#!/bin/sh
# =============================================================
# ZeroTier installer per UDM-Pro / UCG (Unifi)
# Uso: curl -fsSL https://iotashare.myftp.org/Software/Utilities/zerotier-unifi.sh | bash
# =============================================================

ZEROTIER_DEB_URL="https://download.zerotier.com/dist/debian/bullseye/zerotier-one_1.16.0-2_arm64.deb"
INSTALL_DIR="/config/data/firstboot/install-packages"
DEB_PATH="$INSTALL_DIR/zerotier-one_arm64.deb"

# --- Chiedi il Network ID ---
if [ -z "$1" ]; then
    printf "Inserisci il ZeroTier Network ID: "
    read NETWORK_ID
else
    NETWORK_ID="$1"
fi

if [ -z "$NETWORK_ID" ]; then
    echo "[ERRORE] Network ID non specificato. Uscita."
    exit 1
fi

# --- 1. Crea directory e scarica il .deb direttamente da ZeroTier ---
echo "[*] Download pacchetto ZeroTier..."
mkdir -p "$INSTALL_DIR"
curl -fsSL "$ZEROTIER_DEB_URL" --output "$DEB_PATH"
if [ $? -ne 0 ]; then
    echo "[ERRORE] Download fallito. Controlla la connessione."
    exit 1
fi

# --- 2. Installa ---
echo "[*] Installazione ZeroTier..."
dpkg -i "$DEB_PATH"
if [ $? -ne 0 ]; then
    echo "[ERRORE] Installazione dpkg fallita."
    exit 1
fi

# --- 3. Avvia il servizio ---
echo "[*] Avvio zerotier-one.service..."
systemctl start zerotier-one.service
sleep 2
systemctl status zerotier-one.service --no-pager

# --- 4. Join alla rete ---
echo "[*] Join alla rete $NETWORK_ID..."
zerotier-cli join "$NETWORK_ID"

# --- 5. Script di reinstallazione al boot ---
echo "[*] Creazione script di boot..."
cat > "$INSTALL_DIR/install.sh" << BOOTSCRIPT
#!/bin/sh
if ! command -v zerotier-cli >/dev/null 2>&1; then
    dpkg -i $DEB_PATH
fi
if ! systemctl is-active --quiet zerotier-one.service; then
    systemctl start zerotier-one.service
fi
BOOTSCRIPT
chmod +x "$INSTALL_DIR/install.sh"

# --- 6. Servizio systemd per sopravvivere ai reboot ---
echo "[*] Configurazione servizio systemd..."
tee /etc/systemd/system/zerotier-reinstall.service > /dev/null << 'EOF'
[Unit]
Description=Install and start ZeroTier if not present
After=network.target

[Service]
Type=oneshot
ExecStart=/config/data/firstboot/install-packages/install.sh
RemainAfterExit=true

[Install]
WantedBy=multi-user.target
EOF

systemctl daemon-reload
systemctl enable zerotier-reinstall.service

# --- 7. Riepilogo finale ---
echo ""
echo "============================================="
echo "[OK] Installazione ZeroTier completata!"
echo "[!] Vai su https://my.zerotier.com e autorizza"
echo "    il nodo nella rete $NETWORK_ID"
echo "============================================="
echo ""
zerotier-cli listnetworks