"""
配置分类UI组件演示程序
"""
import sys
from pathlib import Path
from PySide6.QtWidgets import (
    QApplication, QMainWindow, QWidget, QVBoxLayout, 
    QTextEdit, QLabel, QPushButton, QMessageBox
)
from PySide6.QtCore import Qt
from config_category_widget import ConfigCategoryWidget


class DemoWindow(QMainWindow):
    """演示窗口"""
    
    def __init__(self):
        super().__init__()
        self.setWindowTitle("配置分类功能演示")
        self.resize(800, 600)
        
        # 中心部件
        central = QWidget()
        layout = QVBoxLayout()
        
        # 标题
        title = QLabel("配置分类功能演示")
        title.setStyleSheet("font-size: 18px; font-weight: bold; padding: 10px;")
        title.setAlignment(Qt.AlignCenter)
        layout.addWidget(title)
        
        # 配置分类选择器
        self.category_widget = ConfigCategoryWidget()
        self.category_widget.category_changed.connect(self._on_category_changed)
        layout.addWidget(self.category_widget)
        
        # 信息显示区域
        info_label = QLabel("当前分类信息:")
        info_label.setStyleSheet("font-weight: bold; margin-top: 20px;")
        layout.addWidget(info_label)
        
        self.info_text = QTextEdit()
        self.info_text.setReadOnly(True)
        self.info_text.setMaximumHeight(200)
        layout.addWidget(self.info_text)
        
        # 配置内容显示区域
        config_label = QLabel("配置文件内容:")
        config_label.setStyleSheet("font-weight: bold; margin-top: 20px;")
        layout.addWidget(config_label)
        
        self.config_text = QTextEdit()
        self.config_text.setReadOnly(True)
        layout.addWidget(self.config_text)
        
        # 操作按钮
        btn_layout = QVBoxLayout()
        
        refresh_btn = QPushButton("刷新分类列表")
        refresh_btn.clicked.connect(self._refresh_categories)
        btn_layout.addWidget(refresh_btn)
        
        load_btn = QPushButton("加载当前分类配置")
        load_btn.clicked.connect(self._load_current_config)
        btn_layout.addWidget(load_btn)
        
        layout.addLayout(btn_layout)
        
        central.setLayout(layout)
        self.setCentralWidget(central)
        
        # 初始加载
        self._load_current_config()
    
    def _on_category_changed(self, category_name: str, config_path: Path, template_path):
        """分类改变时的处理"""
        info = f"分类名称: {category_name}\n"
        info += f"配置路径: {config_path}\n"
        info += f"配置存在: {'是' if config_path.exists() else '否'}\n"
        
        if template_path:
            info += f"模板路径: {template_path}\n"
            info += f"模板存在: {'是' if template_path.exists() else '否'}\n"
        else:
            info += "模板路径: (未配置)\n"
        
        self.info_text.setText(info)
        
        # 自动加载配置内容
        self._load_config_content(config_path)
    
    def _load_config_content(self, config_path: Path):
        """加载配置文件内容"""
        try:
            if not config_path.exists():
                self.config_text.setText("配置文件不存在")
                return
            
            with config_path.open('r', encoding='utf-8') as f:
                content = f.read()
            
            self.config_text.setText(content)
        except Exception as e:
            self.config_text.setText(f"读取配置文件失败: {e}")
    
    def _refresh_categories(self):
        """刷新分类列表"""
        self.category_widget._load_categories()
        QMessageBox.information(self, "刷新", "分类列表已刷新")
    
    def _load_current_config(self):
        """加载当前分类配置"""
        category = self.category_widget.get_current_category()
        if category is None:
            self.info_text.setText("未选择分类")
            self.config_text.setText("")
            return
        
        self._on_category_changed(
            category.name,
            category.config_path,
            category.template_path
        )


def main():
    """主函数"""
    app = QApplication(sys.argv)
    
    # 设置样式
    app.setStyle("Fusion")
    
    window = DemoWindow()
    window.show()
    
    sys.exit(app.exec())


if __name__ == "__main__":
    main()