"""
右侧统计面板
"""
import customtkinter as ctk
from typing import Dict, Callable, Optional


class StatisticsPanel(ctk.CTkFrame):
    """右侧统计面板"""
    
    def __init__(
        self,
        parent,
        on_refresh_callback: Callable,
        on_download_history_callback: Callable,
        on_export_callback: Callable,
        on_settings_callback: Callable,
        on_item_click_callback: Optional[Callable] = None,
        **kwargs
    ):
        super().__init__(parent, **kwargs)
        
        self.on_refresh_callback = on_refresh_callback
        self.on_download_history_callback = on_download_history_callback
        self.on_export_callback = on_export_callback
        self.on_settings_callback = on_settings_callback
        self.on_item_click_callback = on_item_click_callback
        
        self._create_widgets()
    
    def _create_widgets(self):
        """创建UI组件"""
        # 标题
        title_label = ctk.CTkLabel(
            self,
            text="统计信息",
            font=("Arial", 16, "bold")
        )
        title_label.pack(pady=(15, 10), padx=15)
        
        # ==================== 当前数据源信息 ====================
        datasource_frame = ctk.CTkFrame(self)
        datasource_frame.pack(fill="x", padx=15, pady=(0, 10))
        
        datasource_title = ctk.CTkLabel(
            datasource_frame,
            text="当前数据源",
            font=("Arial", 12, "bold")
        )
        datasource_title.pack(pady=(10, 5), padx=10)
        
        self.datasource_label = ctk.CTkLabel(
            datasource_frame,
            text="菜品",
            font=("Arial", 14, "bold"),
            text_color="blue"
        )
        self.datasource_label.pack(pady=(0, 10), padx=10)
        
        # ==================== 数据统计 ====================
        stats_frame = ctk.CTkFrame(self)
        stats_frame.pack(fill="x", padx=15, pady=(0, 10))
        
        stats_title = ctk.CTkLabel(
            stats_frame,
            text="数据统计",
            font=("Arial", 12, "bold")
        )
        stats_title.pack(pady=(10, 5), padx=10)
        
        # 查询结果
        self.query_result_label = ctk.CTkLabel(
            stats_frame,
            text="查询结果: 0 张",
            font=("Arial", 11),
            anchor="w"
        )
        self.query_result_label.pack(fill="x", pady=2, padx=15)
        
        # 已选择
        self.selected_label = ctk.CTkLabel(
            stats_frame,
            text="已选择: 0 张",
            font=("Arial", 11),
            anchor="w"
        )
        self.selected_label.pack(fill="x", pady=2, padx=15)
        
        # 分隔线
        separator1 = ctk.CTkFrame(stats_frame, height=2)
        separator1.pack(fill="x", pady=10, padx=15)
        
        # ==================== 时间分布 ====================
        time_frame = ctk.CTkFrame(self)
        time_frame.pack(fill="x", padx=15, pady=(0, 10))
        
        time_title = ctk.CTkLabel(
            time_frame,
            text="时间分布",
            font=("Arial", 12, "bold")
        )
        time_title.pack(pady=(10, 5), padx=10)
        
        # 今日
        self.today_label = ctk.CTkLabel(
            time_frame,
            text="今日: 0 张",
            font=("Arial", 11),
            anchor="w"
        )
        self.today_label.pack(fill="x", pady=2, padx=15)
        
        # 本周
        self.week_label = ctk.CTkLabel(
            time_frame,
            text="本周: 0 张",
            font=("Arial", 11),
            anchor="w"
        )
        self.week_label.pack(fill="x", pady=2, padx=15)
        
        # 本月
        self.month_label = ctk.CTkLabel(
            time_frame,
            text="本月: 0 张",
            font=("Arial", 11),
            anchor="w"
        )
        self.month_label.pack(fill="x", pady=2, padx=15)
        
        # 分隔线
        separator2 = ctk.CTkFrame(time_frame, height=2)
        separator2.pack(fill="x", pady=10, padx=15)
        
        # ==================== 物品排行（全部） ====================
        top_frame = ctk.CTkFrame(self)
        top_frame.pack(fill="both", expand=True, padx=15, pady=(0, 10))
        
        top_title = ctk.CTkLabel(
            top_frame,
            text="物品排行（全部）",
            font=("Arial", 12, "bold")
        )
        top_title.pack(pady=(10, 5), padx=10)
        
        # 可滚动的排行榜
        self.top_scroll = ctk.CTkScrollableFrame(top_frame, height=200)
        self.top_scroll.pack(fill="both", expand=True, padx=10, pady=(0, 10))
        
        # ==================== 快捷操作 ====================
        actions_frame = ctk.CTkFrame(self)
        actions_frame.pack(fill="x", padx=15, pady=(0, 15))
        
        actions_title = ctk.CTkLabel(
            actions_frame,
            text="快捷操作",
            font=("Arial", 12, "bold")
        )
        actions_title.pack(pady=(10, 5), padx=10)
        
