#!/bin/sh

    #That script :
    # 1. Defines the main steps through functions. 
    # 2. Calls them

   #
   # Initialize the environnment by updating server and installing apache2, php and several requirements
   #
   init() {

       apt-get update
       apt-get -y upgrade
       apt-get install -y git apache2 unzip
       #Install php
       apt-get install -y php libapache2-mod-php php-mcrypt php-mysql php-xml

   }


   #
   # Create a new user and register Jeyser's subdomain.
   #
   configure_user(){

       echo "For security reasons, we will create a new user and avoid root login through SSH.
        New user's name ?"
       read new_user

       while [ $new_password != $new_password_confirmation ] || [ $new_password == "" ];  do
           echo "Mot de passe du nouvel utilisateur ?"
           read new_password
           echo "Confirmation du mot de passe ?"
           read new_password_confirm
           if  [ $new_password != $new_password_confirm ]; then
               echo "Passwords don't match, retry. "
           fi
       done

       useradd -m -d "/home/$new_user/" -s /bin/bash $new_user
       echo $new_password | passwd $new_user
       adduser $new_user sudo
       adduser $new_user www-data

       echo "Jeyser CRM sub domain ?"
       read sub_domain
   }

   #
   # Configure Apache :
   # - Give PHP files the highest priority.
   # - Activate mod_rewrite for URL Rewriting.
   # - Change DocumentRoot to where Jeyser will be installed.
   #
   configure_apache(){
       sed -i 's/DocumentRoot \/var\/www\/html/DocumentRoot \/var\/www\/html\/Incipio\/web/g' /etc/apache2/sites-enabled/000-default.conf
       cat > /etc/apache2/mods-enabled/dir.conf <<'endmsg'
   <IfModule mod_dir.c>
       DirectoryIndex index.php index.html index.cgi index.pl index.xhtml index.htm
   </IfModule>
   endmsg
       a2enmod rewrite
       service apache2 restart
   }

   #
   # Install Mysql and secure installation (executed commands are the same that mysql_secure_installation would give)
   # Create a mysql user for Jeyser
   #
   install_mysql(){
   echo -e "\033[36m Heads Up !
          We are going to set up the database. It is where all informations will be stored. We will create 2 accounts :
           - An administrator account : root
           - A user with limited access for Jeyser : incipio.
           Carefully write the passwords you will choose for root and incipio because they will protect all your data.

           Press return to confirm.\e[0m "
   read validation
   apt-get install -y mysql-server

   #create a mysql user with limited rights on only one db

   cat > ./mysql_secure_installation.sql <<'endmsg'
   DELETE FROM mysql.user WHERE User='root' AND Host NOT IN ('localhost', '127.0.0.1', '::1');
   DROP DATABASE IF EXISTS test;
   DELETE FROM mysql.db WHERE Db='test' OR Db='test\\_%';
   FLUSH PRIVILEGES;
   endmsg
   echo "\033[33m Type your mysql root password \e[0m"
   mysql -u root -p < mysql_secure_installation.sql
   rm ./mysql_secure_installation.sql

   cat > ./install.sql <<'endmsg'
   create database incipio;
   grant usage on *.* to incipio@localhost identified by 'incipiopass';
   grant all privileges on incipio.* to incipio@localhost;
   Flush privileges;
   endmsg
   echo "\033[33m Type your mysql root password again\e[0m "
   mysql -u root -p < install.sql
   rm ./install.sql

   }

   #install composer.
   install_composer(){
       cd /var/www/html
       EXPECTED_SIGNATURE=$(wget -q -O - https://composer.github.io/installer.sig)
       php -r "copy('https://getcomposer.org/installer', 'composer-setup.php');"
       ACTUAL_SIGNATURE=$(php -r "echo hash_file('SHA384', 'composer-setup.php');")

       if [ "$EXPECTED_SIGNATURE" != "$ACTUAL_SIGNATURE" ]
       then
           >&2 echo 'ERROR: Invalid installer signature'
           rm composer-setup.php
           break
       fi

       php composer-setup.php --quiet
       RESULT=$?
       rm composer-setup.php
       if [ ! -f ./composer.phar ]; then
           echo "Composer not installed, trying with repository version"
           apt-get install -y composer
       fi

       mv ./composer.phar /usr/local/bin/composer
       echo "You should see Composer version just below. Press Enter to continue."
       composer --version

       read validation
   }


   install_jeyser(){

       #install jeyser
       cd /var/www/html
       git clone https://github.com/n7consulting/Incipio.git
       cd Incipio

       #installation of php dependencies for production.
       composer install --no-dev

       #should display symfony version.
       php app/console --version

       #let's go for db setup !!

       php app/console doctrine:schema:update
       php app/console doctrine:fixtures:load -n
       php app/console assets:install

       #Make newly created user the owner of all that
       chown -R $new_user /var/www/html/Incipio
       chgrp -R www-data /var/www/html/Incipio
   }

   install_ssl(){
       #on configure openssl
       a2enmod ssl
       apt-get install -y python-letsencrypt-apache
       service apache2 restart
   }


   echo "
   Welcome on Jeyser installation script.
   IT IS DESIGNED TO CREATE A PRODUCTION ENVIRONNMENT. DONT USE IT FOR DEV !!

   THIS SCRIPT HAS BEEN WELL-TESTED. HOWEVER, IF IT FAILS, DONT TRY TO RUN IT AGAIN, CONTACT DSI@N7CONSULTING.FR
   and provide a detail of everything that is written on your console.

   To get a SSL Certificate, it's better if you have already mapped a subdomain to that server's ip. If you didn't, stop that script or configure letsencrypt on your own.

   You can get support by contacting dsi@n7consulting.fr

   Are you ready to begin installation ?
   "

   read -p "Type Yes or no : " prompt
   #if [[ $prompt =~ [yY](es)* ]]
   if true
   then
       ${new_user} = ""
       ${new_password} = "dummy"
       ${new_password_confirm} = "dummy"
       ${sub_domain} = ""
       mkdir -p /var && mkdir -p /var/www && mkdir -p /var/www/html
       cd /var/www/html
       configure_user
       init
       configure_apache
       install_mysql
       install_composer
       install_jeyser
   else
       break;
   fi