#!/usr/bin/env bash

set -o errexit 
set -o errtrace 
set -o nounset 
set -o pipefail 
shopt -s expand_aliases
alias die='EXIT=$? LINE=$LINENO error_exit'
trap die ERR
trap 'die "Script interrupted."' INT

function error_exit() {
  trap - ERR
  local DEFAULT='Unknown failure occured.'
  local REASON="\e[97m${1:-$DEFAULT}\e[39m"
  local FLAG="\e[91m[ERROR:LXC] \e[93m$EXIT@$LINE"
  msg "$FLAG $REASON"
  exit $EXIT
}
function msg() {
  local TEXT="$1"
  echo -e "$TEXT"
}

CROSS='\033[1;31m\xE2\x9D\x8C\033[0m'
RD=`echo "\033[01;31m"`
BL=`echo "\033[36m"`
CM='\xE2\x9C\x94\033'
GN=`echo "\033[1;92m"`
CL=`echo "\033[m"`
RETRY_NUM=10
RETRY_EVERY=3
NUM=$RETRY_NUM

echo -en "${GN} Setting up Container OS... "
sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
locale-gen >/dev/null
while [ "$(hostname -I)" = "" ]; do
  1>&2 echo -en "${CROSS}${RD}  No Network! "
  sleep $RETRY_EVERY
  ((NUM--))
  if [ $NUM -eq 0 ]
  then
    1>&2 echo -e "${CROSS}${RD}  No Network After $RETRY_NUM Tries${CL}"    
    exit 1
  fi
done
echo -e "${CM}${CL} \r"
echo -en "${GN} Network Connected: ${BL}$(hostname -I)${CL} "
echo -e "${CM}${CL} \r"

echo -en "${GN} Updating Container OS... "
apt update &>/dev/null
apt-get -qqy upgrade &>/dev/null
echo -e "${CM}${CL} \r"

echo -en "${GN} Installing Dependencies... "
apt-get update &>/dev/null
apt-get -qqy install \
    curl \
    sudo \
    runc &>/dev/null
echo -e "${CM}${CL} \r"

echo -en "${GN} Installing Podman... "
apt-get -y install podman &>/dev/null
echo -e "${CM}${CL} \r"

echo -en "${GN} Pulling Yacht Image... "
podman pull docker.io/selfhostedpro/yacht:latest &>/dev/null
echo -e "${CM}${CL} \r"

echo -en "${GN} Installing Yacht... "
podman volume create yacht >/dev/null
podman run -d \
  --privileged
  --name yacht \
  --restart always \
  -v /var/run/podman/podman.sock:/var/run/docker.sock \
  -v yacht:/config \
  -v /etc/localtime:/etc/localtime:ro \
  -v /etc/timezone:/etc/timezone:ro \
  -p 8000:8000 \
  selfhostedpro/yacht:latest &>/dev/null
echo -e "${CM}${CL} \r"

echo -en "${GN} Pulling Home Assistant Image... "
podman pull docker.io/homeassistant/home-assistant:stable &>/dev/null
echo -e "${CM}${CL} \r"

echo -en "${GN} Installing Home Assistant... "
podman volume create hass_config >/dev/null
podman run -d \
  --privileged
  --name homeassistant \
  --restart unless-stopped \
  -v /dev:/dev \
  -v hass_config:/config \
  -v /etc/localtime:/etc/localtime:ro \
  -v /etc/timezone:/etc/timezone:ro \
  --net=host \
  homeassistant/home-assistant:stable &>/dev/null
echo -e "${CM}${CL} \r"

echo -en "${GN} Creating Update Script... "
file_path="/root/update.sh"
echo "#!/bin/bash
echo -e '\e[1;33m Pulling New Stable Version... \e[0m'
podman pull docker.io/homeassistant/home-assistant:stable
echo -e '\e[1;33m Stopping Home Assistant... \e[0m'
podman stop homeassistant
echo -e '\e[1;33m Removing Home Assistant... \e[0m'
podman rm homeassistant
echo -e '\e[1;33m Starting Home Assistant... \e[0m'
podman run -d \
  --name homeassistant \
  --restart unless-stopped \
  -v /dev:/dev \
  -v hass_config:/config \
  -v /etc/localtime:/etc/localtime:ro \
  -v /etc/timezone:/etc/timezone:ro \
  --net=host \
  homeassistant/home-assistant:stable
echo -e '\e[1;33m Removing Old Image... \e[0m'
podman image prune -f
echo -e '\e[1;33m Finished Update! \e[0m'" > $file_path
sudo chmod +x /root/update.sh
echo -e "${CM}${CL} \r"

echo -en "${GN} Customizing LXC... "
rm /etc/motd
rm /etc/update-motd.d/10-uname
touch ~/.hushlogin
GETTY_OVERRIDE="/etc/systemd/system/container-getty@1.service.d/override.conf"
mkdir -p $(dirname $GETTY_OVERRIDE)
cat << EOF > $GETTY_OVERRIDE
[Service]
ExecStart=
ExecStart=-/sbin/agetty --autologin root --noclear --keep-baud tty%I 115200,38400,9600 \$TERM
EOF
systemctl daemon-reload
systemctl restart $(basename $(dirname $GETTY_OVERRIDE) | sed 's/\.d//')

podman generate systemd \
    --new --name homeassistant \
    > /etc/systemd/system/homeassistant.service 
systemctl enable homeassistant &>/dev/null

podman generate systemd \
    --new --name yacht \
    > /etc/systemd/system/yacht.service 
systemctl enable yacht &>/dev/null
echo -e "${CM}${CL} \r"

echo -en "${GN} Cleanup... "
rm -rf /podman_ha_setup.sh /var/{cache,log}/* /var/lib/apt/lists/*
echo -e "${CM}${CL} \n"