#!/bin/bash

# This will install everything required to run a basic FreeScout installation.
# This should be run on a clean Ubuntu server.

install_path='/var/www/html'

sudo apt-get -y -q install net-tools

server_ip=`ifconfig | grep -Eo 'inet (addr:)?([0-9]*\.){3}[0-9]*' | grep -Eo '([0-9]*\.){3}[0-9]*' | grep -v '127.0.0.1' | head -n 1`

printf "
########################################
## FreeScout Interactive Installation ##
########################################

Installation script will do the following:
- Install Nginx
- Install MySQL 5
- Install latest available version of PHP
- Install the latest version of the FreeScout
- Configure HTTPS (if needed)
- Set up a cron task

Make sure you have a domain name pointed to your server IP: $server_ip

You will be able to specify help desk domain name and choose installation directory.

Would you like to start installation? (Y/n) [n]:";
read confirm_start;
if [ "$confirm_start" != "Y" ]; then
    exit;
fi

#
# Domain
# 
printf "\nEnter help desk domain name (without 'www'): "
read domain_name;
if [ -z "$domain_name" ]; then
    echo "Domain name is required. Terminating installation"
    exit;
fi

mysql_pass=`(date +%s; head -c 10 /dev/urandom;)  | sha256sum | base64 | head -c 9 ; echo`

is_debian=`cat /etc/issue | grep -E ^Debian | wc -l`

#
# Dependencies
#
echo "Installing dependencies..."
sudo apt update
export DEBIAN_FRONTEND=noninteractive

sudo apt remove apache2 -y
sudo apt -q install git nginx 
if [ "$is_debian" = '1' ]; then
    # Debian
    sudo apt -q install mariadb-server mariadb-client
else
    # Ubuntu
    sudo apt -q install mysql-server libmysqlclient-dev
fi
sudo apt -q install php-fpm php php-mysqli php-mbstring php-xml php-imap php-zip php-gd php-curl php-intl
# json extension may be already included in php-fpm
sudo apt -y -q install php-json

php_version=`php -v | head -n 1 | cut -d " " -f 2 | cut -f1-2 -d"."`

#
# MySQL
#
echo "Configuring MySQL..."
echo 'DROP DATABASE IF EXISTS `freescout`;' | mysql -u root
echo 'CREATE DATABASE `freescout` CHARSET utf8mb4 COLLATE utf8mb4_unicode_ci;' | mysql -u root
echo 'DROP USER `freescout`@`localhost`;' | mysql -u root
echo 'REVOKE ALL PRIVILEGES, GRANT OPTION FROM `freescout`@`localhost`;' | mysql -u root
echo 'GRANT ALL PRIVILEGES ON `freescout`.* TO `freescout`@`localhost` IDENTIFIED BY "'"$mysql_pass"'";' | mysql -u root
# new syntax 
echo 'CREATE USER `freescout`@`localhost` IDENTIFIED BY "'"$mysql_pass"'";' | mysql -u root
echo 'GRANT ALL ON `freescout`.* TO `freescout`@`localhost`;' | mysql -u root
echo "You may see a MySQL privileges error above. Don't worry - the script executes two different commands for different DB versions and one of them always fails - just continue the installation."

#
# Application Setup
#
printf "\nWhere would you like to install FreeScout? [$install_path]:"
read confirm_path;
if [ $confirm_path = "Y" ]; then
    confirm_path=$install_path;
fi    
if [ ! -z "$confirm_path" ]; then
    install_path=`echo $confirm_path | sed 's:/*$::'`;
fi


if [ -f "$install_path" ]; then
    echo "$install_path is not a directory. Terminating installation"
    exit;
fi

if [ -d "$install_path" ]; then
    install_path_check=`sudo ls -1qA $install_path`

    if [ ! -z "$install_path_check" ]; then
        printf "All files in $install_path will be removed. Continue? (Y/n) [n]:"
        read confirm_clean;
        if [ $confirm_clean != "Y" ]; then
            exit;
        fi
        sudo rm -rf $install_path
    fi
fi

sudo mkdir -p $install_path
sudo chown www-data:www-data $install_path
sudo git clone https://github.com/freescout-helpdesk/freescout $install_path
sudo chown -R www-data:www-data $install_path
sudo find $install_path -type f -exec chmod 664 {} \;    
sudo find $install_path -type d -exec chmod 775 {} \;

if [ ! -f "$install_path/artisan" ]; then
    echo "Error occured installing FreeScout into $install_path. Terminating installation"
    exit;
fi
echo "Application installed"

#
# Nginx
#
echo "Configuring nginx..."
sudo echo 'server {
    listen 80;
    listen [::]:80;

    server_name '"$domain_name"';

    root '"$install_path"'/public;

    index index.php index.html index.htm;

    error_log '"$install_path"'/storage/logs/web-server.log;

