添加渲染错误信息为图片

konabot/common/render_error_message.py

@@ -0,0 +1,34 @@
+from typing import Any
+from loguru import logger
+from nonebot_plugin_alconna import UniMessage
+import playwright.async_api
+from playwright.async_api import Page
+
+from konabot.common.web_render import WebRenderer, konaweb
+
+
+async def render_error_message(message: str) -> UniMessage[Any]:
+    """
+    渲染文本消息为错误信息图片。
+
+    如果无法访达 Web 端则返回纯文本给用户。
+    """
+
+    async def page_function(page: Page):
+        await page.wait_for_function("typeof setContent === 'function'", timeout=1000)
+        await page.evaluate(
+            """(message) => {return setContent(message);}""",
+            message,
+        )
+
+    try:
+        img_data = await WebRenderer.render(
+            url=konaweb("error_report"),
+            target="#main",
+            other_function=page_function,
+        )
+        return UniMessage.image(raw=img_data)
+    except playwright.async_api.Error as e:
+        logger.warning(f"渲染报错信息图片时出错了，回退到文本 ERR={e}")
+        return UniMessage.text(message)
+