#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""
进度对话框组件

用于显示长时间运行操作的进度。
"""

import tkinter as tk
from tkinter import ttk
from typing import Optional, Callable
from gui.widgets.base_dialog import BaseDialog


class ProgressDialog(BaseDialog):
    """进度对话框"""

    def __init__(
        self,
        parent,
        title: str = "处理中...",
        message: str = "请稍候",
        can_cancel: bool = True,
        on_cancel: Optional[Callable] = None
    ):
        """
        初始化进度对话框

        Args:
            parent: 父窗口
            title: 对话框标题
            message: 显示消息
            can_cancel: 是否可以取消
            on_cancel: 取消回调函数
        """
        self.can_cancel = can_cancel
        self.on_cancel = on_cancel
        self.cancelled = False
        self.message_label = None
        self.progress = None
        self.cancel_button = None

        # 调用父类初始化（会自动设置为模态并居中）
        super().__init__(parent, title)

        # 设置固定大小
        self.resizable(False, False)

        # 创建内容
        self._create_widgets(message)

        # 设置固定大小并重新居中
        self._set_fixed_size(400, 150)

    def _set_fixed_size(self, width: int, height: int):
        """
        设置固定大小并重新居中

        Args:
            width: 宽度
            height: 高度
        """
        self.update_idletasks()
        self.geometry(f"{width}x{height}")
        self._center_window()

    def _create_widgets(self, message: str):
        """创建对话框组件"""
        # 消息标签
        self.message_label = ttk.Label(self, text=message, wraplength=380)
        self.message_label.pack(pady=(20, 10), padx=20)

        # 进度条
        self.progress = ttk.Progressbar(
            self,
            mode='indeterminate',
            length=360
        )
        self.progress.pack(pady=10, padx=20)
        self.progress.start(10)

        # 取消按钮
        if self.can_cancel:
            button_frame = ttk.Frame(self)
            button_frame.pack(pady=10)

            self.cancel_button = ttk.Button(
                button_frame,
                text="取消",
                command=self._on_cancel
            )
            self.cancel_button.pack()

    def _on_cancel(self):
        """处理取消操作"""
        self.cancelled = True
        if self.on_cancel:
            self.on_cancel()
        self.close()

    def update_message(self, message: str):
        """更新显示消息"""
        if self.message_label:
            self.message_label.config(text=message)
        self.update_idletasks()

    def set_progress(self, value: int, maximum: int = 100):
        """
        设置进度值

        Args:
            value: 当前进度值
            maximum: 最大值
        """
        if self.progress:
            self.progress.config(mode='determinate', maximum=maximum)
            self.progress['value'] = value
        self.update_idletasks()

    def close(self):
        """关闭对话框"""
        if self.progress:
            self.progress.stop()
        super().close()

    def is_cancelled(self) -> bool:
        """检查是否已取消"""
        return self.cancelled