Add query param to avoid resending night log emails

src/lvmapi/routers/logs.py

@@ -222,11 +222,15 @@ async def route_get_night_logs_mjd_email(
         int,
         Path(description="The MJD for which to retrieve night log."),
     ],
+    only_if_not_sent: Annotated[
+        bool,
+        Query(description="Only send the email if it has not been already been sent."),
+    ] = False,
 ):
     """Emails the night log."""
 
     mjd = mjd if mjd > 0 else get_sjd("LCO")
-    data = await email_night_log(mjd)
+    data = await email_night_log(mjd, only_if_not_sent=only_if_not_sent)
 
     return data
 

src/lvmapi/tools/logs.py

@@ -547,6 +547,7 @@ async def email_night_log(
     sjd: int | None = None,
     update_database: bool = True,
     send_slack_notification: bool = True,
+    only_if_not_sent: bool = False,
 ):
     """Emails the night log for an SJD."""
 
@@ -581,6 +582,9 @@ async def email_night_log(
         compact_lamps=True,
     )
 
+    if data["sent"] and only_if_not_sent:
+        raise RuntimeError(f"Night log for MJD {sjd} has already been sent.")
+
     observers = data["observers"] or "Overwatcher"
     date = Time(sjd - 1, format="mjd").datetime.strftime("%A, %B %-d, %Y")
     lvmweb_url = config["night_logs.lvmweb_url"] + str(sjd)