#!/bin/bash

PURPLE='\033[35m'
ORANGE='\033[33m'
BLUE='\033[34m'
BOLD='\033[1m'
RESET='\033[0m'

install_pkg() {
    pkg="$1"
    if ! command -v "$pkg" &> /dev/null; then
        apt install -y "$pkg"
        echo -e "${PURPLE}${BOLD}${pkg} installed${RESET}"
    fi
}

get_username() {
    if [[ -z "$username" ]]; then
        username=$(getent passwd 1000 | cut -d: -f1)
    fi
}

get_ip() {
    if [[ -z "$ip" ]]; then
        ip=$(hostname -I)
        if [[ "${ip: -1}" == " " ]]; then
            ip="${ip%?}"
        fi
    fi
}

echo -e "${PURPLE}${BOLD}Deployment Debian + Caddy + Directus + Nuxt${RESET}"

if [ "$EUID" -ne 0 ]; then
  echo "Please run as root"
  exit
fi

apt install -y php php-fpm
systemctl disable --now apache2

#
# USER
#
echo -e "${PURPLE}${BOLD}Create a user ? (y/N) ${RESET}"
read answer
if [[ "$answer" == "y" ]]; then
    echo -e "${PURPLE}${BOLD}Create user${RESET}"

    read -p "Enter username: " username

    if id "$username" &>/dev/null; then
        echo "User '$username' already exists."
        exit 1
    fi

    echo -e "${ORANGE}${BOLD}Generate and store the password somewhere safe${RESET}"
    read -s -p "Enter password: " password
    echo
    useradd -m "$username"
    chsh -s /bin/bash $username
    echo "$username:$password" | chpasswd

    usermod -aG sudo $username

    echo -e "${PURPLE}${BOLD}User '$username' created with password successfully.${RESET}"
fi

#
# SSH
#
echo -e "${PURPLE}${BOLD}Setup SSH ? (y/N) ${RESET}"
read answer
if [[ "$answer" == "y" ]]; then
    echo -e "${PURPLE}${BOLD}Setup SSH${RESET}"

    touch /etc/ssh/sshd_config.d/custom.conf
    echo "PermitRootLogin no" >> /etc/ssh/sshd_config.d/custom.conf
    echo "PermitEmptyPasswords no" >> /etc/ssh/sshd_config.d/custom.conf
    systemctl reload ssh
fi

#
# FIREWALL AND FAIL2BAN
#
echo -e "${PURPLE}${BOLD}Setup Firewall and Fail2ban ? (y/N) ${RESET}"
read answer
if [[ "$answer" == "y" ]]; then
    echo -e "${PURPLE}${BOLD}Setup Firewall and Fail2ban${RESET}"
    apt install -y ufw fail2ban
    systemctl enable fail2ban
    ufw allow ssh
    ufw allow http
    ufw allow https
fi

#
# CADDY
#
echo -e "${PURPLE}${BOLD}Install Caddy webserver ? (y/N) ${RESET}"
read answer
if [[ "$answer" == "y" ]]; then
    echo -e "${PURPLE}${BOLD}Install Caddy Webserver${RESET}"
    apt install -y debian-keyring debian-archive-keyring apt-transport-https curl
    curl -1sLf 'https://dl.cloudsmith.io/public/caddy/stable/gpg.key' | gpg --dearmor -o /usr/share/keyrings/caddy-stable-archive-keyring.gpg
    curl -1sLf 'https://dl.cloudsmith.io/public/caddy/stable/debian.deb.txt' | tee /etc/apt/sources.list.d/caddy-stable.list
    apt update
    apt install -y caddy
    > /etc/caddy/Caddyfile
fi

#
# MARIADB
#

echo -e "${PURPLE}${BOLD}Install MariaDB ? (y/N) ${RESET}"
read answer
if [[ "$answer" == "y" ]]; then
    apt install -y mariadb-server
    echo -e "${ORANGE}${BOLD}Generate and store the password somewhere safe${RESET}"
    echo -e "${PURPLE}${BOLD}Enter the MariaDB root password : ${RESET}"
    read -s db_root_password
    echo
    install_pkg expect
    SECURE_MYSQL=$(expect -c "
        set timeout 3
        spawn mysql_secure_installation
        expect \"Enter current password for root (enter for none):\"
        send \"\r\"
        expect \"Switch to unix_socket authentication \\[Y/n\\]\"
        send \"n\r\"
        expect \"Change the root password? \\[Y/n\\]\"
        send \"y\r\"
        expect \"New password:\"
        send \"$db_root_password\r\"
        expect \"Re-enter new password:\"
        send \"$db_root_password\r\"
        expect \"Remove anonymous users?\"
        send \"y\r\"
        expect \"Disallow root login remotely?\"
        send \"y\r\"
        expect \"Remove test database and access to it?\"
        send \"y\r\"
        expect \"Reload privilege tables now?\"
        send \"y\r\"
        expect eof
    ")
    echo "${SECURE_MYSQL}"
    # https://gist.github.com/coderua/5592d95970038944d099
fi

