config: Use env var for proxy URL

- [add] Implement `get_proxy_url` and `validate_proxy_url` functions (utils.py:82)
- [config] Import `get_proxy_url` and `validate_proxy_url` (hf_token_utils.py:10)
- [config] Change `proxy_url` default to `None` in `get_proxy_token` (hf_token_utils.py:18)
- [config] Use `validate_proxy_url` and `get_proxy_url` in `get_proxy_token` when `proxy_url` is `None` (hf_token_utils.py:29-33)
- [config] Change `proxy_url` default to `None` in `report_token_status` (hf_token_utils.py:90)
- [config] Use `validate_proxy_url` and `get_proxy_url` in `report_token_status` when `proxy_url` is `None` (hf_token_utils.py:100-105)
- [docs] Update setup instructions to include `PROXY_URL` secret (README.md:36)
- [docs] Remove hardcoded proxy server URL from documentation (README.md:40)
- [docs] Add `PROXY_URL Missing` to troubleshooting section (README.md:219)

README.md

@@ -36,14 +36,17 @@ A comprehensive AI platform that combines conversational AI and text-to-image ge
 
 ### 1. HuggingFace Space Secrets
 
-Add the following secret to your HuggingFace Space:
+Add the following secrets to your HuggingFace Space:
 
 - **Key**: `PROXY_KEY`
 - **Value**: Your HF-Inferoxy proxy API key
 
+- **Key**: `PROXY_URL`
+- **Value**: Your HF-Inferoxy proxy server URL (e.g., `https://hf-proxy.example.com`)
+
 ### 2. HF-Inferoxy Server
 
-The app is configured to use the HF-Inferoxy server at: `http://scw.nazdev.tech:11155`
+The app will use the HF-Inferoxy server URL specified in the `PROXY_URL` secret.
 
 ### 3. Dependencies
 
@@ -219,8 +222,9 @@ Prompt: "Help me debug this Python code: [paste code]"
 
 #### Setup Issues
 1. **PROXY_KEY Missing**: Ensure the secret is set in your HuggingFace Space settings
-2. **Connection Errors**: Verify the HF-Inferoxy server is accessible
-3. **Import Errors**: Check that all dependencies are properly installed
+2. **PROXY_URL Missing**: Ensure the proxy server URL secret is set in your HuggingFace Space settings
+3. **Connection Errors**: Verify the HF-Inferoxy server is accessible
+4. **Import Errors**: Check that all dependencies are properly installed
 
 #### Chat Issues
 1. **No Response**: Check model name format and provider availability

hf_token_utils.py

@@ -5,18 +5,19 @@ import json
 import time
 from typing import Dict, Optional, Any, Tuple
 from requests.exceptions import ConnectionError, Timeout, RequestException
+from utils import get_proxy_url, validate_proxy_url
 
 # Timeout and retry configuration
 REQUEST_TIMEOUT = 30  # 30 seconds timeout
 RETRY_ATTEMPTS = 2
 RETRY_DELAY = 1  # 1 second delay between retries
 
-def get_proxy_token(proxy_url: str = "http://scw.nazdev.tech:11155", api_key: str = None) -> Tuple[str, str]:
+def get_proxy_token(proxy_url: str = None, api_key: str = None) -> Tuple[str, str]:
     """
     Get a valid token from the proxy server with timeout and retry logic.
     
     Args:
-        proxy_url: URL of the HF-Inferoxy server
+        proxy_url: URL of the HF-Inferoxy server (optional, will use PROXY_URL env var if not provided)
         api_key: Your API key for authenticating with the proxy server
         
     Returns:
@@ -27,6 +28,13 @@ def get_proxy_token(proxy_url: str = "http://scw.nazdev.tech:11155", api_key: st
         TimeoutError: If request times out
         Exception: If token provisioning fails
     """
+    # Get proxy URL from environment if not provided
+    if proxy_url is None:
+        is_valid, error_msg = validate_proxy_url()
+        if not is_valid:
+            raise Exception(error_msg)
+        proxy_url = get_proxy_url()
+    
     headers = {}
     if api_key:
         headers["Authorization"] = f"Bearer {api_key}"
@@ -90,7 +98,7 @@ def report_token_status(
     token_id: str, 
     status: str = "success", 
     error: Optional[str] = None,
-    proxy_url: str = "http://scw.nazdev.tech:11155",
+    proxy_url: str = None,
     api_key: str = None
 ) -> bool:
     """
@@ -100,12 +108,20 @@ def report_token_status(
         token_id: ID of the token to report (from get_proxy_token)
         status: Status to report ('success' or 'error')
         error: Error message if status is 'error'
-        proxy_url: URL of the HF-Inferoxy server
+        proxy_url: URL of the HF-Inferoxy server (optional, will use PROXY_URL env var if not provided)
         api_key: Your API key for authenticating with the proxy server
         
     Returns:
         True if report was accepted, False otherwise
     """
+    # Get proxy URL from environment if not provided
+    if proxy_url is None:
+        is_valid, error_msg = validate_proxy_url()
+        if not is_valid:
+            print(f"❌ {error_msg}")
+            return False
+        proxy_url = get_proxy_url()
+    
     payload = {"token_id": token_id, "status": status}
     
     if error:

utils.py

@@ -82,6 +82,19 @@ def validate_proxy_key():
     return True, ""
 
 
+def get_proxy_url():
+    """Get the proxy URL from environment variables."""
+    return os.getenv("PROXY_URL")
+
+
+def validate_proxy_url():
+    """Validate that the proxy URL is available."""
+    proxy_url = get_proxy_url()
+    if not proxy_url:
+        return False, "❌ Error: PROXY_URL not found in environment variables. Please set it in your HuggingFace Space secrets."
+    return True, ""
+
+
 def parse_model_and_provider(model_name):
     """
     Parse model name and provider from a string like 'model:provider'.