#!/bin/sh

USERNAME="redismultiplexer"
GROUP="redismultiplexer"
APP="redismultiplexer"
CODENAME="redismultiplexer"
FOLDERS="/etc /run"
LOG=" /var/log"
ARCHS=""
ERROR=""

cat /etc/passwd | grep "${USERNAME}:" >/dev/null 2>&1
if [ $? -eq 0 ] ; then
    echo "User '${USERNAME}' already exists!"
else
    echo "Creating user '${USERNAME}'..."
    useradd --no-create-home -s /bin/false ${USERNAME}
    passwd -d ${USERNAME}
    passwd -l ${USERNAME}
fi

cat /etc/group | grep "${GROUP}:" >/dev/null 2>&1
if [ $? -eq 0 ] ; then
    echo "Group '${GROUP}' already exists!"
else
    echo "Creating group '${GROUP}'..."
    addgroup ${GROUP} >/dev/null
fi

for folder in $FOLDERS ; do
    if [ ! -e $FOLDER ] ; then
        echo -n "Setting up folder '${folder}' ... [mkdir"
        mkdir -p ${folder}/${APP} || exit 1
        echo -n ", chown:${USERNAME}"
        chown ${USERNAME} -R ${folder}/${APP} || exit 1
        echo -n ", chgrp:${GROUP}"
        chgrp ${GROUP} -R ${folder}/${APP} || exit 1
        echo -n ", chmod:770"
        chmod 770 ${folder}/${APP} || exit 1
        echo "] => done"
    fi
done

echo -n "Setting up log folder '${LOG}' ... [mkdir"
mkdir -p ${LOG}/${APP} || exit 1
echo -n ", chown:${USERNAME}"
chown ${USERNAME} -R ${LOG}/${APP} || exit 1
echo -n ", chrp:${GROUP}"
chgrp ${GROUP} -R ${LOG}/${APP} || exit 1
echo -n ", chmod:750"
chmod 750 ${LOG}/${APP} || exit 1
echo "] => done"

# General test
${APP} --version > /dev/null 2>&1 || ERROR="1"
if [ -z "$ERROR" ] ; then

    # Reload systemd
    echo -n "Reloading systemd..."
    systemctl daemon-reload || ERROR="1"
    if [ -z "$ERROR" ] ; then
        echo "done"

        # Make sure service is enabled
        echo -n "Enable $CODENAME..."
        systemctl enable $CODENAME || ERROR="1"
        if [ -z "$ERROR" ] ; then
            echo "done"

            # Restart service
            echo -n "Restarting $CODENAME..."
            systemctl restart $CODENAME || ERROR="1"
            if [ -z "$ERROR" ] ; then
                echo "done"
            fi
        fi
    fi

    if [ ! -z "$ERROR" ] ; then
        echo "ERROR"
    fi

else
    echo "ERROR: selftest has failed! (Binary was: ${APP})"
fi

# Return final status
if [ -z "$ERROR" ] ; then
    exit 0
else
    exit 1
fi