#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""
图标管理器
统一管理应用程序中使用的所有图标
"""

import os
from PyQt5.QtGui import QIcon, QPixmap
from PyQt5.QtCore import QSize

class IconManager:
    """图标管理器"""
    
    # 图标目录路径
    # ICONS_DIR = "Resources/Icons"
    ICONS_DIR = os.path.join(os.path.dirname(__file__), "..", "Resources", "Icons")
    
    # 图标文件映射
    ICON_FILES = {
        # 应用程序图标
        'app': 'app_icon.png',
        'logo': 'logo.png',
        
        # 操作图标
        'create': 'create.png',
        'import': 'import.png',
        'folder': 'folder.png',
        'delete': 'delete.png',
        'Refresh': 'Refresh.png',
        
        # 视图图标
        'grid_view': 'grid_view.png',
        'list_view': 'list_view.png',
        
        # 导航图标
        'overview': 'overview.png',
        'management': 'management.png',
        'resource_category': 'category.png',
        'resource_management': 'resource.png',
        'project_settings': 'settings.png',
        'system_settings': 'system.png',

        # 树箭头
        'down': 'solid_down_arrows.png',
        'right': 'solid_right_arrows.png',

        'search': 'search_icon.png',
        'infomation': 'infomation_icon.png',
        'infomation_hover': 'infomation_hover_icon.png',
        'infomation_check': 'infomation_check_icon.png',
        
        # 为获取项目图片
        'project_empty_icon': 'project_empty_icon.png',

        # 卡片右键菜单
        'refresh_projectcard': 'refresh_projectcard_icon.png',
        'open_projectcard': 'open_projectcard_icon.png',
        'remove_projectcard': 'remove_projectcard_icon.png',

        # 导入对话框
        'import_file': 'import_file_icon.png',
        'import_file_list': 'import_file_list_icon.png',

        # 创建项目浏览图标
        'file_icon': 'file_icon.png',
        'empty_folder_icon': 'empty_folder_icon.png',
        'close_bt_icon': 'close_bt_icon.png',

        # 弹窗图标
        'success_icon': 'success_icon.png',
        'warning_icon': 'warning_icon.png',
        'fail_icon': 'delete_fail_icon.png',
    }
    
    # 图标缓存
    _icon_cache = {}
    
    @classmethod
    def get_icon(cls, icon_name: str, size: QSize = None) -> QIcon:
        """
        获取图标
        
        Args:
            icon_name (str): 图标名称
            size (QSize, optional): 图标尺寸
            
        Returns:
            QIcon: 图标对象，如果文件不存在则返回空图标
        """
        # 检查缓存
        cache_key = f"{icon_name}_{size.width() if size else 'default'}_{size.height() if size else 'default'}"
        if cache_key in cls._icon_cache:
            return cls._icon_cache[cache_key]
        
        # 获取图标文件路径
        icon_path = cls.get_icon_path(icon_name)
        
        if not icon_path or not os.path.exists(icon_path):
            # 如果图标文件不存在，返回空图标
            icon = QIcon()
        else:
            # 创建图标
            if size:
                pixmap = QPixmap(icon_path).scaled(size, aspectRatioMode=1, transformMode=1)
                icon = QIcon(pixmap)
            else:
                icon = QIcon(icon_path)
        
        # 缓存图标
        cls._icon_cache[cache_key] = icon
        return icon
    
    @classmethod
    def get_icon_path(cls, icon_name: str) -> str:
        """
        获取图标文件路径
        
        Args:
            icon_name (str): 图标名称
            
        Returns:
            str: 图标文件的完整路径，如果不存在则返回空字符串
        """
        if icon_name not in cls.ICON_FILES:
            return ""
        
        icon_file = cls.ICON_FILES[icon_name]
        icon_path = os.path.join(cls.ICONS_DIR, icon_file)
        
        return icon_path
    
    @classmethod
    def get_pixmap(cls, icon_name: str, size: QSize = None) -> QPixmap:
        """
        获取图标的 QPixmap 对象
        
        Args:
            icon_name (str): 图标名称
            size (QSize, optional): 图标尺寸
            
        Returns:
            QPixmap: 图标的 QPixmap 对象
        """
        icon_path = cls.get_icon_path(icon_name)
        
        if not icon_path or not os.path.exists(icon_path):
            return QPixmap()
        
        pixmap = QPixmap(icon_path)
        if size:
            pixmap = pixmap.scaled(size, aspectRatioMode=1, transformMode=1)
        
        return pixmap
    
    @classmethod
    def icon_exists(cls, icon_name: str) -> bool:
        """
        检查图标是否存在
        
        Args:
            icon_name (str): 图标名称
            
        Returns:
            bool: 图标文件是否存在
        """
        icon_path = cls.get_icon_path(icon_name)
        print("icon_path", icon_path)
        print("os.path.exists(icon_path)", os.path.exists(icon_path))
        return icon_path and os.path.exists(icon_path)
    
    @classmethod
    def get_project_type_icon(cls, project_type: str) -> QIcon:
        """
        根据项目类型获取对应图标
        
        Args:
            project_type (str): 项目类型
            
        Returns:
            QIcon: 项目类型对应的图标
        """
        icon_name = f"project_{project_type}"
        if icon_name in cls.ICON_FILES:
            return cls.get_icon(icon_name)
        else:
            # 如果没有对应的项目类型图标，返回默认项目图标
            return cls.get_icon('project_empty')
    
    @classmethod
    def clear_cache(cls):
        """清空图标缓存"""
        cls._icon_cache.clear()
    
    @classmethod
    def ensure_icons_directory(cls):
        """确保图标目录存在"""
        if not os.path.exists(cls.ICONS_DIR):
            os.makedirs(cls.ICONS_DIR, exist_ok=True)
    
    @classmethod
    def get_available_icons(cls) -> list:
        """
        获取所有可用的图标列表
        
        Returns:
            list: 可用图标名称列表
        """
        available_icons = []
        for icon_name in cls.ICON_FILES:
            if cls.icon_exists(icon_name):
                available_icons.append(icon_name)
        return available_icons
    
    @classmethod
    def get_missing_icons(cls) -> list:
        """
        获取缺失的图标列表
        
        Returns:
            list: 缺失图标名称列表
        """
        missing_icons = []
        for icon_name in cls.ICON_FILES:
            if not cls.icon_exists(icon_name):
                missing_icons.append(icon_name)
        return missing_icons