OpenZWave 0.5.2 (#1489)

* OpenZWave 0.5.2

* Fix typo in code comment

* LTW -> LWT

* Convert mosquitto.conf dos2unix

* Add additional MQTT bridge settings

* Change client name to match add-on slug

* Extract MQTT logic into a helper

* Disable shellcheck SC1091

zwave/rootfs/usr/lib/mqtt_helper.sh

@@ -0,0 +1,56 @@
+#!/usr/bin/with-contenv bashio
+# ==============================================================================
+# MQTT helpers for the zwave add-on.
+# ==============================================================================
+
+# ------------------------------------------------------------------------------
+# Ensure upstream MQTT server has the correct OZW status retained on shutdown.
+#
+# Arguments:
+#   $1 MQTT Server host
+#   $2 MQTT Server port
+#   $3 MQTT Server username
+#   $4 MQTT Server password
+#   $5 OZW Instance ID (optional)
+# ------------------------------------------------------------------------------
+function mqtt::ensure_ozw_offline_status() {
+    local host=${1}
+    local port=${2}
+    local username=${3}
+    local password=${4}
+    local ozw_instance=${5:-}
+    local ozw_status
+
+    bashio::log.trace "${FUNCNAME[0]}:" "$@"
+
+    if ! bashio::var.has_value "${ozw_instance}"; then
+        ozw_instance=1
+        if bashio::config.has_value 'instance'; then
+            ozw_instance=$(bashio::config 'instance')
+        fi
+    fi
+
+    ozw_status=$(\
+        mosquitto_sub \
+            --host "${host}" \
+            --port "${port}" \
+            --username "${username}" \
+            --pw "${password}" \
+            -C 1 \
+            -W 3 \
+            --retained-only \
+            --topic "OpenZWave/${ozw_instance}/status/" \
+    )
+    if bashio::var.has_value "${ozw_status}" \
+        && [[ $(bashio::jq "${ozw_status}" ".Status") != "Offline" ]];
+    then
+        mosquitto_pub \
+            --host "${host}" \
+            --port "${port}" \
+            --username "${username}" \
+            --pw "${password}" \
+            --retain \
+            --topic "OpenZWave/${ozw_instance}/status/" \
+            --message "$(bashio::var.json "Status" "Offline")"
+    fi
+}