#!/bin/bash

# Function to display usage
usage() {
    echo "Usage: $0 <script_path>"
    echo "Converts the specified Bash script to a binary executable."
    echo "Example: $0 my_script.sh"
    exit 1
}

# Function to install shc
install_shc() {
    echo "Installing shc..."
    if command -v apt &> /dev/null; then
        sudo apt update && sudo apt install -y shc
    elif command -v yum &> /dev/null; then
        sudo yum install -y shc
    else
        echo "Error: Package manager not supported. Please install shc manually."
        exit 1
    fi
}

# Function to fix line endings
fix_line_endings() {
    echo "Fixing line endings for $1..."
    # Check if dos2unix is installed
    if command -v dos2unix &> /dev/null; then
        dos2unix "$1"
    else
        # If dos2unix is not available, use sed as an alternative
        sed -i 's/\r$//' "$1"
    fi
}

# Check the number of arguments
if [ "$#" -ne 1 ]; then
    usage
fi

# Get the script path from the argument
SCRIPT_PATH="$1"

# Check if the specified script file exists
if [ ! -f "$SCRIPT_PATH" ]; then
    echo "Error: File '$SCRIPT_PATH' does not exist."
    exit 1
fi

# Check and fix line endings
fix_line_endings "$SCRIPT_PATH"

# Check if shc is installed
if ! command -v shc &> /dev/null; then
    install_shc
fi

# Create a temporary directory for compilation
TEMP_DIR=$(mktemp -d)

# Compile the script using shc
shc -f "$SCRIPT_PATH" -o "$TEMP_DIR/output_binary"

# Check if compilation was successful
if [ $? -ne 0 ]; then
    echo "Error: Failed to compile the script."
    rm -rf "$TEMP_DIR"
    exit 1
fi

# Move the binary to the original script directory
mv "$TEMP_DIR/output_binary" "$(dirname "$SCRIPT_PATH")/$(basename "$SCRIPT_PATH" .sh)_bin"

# Cleanup
rm -rf "$TEMP_DIR"

# Success message
echo "Success: Script '$SCRIPT_PATH' has been converted to binary as '$(basename "$SCRIPT_PATH" .sh)_bin'."