import os
import traceback

from loguru import logger
from nicegui import ui
from pptx import Presentation

from config.config import load_config
from utils.file_utils import open_folder


def create_signature_page(folder: str = ""):
    ui.add_head_html('<link href="/assets/style.css" rel="stylesheet" />')

    # 添加样式
    ui.add_head_html(
        """
        <style>
            .file-list { max-height: 450px; overflow-y: auto; }
            .file-list::-webkit-scrollbar {
                width: 6px;
            }
            .file-list::-webkit-scrollbar-track {
                background: #f1f1f1;
                border-radius: 3px;
            }
            .file-list::-webkit-scrollbar-thumb {
                background: #c1c1c1;
                border-radius: 3px;
            }
            .file-list::-webkit-scrollbar-thumb:hover {
                background: #a1a1a1;
            }
            .file-item { transition: background-color 0.2s ease; }
            .file-item:hover { background-color: #f8f9fa; }
        </style>
    """
    )

    with ui.header().classes("app-header items-center justify-between shadow-md"):
        # 左侧：图标和标题
        with ui.row().classes("items-center gap-2"):
            ui.image("/assets/icon.ico").classes("w-8 h-8").props("fit=contain")
            ui.label("尚城幼儿园成长报告助手").classes("text-xl font-bold")
        # 右侧：署名 + 配置按钮
        with ui.row().classes("items-center gap-4"):
            ui.label("By 寒寒 | 这里的每一份评语都充满爱意").classes(
                "text-xs opacity-90"
            )
            ui.button(icon="home", on_click=lambda: ui.navigate.to("/")).props(
                "flat round color=white"
            )

    with ui.card().classes("w-full"):
        ui.label("💴 园长签名").classes("section-title")
        with ui.row().classes("w-full items-center justify-between"):
            with ui.row().classes("flex-1 items-center"):
                ui.label("📁 当前目录:").classes(
                    "text-sm text-white border bg-[#2e8b57] p-2 rounded"
                )
                ui.label(f"{folder}").classes("text-sm text-gray-600")
            with ui.row().classes("items-center"):
                ui.button(
                    "💴 一键签名",
                    on_click=lambda: sign_all_files(folder),
                ).props().classes()
                ui.button(
                    "📂 打开文件夹",
                    on_click=lambda: open_folder(folder),
                ).props("outline").classes()
                ui.button(
                    "🔄 刷新数据",
                    on_click=lambda: for_file_list(list_card, folder),
                ).props("outline").classes()

    list_card = ui.card().classes("w-full p-4 gap-4")
    for_file_list(list_card, folder)


# 遍历目录
def for_file_list(list_card, folder):
    # 清空旧内容
    list_card.clear()
    files = get_signature_files(folder)
    with list_card:
        ui.label(f"📄 找到 {len(files)} 个 PPT 文件").classes(
            "text-sm text-gray-600 mb-4"
        )

        # 存储选中的文件
        selected_files = []

        def toggle_file(file_name):
            if file_name in selected_files:
                selected_files.remove(file_name)
            else:
                selected_files.append(file_name)

        # 创建可滚动的文件列表
        with ui.grid(columns=2).classes("file-list"):
            for ppt_file in files:
                with ui.row().classes(
                    "w-full justify-between items-center file-item p-3 rounded mb-2"
                ):
                    with ui.row().classes("flex-1 items-center"):
                        ui.checkbox(
                            on_change=lambda e, f=ppt_file: toggle_file(f)
                        ).classes("mr-3")
                        ui.label(ppt_file).classes("flex-1 text-sm")
                    with ui.row().classes("items-center gap-2"):
                        # 打开文件按钮
                        ui.button(
                            "📂 打开",
                            on_click=lambda f=ppt_file: open_folder(
                                os.path.join(folder, f)
                            ),
                        ).props("outline").classes("text-xs")
                        # 签名按钮
                        ui.button(
                            "💴 签名",
                            on_click=lambda f=ppt_file: (
                                sign_file(folder, f),
                                ui.notify(f"签名完成: {f}", type="positive"),
                            ),
                        ).props("outline").classes("text-xs")


def get_signature_files(folder: str) -> list:
    """获取目录下所有 PPT 文件"""
    if not os.path.exists(folder):
        return []
    files = []
    for filename in os.listdir(folder):
        if not filename.startswith(".") and filename.endswith(".pptx"):
            files.append(filename)
    return sorted(files)


def sign_file(folder, file_name: str):
    """
    生成园长签名（不依赖占位符，直接在指定位置添加）
    :param folder: PPT 文件所在目录
    :param file_name: PPT 文件名称
    """
    try:
        # 1. 加载配置文件
        config = load_config()
    except Exception as e:
        logger.error(f"配置文件获取失败: {str(e)}")
        # 打印详细报错位置，方便调试
        logger.error(traceback.format_exc())
    try:
        # 2. 等待签名文件路径
        file_path = os.path.join(folder, file_name)
        logger.info(f"开始生成签名,PPT文件:{file_name}")
        # 加载签名图片路径
        img_path = config.get("signature_image")
        if not img_path or not os.path.exists(img_path):
            logger.error(f"签名图片不存在: {img_path}")
            logger.warning(f"⚠️ 警告: 缺少签名照片（'signature'）")
            return
        logger.info(f"签名图片存在: {img_path}")

        # 从配置文件获取签名位置信息，如果没有则使用默认值
        signature_left = config.get("signature_left", 2987040)  # 左位置
        signature_top = config.get("signature_top", 8273415)  # 上位置
        signature_width = config.get("signature_width", 1800000)  # 宽度
        signature_height = config.get("signature_height", 720000)  # 高度
        # 导入必要的模块
        from utils.image_utils import get_corrected_image_stream

        # 打开 PPT 对象
        prs = Presentation(file_path)

        # 获取第二张幻灯片 (索引为1)
        slide = prs.slides[1]

        # 获取修正后的图片流
        img_stream = get_corrected_image_stream(img_path)

        # 直接在指定位置添加签名图片
        slide.shapes.add_picture(
            img_stream,
            signature_left,
            signature_top,
            signature_width,
            signature_height,
        )
        # 保存修改后的 PPT
        prs.save(file_path)
        logger.info(f"签名完成,PPT文件:{file_name}")
    except Exception as e:
        logger.error(f"generate_signature 发生未知错误: {e}")
        # 打印详细报错位置，方便调试
        logger.error(traceback.format_exc())
        return str(e)


def sign_selected_files(folder: str, files: list):
    """为选中的文件进行签名"""
    total_files = len(files)
    logger.info(f"开始生成签名,共 {total_files} 个文件")
    for i, file_name in enumerate(files):
        sign_file(folder, file_name)
    logger.info(f"已为 {total_files} 个文件签名")
    ui.notify(f"签名完成: {total_files} 个文件", type="positive")


def sign_all_files(folder: str):
    """为目录下所有文件进行签名"""
    files = get_signature_files(folder)
    if files:
        sign_selected_files(folder, files)
        total_files = len(files)
        ui.notify(f"签名完成: {total_files} 个文件", type="positive")