#!/usr/bin/env bash

set -euo pipefail

ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"

DEFAULT_LICENSE="DLS2eyJvcmdhbml6YXRpb25JRCI6IjIwMDAwMSJ9"

get_profile_file() {

if [[ -n "${BASH_VERSION:-}" ]]; then

echo "$HOME/.bashrc"

elif [[ -n "${ZSH_VERSION:-}" ]]; then

echo "$HOME/.zshrc"

else

echo "$HOME/.profile"

fi

}

ensure_profile_comment() {

local profile="$1"

local comment="# Added by barcode-reader-java-samples/setup.sh"

if [[ ! -f "$profile" ]]; then

touch "$profile"

fi

if ! grep -Fx "$comment" "$profile" >/dev/null 2>&1; then

echo "$comment" >> "$profile"

fi

}

print_section() {

echo

echo "============================================================"

echo "${1}"

echo "============================================================"

}

command_exists() {

command -v "$1" >/dev/null 2>&1

}

require_root_or_sudo() {

if [[ $EUID -ne 0 ]]; then

if ! command_exists sudo; then

echo "Error: this script must be run as root or with sudo available." >&2

exit 1

fi

fi

}

apt_install() {

require_root_or_sudo

local pkgs=("openjdk-17-jdk" "maven" "libxi6" "libxtst6")

print_section "Updating apt package index"

if [[ $EUID -ne 0 ]]; then

sudo apt-get update

sudo apt-get install -y "${pkgs[@]}"

else

apt-get update

apt-get install -y "${pkgs[@]}"

fi

}

brew_install() {

local pkgs=("openjdk@17" "maven")

if ! command_exists brew; then

echo "Homebrew is required on macOS but was not found." >&2

echo "Install Homebrew from https://brew.sh/ and re-run this script." >&2

exit 1

fi

print_section "Installing packages with Homebrew"

brew update

for pkg in "${pkgs[@]}"; do

if brew list "$pkg" >/dev/null 2>&1; then

echo "Package $pkg already installed."

else

brew install "$pkg"

fi

done

# Ensure Java 17 is linked for the current shell session.

if [[ "${pkgs[*]}" == *"openjdk@17"* ]]; then

local java_home

java_home="$(/usr/libexec/java_home -v17 2>/dev/null || true)"

if [[ -n "${java_home}" ]]; then

export JAVA_HOME="${java_home}"

if ! grep -q "JAVA_HOME" "$HOME/.bash_profile" 2>/dev/null; then

{

echo "# Added by barcode-reader-java-samples/setup.sh"

echo "export JAVA_HOME=\"${java_home}\""

echo 'export PATH="$JAVA_HOME/bin:$PATH"'

} >> "$HOME/.bash_profile"

fi

fi

fi

}

install_dependencies() {

if command_exists javac && command_exists mvn; then

echo "Java compiler and Maven already installed. Skipping installation."

return

fi

case "$(uname -s)" in

Linux)

if command_exists apt-get; then

apt_install

else

echo "Unsupported Linux distribution. Please install OpenJDK 17 and Maven manually." >&2

exit 1

fi

;;

Darwin)

brew_install

;;

*)

echo "Unsupported operating system $(uname -s)." >&2

exit 1

;;

esac

}

ensure_license_variable() {

local current="${DYNAMSOFT_LICENSE:-}"

if [[ -z "$current" ]]; then

export DYNAMSOFT_LICENSE="$DEFAULT_LICENSE"

current="$DEFAULT_LICENSE"

fi

local profile_file

profile_file="$(get_profile_file)"

ensure_profile_comment "$profile_file"

if ! grep -Fx "export DYNAMSOFT_LICENSE=\"$current\"" "$profile_file" >/dev/null 2>&1; then

echo "export DYNAMSOFT_LICENSE=\"$current\"" >> "$profile_file"

echo "Configured DYNAMSOFT_LICENSE in $profile_file"

else

echo "DYNAMSOFT_LICENSE already configured in $profile_file"

fi

}

configure_java_runtime() {

if ! command_exists java; then

echo "Java runtime not found. Skipping JAVA_HOME configuration."

return

fi

local java_bin

java_bin="$(command -v java)"

local java_home

local uname_out

uname_out="$(uname -s)"

if [[ "$uname_out" == "Darwin" ]]; then

java_home="$(/usr/libexec/java_home -v 17 2>/dev/null || /usr/libexec/java_home 2>/dev/null || true)"

if [[ -z "$java_home" ]]; then

java_home="$(cd "$(dirname "$java_bin")/.." && pwd)"

fi

else

java_home="$(dirname "$(dirname "$(readlink -f "$java_bin")")")"

fi

if [[ -z "$java_home" ]]; then

echo "Unable to determine JAVA_HOME."

return

fi

export JAVA_HOME="$java_home"

local profile_file

profile_file="$(get_profile_file)"

ensure_profile_comment "$profile_file"

if ! grep -Fx "export JAVA_HOME=\"$JAVA_HOME\"" "$profile_file" >/dev/null 2>&1; then

echo "export JAVA_HOME=\"$JAVA_HOME\"" >> "$profile_file"

echo "Configured JAVA_HOME in $profile_file"

else

echo "JAVA_HOME already configured in $profile_file"

fi

if [[ "$uname_out" == "Linux" ]]; then

local ld_entry="export LD_LIBRARY_PATH=\"$JAVA_HOME/lib:$JAVA_HOME/lib/server:${LD_LIBRARY_PATH:-}\""

if ! grep -Fx "$ld_entry" "$profile_file" >/dev/null 2>&1; then

echo "$ld_entry" >> "$profile_file"

echo "Configured LD_LIBRARY_PATH in $profile_file"

else

echo "LD_LIBRARY_PATH already configured in $profile_file"

fi

export LD_LIBRARY_PATH="$JAVA_HOME/lib:$JAVA_HOME/lib/server:${LD_LIBRARY_PATH:-}"

fi

}

prepare_helloworld_sample() {

print_section "Preparing HelloWorld sample"

mvn -q -f "$ROOT_DIR/Samples/HelloWorld/pom.xml" dependency:go-offline

mvn -q -f "$ROOT_DIR/Samples/HelloWorld/pom.xml" -DskipTests package

}

main() {

print_section "Installing Java and Maven"

install_dependencies

print_section "Setting up Dynamsoft license"

ensure_license_variable

print_section "Configuring Java runtime paths"

configure_java_runtime

prepare_helloworld_sample

cat <<'EOM'

Setup complete. You can now run the HelloWorld sample with:

cd Samples/HelloWorld

mvn -q exec:java -Dexec.mainClass=ReadAnImage

EOM

}

main "$@"