dynamic dashboard initial

apps/ui/api_client.py

@@ -0,0 +1,116 @@
+"""
+HTTP Client for fetching devices from the API Gateway.
+"""
+import logging
+from typing import Optional
+import httpx
+
+logger = logging.getLogger(__name__)
+
+
+def fetch_devices(api_base: str = "http://localhost:8001") -> list[dict]:
+    """
+    Fetch devices from the API Gateway.
+    
+    Args:
+        api_base: Base URL of the API Gateway (default: http://localhost:8001)
+        
+    Returns:
+        List of device dictionaries. Each device contains at least:
+        - device_id (str): Unique device identifier
+        - type (str): Device type (e.g., "light")
+        - name (str): Human-readable device name
+        
+        Returns empty list on error.
+    """
+    url = f"{api_base}/devices"
+    
+    try:
+        response = httpx.get(url, timeout=3.0)
+        response.raise_for_status()
+        
+        devices = response.json()
+        
+        # API returns a list directly
+        if not isinstance(devices, list):
+            logger.warning(f"Unexpected response format from {url}: expected list, got {type(devices)}")
+            return []
+        
+        logger.info(f"Fetched {len(devices)} devices from API Gateway")
+        return devices
+        
+    except httpx.TimeoutException:
+        logger.warning(f"Timeout while fetching devices from {url}")
+        return []
+        
+    except httpx.HTTPStatusError as e:
+        logger.warning(f"HTTP error {e.response.status_code} while fetching devices from {url}")
+        return []
+        
+    except httpx.RequestError as e:
+        logger.warning(f"Request error while fetching devices from {url}: {e}")
+        return []
+        
+    except Exception as e:
+        logger.warning(f"Unexpected error while fetching devices from {url}: {e}")
+        return []
+
+
+def fetch_layout(api_base: str = "http://localhost:8001") -> dict:
+    """
+    Fetch UI layout from the API Gateway.
+    
+    Args:
+        api_base: Base URL of the API Gateway (default: http://localhost:8001)
+        
+    Returns:
+        Layout dictionary with structure:
+        {
+            "rooms": [
+                {
+                    "name": str,
+                    "devices": [
+                        {
+                            "device_id": str,
+                            "title": str,
+                            "icon": str,
+                            "rank": int
+                        }
+                    ]
+                }
+            ]
+        }
+        
+        Returns empty layout on error.
+    """
+    url = f"{api_base}/layout"
+    
+    try:
+        response = httpx.get(url, timeout=3.0)
+        response.raise_for_status()
+        
+        layout = response.json()
+        
+        # API returns a dict with "rooms" key
+        if not isinstance(layout, dict) or "rooms" not in layout:
+            logger.warning(f"Unexpected response format from {url}: expected dict with 'rooms', got {type(layout)}")
+            return {"rooms": []}
+        
+        logger.info(f"Fetched layout with {len(layout['rooms'])} rooms from API Gateway")
+        return layout
+        
+    except httpx.TimeoutException:
+        logger.warning(f"Timeout while fetching layout from {url}")
+        return {"rooms": []}
+        
+    except httpx.HTTPStatusError as e:
+        logger.warning(f"HTTP error {e.response.status_code} while fetching layout from {url}")
+        return {"rooms": []}
+        
+    except httpx.RequestError as e:
+        logger.warning(f"Request error while fetching layout from {url}: {e}")
+        return {"rooms": []}
+        
+    except Exception as e:
+        logger.warning(f"Unexpected error while fetching layout from {url}: {e}")
+        return {"rooms": []}