Add endpoint to get inbound by id

app/inbound_sms/rest.py

@@ -1,11 +1,19 @@
+import uuid
+
 from flask import (
     Blueprint,
     jsonify,
     request
 )
+from werkzeug.exceptions import abort
+
 from notifications_utils.recipients import validate_and_format_phone_number
 
-from app.dao.inbound_sms_dao import dao_get_inbound_sms_for_service, dao_count_inbound_sms_for_service
+from app.dao.inbound_sms_dao import (
+    dao_get_inbound_sms_for_service,
+    dao_count_inbound_sms_for_service,
+    dao_get_inbound_sms_by_id
+)
 from app.errors import register_errors
 
 inbound_sms = Blueprint(
@@ -40,3 +48,16 @@ def get_inbound_sms_summary_for_service(service_id):
         count=count,
         most_recent=most_recent[0].created_at.isoformat() if most_recent else None
     )
+
+
+@inbound_sms.route('/<inbound_sms_id>', methods=['GET'])
+def get_inbound_by_id(service_id, inbound_sms_id):
+    # TODO: Add JSON Schema here
+    try:
+        validated_uuid = uuid.UUID(inbound_sms_id)
+    except (ValueError, AttributeError):
+        abort(400)
+
+    inbound_sms = dao_get_inbound_sms_by_id(validated_uuid)
+
+    return jsonify(inbound_sms.serialize()), 200