#
# DIRECTUS DB
#

echo -e "${PURPLE}${BOLD}Setup Directus database ? (y/N) ${RESET}"
read answer
if [[ "$answer" == "y" ]]; then
    echo -e "${ORANGE}${BOLD}Generate and store the password somewhere safe${RESET}"
    echo -e "${PURPLE}${BOLD}Enter the MariaDB Directus password : ${RESET}"
    read -s db_directus_password
    echo
    if [[ -z "$db_root_password" ]]; then
        echo -e "${PURPLE}${BOLD}Enter the MariaDB root password : ${RESET}"
        read -s db_root_password
        echo
    fi
    install_pkg expect
    CREATE_DIRECTUS_DB=$(expect -c "
        spawn mariadb -u root -p
        expect \"Enter password:\"
        send \"$db_root_password\r\"
        expect \"mysql>\"
        send \"CREATE USER 'directus'@'localhost' IDENTIFIED BY '${db_directus_password}';\r\"
        send \"CREATE DATABASE directus;\r\"
        send \"GRANT ALL PRIVILEGES ON directus.* TO 'directus'@'localhost' IDENTIFIED BY '${db_directus_password}';\r\"
        send \"FLUSH PRIVILEGES;\r\"
        expect \"mysql>\"
        send \"quit;\r\"
        expect eof
    ")
    echo "${CREATE_DIRECTUS_DB}" >& /dev/null
    echo -e "${PURPLE}${BOLD}Directus database created${RESET}"
fi

#
# NODE
#

echo -e "${PURPLE}${BOLD}Install Node ? (y/N) ${RESET}"
read answer
if [[ "$answer" == "y" ]]; then
    touch /var/www/.bashrc
    chown www-data:www-data /var/www/.bashrc
    mkdir /var/www/.nvm
    chown www-data:www-data /var/www/.nvm
    mkdir /var/www/.npm
    chown www-data:www-data /var/www/.npm 

    su -s /bin/bash -c 'curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.7/install.sh | bash &&\
    export NVM_DIR="$HOME/.nvm" &&\
    [ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh" &&\
    [ -s "$NVM_DIR/bash_completion" ] && \. "$NVM_DIR/bash_completion" &&\
    nvm install v18' www-data 
    ln -sf /var/www/.nvm/versions/node/v18.19.1/bin/node /usr/bin/node
    ln -sf /var/www/.nvm/versions/node/v18.19.1/bin/npm /usr/bin/npm
    ln -sf /var/www/.nvm/versions/node/v18.19.1/bin/npx /usr/bin/npx

    echo -e "${PURPLE}${BOLD}Node installed${RESET}";
fi

#
# SET THE URL
#

echo -e "${PURPLE}${BOLD}Enter the domain name of the website${RESET}"
read domain_name
get_ip

echo -e "${PURPLE}${BOLD}Configure the ${domain_name} DNS ZONE as the following${RESET}"
echo -e "${BLUE}Domain : ${domain_name} | Type : A | Target : ${ip}${RESET}"
echo -e "${BLUE}Domain : cms.${domain_name} | Type : A | Target : ${ip}${RESET}"
echo -e "${BLUE}Domain : www.${domain_name} | Type : A | Target : ${ip}${RESET}"
echo -e "${PURPLE}${BOLD}Press any key when done${RESET}"
read

repo_directory="/var/www/repositories"
mkdir $repo_directory
chown www-data:www-data $repo_directory
cms_directory="${repo_directory}/cms_${domain_name}"

#
# DIRECTUS
#

echo -e "${PURPLE}${BOLD}Install Directus ? (y/N) ${RESET}"
read answer
if [[ "$answer" == "y" ]]; then
    install_pkg tmux

    if [[ -z "$db_directus_password" ]]; then
        echo -e "${PURPLE}${BOLD}Enter the MariaDB Directus password : ${RESET}"
        read -s db_directus_password
        echo
    fi

    echo -e "${ORANGE}${BOLD}Generate and store the credentials somewhere safe${RESET}"
    echo -e "${PURPLE}${BOLD}Enter the Directus admin email : ${RESET}"
    read directus_admin_email
    echo -e "${PURPLE}${BOLD}Enter the Directus admin password : ${RESET}"
    read -s directus_admin_password

    env_file="${cms_directory}/.env"
    port=8055

    key=$(head -c 16 /dev/urandom | od -An -tx1 | tr -d ' \n')
    secret=$(head -c 16 /dev/urandom | od -An -tx1 | tr -d ' \n')

