Update app.py

app.py

@@ -3,9 +3,9 @@ import os
 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
+import re
+import subprocess
+import sys
 from dotenv import load_dotenv
 
 # --- Playwright Imports for Web Scraping ---
@@ -23,70 +23,19 @@ from langchain_core.messages import SystemMessage, HumanMessage
 # On Hugging Face Spaces, secrets are automatically available as environment variables.
 load_dotenv()
 
-# --- Playwright Browser and System Dependency Installation Workaround for Hugging Face Spaces ---
-# This block ensures Playwright browsers AND all necessary system dependencies are installed when the app starts.
-# It checks if browsers are already installed or if an attempt has been made.
+# --- Playwright Browser Installation Workaround for Hugging Face Spaces ---
+# This block ensures Playwright browsers are installed when the app starts.
+# Assumes system dependencies are handled by packages.txt during the build.
 PLAYWRIGHT_BROWSERS_PATH = os.path.expanduser("~/.cache/ms-playwright")
 PLAYWRIGHT_INSTALLED_FLAG = "PLAYWRIGHT_BROWSERS_INSTALLED"
 
-# Define ALL system packages required for Playwright on Debian Bookworm
-# These will be installed manually via subprocess.
-ALL_PLAYWRIGHT_APT_PACKAGES = [
-    "chromium", # Basic chromium package for good measure
-    "libgstreamer1.0-0",
-    "libgtk-4-1",
-    "libgraphene-1.0-0",
-    "libwoff2-1.0", # Reverted to original name, will be installed via apt-get in-app
-    "libgstreamer-plugins-base1.0-0",
-    "libgstreamer-gl1.0-0",
-    "libgstreamer-plugins-bad1.0-0",
-    "libavif15",
-    "libharfbuzz-icu0",
-    "libenchant-2-2",
-    "libhyphen0",
-    "libmanette-0.2-0",
-    "libnss3",
-    "libxss1",
-    "libasound2",
-    "libgbm-dev",
-    "libatk-bridge2.0-0",
-    "libcups2",
-    "libdrm-dev",
-    "libgdk-pixbuf2.0-0",
-    "libglib2.0-0",
-    "libjpeg-turbo8", # Reverted to original name, will be installed via apt-get in-app
-    "libnspr4",
-    "libxcb-dri3-0",
-    "libxcomposite1",
-    "libxrandr2",
-    "libxshmfence1",
-    "libxtst6",
-    "xdg-utils"
-]
-
 # Check if installation has been attempted during this container's lifetime
 if not os.path.exists(os.path.join(PLAYWRIGHT_BROWSERS_PATH, "chromium")) and \
    os.environ.get(PLAYWRIGHT_INSTALLED_FLAG, "false") == "false":
-    print("Playwright browsers and/or system dependencies not found. Attempting a comprehensive installation now (this will take several minutes)...")
+    print("Playwright browsers not found. Attempting to install them now (this might take a moment)...")
     try:
-        # First, update apt package lists
-        print("Updating apt package lists...")
-        # Use stdout=subprocess.PIPE, stderr=subprocess.PIPE to capture output and prevent it from filling up logs unless an error occurs
-        subprocess.run(["sudo", "apt-get", "update", "-qq"], check=True, capture_output=True)
-        print("Apt package lists updated.")
-
-        # Then, install all necessary system dependencies via apt-get directly
-        print(f"Installing all Playwright system dependencies via apt-get: {', '.join(ALL_PLAYWRIGHT_APT_PACKAGES)}...")
-        apt_install_command = ["sudo", "apt-get", "install", "-y"] + ALL_PLAYWRIGHT_APT_PACKAGES
-        result = subprocess.run(apt_install_command, check=True, capture_output=True, text=True)
-        print("All system dependencies installed successfully!")
-        if result.stdout:
-            print("APT Install STDOUT:\n", result.stdout)
-        if result.stderr:
-            print("APT Install STDERR:\n", result.stderr)
-
-        # Finally, run the playwright install command for the browsers themselves
-        print("Running playwright install for browsers...")
+        # Run the playwright install command for the browsers themselves.
+        # This should now succeed if the system dependencies from packages.txt are met.
         result = subprocess.run([sys.executable, "-m", "playwright", "install"], check=True, capture_output=True, text=True)
         os.environ[PLAYWRIGHT_INSTALLED_FLAG] = "true" # Mark as installed for this session
         print("Playwright browsers installed successfully!")
@@ -96,11 +45,11 @@ if not os.path.exists(os.path.join(PLAYWRIGHT_BROWSERS_PATH, "chromium")) and \
             print("Playwright Install STDERR:\n", result.stderr)
             
     except subprocess.CalledProcessError as e:
-        print(f"Error during Playwright/apt-get installation: {e}. STDOUT: {e.stdout.decode()} STDERR: {e.stderr.decode()}")
+        print(f"Error during Playwright browser installation: {e}. STDOUT: {e.stdout.decode()} STDERR: {e.stderr.decode()}")
     except Exception as e:
-        print(f"Unexpected error during Playwright browser or system dependency installation: {e}")
+        print(f"Unexpected error during Playwright browser installation: {e}")
 else:
-    print("Playwright browsers and required system dependencies already appear to be installed or installation skipped.")
+    print("Playwright browsers already appear to be installed or installation skipped.")
 
 
 # --- 1. API KEY CHECK ---