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import base64
import asyncio
from typing import AsyncGenerator
from playwright.async_api import BrowserContext, Error as PlaywrightError
async def capture_screenshot(browser_context: BrowserContext) -> str:
"""Capture and encode a screenshot"""
try:
# Get the implementation context
context = getattr(browser_context, 'impl_context', None)
if not context:
return "<div>No browser context implementation available</div>"
# Get all pages
all_pages = context.pages
if not all_pages:
return "<div>Waiting for page to be available...</div>"
# Use the first page
page = all_pages[1]
try:
screenshot = await page.screenshot(
type='jpeg',
quality=75,
scale="css"
)
encoded = base64.b64encode(screenshot).decode('utf-8')
return f'<img src="data:image/jpeg;base64,{encoded}" style="width:100%; max-width:1200px; border:1px solid #ccc;">'
except Exception as e:
return f"<div class='error'>Screenshot failed: {str(e)}</div>"
except Exception as e:
return f"<div class='error'>Screenshot error: {str(e)}</div>"
async def stream_browser_view(browser_context: BrowserContext) -> AsyncGenerator[str, None]:
"""Stream browser view to the UI"""
try:
while True:
try:
screenshot_html = await capture_screenshot(browser_context)
yield screenshot_html
await asyncio.sleep(0.2) # 5 FPS
except Exception as e:
yield f"<div class='error'>Screenshot error: {str(e)}</div>"
await asyncio.sleep(1) # Wait before retrying
except Exception as e:
yield f"<div class='error'>Stream error: {str(e)}</div>"
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