    echo "set -g default-shell /bin/sh" >> /etc/tmux.conf

    su -s /bin/bash -c "mkdir ${cms_directory} &&\
    mkdir ${cms_directory}/uploads &&\
    echo \"HOST='${ip}'\" >> ${env_file} &&\
    echo \"PORT=${port}\" >> ${env_file} &&\
    echo \"PUBLIC_URL='https://cms.${domain_name}'\" >> ${env_file} &&\
    echo \"DB_CLIENT='mysql'\" >> ${env_file} &&\
    echo \"DB_HOST='127.0.0.1'\" >> ${env_file} &&\
    echo \"DB_PORT='3306'\" >> ${env_file} &&\
    echo \"DB_DATABASE='directus'\" >> ${env_file} &&\
    echo \"DB_USER='directus'\" >> ${env_file} &&\
    echo \"DB_PASSWORD='${db_directus_password}'\" >> ${env_file} &&\
    echo \"SECRET='${secret}'\" >> ${env_file} &&\
    echo \"KEY='${key}'\" >> ${env_file} &&\
    echo \"CORS_ENABLED='true'\" >> ${env_file} &&\
    echo \"CORS_ORIGIN='true'\" >> ${env_file} &&\
    cd ${cms_directory} &&\
    npm init -y &&\
    npx directus bootstrap --skipAdminInit &&\
    tmux new-session -d -s directus &&\
    tmux send-keys -t directus \"cd ${cms_directory} && npx directus start\" C-m &&\
    npx directus roles create --role Administrator --admin true &&\
    npx directus roles create --role Website &&\
    npx directus roles create --role User" www-data

    admin_role_uuid=$(echo $(mariadb -u directus -p${db_directus_password} \
    -e "SELECT id FROM directus.directus_roles WHERE name='Administrator'") | awk '{print $2}')
    website_role_uuid=$(echo $(mariadb -u directus -p${db_directus_password} \
    -e "SELECT id FROM directus.directus_roles WHERE name='Website'") | awk '{print $2}')
    user_role_uuid=$(echo $(mariadb -u directus -p${db_directus_password} \
    -e "SELECT id FROM directus.directus_roles WHERE name='User'") | awk '{print $2}')
    
    website_password=$(head -c 16 /dev/urandom | od -An -tx1 | tr -d ' \n')

    su -s /bin/bash -c "cd ${cms_directory} &&\
    npx directus users create --email \"${directus_admin_email}\" \
    --password \"${directus_admin_password}\" --role \"${admin_role_uuid}\" &&\
    npx directus users create --email \"website@${domain_name}\" --password \"${website_password}\" --role \"${website_role_uuid}\"" www-data

    website_token=$(head -c 16 /dev/urandom | od -An -tx1 | tr -d ' \n')
    mariadb -u directus -p${db_directus_password} -e "UPDATE directus.directus_roles SET icon='robot' WHERE name='Website'";
    mariadb -u directus -p${db_directus_password} -e "UPDATE directus.directus_roles SET app_access='0' WHERE name='Website'";
    mariadb -u directus -p${db_directus_password} -e "UPDATE directus.directus_users SET token=\"${website_token}\" WHERE email=\"website@${domain_name}\"";

    caddyfile="/etc/caddy/Caddyfile"
    echo "cms.${domain_name} {" >> $caddyfile
    echo "reverse_proxy ${ip}:${port}" >> $caddyfile
    echo "}" >> $caddyfile
    caddy fmt $caddyfile -w
    caddy reload -c $caddyfile

    echo -e "${PURPLE}${BOLD}Import Directus data model ? (y/N) ${RESET}"
    read answer
    if [[ "$answer" == "y" ]]; then
        get_username

        echo -e "${PURPLE}${BOLD}Import local Directus data model${RESET}"
        echo -e "${BLUE}npx directus schema snapshot ./snapshot.yaml${RESET}"
        echo -e "${BLUE}scp /local/path/to/snapshot.yaml ${username}@${ip}:/home/${username}/snapshot.yaml${RESET}"
        echo -e "${PURPLE}${BOLD}Press any key when done${RESET}"
        read

        su -s /bin/bash -c "cd ${cms_directory} &&\
        npx directus schema apply --yes /home/${username}/snapshot.yaml" www-data

        echo -e "${PURPLE}${BOLD}You can now add some content${RESET}"
        echo -e "${ORANGE}${BOLD}Do not forget to set the permissions${RESET}"
        echo -e "${ORANGE}${BOLD}Website role ${RESET}${ORANGE}Read content collections and directus_files${RESET}"
        echo -e "${ORANGE}${BOLD}User role ${RESET}${ORANGE}All permissions on content collections and directus_files${RESET}"
    fi

    echo -e "${PURPLE}${BOLD}Access Directus ${RESET}${PURPLE}https://cms.${domain_name}${RESET}"
fi

