swaync: move the pkill logic into swaync-fbcli

hosts/common/programs/swaynotificationcenter/scripts.nix

@@ -2,21 +2,6 @@
 # it describes special things to do in response to specific notifications,
 # e.g. sound a ringer when we get a call, ...
 { pkgs }:
-let
-  # we do this because swaync's exec naively splits the command on space to produce its argv, rather than parsing the shell.
-  # [ "pkill" "-f" "fbcli" "--event" ... ]  -> breaks pkill
-  # [ "pkill" "-f" "fbcli --event ..." ]    -> is what we want
-  fbcli-stop-wrapper = pkgs.writeShellApplication {
-    name = "fbcli-stop";
-    runtimeInputs = [
-      pkgs.procps  # for pkill
-    ];
-    text = ''
-      pkill -e -f "swaync-fbcli $*"
-    '';
-  };
-  fbcli-stop = "${fbcli-stop-wrapper}/bin/fbcli-stop";
-in
 {
   # a script can match regex on these fields. only fired if all listed fields match:
   # - app-name
@@ -43,39 +28,39 @@ in
   # should also be possible to trigger via any messaging app
   fbcli-test-im = {
     body = "test:message";
-    exec = "swaync-fbcli --event proxied-message-new-instant";
+    exec = "swaync-fbcli start --event proxied-message-new-instant";
   };
   fbcli-test-call = {
     body = "test:call";
-    exec = "swaync-fbcli --event phone-incoming-call -t 20";
+    exec = "swaync-fbcli start --event phone-incoming-call -t 20";
   };
   fbcli-test-call-stop = {
     body = "test:call-stop";
-    exec = "${fbcli-stop} --event phone-incoming-call -t 20'";
+    exec = "swaync-fbcli stop --event phone-incoming-call -t 20'";
   };
 
   incoming-im-known-app-name = {
     # trigger notification sound on behalf of these IM clients.
     app-name = "(Chats|Dino|discord|dissent|Element|Fractal)";
     body = "^(?!Incoming call).*$";  #< don't match Dino Incoming calls
-    exec = "swaync-fbcli --event proxied-message-new-instant";
+    exec = "swaync-fbcli start --event proxied-message-new-instant";
   };
   incoming-im-known-desktop-entry = {
     # trigger notification sound on behalf of these IM clients.
     # these clients don't have an app-name (listed as "<unknown>"), but do have a desktop-entry
     desktop-entry = "com.github.uowuo.abaddon";
-    exec = "swaync-fbcli --event proxied-message-new-instant";
+    exec = "swaync-fbcli start --event proxied-message-new-instant";
   };
   incoming-call = {
     app-name = "Dino";
     body = "^Incoming call$";
-    exec = "swaync-fbcli --event phone-incoming-call -t 20";
+    exec = "swaync-fbcli start --event phone-incoming-call -t 20";
   };
   incoming-call-acted-on = {
     # when the notification is clicked, stop sounding the ringer
     app-name = "Dino";
     body = "^Incoming call$";
     run-on = "action";
-    exec = "${fbcli-stop} --event phone-incoming-call -t 20";
+    exec = "swaync-fbcli stop --event phone-incoming-call -t 20";
   };
 }

hosts/common/programs/swaynotificationcenter/swaync-fbcli

@@ -1,12 +1,9 @@
 #!/usr/bin/env nix-shell
 #!nix-shell -i bash -p feedbackd -p procps -p swaynotificationcenter
 
-# if in Do Not Disturb, don't do any feedback
-# TODO: better solution is to actually make use of feedbackd profiles.
-#       i.e. set profile to `quiet` when in DnD mode
-if [ "$SWAYNC_URGENCY" != "Critical" ] && [ "$(swaync-client --get-dnd)" = "true" ]; then
-  exit
-fi
+action="$1"
+shift
+fbcliargs=("$@")
 
 # kill children if killed, to allow that killing this parent process will end the real fbcli call
 cleanup() {
@@ -14,12 +11,35 @@ cleanup() {
   pkill -P "$child"
   exit 0  # exit cleanly to avoid swaync alerting a script failure
 }
-trap cleanup SIGINT SIGQUIT SIGTERM
 
-# feedbackd stops playback when the caller exits
-# and fbcli will exit immediately if it has no stdin.
-# so spoof a stdin.
-# TODO: this maybe pegs CPU at 100% when receiving a call, and never exits?
-/bin/sh -c "true | fbcli $*" &
-child=$!
-wait
+start() {
+  # if in Do Not Disturb, don't do any feedback
+  # TODO: better solution is to actually make use of feedbackd profiles.
+  #       i.e. set profile to `quiet` when in DnD mode
+  if [ "$SWAYNC_URGENCY" != "Critical" ] && [ "$(swaync-client --get-dnd)" = "true" ]; then
+    exit
+  fi
+
+  trap cleanup SIGINT SIGQUIT SIGTERM
+
+  # feedbackd stops playback when the caller exits
+  # and fbcli will exit immediately if it has no stdin.
+  # so spoof a stdin.
+  # TODO: this maybe pegs CPU at 100% when receiving a call, and never exits?
+  /bin/sh -c "true | fbcli ${fbcliargs[*]}" &
+  child=$!
+  wait
+}
+
+stop() {
+  pkill -e -f "swaync-fbcli start ${fbcliargs[*]}"
+}
+
+case "$action" in
+  start)
+    start
+    ;;
+  stop)
+    stop
+    ;;
+esac