    # Max. attachment size.
    # It must be also set in PHP.ini via "upload_max_filesize" and "post_max_size" directives.
    client_max_body_size 20M;
    
    location / {
        try_files $uri $uri/ /index.php?$query_string;
    }
    location ~ \.php$ {
        fastcgi_split_path_info ^(.+\.php)(/.+)$;
        fastcgi_pass unix:/run/php/php'"$php_version"'-fpm.sock;
        fastcgi_index index.php;
        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
        include fastcgi_params;
    }
    # Uncomment this location if you want to improve attachments downloading speed.
    # Also make sure to set APP_DOWNLOAD_ATTACHMENTS_VIA=nginx in the .env file.
    #location ^~ /storage/app/attachment/ {
    #    internal;
    #    alias '"$install_path"'/storage/app/attachment/;
    #}
    location ~* ^/storage/attachment/ {
        expires 1M;
        access_log off;
        try_files $uri $uri/ /index.php?$query_string;
    }
    location ~* ^/(?:css|js)/.*\.(?:css|js)$ {
        expires 2d;
        access_log off;
        add_header Cache-Control "public, must-revalidate";
    }
    # The list should be in sync with /storage/app/public/uploads/.htaccess and /config/app.php
    location ~* ^/storage/.*\.((?!(jpg|jpeg|jfif|pjpeg|pjp|apng|bmp|gif|ico|cur|png|tif|tiff|webp|pdf|txt|diff|patch|json|mp3|wav|ogg|wma)).)*$ {
        add_header Content-disposition "attachment; filename=$2";
        default_type application/octet-stream;
    }   
    location ~* ^/(?:css|fonts|img|installer|js|modules|[^\\\]+\..*)$ {
        expires 1M;
        access_log off;
        add_header Cache-Control "public";
    }
    location ~ /\. {
        deny  all;
    }
}' > /etc/nginx/sites-available/$domain_name

if [ -f "/etc/nginx/sites-enabled/default" ]; then
    sudo rm -f /etc/nginx/sites-enabled/default
fi

if [ -f "/etc/nginx/sites-enabled/$domain_name" ]; then
    sudo rm -f "/etc/nginx/sites-enabled/$domain_name" 
fi
sudo ln -s "/etc/nginx/sites-available/$domain_name" "/etc/nginx/sites-enabled/$domain_name"

nginx_test=`sudo nginx -t 2>&1; echo $?`
if [[ ! $nginx_test == *"test is successful"* ]]; then
    echo "Nginx configuration error. Terminating installation"
    sudo nginx -t
    exit;
fi

sudo service nginx reload

#
# HTTPS
# 
printf "\nWould you like to enable HTTPS? It is free and required for browser push notifications to work. (Y/n) [Y]:"
read confirm_https;
confirm_https=${confirm_https:-Y}
if [ $confirm_https = "Y" ]; then

    printf "\nAFTER certbot will finish activating HTTPS, press 'c' to continue installation.\nNow make sure your domain is pointed to the current server and press any key to continue..."
    read confirm_redirect;

    sudo apt-get remove certbot

    if [ "$is_debian" = '1' ]; then
        sudo apt-get -y -q install snapd
    fi

    sudo snap install --classic certbot
    sudo ln -s /snap/bin/certbot /usr/bin/certbot
    sudo certbot --nginx

    sudo certbot --nginx --register-unsafely-without-email

    # Add certbot to root cron
    echo "Adding certbot renewal command to root's crontab..."
    sudo crontab -l > /tmp/rootcron;
    certbot_cron=`more /tmp/rootcron | grep certbot`
    if [ -z "$certbot_cron" ]; then
        sudo echo '0 12 * * * /usr/bin/certbot renew --nginx --quiet' >> /tmp/rootcron
        sudo crontab /tmp/rootcron
    fi
    if [ -f "/tmp/rootcron" ]; then
        sudo rm -f /tmp/rootcron
    fi
fi

#
# Check requirements
# 
echo "Checking requirements..."
php $install_path/artisan freescout:check-requirements

#
# Cron
# 
echo "Configuring cron task for www-data..."
sudo crontab -u www-data -l > /tmp/wwwdatacron;
schedule_cron=`more /tmp/wwwdatacron | grep schedule`
if [ -z "$schedule_cron" ]; then
    sudo echo "# Main cron job
* * * * * php $install_path/artisan schedule:run >> /dev/null 2>&1

# Cron job for automatic updates
# Configure it to install updates automatically as required by modern cybersecurity standards:
# https://github.com/freescout-helpdesk/freescout/wiki/Installation-Guide#92-cron-job-for-automatic-updates
#0 1 * * * $install_path/tools/update.sh --yes >> $install_path/storage/logs/update.log" >> /tmp/wwwdatacron
    sudo crontab -u www-data /tmp/wwwdatacron
fi
if [ -f "/tmp/wwwdatacron" ]; then
    sudo rm -f /tmp/wwwdatacron
fi

#
# Fix permissions after freescout:check-requirements command above
# 
sudo chown -R www-data:www-data $install_path

#
# Finish
#
protocol='http'
if [ $confirm_https = 'Y' ]; then
    protocol='https'
fi

echo "
########################################################
##  Congratulations! Installation is almost finished  ##
########################################################

To complete installation open the Helpdesk URL provided below in your browser
and follow instructions (you can skip setting up the schedule:run cron job as it has
already been done for you).

After finishing installation in order to make sure your installation satisfies
modern cybersecurity standards you may want to configure automatic updates
as described in this instruction:
https://github.com/freescout-helpdesk/freescout/wiki/Installation-Guide#92-cron-job-for-automatic-updates

Also read Final Configuration instructions:
https://github.com/freescout-helpdesk/freescout/wiki/Installation-Guide#10-final-configuration
and FAQ:
https://github.com/freescout-helpdesk/freescout/wiki/FAQ

--------------------------------------------------------

Helpdesk URL: $protocol://$domain_name/install

Database Host: localhost
Database Port: 3306
Database Name: freescout
Database Username: freescout
Database Password: $mysql_pass
"
