swaync-service-dispatcher: fix start/stop inversion

hosts/common/programs/swaynotificationcenter/swaync-service-dispatcher

@@ -1,10 +1,20 @@
 #!/usr/bin/env nix-shell
 #!nix-shell -i bash -p s6 -p s6-rc -p systemd
 
+# for default $PATH to take precedence over nix-shell PATH if invoked interactively,
+# otherwise we invoke a s6-rc which does not know where to find files.
+export PATH="/etc/profiles/per-user/$(whoami)/bin:/run/current-system/sw/bin:$PATH"
+
 action="$1"
 type="$2"
 service="$3"
 
+log() {
+  if [ -n "$SWAYNC_SERVICES_DEBUG" ]; then
+    printf "%s\n" "$1"
+  fi
+}
+
 checkActive() {
   case "$type" in
     systemd)
@@ -16,6 +26,7 @@ checkActive() {
   esac
 }
 startService() {
+  log "startService: $service"
   case "$type" in
     systemd)
       /run/wrappers/bin/sudo systemctl start "$service"
@@ -26,6 +37,7 @@ startService() {
   esac
 }
 stopService() {
+  log "stopService: $service"
   case "$type" in
     systemd)
       /run/wrappers/bin/sudo systemctl stop "$service"
@@ -43,10 +55,10 @@ case "$action" in
   toggle)
     case "$(checkActive)" in
       false)
-        stopService
+        startService
         ;;
       true)
-        startService
+        stopService
         ;;
     esac
     ;;