#!/bin/bash

if [ ! -f /etc/os-release ]; then
        echo This script is only for use with Ubuntu and Debian systems.
        exit 1
fi

source /etc/os-release

echo
echo AMP QuickStart installation script for Ubuntu 16.04+ and Debian 8+
echo This installer will create a default AMP management instance, listening on port 8080 that will start automatically on boot.
echo press CTRL+C to cancel installation.
echo

if [[ $EUID -ne 0 ]]; then
        echo You need root access to run this script! Try putting 'sudo' in front.
        exit 2
fi

echo Distribution: $ID
echo
echo Enter a password to use with the AMP system user:
read -sp "System Password: " syspass
echo
echo

echo Enter new login details for use with AMP \(The password must not be the same as the system password\!\)
read -p "Username: " ampuser
read -sp "Password: " amppass
echo
read -sp "Confirm Password:" amppassconfirm
echo
echo
echo

if [ "$syspass" == "$amppass" ]; then
        echo The system and AMP passwords cannot be the same. Aborting.
        exit 3
fi

if [ "$amppass" != "$amppassconfirm" ]; then
        echo Confirmation password does not match. Aborting.
        exit 4
fi

echo Ready to install AMP. Press ENTER to continue or CTRL+C to cancel.

read

echo
echo Installing AMP.
echo Creating system user...

useradd -d /home/AMP -m AMP -s /bin/bash
echo AMP:$syspass | chpasswd

echo Installing prerequisites...

if [ "$ID" == "debian" ]; then
        apt-get install software-properties-common dirmngr apt-transport-https iptables-persistent
else
		apt-get install software-properties-common dirmngr apt-transport-https
fi

echo Adding repository...
apt-key adv --fetch-keys http://repo.cubecoders.com/archive.key
apt-add-repository "deb http://repo.cubecoders.com/ debian/"
apt update

echo Installing instance manager...
apt install -y ampinstmgr --install-suggests

echo Adding firewall rules...
if [ "$ID" == "debian" ]; then
        iptables -A INPUT -p tcp -m tcp --dport 8080 -j ACCEPT
        iptables-save > /etc/iptables/rules.v4
else
        ufw allow from any to any port 8080 proto tcp
fi

echo Creating default instance...
su -l AMP -c "ampinstmgr quick $ampuser $amppass;exit"
su -l AMP -c '(crontab -l ; echo "@reboot ampinstmgr -x") | crontab -'

echo Installation complete!
echo
echo You can now reach AMP at http://`hostname -I | cut -f 1 -d ' '`:8080/