REFACTOR ALL APIs fix 1

gateway/app/routes/pos.py

@@ -0,0 +1,89 @@
+"""
+POS routes for API Gateway - Global POS endpoints
+"""
+
+from fastapi import APIRouter, Request, Response, HTTPException
+from fastapi.responses import JSONResponse
+import httpx
+import logging
+
+from app.core.config import settings
+
+logger = logging.getLogger(__name__)
+router = APIRouter()
+
+# ================================================================
+# GLOBAL POS ENDPOINTS (No tenant context required)
+# ================================================================
+
+@router.api_route("/supported-systems", methods=["GET", "OPTIONS"])
+async def proxy_supported_systems(request: Request):
+    """Proxy supported POS systems request to POS service"""
+    target_path = "/api/v1/pos/supported-systems"
+    return await _proxy_to_pos_service(request, target_path)
+
+# ================================================================
+# PROXY HELPER FUNCTIONS
+# ================================================================
+
+async def _proxy_to_pos_service(request: Request, target_path: str):
+    """Proxy request to POS service"""
+
+    # Handle OPTIONS requests directly for CORS
+    if request.method == "OPTIONS":
+        return Response(
+            status_code=200,
+            headers={
+                "Access-Control-Allow-Origin": settings.CORS_ORIGINS_LIST,
+                "Access-Control-Allow-Methods": "GET, POST, PUT, DELETE, OPTIONS",
+                "Access-Control-Allow-Headers": "Content-Type, Authorization, X-Tenant-ID",
+                "Access-Control-Allow-Credentials": "true",
+                "Access-Control-Max-Age": "86400"
+            }
+        )
+
+    try:
+        url = f"{settings.POS_SERVICE_URL}{target_path}"
+
+        # Forward headers
+        headers = dict(request.headers)
+        headers.pop("host", None)
+
+        # Add query parameters
+        params = dict(request.query_params)
+
+        timeout_config = httpx.Timeout(
+            connect=30.0,
+            read=60.0,
+            write=30.0,
+            pool=30.0
+        )
+
+        async with httpx.AsyncClient(timeout=timeout_config) as client:
+            response = await client.request(
+                method=request.method,
+                url=url,
+                headers=headers,
+                params=params
+            )
+
+            # Handle different response types
+            if response.headers.get("content-type", "").startswith("application/json"):
+                try:
+                    content = response.json()
+                except:
+                    content = {"message": "Invalid JSON response from service"}
+            else:
+                content = response.text
+
+            return JSONResponse(
+                status_code=response.status_code,
+                content=content
+            )
+
+    except Exception as e:
+        logger.error(f"Unexpected error proxying to POS service {target_path}: {e}")
+        raise HTTPException(
+            status_code=500,
+            detail="Internal gateway error"
+        )