volume-restore

#!/bin/bash
#
# HiFiBerry Volume Restore Wrapper
# 
# This script provides a simple interface to the volume restoration functionality
# and is designed to be called by systemd services or administrators.
#

set -e

# Default paths
PYTHON_SCRIPT="/usr/lib/python3/dist-packages/configurator/volume.py"
PYTHON_CMD="python3"

# Function to display usage
usage() {
    echo "Usage: $0 [--store|--restore] [--verbose]"
    echo "  --store    Store current volume settings"
    echo "  --restore  Restore saved volume settings"
    echo "  --verbose  Enable verbose output"
    echo "  --help     Show this help message"
    exit 1
}

# Function to check if the Python script exists
check_script() {
    if [ ! -f "$PYTHON_SCRIPT" ]; then
        echo "Error: Volume script not found at $PYTHON_SCRIPT" >&2
        exit 1
    fi
}

# Parse command line arguments
ACTION=""
VERBOSE=""

while [[ $# -gt 0 ]]; do
    case $1 in
        --store)
            ACTION="--store"
            shift
            ;;
        --restore)
            ACTION="--restore"
            shift
            ;;
        --verbose|-v)
            VERBOSE="--verbose"
            shift
            ;;
        --help|-h)
            usage
            ;;
        *)
            echo "Unknown option: $1" >&2
            usage
            ;;
    esac
done

# Check if action is specified
if [ -z "$ACTION" ]; then
    echo "Error: Must specify either --store or --restore" >&2
    usage
fi

# Check if the Python script exists
check_script

# Execute the Python script with the specified action
exec $PYTHON_CMD "$PYTHON_SCRIPT" $ACTION $VERBOSE