# Setup Commodore 64 development environment (KickAssembler & VICE)
_setup_c64() {
    [ -n "$ZSH_VERSION" ] && setopt localoptions nonomatch nullglob

    _add_to_path() {
        [ -d "$1" ] || return 0
        case ":$PATH:" in
            *":$1:"*) ;;
            *) PATH="$1:$PATH"; export PATH ;;
        esac
    }

    _add_to_classpath() {
        [ -f "$1" ] || return 0
        case ":$CLASSPATH:" in
            *":$1:"*) ;;
            *) CLASSPATH="${CLASSPATH:+$CLASSPATH:}$1"; export CLASSPATH ;;
        esac
    }

    # 1. KickAssembler search locations (macOS and Linux)
    _kickass_candidates=(
        "${KICKASS_JAR:-}"
        "${KICKASS_HOME:-}/KickAss.jar"
        "${KICKASSEMBLER_HOME:-}/KickAss.jar"
        "$HOME/Applications/KickAssembler/KickAss.jar"
        "$HOME/Applications/KickAssembler/kickass.jar"
        "/Applications/KickAssembler/KickAss.jar"
        "/Applications/KickAssembler/kickass.jar"
        "$HOME/Applications/KickAss/KickAss.jar"
        "/Applications/KickAss/KickAss.jar"
        "/opt/homebrew/share/kickassembler/KickAss.jar"
        "/usr/local/share/kickassembler/KickAss.jar"
        "/opt/kickassembler/KickAss.jar"
        "/usr/share/kickassembler/KickAss.jar"
        "$HOME/.local/share/kickassembler/KickAss.jar"
        "$HOME/kickassembler/KickAss.jar"
        "$HOME/KickAssembler/KickAss.jar"
    )

    _found_kickass_jar=""
    for _jar in "${_kickass_candidates[@]}"; do
        if [ -n "$_jar" ] && [ -f "$_jar" ]; then
            _found_kickass_jar="$_jar"
            break
        fi
    done

    if [ -n "$_found_kickass_jar" ]; then
        _add_to_classpath "$_found_kickass_jar"
        _kickass_dir="$(dirname "$_found_kickass_jar")"
        _add_to_path "$_kickass_dir"
        export KICKASS_HOME="$_kickass_dir"
        export KICKASS_JAR="$_found_kickass_jar"

        if ! command -v kickass >/dev/null 2>&1; then
            kickass() {
                java -jar "$KICKASS_JAR" "$@"
            }
        fi
    fi

    # 2. VICE search locations (macOS and Linux)
    _vice_candidates=(
        "${VICE_HOME:-}/bin"
        "${VICE_HOME:-}"
        "$HOME/Applications/VICE/bin"
        "/Applications/VICE/bin"
        "$HOME/Applications/VICE.app/Contents/Resources/bin"
        "/Applications/VICE.app/Contents/Resources/bin"
        "$HOME/Applications/VICE.app/Contents/MacOS"
        "/Applications/VICE.app/Contents/MacOS"
        "/opt/homebrew/opt/vice/bin"
        "/opt/homebrew/bin"
        "/usr/local/opt/vice/bin"
        "/usr/local/bin"
        "/opt/vice/bin"
        "/usr/bin"
    )

    _found_vice_bin=""
    for _vdir in "${_vice_candidates[@]}"; do
        if [ -n "$_vdir" ] && [ -d "$_vdir" ]; then
            if [ -x "$_vdir/x64sc" ] || [ -x "$_vdir/x64" ] || [ -x "$_vdir/c1541" ] || [ -x "$_vdir/vice" ]; then
                _found_vice_bin="$_vdir"
                break
            elif case "$_vdir" in *VICE*bin*|*vice*bin*) true ;; *) false ;; esac; then
                _found_vice_bin="$_vdir"
                break
            fi
        fi
    done

    if [ -n "$_found_vice_bin" ]; then
        _add_to_path "$_found_vice_bin"
        if [ -z "$VICE_HOME" ]; then
            case "$_found_vice_bin" in
                */bin) export VICE_HOME="$(dirname "$_found_vice_bin")" ;;
                *) export VICE_HOME="$_found_vice_bin" ;;
            esac
        fi
    fi
}
_setup_c64
unset -f _setup_c64 _add_to_path _add_to_classpath