1 files changed, 25 insertions, 0 deletions
diff --git a/krebs/5pkgs/simple/Reaktor/scripts/tell-on_join.sh b/krebs/5pkgs/simple/Reaktor/scripts/tell-on_join.sh
new file mode 100755
index 000000000..c21dc8776
--- /dev/null
+++ b/krebs/5pkgs/simple/Reaktor/scripts/tell-on_join.sh
@@ -0,0 +1,25 @@
+#! /bin/sh
+set -euf
+
+# require flock from util-linux (pkgs.utillinux)
+if test "${FLOCK-}" != "$state_file"; then
+  exec env FLOCK="$state_file" flock "$state_file" "$0" "$@"
+fi
+
+# TODO tell now, if already joined
+jq -r <"$state_file" \
+    --arg to "$_from" \
+    --arg msgtarget "$_msgtarget" \
+    '
+      select(.to == $to and .msgtarget == $msgtarget) |
+      "\(.to): \(.text) \u00032-- \(.from)\u00032 \(.date)"
+    '
+
+jq -c <"$state_file" >"$state_file.tmp" \
+    --arg to "$_from" \
+    --arg msgtarget "$_msgtarget" \
+    '
+      select((.to == $to and .msgtarget == $msgtarget) | not)
+    '
+
+mv "$state_file.tmp" "$state_file"