        # 刷新按钮
        refresh_btn = ctk.CTkButton(
            actions_frame,
            text="🔄 刷新",
            command=self.on_refresh_callback,
            height=30
        )
        refresh_btn.pack(fill="x", padx=10, pady=2)
        
        # 下载历史按钮
        history_btn = ctk.CTkButton(
            actions_frame,
            text="📜 下载历史",
            command=self.on_download_history_callback,
            height=30,
            fg_color="purple",
            hover_color="darkviolet"
        )
        history_btn.pack(fill="x", padx=10, pady=2)
        
        # 导出按钮
        export_btn = ctk.CTkButton(
            actions_frame,
            text="📊 导出数据",
            command=self.on_export_callback,
            height=30,
            fg_color="orange",
            hover_color="darkorange"
        )
        export_btn.pack(fill="x", padx=10, pady=2)
        
        # 设置按钮
        settings_btn = ctk.CTkButton(
            actions_frame,
            text="⚙️ 设置",
            command=self.on_settings_callback,
            height=30,
            fg_color="gray",
            hover_color="darkgray"
        )
        settings_btn.pack(fill="x", padx=10, pady=(2, 10))
    
    def update_datasource(self, datasource: str):
        """更新当前数据源显示"""
        self.datasource_label.configure(text=datasource)
    
    def update_statistics(self, stats: Dict):
        """
        更新统计信息
        
        Args:
            stats: 统计数据字典，包含：
                - total_count: 总数量
                - today_count: 今日数量
                - week_count: 本周数量
                - month_count: 本月数量
                - top_items: 全部物品列表 [{'name': str, 'count': int}, ...]
        """
        # 查询结果
        total_count = stats.get('total_count', 0)
        self.query_result_label.configure(text=f"查询结果: {total_count} 张")
        
        # 时间分布
        today_count = stats.get('today_count', 0)
        self.today_label.configure(text=f"今日: {today_count} 张")
        
        week_count = stats.get('week_count', 0)
        self.week_label.configure(text=f"本周: {week_count} 张")
        
        month_count = stats.get('month_count', 0)
        self.month_label.configure(text=f"本月: {month_count} 张")
        
        # TOP 10排行
        self._update_top_items(stats.get('top_items', []))
    
    def _update_top_items(self, top_items: list):
        """更新物品排行（全部）"""
        # 清空现有内容
        for widget in self.top_scroll.winfo_children():
            widget.destroy()
        
        if not top_items:
            no_data_label = ctk.CTkLabel(
                self.top_scroll,
                text="暂无数据",
                font=("Arial", 11),
                text_color="gray"
            )
            no_data_label.pack(pady=10)
            return
        
        # 显示全部物品
        for i, item in enumerate(top_items, 1):
            item_frame = ctk.CTkFrame(self.top_scroll)
            item_frame.pack(fill="x", pady=2, padx=5)
            
            # 排名
            rank_label = ctk.CTkLabel(
                item_frame,
                text=f"{i}.",
                font=("Arial", 11, "bold"),
                width=30
            )
            rank_label.pack(side="left", padx=(5, 2))
            
            # 物品名称（可点击筛选）
            name_label = ctk.CTkLabel(
                item_frame,
                text=item['name'],
                font=("Arial", 10),
                anchor="w",
                cursor="hand2"  # 鼠标悬浮时显示手型
            )
            name_label.pack(side="left", fill="x", expand=True, padx=5)
            
            # 绑定点击与悬浮事件
            if self.on_item_click_callback:
                item_name = item['name']
                name_label.bind(
                    "<Button-1>",
                    lambda e, name=item_name: self.on_item_click_callback(name)
                )
                name_label.bind(
                    "<Enter>",
                    lambda e, lbl=name_label: lbl.configure(text_color="#4FC3F7")
                )
                name_label.bind(
                    "<Leave>",
                    lambda e, lbl=name_label: lbl.configure(text_color=ctk.ThemeManager.theme["CTkLabel"]["text_color"])
                )
            
            # 数量
            count_label = ctk.CTkLabel(
                item_frame,
                text=f"{item['count']}张",
                font=("Arial", 10),
                text_color="blue"
            )
            count_label.pack(side="right", padx=5)
    
    def update_selected_count(self, count: int):
        """更新已选择数量"""
        self.selected_label.configure(text=f"已选择: {count} 张")
    
    def clear_statistics(self):
        """清空统计信息"""
        self.query_result_label.configure(text="查询结果: 0 张")
        self.selected_label.configure(text="已选择: 0 张")
        self.today_label.configure(text="今日: 0 张")
        self.week_label.configure(text="本周: 0 张")
        self.month_label.configure(text="本月: 0 张")
        
        # 清空全部物品排行
        for widget in self.top_scroll.winfo_children():
            widget.destroy()