from __future__ import annotations

import os
import time
import re
from typing import Optional, Callable
from playwright.sync_api import sync_playwright

class BaiduUploader:
    """
    百度网盘上传工具 - 纯净上传版 (移除分享逻辑)
    """
    def __init__(self, chrome_path: str, cookies_dir: str, log_callback: Optional[Callable[[str], None]] = None):
        self.chrome_path = chrome_path
        self.cookies_dir = cookies_dir
        self.log_callback = log_callback
        self.url = "https://pan.baidu.com/"
        
        if not os.path.exists(self.cookies_dir):
            os.makedirs(self.cookies_dir, exist_ok=True)

    def _log(self, message: str):
        print(message)
        if self.log_callback:
            self.log_callback(message)

    def upload_file(self, file_path: str, target_folder_name: str, root_path: str = "精品项目整理") -> bool:
        """
        上传文件到百度网盘
        """
        if not os.path.exists(file_path):
            self._log(f"错误: 本地文件不存在 {file_path}")
            return False

        filename = os.path.basename(file_path)
        
        # 提取项目编号
        project_id = ""
        match = re.search(r'(【[A-Za-z0-9]+】)', target_folder_name)
        if match:
            project_id = match.group(1)

        try:
            with sync_playwright() as p:
                self._log(f"正在启动浏览器...")
                
                launch_args = {
                    "user_data_dir": self.cookies_dir,
                    "headless": False,
                    "executable_path": self.chrome_path if self.chrome_path and os.path.exists(self.chrome_path) else None,
                    "viewport": {"width": 1280, "height": 800}
                }
                if not launch_args["executable_path"]:
                    launch_args.pop("executable_path")

                context = p.chromium.launch_persistent_context(**launch_args)
                context.add_init_script("Object.defineProperty(navigator, 'webdriver', {get: () => undefined})")
                
                page = context.new_page()
                page.set_default_timeout(60000)
                
                # 1. 登录
                self._log("检测登录状态...")
                page.goto(self.url, wait_until="domcontentloaded")
                
                if not self._wait_for_login(page):
                    self._log("请手动扫码登录...")
                    page.wait_for_selector("text=全部文件", timeout=180000)
                
                # 2. 导航
                self._log("登录成功，进入目标路径...")
                page.get_by_text("全部文件").first.click(force=True)
                time.sleep(4) 
                
                if not self._scan_and_enter(page, root_path):
                    self._create_folder(page, root_path)
                    time.sleep(2); self._scan_and_enter(page, root_path)
                
                search_key = project_id if project_id else target_folder_name
                if not self._scan_and_enter(page, search_key, is_fuzzy=True):
                    self._create_folder(page, target_folder_name)
                    time.sleep(2); self._scan_and_enter(page, search_key, is_fuzzy=True)
                
                # 3. 查重
                if self._check_file_exists_robust(page, filename):
                    self._log(f"云端已存在文件 '{filename}'，跳过上传。")
                    time.sleep(2)
                    context.close()
                    return True
                
                # 4. 执行上传
                self._log(f"开始传输: {filename}")
                page.set_input_files("input[type=file]", file_path)
                
                # 5. 监测列表确认成功
                self._log("上传已启动，监测云端状态中...")
                success = self._wait_for_file_in_list(page, filename)
                
                if success:
                    self._log("\n" + "="*30)
                    self._log("百度网盘上传圆满成功！")
                    self._log("="*30 + "\n")
                    time.sleep(3)
                else:
                    self._log("警告：监测超时，未能在列表中看到文件，请手动核实。")

                context.close()
                return success

        except Exception as e:
            self._log(f"程序异常: {str(e)}")
            return False

    def _wait_for_login(self, page) -> bool:
        for _ in range(10):
            if page.get_by_text("全部文件").count() > 0: return True
            time.sleep(2)
        return False

    def _scan_and_enter(self, page, target_name: str, is_fuzzy: bool = False) -> bool:
        try:
            page.evaluate("window.scrollTo(0, 300)")
            found = page.evaluate(f"""
                (args) => {{
                    const {{ name, fuzzy }} = args;
                    const els = [...document.querySelectorAll('span[title], a[title], .wp-s-file-list-drag-copy__item-title-text')];
                    const target = els.find(e => {{
                        const title = e.getAttribute('title') || e.innerText.trim();
                        return fuzzy ? title.includes(name) : title === name;
                    }});
                    if (target) {{
                        target.click();
                        const ev = new MouseEvent('dblclick', {{ 'view': window, 'bubbles': true, 'cancelable': true }});
                        target.dispatchEvent(ev);
                        return true;
                    }}
                    return false;
                }}
            """, {"name": target_name, "fuzzy": is_fuzzy})
            if found: time.sleep(3); return True
            return False
        except: return False

    def _create_folder(self, page, folder_name: str):
        try:
            page.keyboard.press("Escape")
            btn = page.get_by_text("新建文件夹").first
            if btn.count() > 0:
                btn.click(force=True)
                time.sleep(1.5)
                page.keyboard.type(folder_name, delay=50)
                page.keyboard.press("Enter")
                time.sleep(3)
        except: pass

    def _check_file_exists_robust(self, page, filename: str) -> bool:
        return page.evaluate(f"""
            (name) => {{
                const els = [...document.querySelectorAll('span[title], a[title], .wp-s-file-list-drag-copy__item-title-text')];
                return els.some(e => (e.getAttribute('title') || e.innerText.trim()) === name);
            }}
        """, filename)

    def _wait_for_file_in_list(self, page, filename: str) -> bool:
        start_time = time.time(); last_refresh = time.time()
        while time.time() - start_time < 1800:
            if self._check_file_exists_robust(page, filename):
                content = page.content()
                # 如果文件在列表里，且页面内容没在报错或重试
                if not any(x in content for x in ["正在上传", "传输队列", "0B/s"]):
                    return True
            if time.time() - last_refresh > 25:
                try: page.locator(".wp-s-file-list-drag-copy__header-breadcrumb-item").last.click(); time.sleep(3)
                except: pass
                last_refresh = time.time()
            time.sleep(5)
        return False