feat: update endpoint to support the new UI request type

The UI now sends a Program as defined in our schemas.

ref: N25B-200

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

@@ -1,10 +1,10 @@
-import json
 import logging
 
 from fastapi import APIRouter, HTTPException, Request
+from pydantic import ValidationError
 
 from control_backend.schemas.message import Message
-from control_backend.schemas.program import Phase
+from control_backend.schemas.program import Program
 
 logger = logging.getLogger(__name__)
 router = APIRouter()
@@ -16,37 +16,20 @@ async def receive_message(program: Message, request: Request):
     Receives a BehaviorProgram as a stringified JSON list inside `message`.
     Converts it into real Phase objects.
     """
-    logger.info("Received raw program: ")
-    logger.debug("%s", program)
+    logger.debug("Received raw program: %s", program)
     raw_str = program.message  # This is the JSON string
 
-    # Convert Json into dict.
+    # Validate program
     try:
-        program_list = json.loads(raw_str)
-    except json.JSONDecodeError as e:
-        logger.error("Failed to decode program JSON: %s", e)
-        raise HTTPException(status_code=400, detail="Undecodeable Json string") from None
-
-    # Validate Phases
-    try:
-        phases: list[Phase] = [Phase(**phase) for phase in program_list]
-    except Exception as e:
-        logger.error("❌ Failed to convert to Phase objects: %s", e)
-        raise HTTPException(status_code=400, detail="Non-Phase String") from None
-
-    logger.info(f"Succesfully recieved {len(phases)} Phase(s).")
-    for p in phases:
-        logger.info(
-            f"Phase {p.id}: "
-            f"{len(p.phaseData.norms)} norms, "
-            f"{len(p.phaseData.goals)} goals, "
-            f"{len(p.phaseData.triggers) if hasattr(p.phaseData, 'triggers') else 0} triggers"
-        )
+        program = Program.model_validate_json(raw_str)
+    except ValidationError as e:
+        logger.error("Failed to validate program JSON: %s", e)
+        raise HTTPException(status_code=400, detail="Not a valid program") from None
 
     # send away
     topic = b"program"
-    body = json.dumps([p.model_dump() for p in phases]).encode("utf-8")
+    body = program.model_dump_json().encode()
     pub_socket = request.app.state.endpoints_pub_socket
     await pub_socket.send_multipart([topic, body])
 
-    return {"status": "Program parsed", "phase_count": len(phases)}
+    return {"status": "Program parsed"}