fix: gitignore + testing map structure

ref: N25B-205

.gitignore

@@ -199,7 +199,7 @@ cython_debug/
 #   that can be found at https://github.com/github/gitignore/blob/main/Global/VisualStudioCode.gitignore
 #   and can be added to the global gitignore or merged into this file. However, if you prefer, 
 #   you could uncomment the following to ignore the entire vscode folder
-# .vscode/
+.vscode/
 
 # Ruff stuff:
 .ruff_cache/

src/control_backend/api/v1/endpoints/sse_ping.py

@@ -0,0 +1,26 @@
+from fastapi import APIRouter, Request
+from fastapi.responses import StreamingResponse
+import datetime
+import asyncio
+
+router = APIRouter()
+
+@router.get("/sse_ping")
+async def sse_ping(request: Request):
+    """
+    Endpoint for Server-Sent Events.
+    """
+    async def event_generator():
+        while True:
+            # If connection to client closes, stop sending events
+            if await request.is_disconnected():
+                break
+            
+            # Send message containing current time every second
+            current_time = datetime.datetime.now().strftime("%H:%M:%S")
+            yield f"data: Server time: {current_time}\n\n" # \n\n is needed to separate events (SSE is text-based)
+            await asyncio.sleep(1)
+
+    return StreamingResponse(event_generator(), media_type="text/event-stream") # media_type specifies that this connection is for event streams
+
+

src/control_backend/api/v1/router.py

@@ -1,6 +1,6 @@
 from fastapi.routing import APIRouter
 
-from control_backend.api.v1.endpoints import message, sse
+from control_backend.api.v1.endpoints import message, sse, sse_ping
 
 api_router = APIRouter()
 
@@ -13,3 +13,8 @@ api_router.include_router(
     sse.router,
     tags=["SSE"]
 )
+
+api_router.include_router(
+    sse_ping.router,
+    tags=["SSE_ping"]
+)