#!/usr/bin/env bash

# Copyright (c) 2021-2023 tteck
# Author: tteck (tteckster)
# License: MIT
# https://github.com/tteck/Proxmox/raw/main/LICENSE

if [ "$VERBOSE" = "yes" ]; then set -x; STD=""; else STD="silent"; fi
silent() { "$@" > /dev/null 2>&1; }
if [ "$DISABLEIPV6" == "yes" ]; then echo "net.ipv6.conf.all.disable_ipv6 = 1" >>/etc/sysctl.conf; $STD sysctl -p; fi
YW=$(echo "\033[33m")
RD=$(echo "\033[01;31m")
BL=$(echo "\033[36m")
GN=$(echo "\033[1;92m")
CL=$(echo "\033[m")
RETRY_NUM=10
RETRY_EVERY=3
CM="${GN}✓${CL}"
CROSS="${RD}✗${CL}"
BFR="\\r\\033[K"
HOLD="-"
set -Eeuo pipefail
trap 'error_handler $LINENO "$BASH_COMMAND"' ERR
function error_handler() {
  local exit_code="$?"
  local line_number="$1"
  local command="$2"
  local error_message="${RD}[ERROR]${CL} in line ${RD}$line_number${CL}: exit code ${RD}$exit_code${CL}: while executing command ${YW}$command${CL}"
  echo -e "\n$error_message\n"
}

function msg_info() {
  local msg="$1"
  echo -ne " ${HOLD} ${YW}${msg}..."
}

function msg_ok() {
  local msg="$1"
  echo -e "${BFR} ${CM} ${GN}${msg}${CL}"
}

function msg_error() {
  local msg="$1"
  echo -e "${BFR} ${CROSS} ${RD}${msg}${CL}"
}

msg_info "Setting up Container OS"
sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
locale-gen >/dev/null
echo $tz > /etc/timezone
ln -sf /usr/share/zoneinfo/$tz /etc/localtime
for ((i=RETRY_NUM; i>0; i--)); do
  if [ "$(hostname -I)" != "" ]; then
    break
  fi
  echo 1>&2 -en "${CROSS}${RD} No Network! "
  sleep $RETRY_EVERY
done
if [ "$(hostname -I)" = "" ]; then
  echo 1>&2 -e "\n${CROSS}${RD} No Network After $RETRY_NUM Tries${CL}"
  echo -e " 🖧  Check Network Settings"
  exit 1
fi
msg_ok "Set up Container OS"
msg_ok "Network Connected: ${BL}$(hostname -I)"

set +e
trap - ERR
if ping -c 1 -W 1 1.1.1.1 &> /dev/null; then msg_ok "Internet Connected"; else
  msg_error "Internet NOT Connected"
    read -r -p "Would you like to continue anyway? <y/N> " prompt
    if [[ "${prompt,,}" =~ ^(y|yes)$ ]]; then
      echo -e " ⚠️  ${RD}Expect Issues Without Internet${CL}"
    else
      echo -e " 🖧  Check Network Settings"
      exit 1
    fi
fi
RESOLVEDIP=$(getent hosts github.com | awk '{ print $1 }')
if [[ -z "$RESOLVEDIP" ]]; then msg_error "DNS Lookup Failure"; else msg_ok "DNS Resolved github.com to ${BL}$RESOLVEDIP${CL}"; fi
set -e
trap 'error_handler $LINENO "$BASH_COMMAND"' ERR

msg_info "Updating Container OS"
$STD apt-get update
$STD apt-get -y upgrade
msg_ok "Updated Container OS"

msg_info "Installing Dependencies (Patience)"
$STD apt-get install -y \
  make \
  build-essential \
  libjpeg-dev \
  libpcap-dev \
  libssl-dev \
  zlib1g-dev \
  libbz2-dev \
  libreadline-dev \
  libsqlite3-dev \
  libmariadb-dev-compat \
  autoconf \
  git \
  curl \
  sudo \
  mc \
  llvm \
  libncursesw5-dev \
  xz-utils \
  tzdata \
  bluez \
  tk-dev \
  libxml2-dev \
  libxmlsec1-dev \
  libffi-dev \
  libopenjp2-7 \
  libtiff5 \
  libturbojpeg0-dev \
  liblzma-dev
msg_ok "Installed Dependencies"

msg_info "Installing Linux D-Bus Message Broker"
cat <<EOF >>/etc/apt/sources.list
deb http://deb.debian.org/debian bullseye-backports main contrib non-free
deb-src http://deb.debian.org/debian bullseye-backports main contrib non-free
EOF
$STD apt-get update
$STD apt-get -t bullseye-backports install -y dbus-broker
$STD systemctl enable --now dbus-broker.service
msg_ok "Installed Linux D-Bus Message Broker"

msg_info "Installing pyenv"
$STD git clone https://github.com/pyenv/pyenv.git ~/.pyenv
set +e
echo 'export PYENV_ROOT="$HOME/.pyenv"' >> ~/.bashrc
echo 'export PATH="$PYENV_ROOT/bin:$PATH"' >> ~/.bashrc
echo -e 'if command -v pyenv 1>/dev/null 2>&1; then\n eval "$(pyenv init --path)"\nfi' >> ~/.bashrc  
msg_ok "Installed pyenv"
. ~/.bashrc
set -e
msg_info "Installing Python 3.11.1"
$STD pyenv install 3.11.1
pyenv global 3.11.1
msg_ok "Installed Python 3.11.1"

msg_info "Installing Home Assistant-Core"
mkdir /srv/homeassistant
cd /srv/homeassistant
python3 -m venv .
source bin/activate
$STD pip install --upgrade pip
$STD python3 -m pip install wheel
$STD pip install mysqlclient
$STD pip install psycopg2-binary
$STD pip install homeassistant
mkdir -p /root/.homeassistant
msg_ok "Installed Home Assistant-Core"

msg_info "Creating Service"
cat <<EOF >/etc/systemd/system/homeassistant.service
[Unit]
Description=Home Assistant
After=network-online.target
[Service]
Type=simple
WorkingDirectory=/root/.homeassistant
ExecStart=/srv/homeassistant/bin/hass -c "/root/.homeassistant"
RestartForceExitStatus=100
[Install]
WantedBy=multi-user.target
EOF
$STD systemctl enable --now homeassistant
msg_ok "Created Service"

echo "export TERM='xterm-256color'" >>/root/.bashrc
echo -e "$APPLICATION LXC provided by https://tteck.github.io/Proxmox/\n" > /etc/motd
chmod -x /etc/update-motd.d/*
if ! getent shadow root | grep -q "^root:[^\!*]"; then
  msg_info "Customizing Container"
  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 $GETTY_OVERRIDE) | sed 's/\.d//')
  msg_ok "Customized Container"
fi
if [[ "${SSH_ROOT}" == "yes" ]]; then sed -i "s/#PermitRootLogin prohibit-password/PermitRootLogin yes/g" /etc/ssh/sshd_config; systemctl restart sshd; fi

msg_info "Cleaning up"
$STD apt-get autoremove
$STD apt-get autoclean
msg_ok "Cleaned"