查视频播放进度"""
        if self.media_player.duration() > 0 and position >= self.media_player.duration() - 1000:  # 接近结束时
            self.videoFinished.emit()
    
    def media_status_changed(self, status):
        """媒体状态变化处理"""
        from PyQt6.QtMultimedia import QMediaPlayer
        if status == QMediaPlayer.MediaStatus.EndOfMedia:
            self.videoFinished.emit()
    
    def skip_video(self):
        """跳过视频"""
        self.media_player.stop()
        self.videoFinished.emit()
    
    def start_playback(self):
        """开始播放视频"""
        self.load_video()
        self.show()
        # 确保按钮在播放时也在顶层
        self.skip_button.raise_()
        
    def stop_playback(self):
        """停止播放视频"""
        self.media_player.stop()
        self.hide()
    
    def closeEvent(self, event):
        """关闭事件处理"""
        self.media_player.stop()
        event.accept()