Added function fro credits

oai.py

@@ -70,6 +70,35 @@ except Exception as e:
     models_data = []
     text_models = []
 
+# **Function to fetch credit information from OpenRouter API**
+def get_credits(api_key: str, base_url: str = OPENROUTER_BASE_URL) -> Optional[dict]:
+    """
+    Fetch credit information from OpenRouter API.
+    
+    Returns a dict with 'total_credits', 'used_credits', 'credits_left' or None on error.
+    Based on OpenRouter's /credits endpoint ([openrouter.ai/docs/limits](https://openrouter.ai/docs/limits)).
+    """
+    if not api_key:
+        return None
+    url = f"{base_url}/credits"
+    headers = {"Authorization": f"Bearer {api_key}"}
+    try:
+        response = requests.get(url, headers=headers)
+        response.raise_for_status()
+        data = response.json().get('data', {})
+        total_credits = float(data.get('total_credits', 0))
+        total_usage = float(data.get('total_usage', 0))
+        credits_left = total_credits - total_usage
+        return {
+            'total_credits': f"${total_credits:.2f}",
+            'used_credits': f"${total_usage:.2f}",
+            'credits_left': f"${credits_left:.2f}"
+        }
+    except Exception as e:
+        # Gracefully handle errors (e.g., invalid API key, network issues)
+        console.print(f"[bold red]Error fetching credits: {e}[/]")
+        return None
+
 # Function to clear the screen using ANSI escape sequences (cross-platform)
 def clear_screen():
     """Clear the terminal screen using ANSI escape codes, with fallback to newlines."""
@@ -81,6 +110,7 @@ def clear_screen():
         # Fallback: Fill with newlines (simpler, per [medium.com](https://medium.com/@ryan_forrester_/c-screen-clearing-how-to-guide-cff5bf764ccd))
         print("\n" * 100)
 
+
 @app.command()
 def chat():
     """Start the oAI chat app with OpenRouter models."""
@@ -153,7 +183,7 @@ def chat():
                         console.print("[bold red]Invalid input. Enter a number.[/]")
                 continue
 
-            # Handle /config command (updated to include stream toggle)
+            # Handle /config command (**UPDATED:** Now includes credit info)
             if user_input.startswith("/config"):
                 args = user_input[8:].strip().lower()  # Get args after "/config"
                 if args == "api":
@@ -195,16 +225,37 @@ def chat():
                     table.add_row("Streaming", "Enabled" if STREAM_ENABLED == "on" else "Disabled")
                     table.add_row("Database", str(database) or "[Not set]")
                     table.add_row("Current Model", "[Not set]" if selected_model is None else str(selected_model["name"]))
+                    
+                    # Fetch and display credit info
+                    credits = get_credits(API_KEY, OPENROUTER_BASE_URL)
+                    if credits:
+                        table.add_row("Total Credits", credits['total_credits'])
+                        table.add_row("Used Credits", credits['used_credits'])
+                        table.add_row("Credits Left", credits['credits_left'])
+                    else:
+                        table.add_row("Total Credits", "[Unavailable - Check API key]")
+                        table.add_row("Used Credits", "[Unavailable - Check API key]")
+                        table.add_row("Credits Left", "[Unavailable - Check API key]")
+                    
                     console.print(Panel(table, title="[bold green]Current Configurations[/]", title_align="left"))
                 continue
 
+            # **Handle /credits command to display credits left**
+            if user_input.lower() == "/credits":
+                credits = get_credits(API_KEY, OPENROUTER_BASE_URL)
+                if credits:
+                    console.print(f"[bold green]Credits left: {credits['credits_left']}[/]")
+                else:
+                    console.print("[bold red]Unable to fetch credits. Check your API key or network.[/]")
+                continue
+
             # Handle /clear command to clear the screen
             if user_input.lower() == "/clear":
                 clear_screen()
                 console.print("[bold cyan]Screen cleared. Ready for your next input![/]")
                 continue
 
-            # Handle /help command (updated: now includes /clear)
+            # Handle /help command (**UPDATED:** Now includes /credits)
             if user_input.lower() == "/help":
                 help_table = Table("Command", "Description", "Example", show_header=True, header_style="bold cyan")
                 help_table.add_row(
@@ -229,8 +280,13 @@ def chat():
                 )
                 help_table.add_row(
                     "/config",
-                    "View all current configurations.",
-                    "/config\n(Displays table of API Key, Base URL, etc.)"
+                    "View all current configurations, including credits.",
+                    "/config\n(Displays table with credits info)"
+                )
+                help_table.add_row(
+                    "/credits",
+                    "Display credits left on your OpenRouter account.",
+                    "/credits\n[bold green]Credits left: $4.23[/bold green]"
                 )
                 help_table.add_row(
                     "/clear",