#!/usr/bin/env bash
# Pi Zero W setup for the doorbell PTT server.
# Run as the 'pi' user after flashing Raspberry Pi OS Lite (Bookworm).
#
# Usage:
#   chmod +x install.sh
#   ./install.sh

set -euo pipefail

echo ">>> Installing OS packages..."
sudo apt update
sudo apt install -y ffmpeg alsa-utils python3-venv python3-pip

echo ">>> Creating project dirs..."
mkdir -p "$HOME/doorbell"

echo ">>> Creating Python virtualenv..."
python3 -m venv "$HOME/doorbell-venv"
# shellcheck disable=SC1091
source "$HOME/doorbell-venv/bin/activate"
pip install --upgrade pip
pip install flask flask-sock

echo ">>> Copying server.py..."
SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
cp "$SCRIPT_DIR/server.py" "$HOME/doorbell/server.py"

echo ">>> Installing systemd service..."
sudo cp "$SCRIPT_DIR/doorbell.service" /etc/systemd/system/doorbell.service
sudo systemctl daemon-reload
sudo systemctl enable doorbell

echo ">>> Testing audio output..."
echo "You should hear 'front left' in a moment. Ctrl-C if nothing plays."
speaker-test -D default -c 2 -t wav -l 1 || {
  echo "!! speaker-test failed. Fix ALSA output before starting the service."
  echo "   Try:   sudo raspi-config  ->  System Options  ->  Audio"
  echo "   Or:    aplay -l   and edit /etc/asound.conf"
  exit 1
}

echo ">>> Starting doorbell service..."
sudo systemctl restart doorbell
sleep 2
sudo systemctl status doorbell --no-pager

echo
echo "=========================================="
echo "Done. Quick checks:"
echo "  curl http://127.0.0.1:5555/healthz"
echo "  sudo journalctl -u doorbell -f"
echo "=========================================="