#!/bin/sh

# Exit at first error
set -e

CONFIG_DIR=/srv/collectd/config
TEMPLATES_DIR="/srv/collectd/templates"

mkdir -p "${CONFIG_DIR}"

echo "Generating '/srv/collectd/templates/collectd.conf.template'..."

cat "${TEMPLATES_DIR}/collectd.conf.template.base.part" > \
    "${TEMPLATES_DIR}/collectd.conf.template"

if [ "${P_NETWORK_ENABLED}" = "true" ]; then
    cat "${TEMPLATES_DIR}/collectd.plugin.network.part" >> \
        "${TEMPLATES_DIR}/collectd.conf.template"
fi

if [ "${P_PYTHON_ENABLED}" = "true" ]; then
    cat "${TEMPLATES_DIR}/collectd.plugin.python.start.part" >> \
        "${TEMPLATES_DIR}/collectd.conf.template"

    if [ "${P_PYTHON_FRITZ_ENABLED}" = "true" ]; then
        cat "${TEMPLATES_DIR}/collectd.plugin.python.fritz.part" >> \
            "${TEMPLATES_DIR}/collectd.conf.template"
    fi

    cat "${TEMPLATES_DIR}/collectd.plugin.python.end.part" >> \
        "${TEMPLATES_DIR}/collectd.conf.template"
fi

if [ "${P_WGRAPHITE_ENABLED}" = "true" ]; then
    cat "${TEMPLATES_DIR}/collectd.plugin.write_graphite.part" >> \
        "${TEMPLATES_DIR}/collectd.conf.template"
fi

# Fill the varibles in collectd.conf.template and put the result in collectd.conf
echo "Generating '${CONFIG_DIR}/collectd.conf'..."
envsubst < /srv/collectd/templates/collectd.conf.template > \
           "${CONFIG_DIR}/collectd.conf"
echo "Starting collectd..."
collectd -C "${CONFIG_DIR}/collectd.conf" -f