#!/bin/bash

# Stop on any error
set -e

echo "Starting Librespot installation and setup..."

# Step 1: Update and Install Dependencies
echo "Updating system and installing required dependencies..."
sudo apt update && sudo apt upgrade -y
sudo apt install -y build-essential git libasound2-dev libavahi-client-dev avahi-daemon avahi-utils cargo

# Step 2: Clone or Update Librespot Repository
if [ ! -d "librespot" ]; then
    echo "Cloning Librespot repository..."
    git clone https://github.com/librespot-org/librespot.git
else
    echo "Updating Librespot repository..."
    cd librespot && git pull && cd ..
fi

# Step 3: Build Librespot with ALSA and Zeroconf Discovery
echo "Building Librespot with ALSA and Avahi support..."
cd librespot
cargo clean
cargo build --release --no-default-features --features "alsa-backend with-avahi"

# Step 4: Move Binary to Secured Location
echo "Moving Librespot binary to /opt/librespot..."
sudo mkdir -p /opt/librespot
sudo cp target/release/librespot /opt/librespot/
sudo chmod 755 /opt/librespot/librespot

# Step 5: Protect Binary from Updates
echo "Protecting Librespot binary from accidental modifications..."
sudo chattr +i /opt/librespot/librespot

# Step 6: Create and Configure Systemd Service
echo "Setting up Librespot as a systemd service..."
sudo bash -c 'cat > /etc/systemd/system/librespot.service' <<EOL
[Unit]
Description=Librespot (Spotify Connect)
After=network.target sound.target

[Service]
ExecStart=/opt/librespot/librespot --name "Volumio" --backend alsa --device hw:0,0 --bitrate 320
Restart=always
User=volumio

[Install]
WantedBy=multi-user.target
EOL

# Step 7: Reload and Start the Service
echo "Reloading systemd configuration and starting Librespot service..."
sudo systemctl daemon-reload
sudo systemctl enable librespot
sudo systemctl start librespot

# Step 8: Verify Installation
echo "Verifying Librespot service status..."
sudo systemctl status librespot

echo "Installation complete! Librespot is set up and protected from updates. Rebooting to finalize..."
sudo reboot