# GRAVITY SYNC BY VMSTAN #####################
# gs-automate.sh #############################

# For documentation or downloading updates visit https://github.com/vmstan/gravity-sync
# This code is called from the main gravity-sync.sh file and should not execute directly!

## Automate Task
function task_automate {
    TASKTYPE='AUTOMATE'
    MESSAGE="${MESSAGE}: ${TASKTYPE}"
    echo_good
    
    CRON_EXIST='0'
    CRON_CHECK=$(crontab -l | grep -q "${GS_FILENAME}"  && echo '1' || echo '0')
    if [ ${CRON_CHECK} == 1 ]
    then
        MESSAGE="${UI_AUTO_CRON_EXISTS}"
        echo_warn
        clear_cron
    fi

    MESSAGE="Customizing service file username"
    sed -i "/User=unknown/c\User=$USER" ${LOCAL_FOLDR}/templates/gravity-sync.service
    error_validate

    MESSAGE="Customizing service file executable"
    sed -i "/ExecStart=/c\ExecStart=${LOCAL_FOLDR}/${GS_FILENAME}" ${LOCAL_FOLDR}/templates/gravity-sync.service
    error_validate

    if systemctl is-active --quiet gravity-sync
    then
        MESSAGE="Stopping existing systemd service"
        sudo systemctl stop gravity-sync
        error_validate
    fi

    MESSAGE="Moving systemd timer into place"
    sudo cp ${LOCAL_FOLDR}/templates/gravity-sync.timer ${DAEMON_PATH}
    error_validate

    MESSAGE="Moving systemd service into place"
    sudo cp ${LOCAL_FOLDR}/templates/gravity-sync.service ${DAEMON_PATH}
    error_validate

    MESSAGE="Reloading systemd daemon"
    sudo systemctl daemon-reload --quiet
    error_validate

    MESSAGE="Enabling Gravity Sync timer"
    sudo systemctl enable gravity-sync.timer --quiet
    error_validate

    MESSAGE="Starting Gravity Sync service"
    sudo systemctl start gravity-sync --quiet
    error_validate
    
    exit_withchange
}

function task_autocron {
    TASKTYPE='AUTOCRON'
    MESSAGE="${MESSAGE}: ${TASKTYPE}"
    echo_good

    MESSAGE="Crontab automation is deprecated and will be removed in a future release"
    echo_warn
    
    CRON_EXIST='0'
    CRON_CHECK=$(crontab -l | grep -q "${GS_FILENAME}"  && echo '1' || echo '0')
    if [ ${CRON_CHECK} == 1 ]
    then
        MESSAGE="${UI_AUTO_CRON_EXISTS}"
        echo_warn
        CRON_EXIST='1'
    fi
    
    MESSAGE="${UI_AUTO_CRON_DISPLAY_FREQ}"
    echo_info
    
    if [[ $1 =~ ^[0-9][0-9]?$ ]]
    then
        INPUT_AUTO_FREQ=$1
    else
        MESSAGE="${UI_AUTO_CRON_SELECT_FREQ}"
        echo_need
        read INPUT_AUTO_FREQ
        INPUT_AUTO_FREQ="${INPUT_AUTO_FREQ:-15}"
    fi
    
    if [ $INPUT_AUTO_FREQ == 5 ] || [ $INPUT_AUTO_FREQ == 10 ] || [ $INPUT_AUTO_FREQ == 15 ] || [ $INPUT_AUTO_FREQ == 30 ]
    then
        if [ $CRON_EXIST == 1 ]
        then
            clear_cron
        fi

        path_fix
        
        MESSAGE="${UI_AUTO_CRON_SAVING}"
        echo_stat
        (crontab -l 2>/dev/null; echo "*/${INPUT_AUTO_FREQ} * * * * ${BASH_PATH} ${LOCAL_FOLDR}/${GS_FILENAME} smart > ${LOG_PATH}/${CRONJOB_LOG}") | crontab -
        error_validate
    elif [ $INPUT_AUTO_FREQ == 0 ]
    then
        if [ $CRON_EXIST == 1 ]
        then
            clear_cron
        else
            MESSAGE="${UI_AUTO_CRON_DISABLED}"
            echo_warn
        fi
    else
        MESSAGE="${UI_INVALID_SELECTION}"
        echo_fail
        exit_nochange
    fi
    
    exit_withchange
}

## Clear Existing Automation Settings
function clear_cron {
    MESSAGE="${UI_AUTO_CRON_DISABLED}"
    echo_stat
    
    crontab -l > cronjob-old.tmp
    sed "/${GS_FILENAME}/d" cronjob-old.tmp > cronjob-new.tmp
    crontab cronjob-new.tmp 2>/dev/null
    error_validate
    rm cronjob-old.tmp
    rm cronjob-new.tmp
}

## Cron Task
function task_cron {
    TASKTYPE='CRON'
    MESSAGE="${MESSAGE}: ${TASKTYPE}"
    echo_good
    
    show_crontab
}

function path_fix {
    MESSAGE="Adding user path to Crontab"
    echo_stat
    (crontab -l 2>/dev/null; echo "PATH=$PATH") | crontab -
    error_validate
}