setup-server.sh

function update_sys {
    echo 'updating...'
    sudo apt update
    sudo apt upgrade -y
}

function install_nginx {
    echo 'installing nginx'
    sudo apt install nginx-full -y
    sudo mv /etc/nginx/sites-enabled/default /etc/nginx/sites-enabled/default.bak
    sudo nginx -s reload
}

function configure_firewall {
    echo 'Configuring firewall...'
    sudo apt install ufw -y
    sudo ufw allow ssh
    sudo ufw allow 'Nginx Full'
    sudo ufw enable
}

function add_nginx_conf {
    site_name=$1
    p=$2
    c=$3
    port="${p:-3000}"
    conf_name="${c:-$1.conf}"
    path="/etc/nginx/conf.d/$conf_name"
    echo $site_name $port $conf_name $path
    echo "server {
    server_name  $site_name  www.$site_name;
    # server_name  video.bizup.app;
    location / {
        proxy_pass      http://127.0.0.1:$port;
    }
}" | sudo tee $path
}

function install_certbot {
    echo 'install certbot'
    sudo snap install core
    sudo snap refresh core
    sudo snap install --classic certbot
    sudo ln -s /snap/bin/certbot /usr/bin/certbot
    sudo certbot --nginx
}

function install_node {
    echo 'installing NodeJs...'
    curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.1/install.sh | bash

    export NVM_DIR="$([ -z "${XDG_CONFIG_HOME-}" ] && printf %s "${HOME}/.nvm" || printf %s "${XDG_CONFIG_HOME}/nvm")"
    [ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh" # This loads nvm

    source ~/.bashrc
    nvm install --lts

    echo 'install yarn'
    npm i yarn -g
}

function install_pm2 {
    echo 'install and configuring pm2'
    npm install -g pm2
    pm2 install pm2-logrotate
    pm2 set pm2-logrotate:max_size 100M
}

function install_git {
    echo 'install git'
    sudo apt install git
    git config --global credential.helper store
}

function clone_repo {
    echo 'Cloning Git repository...'
    repo_url=$1
    repo_name=$(basename $repo_url .git)
    if [ -d "$repo_name" ]; then
        echo "Repository $repo_name already exists. Skipping cloning."
    else
        git clone $repo_url
    fi
}

function install_dependencies {
    echo 'Installing dependencies...'
    repo_name=$1
    cd $repo_name
    yarn install
}
# ensure permissions or do sudo before
function renew_cert {
    echo "0 12 * * * /usr/bin/certbot renew --quiet" >> /var/spool/cron/root
}


function install_mysql {
    echo 'Installing MySQL...'
    sudo apt install mysql-server -y
}

function configure_mysql {
    echo 'Configuring MySQL...'
    mysql_root_password=$1
    sudo mysql <<EOF
ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY '$mysql_root_password';
EOF
}


# update_sys
# install_node
# install_pm2
# install_git

# install_nginx
# add_nginx_conf
# install_certbot

It is tested code.