Update app.py

app.py

@@ -4,6 +4,8 @@ import asyncio
 import json
 import datetime
 import re       # For regular expressions (used in voucher scraping)
+import subprocess # For running shell commands
+import sys      # For sys.executable
 from dotenv import load_dotenv
 
 # --- Playwright Imports for Web Scraping ---
@@ -21,6 +23,30 @@ from langchain_core.messages import SystemMessage, HumanMessage
 # On Hugging Face Spaces, secrets are automatically available as environment variables.
 load_dotenv()
 
+# --- Playwright Browser Installation Workaround for Hugging Face Spaces ---
+# This block ensures Playwright browsers are installed when the app starts,
+# especially useful when setup.sh is not reliably executed or for cold starts.
+# It checks if browsers are already installed or if an attempt has been made.
+PLAYWRIGHT_BROWSERS_PATH = os.path.expanduser("~/.cache/ms-playwright")
+# Use a custom environment variable to track if installation has been attempted during this container's lifetime
+# This prevents it from running on every single request.
+if not os.path.exists(os.path.join(PLAYWRIGHT_BROWSERS_PATH, "chromium")) and \
+   os.environ.get("PLAYWRIGHT_BROWSERS_INSTALLED", "false") == "false":
+    print("Playwright browsers not found. Attempting to install them now (this might take a moment)...")
+    try:
+        # Run the playwright install command as a subprocess
+        # sys.executable ensures we use the correct Python interpreter's playwright
+        subprocess.run([sys.executable, "-m", "playwright", "install"], check=True)
+        os.environ["PLAYWRIGHT_BROWSERS_INSTALLED"] = "true" # Mark as installed for this session
+        print("Playwright browsers installed successfully!")
+    except subprocess.CalledProcessError as e:
+        print(f"Error installing Playwright browsers: {e}. Output: {e.stdout.decode() if e.stdout else ''} {e.stderr.decode() if e.stderr else ''}")
+    except Exception as e:
+        print(f"Unexpected error during Playwright browser installation: {e}")
+else:
+    print("Playwright browsers already appear to be installed or installation skipped.")
+
+
 # --- 1. API KEY CHECK ---
 # This block ensures that the necessary API keys are set before the application starts.
 try: