Update markdown and initial code

utils/auth.py

@@ -0,0 +1,57 @@
+import asyncio
+import json
+import os
+from playwright.async_api import async_playwright
+from utils.stealth import stealth_async
+
+class Authenticator:
+    def __init__(self, auth_file="auth_state.json"):
+        self.auth_file = auth_file
+
+    async def login(self, initial_url="https://weidian.com/"):
+        """
+        打开浏览器由用户手动扫码登录。
+        登录成功后保存 session state。
+        """
+        async with async_playwright() as p:
+            browser = await p.chromium.launch(headless=False, args=['--disable-gpu'])
+            # 模拟 iPhone 13 配置以确保显示手机版界面
+            device = p.devices['iPhone 13']
+            context = await browser.new_context(**device)
+            page = await context.new_page()
+            await stealth_async(page)
+            
+            await page.goto(initial_url)
+            print("请在浏览器中完成登录（扫码等操作）...")
+            
+            # 等待用户手动登录，直到 cookie 中出现登录凭证或 URL 变化
+            # 这里简单处理，等待用户按回车确认已登录
+            await asyncio.get_event_loop().run_in_executor(None, input, "登录完成后请在这里按回车控制台继续...")
+            
+            # 保存状态
+            storage = await context.storage_state(path=self.auth_file)
+            print(f"登录状态已保存至 {self.auth_file}")
+            
+            await browser.close()
+
+    def has_auth(self):
+        return os.path.exists(self.auth_file)
+
+    async def get_context(self, playwright_instance, headless=False):
+        """
+        创建一个带有已保存状态的 context，并模拟手机环境
+        """
+        browser = await playwright_instance.chromium.launch(headless=headless, args=['--disable-gpu'])
+        
+        # 模拟 iPhone 13 配置
+        device = playwright_instance.devices['iPhone 13']
+        
+        if self.has_auth():
+            context = await browser.new_context(
+                **device,
+                storage_state=self.auth_file
+            )
+        else:
+            context = await browser.new_context(**device)
+            
+        return browser, context