From 6fbbb0c7b580ee041fe035d5f9d5ce1497366f32 Mon Sep 17 00:00:00 2001
From: Philipp Heckel <pheckel@datto.com>
Date: Sat, 4 Dec 2021 15:32:21 -0500
Subject: [PATCH] Properly handle systemd start/stop during Debian package
 install, closes #30

---
 .goreleaser.yml     |  2 ++
 scripts/postinst.sh | 19 +++++++++++++++++++
 scripts/postrm.sh   |  8 +++++---
 scripts/prerm.sh    | 12 ++++++++++++
 4 files changed, 38 insertions(+), 3 deletions(-)
 create mode 100755 scripts/postinst.sh
 create mode 100755 scripts/prerm.sh

diff --git a/.goreleaser.yml b/.goreleaser.yml
index 8a98d0a..ae217ee 100644
--- a/.goreleaser.yml
+++ b/.goreleaser.yml
@@ -53,6 +53,8 @@ nfpms:
       - src: config/ntfy.service
         dst: /lib/systemd/system/ntfy.service
     scripts:
+      postinstall: "scripts/postinst.sh"
+      preremove: "scripts/prerm.sh"
       postremove: "scripts/postrm.sh"
 archives:
   -
diff --git a/scripts/postinst.sh b/scripts/postinst.sh
new file mode 100755
index 0000000..0a09edb
--- /dev/null
+++ b/scripts/postinst.sh
@@ -0,0 +1,19 @@
+#!/bin/sh
+set -e
+
+# Restart systemd service if it was already running. Note that "deb-systemd-invoke try-restart" will
+# only act if the service is already running. If it's not running, it's a no-op.
+#
+# TODO: This is only tested on Debian.
+#
+if [ "$1" = "configure" ] && [ -d /run/systemd/system ]; then
+  systemctl --system daemon-reload >/dev/null || true
+  if systemctl is-active -q ntfy.service; then
+    echo "Restarting ntfy.service ..."
+    if [ -x /usr/bin/deb-systemd-invoke ]; then
+      deb-systemd-invoke try-restart ntfy.service >/dev/null || true
+    else
+      systemctl restart ntfy.service >/dev/null || true
+    fi
+  fi
+fi
diff --git a/scripts/postrm.sh b/scripts/postrm.sh
index 4588bc2..1eac8a7 100755
--- a/scripts/postrm.sh
+++ b/scripts/postrm.sh
@@ -1,6 +1,8 @@
 #!/bin/sh
-set -eu
-systemctl stop ntfy >/dev/null 2>&1 || true
+set -e
+
+# Delete the config if package is purged
 if [ "$1" = "purge" ]; then
-  rm -rf /etc/ntfy
+  echo "Deleting /etc/ntfy ..."
+  rm -rf /etc/ntfy || true
 fi
diff --git a/scripts/prerm.sh b/scripts/prerm.sh
new file mode 100755
index 0000000..f366855
--- /dev/null
+++ b/scripts/prerm.sh
@@ -0,0 +1,12 @@
+#!/bin/sh
+set -e
+
+# Stop systemd service
+if [ -d /run/systemd/system ] && [ "$1" = remove ]; then
+  echo "Stopping ntfy.service ..."
+  if [ -x /usr/bin/deb-systemd-invoke ]; then
+    deb-systemd-invoke stop 'ntfy.service' >/dev/null || true
+  else
+    systemctl stop ntfy >/dev/null 2>&1 || true
+  fi
+fi