Parse Command-Line Arguments with Getopt

#!/bin/bash

# Default values
VERBOSE=0
OUTPUT_FILE="output.log"
ENV="development"

# Parse command-line arguments using getopt
OPTIONS=$(getopt -o vo:e: --long verbose,output:,environment: -- "$@")

if [ $? -ne 0 ]; then
    echo "Error: Invalid arguments." >&2
    exit 1
fi

eval set -- "$OPTIONS"

while true; do
    case "$1" in
        -v|--verbose)
            VERBOSE=1
            shift
            ;;
        -o|--output)
            OUTPUT_FILE="$2"
            shift 2
            ;;
        -e|--environment)
            ENV="$2"
            shift 2
            ;;
        --)
            shift
            break
            ;;
        *)
            echo "Internal error!" >&2
            exit 1
            ;;
    esac
done

# Remaining arguments (if any)
# for arg in "$@"; do
#     echo "Remaining argument: $arg"
# done

echo "Script configuration:"
echo "Verbose mode: $VERBOSE"
echo "Output file: $OUTPUT_FILE"
echo "Environment: $ENV"

# Example usage of parsed arguments
if [ "$ENV" == "production" ]; then
    echo "Running in production environment."
else
    echo "Running in $ENV environment."
fi

if [ $VERBOSE -eq 1 ]; then
    echo "Verbose output enabled."
fi

echo "Writing logs to $OUTPUT_FILE"