#
# NUXT
#
echo -e "${PURPLE}${BOLD}Install the front-end ? (y/N) ${RESET}"
read answer
if [[ "$answer" == "y" ]]; then
    get_ip

    echo -e "${PURPLE}${BOLD}Create and push a prod branch on the repo${RESET}"
    echo -e "${BLUE}git checkout -b prod${RESET}"
    echo -e "${BLUE}git add . && git commit -m "first commit to prod"${RESET}"
    echo -e "${BLUE}git push origin prod${RESET}"
    echo -e "${PURPLE}${BOLD}Enter the .git url of the repo${RESET}"
    read repo_url

    front_repo_name=$(echo "$repo_url" | sed 's#.*/\([^/]*\)\.git#\1#')
    front_directory="${repo_directory}/${front_repo_name}"
    if [[ -z "$website_token" ]]; then
        echo -e "${PURPLE}${BOLD}Enter the Directus Website user static token${RESET}"
        read -s website_token
    fi

    touch /var/www/.nuxtrc
    echo "telemetry.consent=0" > /var/www/.nuxtrc
    echo "telemetry.enabled=false" >> /var/www/.nuxtrc
    chown -R www-data:www-data /var/www/.nuxtrc

    su -s /bin/bash -c "cd ${repo_directory} &&\
    git clone ${repo_url} &&\
    cd ${front_directory} &&\
    git checkout prod &&\
    echo \"DIRECTUS_API_TOKEN=${website_token}\" > .env &&\
    echo \"URL=https://${domain_name}\" >> .env &&\
    echo \"DIRECTUS_URL=https://cms.${domain_name}\" >> .env &&\
    tmux send-keys -t directus C-c &&\
    npm install -y &&\
    NUXT_TELEMETRY_DISABLED=1 bash -c \"npm run build\" &&\
    tmux new-session -d -s front &&\
    tmux send-keys -t front \"cd ${front_directory} && node .output/server/index.mjs\" C-m &&\
    tmux send-keys -t directus \"npx directus start\" C-m" www-data

    caddyfile="/etc/caddy/Caddyfile"
    echo "www.${domain_name} {" >> $caddyfile
    echo "redir ${domain_name}{uri} permanent" >> $caddyfile
    echo "}" >> $caddyfile
    echo "${domain_name} {" >> $caddyfile
    echo "reverse_proxy ${ip}:3000" >> $caddyfile
    echo "}" >> $caddyfile
    caddy fmt $caddyfile -w
    caddy reload -c $caddyfile

    echo -e "${PURPLE}${BOLD}Setup a webhook ? (y/N) ${RESET}"
    read answer
    if [[ "$answer" == "y" ]]; then
        echo -e "${PURPLE}${BOLD}If it does not already exists, create a webhook at the following url${RESET}"
        echo -e "${PURPLE}${BOLD}${repo_url}/settings/hooks/gitea/new${RESET}"
        echo -e "${BLUE}${BOLD}Target URL ${RESET}${BLUE}https://${domain_name}/webhook.php${RESET}"
        echo -e "${BLUE}${BOLD}Branch filter ${RESET}${BLUE}prod${RESET}"
        echo -e "${BLUE}${BOLD}Authorization Header ${RESET}${ORANGE}Generate a safe string using \`openssl rand -base64 32\`${RESET}"
        echo -e "${PURPLE}${BOLD}Enter the Authorization Header${RESET}"
        read -s auth_header

        rm /var/www/html/index.html
        cp ./assets/webhook.php /var/www/html/
        mkdir /var/www/webhook
        cp ./assets/webhook.sh /var/www/webhook
        chown www-data:www-data /var/www/webhook/webhook.sh
        chmod u+x /var/www/webhook/webhook.sh

        head -n $(($(wc -l < $caddyfile) - 2)) $caddyfile > temp_Caddyfile && mv temp_Caddyfile $caddyfile
        echo "handle /webhook.php {" >> $caddyfile
        echo "@unauthorized not header Authorization \"${auth_header}\"" >> $caddyfile
        echo "respond @unauthorized \"Unauthorized access\"" >> $caddyfile
        echo "root * /var/www/html" >> $caddyfile
        echo "php_fastcgi unix//run/php/php8.2-fpm.sock" >> $caddyfile
        echo "file_server" >> $caddyfile
        echo "}" >> $caddyfile
        echo "handle {" >> $caddyfile
        echo "reverse_proxy ${ip}:3000" >> $caddyfile
        echo "}" >> $caddyfile
        echo "}" >> $caddyfile
        caddy fmt $caddyfile -w
        caddy reload -c $caddyfile
    fi
fi

apt purge expect

# TODO
#
# ZABBIX
# URBACKUP
# DIRECTUS EMAIL
# DIRECTUS REDIS
# LOGING DE TOUT
# IMPORT DIRECTUS FULL DB
# CADDYFILE EN JSON
# MÀJ
# reboot a running system