#!/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 occured."
  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}"
}

msg_info "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
msg_ok "Setup Container OS"
msg_ok "Network Connected: ${BL}$(hostname -I)"

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

msg_info "Installing Dependencies"
apt-get update &>/dev/null
apt-get -qqy install \
    git \
    build-essential \
    pkgconf \
    libssl-dev \
    libmariadb-dev-compat \
    libpq-dev \
    curl \
    sudo &>/dev/null
msg_ok "Installed Dependencies"

WEBVAULT=$(curl -s https://api.github.com/repos/dani-garcia/bw_web_builds/releases/latest \
| grep "tag_name" \
| awk '{print substr($2, 2, length($2)-3) }') \

VAULT=$(curl -s https://api.github.com/repos/dani-garcia/vaultwarden/releases/latest \
| grep "tag_name" \
| awk '{print substr($2, 2, length($2)-3) }') \

msg_info "Installing Rust"
curl https://sh.rustup.rs -sSf | sh -s -- -y --profile minimal &>/dev/null
echo 'export PATH=~/.cargo/bin:$PATH' >> ~/.bashrc &>/dev/null
export PATH=~/.cargo/bin:$PATH &>/dev/null
which rustc &>/dev/null
msg_ok "Installed Rust"

msg_info "Building Vaultwarden ${VAULT} (Patience)"
git clone https://github.com/dani-garcia/vaultwarden &>/dev/null
cd vaultwarden
cargo build --features "sqlite,mysql,postgresql" --release &>/dev/null
msg_ok "Built Vaultwarden ${VAULT}"

addgroup --system vaultwarden &>/dev/null
adduser --system --home /opt/vaultwarden --shell /usr/sbin/nologin --no-create-home --gecos 'vaultwarden' --ingroup vaultwarden --disabled-login --disabled-password vaultwarden &>/dev/null
mkdir -p /opt/vaultwarden/bin
mkdir -p /opt/vaultwarden/data
cp target/release/vaultwarden /opt/vaultwarden/bin/

msg_info "Downloading Web-Vault ${WEBVAULT}"
curl -fsSLO https://github.com/dani-garcia/bw_web_builds/releases/download/$WEBVAULT/bw_web_$WEBVAULT.tar.gz &>/dev/null
tar -xzf bw_web_$WEBVAULT.tar.gz -C /opt/vaultwarden/ &>/dev/null
msg_ok "Downloaded Web-Vault ${WEBVAULT}"

cat <<EOF > /opt/vaultwarden/.env
## https://github.com/dani-garcia/vaultwarden/blob/main/.env.template
ROCKET_ADDRESS=0.0.0.0
DATA_FOLDER=/opt/vaultwarden/data
DATABASE_MAX_CONNS=10
WEB_VAULT_FOLDER=/opt/vaultwarden/web-vault
WEB_VAULT_ENABLED=true
EOF

msg_info "Creating Service"
chown -R vaultwarden:vaultwarden /opt/vaultwarden/
chown root:root /opt/vaultwarden/bin/vaultwarden
chmod +x /opt/vaultwarden/bin/vaultwarden
chown -R root:root /opt/vaultwarden/web-vault/
chmod +r /opt/vaultwarden/.env
service_path="/etc/systemd/system/vaultwarden.service" &>/dev/null

echo "[Unit]
Description=Bitwarden Server (Powered by Vaultwarden)
Documentation=https://github.com/dani-garcia/vaultwarden
After=network.target
[Service]
User=vaultwarden
Group=vaultwarden
EnvironmentFile=-/opt/vaultwarden/.env
ExecStart=/opt/vaultwarden/bin/vaultwarden
LimitNOFILE=65535
LimitNPROC=4096
PrivateTmp=true
PrivateDevices=true
ProtectHome=true
ProtectSystem=strict
DevicePolicy=closed
ProtectControlGroups=yes
ProtectKernelModules=yes
ProtectKernelTunables=yes
RestrictNamespaces=yes
RestrictRealtime=yes
MemoryDenyWriteExecute=yes
LockPersonality=yes
WorkingDirectory=/opt/vaultwarden
ReadWriteDirectories=/opt/vaultwarden/data
AmbientCapabilities=CAP_NET_BIND_SERVICE
[Install]
WantedBy=multi-user.target" > $service_path
systemctl daemon-reload
systemctl enable --now vaultwarden.service &>/dev/null
msg_ok "Created Service"

PASS=$(grep -w "root" /etc/shadow | cut -b6);
  if [[ $PASS != $ ]]; then
msg_info "Customizing Container"
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//')
msg_ok "Customized Container"
  fi
  
msg_info "Cleaning up"
apt-get autoremove >/dev/null
apt-get autoclean >/dev/null
rm -rf /var/{cache,log}/* /var/lib/apt/lists/*
msg_ok "Cleaned"