Admins now get a little notice if they start responding to a ticket someone else is already responding to (#62025)

code/modules/admin/verbs/adminhelp.dm

@@ -177,11 +177,13 @@ GLOBAL_DATUM_INIT(ahelp_tickets, /datum/admin_help_tickets, new)
 	/// If any admins were online when the ticket was initialized
 	var/heard_by_no_admins = FALSE
 	/// The collection of interactions with this ticket. Use AddInteraction() or, preferably, admin_ticket_log()
-	var/list/_interactions
+	var/list/ticket_interactions
 	/// Statclick holder for the ticket
 	var/obj/effect/statclick/ahelp/statclick
 	/// Static counter used for generating each ticket ID
 	var/static/ticket_counter = 0
+	/// The list of clients currently responding to the opening ticket before it gets a response
+	var/list/opening_responders
 
 /**
  * Call this on its own to create a ticket, don't manually assign current_ticket
@@ -214,7 +216,7 @@ GLOBAL_DATUM_INIT(ahelp_tickets, /datum/admin_help_tickets, new)
 	TimeoutVerb()
 
 	statclick = new(null, src)
-	_interactions = list()
+	ticket_interactions = list()
 
 	if(is_bwoink)
 		AddInteraction("<font color='blue'>[key_name_admin(usr)] PM'd [LinkedReplyName()]</font>")
@@ -240,7 +242,7 @@ GLOBAL_DATUM_INIT(ahelp_tickets, /datum/admin_help_tickets, new)
 	if(heard_by_no_admins && usr && usr.ckey != initiator_ckey)
 		heard_by_no_admins = FALSE
 		send2adminchat(initiator_ckey, "Ticket #[id]: Answered by [key_name(usr)]")
-	_interactions += "[time_stamp()]: [formatted_message]"
+	ticket_interactions += "[time_stamp()]: [formatted_message]"
 
 //Removes the ahelp verb and returns it after 2 minutes
 /datum/admin_help/proc/TimeoutVerb()
@@ -443,7 +445,7 @@ GLOBAL_DATUM_INIT(ahelp_tickets, /datum/admin_help_tickets, new)
 	else
 		dat += "<b>DISCONNECTED</b>[FOURSPACES][ClosureLinks(ref_src)]<br>"
 	dat += "<br><b>Log:</b><br><br>"
-	for(var/I in _interactions)
+	for(var/I in ticket_interactions)
 		dat += "[I]<br>"
 
 	// Append any tickets also opened by this user if relevant

code/modules/admin/verbs/adminpm.dm

@@ -64,9 +64,19 @@
 
 	var/datum/admin_help/AH = C.current_ticket
 
+	var/message_prompt = "Message:"
+
+	if(AH?.opening_responders && length(AH.ticket_interactions) == 1)
+		SEND_SOUND(src, sound('sound/machines/buzz-sigh.ogg', volume=30))
+		message_prompt += "\n\n**This ticket is already being responded to by: [english_list(AH.opening_responders)]**"
+
 	if(AH)
 		message_admins("[key_name_admin(src)] has started replying to [key_name_admin(C, 0, 0)]'s admin help.")
-	var/msg = input(src,"Message:", "Private message to [C.holder?.fakekey ? "an Administrator" : key_name(C, 0, 0)].") as message|null
+		if(length(AH.ticket_interactions) == 1) // add the admin who is currently responding to the list of people responding
+			LAZYADD(AH.opening_responders, src)
+
+	var/msg = input(src, message_prompt, "Private message to [C.holder?.fakekey ? "an Administrator" : key_name(C, 0, 0)].") as message|null
+	LAZYREMOVE(AH.opening_responders, src)
 	if (!msg)
 		message_admins("[key_name_admin(src)] has cancelled their reply to [key_name_admin(C, 0, 0)]'s admin help.")
 		return