#!/usr/bin/env bash
YW=$(echo "\033[33m")
RD=$(echo "\033[01;31m")
BL=$(echo "\033[36m")
GN=$(echo "\033[1;92m")
CL=$(echo "\033[m")
RETRY_NUM=10
RETRY_EVERY=3
NUM=$RETRY_NUM
CM="${GN}✓${CL}"
CROSS="${RD}✗${CL}"
BFR="\\r\\033[K"
HOLD="-"
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

function error_exit() {
  trap - ERR
  local reason="Unknown failure occurred."
  local msg="${1:-$reason}"
  local flag="${RD}‼ ERROR ${CL}$EXIT@$LINE"
  echo -e "$flag $msg" 1>&2
  exit $EXIT
}

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
while [ "$(hostname -I)" = "" ]; do
  echo 1>&2 -en "${CROSS}${RD} No Network! "
  sleep $RETRY_EVERY
  ((NUM--))
  if [ $NUM -eq 0 ]; then
    echo 1>&2 -e "${CROSS}${RD} No Network After $RETRY_NUM Tries${CL}"
    exit 1
  fi
done
msg_ok "Set up Container OS"
msg_ok "Network Connected: ${BL}$(hostname -I)"

set +e
alias die=''
if nc -zw1 8.8.8.8 443; then msg_ok "Internet Connected"; else
  msg_error "Internet NOT Connected"
  exit 1
fi
RESOLVEDIP=$(nslookup "github.com" | awk -F':' '/^Address: / { matched = 1 } matched { print $2}' | xargs)
if [[ -z "$RESOLVEDIP" ]]; then msg_error "DNS Lookup Failure"; else msg_ok "DNS Resolved github.com to $RESOLVEDIP"; fi
alias die='EXIT=$? LINE=$LINENO error_exit'
set -e

msg_info "Updating Container OS"
apt-get update &>/dev/null
apt-get -y upgrade &>/dev/null
msg_ok "Updated Container OS"

msg_info "Installing Dependencies"
apt-get -y install software-properties-common apt-utils &>/dev/null
apt-get -y update &>/dev/null
apt-get -y upgrade &>/dev/null
apt-get -y install \
    build-essential \
    gcc \
    gir1.2-gtk-3.0 \
    libcairo2-dev \
    libgirepository1.0-dev \
    libglib2.0-dev \
    libjpeg-dev \
    libgif-dev \
    libopenjp2-7 \
    libpango1.0-dev \
    librsvg2-dev \
    pkg-config \
    curl \
    sudo &>/dev/null
msg_ok "Installed Dependencies"

msg_info "Installing GStreamer"
apt-get -y install \
    gstreamer1.0-tools \
    libgstreamer1.0-dev \
    libgstreamer-plugins-base1.0-dev \
    libgstreamer-plugins-bad1.0-dev \
    gstreamer1.0-plugins-base \
    gstreamer1.0-plugins-good \
    gstreamer1.0-plugins-bad \
    gstreamer1.0-plugins-ugly \
    gstreamer1.0-libav \
    gstreamer1.0-alsa &>/dev/null
msg_ok "Installed GStreamer"

msg_info "Setting up Node.js Repository"
curl -fsSL https://deb.nodesource.com/setup_16.x | bash - &>/dev/null
msg_ok "Set up Node.js Repository"

msg_info "Installing Node.js"
apt-get install -y nodejs &>/dev/null
msg_ok "Installed Node.js"

msg_info "Installing Python3"
apt-get -y install \
    python3 \
    python3-dev \
    python3-gi \
    python3-gst-1.0 \
    python3-matplotlib \
    python3-numpy \
    python3-opencv \
    python3-pil \
    python3-pip \
    python3-setuptools \
    python3-skimage \
    python3-wheel &>/dev/null
python3 -m pip install --upgrade pip &>/dev/null
python3 -m pip install aiofiles debugpy typing_extensions typing &>/dev/null
msg_ok "Installed Python3"

read -r -p "Would you like to add Coral Edge TPU support? <y/N> " prompt
if [[ $prompt == "y" || $prompt == "Y" || $prompt == "yes" || $prompt == "Yes" ]]; then
  CORAL="Y"
else
  CORAL="N"
fi

if [[ $CORAL == "Y" ]]; then
msg_info "Adding Coral Edge TPU Support"
echo "deb https://packages.cloud.google.com/apt coral-edgetpu-stable main" | tee /etc/apt/sources.list.d/coral-edgetpu.list &>/dev/null
curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | apt-key add - &>/dev/null
apt-get -y update &>/dev/null
apt-get -y install libedgetpu1-std &>/dev/null
msg_ok "Coral Edge TPU Support Added"
fi

msg_info "Installing Scrypted"
sudo -u root npx -y scrypted@latest install-server &>/dev/null
msg_info "Installed Scrypted"

msg_info "Creating Service"
service_path="/etc/systemd/system/scrypted.service"
echo "[Unit]
Description=Scrypted service
After=network.target

[Service]
User=root
Group=root
Type=simple
ExecStart=/usr/bin/npx -y scrypted serve
Restart=on-failure
RestartSec=3

[Install]
WantedBy=multi-user.target" >$service_path
systemctl enable --now scrypted.service &>/dev/null
msg_ok "Created Service"
PASS=$(grep -w "root" /etc/shadow | cut -b6)
if [[ $PASS != $ ]]; then
  msg_info "Customizing Container"
  chmod -x /etc/update-motd.d/*
  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//')
  msg_ok "Customized Container"
fi

msg_info "Cleaning up"
apt-get autoremove >/dev/null
apt-get autoclean >/dev/null
msg_ok "Cleaned"