From fe8cb1896a9c6f46a860bf26431bedcaa06ec3c4 Mon Sep 17 00:00:00 2001
From: Marco Trevisan <mail@3v1n0.net>
Date: Sun, 11 Jun 2023 21:34:55 +0200
Subject: [PATCH] postinst: Do not override hassio.json data if already set

On upgrades, if $DATA_SHARE Is not provided we may end up overwriting
the user configuration, especially in case the postinst script is triggered as
part of dpkg configure because of previous failures (as it may happen in
recent systemd-journal-remote failures).

To prevent this, read the user value if set and re-use it unless a new one is
provided.
---
 homeassistant-supervised/DEBIAN/postinst | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/homeassistant-supervised/DEBIAN/postinst b/homeassistant-supervised/DEBIAN/postinst
index 414e8b2..6d6019b 100755
--- a/homeassistant-supervised/DEBIAN/postinst
+++ b/homeassistant-supervised/DEBIAN/postinst
@@ -106,8 +106,13 @@ case ${ARCH} in
 esac
 PREFIX=${PREFIX:-/usr}
 SYSCONFDIR=${SYSCONFDIR:-/etc}
-DATA_SHARE=${DATA_SHARE:-$PREFIX/share/hassio}
 CONFIG="${SYSCONFDIR}/hassio.json"
+
+if [ -z "$DATA_SHARE" ] && [ -e "$CONFIG" ]; then
+    DATA_SHARE=$(jq -e -r '.data' "${CONFIG}" || true)
+fi
+
+DATA_SHARE=${DATA_SHARE:-$PREFIX/share/hassio}
 cat > "${CONFIG}" <<- EOF
 {
     "supervisor": "${HASSIO_DOCKER}",