#!/usr/bin/env bash
set -euo pipefail

# KosmoConnect Bridge Daemon Installer for Raspberry Pi
# Run this script as root (or with sudo)

INSTALL_DIR="/opt/kosmo-bridge"
SERVICE_FILE="kosmo-bridge.service"

if [ "$EUID" -ne 0 ]; then
    echo "Please run as root (e.g., sudo ./install.sh)"
    exit 1
fi

echo "=== KosmoConnect Bridge Installer ==="

# 1. Create user
if ! id -u kosmo &>/dev/null; then
    echo "Creating kosmo user..."
    useradd --system --no-create-home --home-dir "$INSTALL_DIR" kosmo
fi

# 2. Install directory
echo "Setting up $INSTALL_DIR ..."
mkdir -p "$INSTALL_DIR"
cp -r src "$INSTALL_DIR/"
chown -R kosmo:kosmo "$INSTALL_DIR"

# 3. Python virtual environment
echo "Creating Python venv..."
python3 -m venv "$INSTALL_DIR/venv"
"$INSTALL_DIR/venv/bin/pip" install --upgrade pip
"$INSTALL_DIR/venv/bin/pip" install -r requirements.txt

# 4. Systemd service
echo "Installing systemd service..."
cp "$SERVICE_FILE" /etc/systemd/system/
systemctl daemon-reload
systemctl enable kosmo-bridge.service

echo ""
echo "==========================================="
echo "Installation complete."
echo ""
echo "Before starting the service, edit:"
echo "  /etc/systemd/system/kosmo-bridge.service"
echo "to set your MQTT_HOST, MQTT_USER, MQTT_PASS, etc."
echo ""
echo "For network-connected devices (e.g., T-Deck over WiFi), uncomment:"
echo "  Environment=\"MESHTASTIC_HOST=192.168.1.45\""
echo "  Environment=\"MESHTASTIC_TCP_PORT=4403\""
echo "and comment out MESHTASTIC_DEVICE."
echo ""
echo "Then run:"
echo "  sudo systemctl start kosmo-bridge"
echo "  sudo systemctl status kosmo-bridge"
echo "  sudo journalctl -u kosmo-bridge -f"
echo "==========================================="