Complete admin dashboard with user management, config and settings tabs

main.py

@@ -1005,6 +1005,113 @@ async def get_tracked_files(is_admin: bool = Depends(require_admin)):
     }
 
 
+@app.get("/admin/users")
+async def get_admin_users(is_admin: bool = Depends(require_admin)):
+    """Get all users with their usage stats (requires admin auth)"""
+    from services.auth_service import load_users
+    from models.subscription import PLANS
+    
+    users_data = load_users()
+    users_list = []
+    
+    for user_id, user_data in users_data.items():
+        plan = user_data.get("plan", "free")
+        plan_info = PLANS.get(plan, PLANS["free"])
+        
+        users_list.append({
+            "id": user_id,
+            "email": user_data.get("email", ""),
+            "name": user_data.get("name", ""),
+            "plan": plan,
+            "subscription_status": user_data.get("subscription_status", "active"),
+            "docs_translated_this_month": user_data.get("docs_translated_this_month", 0),
+            "pages_translated_this_month": user_data.get("pages_translated_this_month", 0),
+            "extra_credits": user_data.get("extra_credits", 0),
+            "created_at": user_data.get("created_at", ""),
+            "plan_limits": {
+                "docs_per_month": plan_info.get("docs_per_month", 0),
+                "max_pages_per_doc": plan_info.get("max_pages_per_doc", 0),
+            }
+        })
+    
+    # Sort by created_at descending (newest first)
+    users_list.sort(key=lambda x: x.get("created_at", ""), reverse=True)
+    
+    return {
+        "total": len(users_list),
+        "users": users_list
+    }
+
+
+@app.get("/admin/stats")
+async def get_admin_stats(is_admin: bool = Depends(require_admin)):
+    """Get comprehensive admin statistics (requires admin auth)"""
+    from services.auth_service import load_users
+    from models.subscription import PLANS
+    
+    users_data = load_users()
+    
+    # Calculate stats
+    total_users = len(users_data)
+    plan_distribution = {}
+    total_docs_translated = 0
+    total_pages_translated = 0
+    active_users = 0  # Users who translated something this month
+    
+    for user_data in users_data.values():
+        plan = user_data.get("plan", "free")
+        plan_distribution[plan] = plan_distribution.get(plan, 0) + 1
+        
+        docs = user_data.get("docs_translated_this_month", 0)
+        pages = user_data.get("pages_translated_this_month", 0)
+        total_docs_translated += docs
+        total_pages_translated += pages
+        
+        if docs > 0:
+            active_users += 1
+    
+    # Get cache stats
+    cache_stats = _translation_cache.get_stats()
+    
+    return {
+        "users": {
+            "total": total_users,
+            "active_this_month": active_users,
+            "by_plan": plan_distribution
+        },
+        "translations": {
+            "docs_this_month": total_docs_translated,
+            "pages_this_month": total_pages_translated
+        },
+        "cache": cache_stats,
+        "config": {
+            "translation_service": config.TRANSLATION_SERVICE,
+            "max_file_size_mb": config.MAX_FILE_SIZE_MB,
+            "supported_extensions": list(config.SUPPORTED_EXTENSIONS)
+        }
+    }
+
+
+@app.post("/admin/config/provider")
+async def update_default_provider(
+    provider: str = Form(...),
+    is_admin: bool = Depends(require_admin)
+):
+    """Update the default translation provider (requires admin auth)"""
+    valid_providers = ["google", "openrouter", "ollama", "deepl", "libre", "openai"]
+    if provider not in valid_providers:
+        raise HTTPException(status_code=400, detail=f"Invalid provider. Must be one of: {valid_providers}")
+    
+    # Update config (in production, this would persist to database/env)
+    config.TRANSLATION_SERVICE = provider
+    
+    return {
+        "status": "success",
+        "message": f"Default provider updated to {provider}",
+        "provider": provider
+    }
+
+
 if __name__ == "__main__":
     import uvicorn
     uvicorn.run("main:app", host="0.0.0.0", port=8000, reload=True)