#!/bin/bash
# {{ ansible_managed }}

set -eu

LSTU_PATH={{ lstu.path }}
INSTALLED_VERSION=$(cd $LSTU_PATH && git for-each-ref --sort=-taggerdate --count=1 --format '%(tag)' refs/tags)
LATEST_VERSION=$(curl -s {{ lstu_api_url }} | jq '.[]' | jq -r '.name' | head -1)
LSTU_CONF_TEMPLATE={{ lstu.path }}/lstu.conf.template

if [ "$INSTALLED_VERSION" == "$LATEST_VERSION" ]; then
    echo "Lstu ist bereits aktuell."
    exit 0
else
    echo "Deaktiviere Monitoring..."
    monit unmonitor {{ lstu_monit_name }}

    echo "Stoppe Dienst..."
    systemctl stop {{ lstu_service }}

    echo "Aktualisiere Git-Repository..."
    cd "$LSTU_PATH"
    git pull
    git checkout tags/"$LATEST_VERSION"

    echo "Starte Dienst..."
    systemctl start {{ lstu_service }}
    sleep 10

    echo "Aktiviere Monitoring..."
    monit monitor {{ lstu_monit_name }}
    sleep 10
    monit status {{ lstu_monit_name }}

    if [ "$(md5sum $LSTU_CONF_TEMPLATE)" == "$(cat $LSTU_CONF_TEMPLATE.md5)" ]; then
        echo "Keine Aenderungen am Konfigurationstemplate"
    else
       echo "Es gibt Aenderungen an der lstu.conf.template." | mail -s "Lstu-Update: Nacharbeiten notwendig" lstu@admin.systemausfall.org
    fi
    md5sum "$LSTU_CONF_TEMPLATE" > "$LSTU_CONF_TEMPLATE".md5
fi