Paperless-ngx update script

paperless_update.sh

#!/bin/bash

function header_info {
        clear
        cat <<"EOF"
    ____                        __                                     
   / __ \____ _____  ___  _____/ /__  __________    ____  ____ __  __
  / /_/ / __ `/ __ \/ _ \/ ___/ / _ \/ ___/ ___/___/ __ \/ __ `/ |/_/
 / ____/ /_/ / /_/ /  __/ /  / /  __(__  |__  )___/ / / / /_/ />  <  
/_/    \__,_/ .___/\___/_/  /_/\___/____/____/   /_/ /_/\__, /_/|_|  
           /_/                                         /____/        
 
EOF
}

function catch_errors() {
	  set -Eeuo pipefail
	  trap 'error_handler $LINENO "$BASH_COMMAND"' ERR
}

function error_handler() {
        local exit_code="$?"
        local line_number="$1"
        local command="$2"
        local error_message="${RD}[ERROR]${CL} in line ${RD}$line_number${CL}: exit code ${RD}$exit_code${CL}: while executing command ${YW}$command${CL}"
        echo -e "\n$error_message\n"
}

function exit-script() {
        clear
        echo -e "⚠  User exited script \n"
        exit
}

function color() {
        YW=$(echo "\033[33m")
        BL=$(echo "\033[36m")
        RD=$(echo "\033[01;31m")
        BGN=$(echo "\033[4;92m")
        GN=$(echo "\033[1;92m")
        DGN=$(echo "\033[32m")
        CL=$(echo "\033[m")
        CM="${GN}✓${CL}"
        CROSS="${RD}✗${CL}"
        BFR="\\r\\033[K"
        HOLD="-"
}

function msg_info() {
        local msg="$1"
        echo -ne " ${HOLD} ${YW}${msg}..."
}

function msg_ok() {
        local msg="$1"
        echo -e "${BFR} ${CM} ${GN}${msg}${CL}"
}

function msg_error() {
        local msg="$1"
        echo -e "${BFR} ${CROSS} ${RD}${msg}${CL}"
}

function update_script() {
        if [[ ! -d /opt/paperless-ngx ]]; then
                msg_error "No ${APP} Installation Found!"
                exit
  	fi

        RELEASE=$(curl -s https://api.github.com/repos/paperless-ngx/paperless-ngx/releases/latest | grep "tag_name" | awk '{print substr($2, 2, length($2)-3) }')

        if (whiptail --title "SUPPORT" --yesno "Update Paperless to ${RELEASE}?" 11 58); then
                header_info

                msg_info "Stopping Paperless-ngx"
                systemctl stop paperless-consumer paperless-webserver paperless-scheduler paperless-task-queue
                sleep 1
                msg_ok "Stopped Paperless-ngx"

                msg_info "Updating to ${RELEASE}"
                cd /opt
                wget https://github.com/paperless-ngx/paperless-ngx/releases/download/$RELEASE/paperless-ngx-$RELEASE.tar.xz &>/dev/null
                tar -xf paperless-ngx-$RELEASE.tar.xz &>/dev/null
                chown -R paperless:paperless paperless-ngx
                cd paperless-ngx
                rm paperless.conf
                sudo -u paperless pip install -r requirements.txt &>/dev/null
                cd src
                sudo -u paperless python3 manage.py migrate &>/dev/null
                msg_ok "Updated to ${RELEASE}"

                msg_info "Cleaning up"
                cd /opt
                rm paperless-ngx-$RELEASE.tar.xz
                sleep 1
                msg_ok "Cleaned"

                msg_info "Starting Paperless-ngx"
                cd /
                systemctl start paperless-consumer paperless-webserver paperless-scheduler paperless-task-queue
                sleep 1
                msg_ok "Started Paperless-ngx"

                msg_ok "Updated Successfully!\n"
                exit
        else
                exit-script
        fi
}

color
catch_errors
echo -e "Loading..."
APP="Paperless-ngx"
update_script

Script assumes that install location is /opt/papeless-ngx, executing user is paperless and config file sits in /etc/paperless.conf