#!/bin/sh

VERIFIER_URL="https://getalby.com/install/hub/verify.sh"

echo ""
echo ""
echo "⚡️ Welcome to Alby Hub"
echo "-----------------------------------------"
echo "Installing..."


sudo mkdir -p /opt/albyhub
sudo chown -R "$USER:$USER" /opt/albyhub
cd /opt/albyhub || exit 1
wget https://getalby.com/install/hub/server-linux-aarch64.tar.bz2

# add an update script to keep the Hub up to date
# run this to update the hub
wget https://raw.githubusercontent.com/getAlby/hub/master/scripts/pi-aarch64/update.sh
chmod +x update.sh

if [ ! -f "verify.sh" ]; then
  echo "Downloading the verification script..."
  if ! wget -q "$VERIFIER_URL"; then
    echo "❌ Failed to download the verification script." >&2
    exit 1
  fi
  chmod +x verify.sh
fi

if ! ./verify.sh server-linux-aarch64.tar.bz2 albyhub-Server-Linux-aarch64.tar.bz2; then
  echo "❌ Verification failed, aborting installation"
  exit 1
fi

# Extract archives
if ! tar -xvf server-linux-aarch64.tar.bz2; then
  echo "Failed to unpack Alby Hub. Potentially bzip2 is missing"
  echo "Install it with sudo apt-get install bzip2"
  exit 1
fi

# Cleanup
rm server-linux-aarch64.tar.bz2

# allow albyhub to bind on port 80
sudo setcap CAP_NET_BIND_SERVICE=+eip /opt/albyhub/bin/albyhub

# make libs available
echo "/opt/albyhub/lib" | sudo tee /etc/ld.so.conf.d/albyhub.conf
sudo ldconfig

PORT=80
URL="http://$HOSTNAME.local"

### Create systemd service
sudo tee /etc/systemd/system/albyhub.service > /dev/null << EOF
[Unit]
Description=Alby Hub
After=network-online.target
Wants=network-online.target

[Service]
Type=simple
Restart=always
RestartSec=1
User=$USER
ExecStart=/opt/albyhub/bin/albyhub
# Hack to ensure Alby Hub never uses more than 90% CPU
CPUQuota=90%

Environment="PORT=$PORT"
Environment="WORK_DIR=/opt/albyhub/data"
Environment="LDK_ESPLORA_SERVER=https://electrs.getalbypro.com"
Environment="LDK_GOSSIP_SOURCE="

[Install]
WantedBy=multi-user.target
EOF

sudo systemctl enable albyhub
sudo systemctl start albyhub

echo ""
echo ""
echo "✅ Installation finished! Please visit $URL to configure your new Alby Hub."
echo ""