Add GET endpoint for /countries

endpoints/countries.get.py

@@ -0,0 +1,23 @@
+# Entity: Country
+
+from fastapi import APIRouter, HTTPException, status
+from typing import List
+import httpx
+from core.models.country import Country
+from core.schemas.country import CountrySchema
+
+router = APIRouter()
+
+@router.get("/countries", status_code=200, response_model=List[CountrySchema])
+async def get_countries():
+    """Get list of countries from external API"""
+    async with httpx.AsyncClient() as client:
+        try:
+            response = await client.get("https://restcountries.com/v3.1/all")
+            response.raise_for_status()
+            return response.json()
+        except httpx.HTTPError:
+            raise HTTPException(
+                status_code=status.HTTP_503_SERVICE_UNAVAILABLE,
+                detail="Unable to fetch countries from external API"
+            )