#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""
启动加载界面
显示程序启动和模板加载进度，防止用户误操作
"""
from PySide6.QtWidgets import QWidget, QVBoxLayout, QLabel, QProgressBar
from PySide6.QtCore import Qt, QTimer
from PySide6.QtGui import QPainter, QColor, QFont


class SplashScreen(QWidget):
    """半透明启动加载界面"""
    
    def __init__(self, parent=None):
        super().__init__(parent)
        self.setWindowFlags(
            Qt.WindowStaysOnTopHint | 
            Qt.FramelessWindowHint |
            Qt.Tool
        )
        self.setAttribute(Qt.WA_TranslucentBackground)
        
        # 设置窗口大小
        self.setFixedSize(500, 300)
        
        # 主布局
        layout = QVBoxLayout()
        layout.setContentsMargins(40, 40, 40, 40)
        layout.setSpacing(20)
        
        # 标题
        self.title_label = QLabel("Docx 报告生成器")
        self.title_label.setAlignment(Qt.AlignCenter)
        title_font = QFont()
        title_font.setPointSize(20)
        title_font.setBold(True)
        self.title_label.setFont(title_font)
        self.title_label.setStyleSheet("color: white;")
        
        # 状态标签
        self.status_label = QLabel("正在启动...")
        self.status_label.setAlignment(Qt.AlignCenter)
        status_font = QFont()
        status_font.setPointSize(12)
        self.status_label.setFont(status_font)
        self.status_label.setStyleSheet("color: #E0E0E0;")
        
        # 进度条
        self.progress_bar = QProgressBar()
        self.progress_bar.setMinimum(0)
        self.progress_bar.setMaximum(100)
        self.progress_bar.setValue(0)
        self.progress_bar.setTextVisible(True)
        self.progress_bar.setStyleSheet("""
            QProgressBar {
                border: 2px solid #555;
                border-radius: 8px;
                background-color: rgba(255, 255, 255, 0.1);
                text-align: center;
                color: white;
                font-size: 11px;
                height: 25px;
            }
            QProgressBar::chunk {
                background-color: qlineargradient(
                    x1:0, y1:0, x2:1, y2:0,
                    stop:0 #4A90E2,
                    stop:1 #357ABD
                );
                border-radius: 6px;
            }
        """)
        
        # 详细信息标签
        self.detail_label = QLabel("")
        self.detail_label.setAlignment(Qt.AlignCenter)
        detail_font = QFont()
        detail_font.setPointSize(9)
        self.detail_label.setFont(detail_font)
        self.detail_label.setStyleSheet("color: #B0B0B0;")
        self.detail_label.setWordWrap(True)
        
        # 添加到布局
        layout.addStretch(1)
        layout.addWidget(self.title_label)
        layout.addSpacing(10)
        layout.addWidget(self.status_label)
        layout.addWidget(self.progress_bar)
        layout.addWidget(self.detail_label)
        layout.addStretch(1)
        
        self.setLayout(layout)
        
        # 居中显示
        self._center_on_screen()
    
    def _center_on_screen(self):
        """将窗口居中显示"""
        from PySide6.QtWidgets import QApplication
        screen = QApplication.primaryScreen().geometry()
        x = (screen.width() - self.width()) // 2
        y = (screen.height() - self.height()) // 2
        self.move(x, y)
    
    def paintEvent(self, event):
        """绘制半透明背景"""
        painter = QPainter(self)
        try:
            painter.setRenderHint(QPainter.Antialiasing)
            
            # 绘制圆角矩形背景
            painter.setBrush(QColor(40, 40, 40, 230))  # 深灰色，90%不透明
            painter.setPen(QColor(80, 80, 80, 255))
            painter.drawRoundedRect(0, 0, self.width(), self.height(), 15, 15)
        finally:
            painter.end()  # 确保 painter 正确结束
    
    def update_status(self, message: str, progress: int = None, detail: str = ""):
        """
        更新加载状态
        
        Args:
            message: 主要状态信息
            progress: 进度值 (0-100)，None表示不更新
            detail: 详细信息
        """
        self.status_label.setText(message)
        if progress is not None:
            self.progress_bar.setValue(progress)
        if detail:
            self.detail_label.setText(detail)
        
        # 强制刷新界面
        QApplication.processEvents()
    
    def finish(self):
        """完成加载，关闭启动界面"""
        self.update_status("加载完成", 100)
        QTimer.singleShot(300, self.close)  # 延迟300ms后关闭


# 导入QApplication以便在update_status中使用
from PySide6.QtWidgets import QApplication