.direnvrc

#
# Python
#
export PYENV_ROOT=${PYENV_ROOT:-$HOME/.pyenv}

# Usage:
#   Add to .envrc file:
#     use python 3.7.5
use_python() {
    # Install pyenv for management of Python versions
    if ! has pyenv; then
        echo "Installing pyenv"
        brew install pyenv
    fi

    # Install the required version of Python if not already installed
    if [[ ! -d $PYENV_ROOT/versions/$1 ]]; then
        echo "Python $1 is not installed; attempting to install"
        CONFIGURE_OPTS="--with-openssl=$(brew --prefix openssl@1.1)" \
            pyenv install -v $1
    fi

    # Load the required version of Python onto the path
    PYTHON_ROOT=$PYENV_ROOT/versions/$1
    load_prefix "$PYTHON_ROOT"

    if [[ -x "$PYTHON_ROOT/bin/python" ]]; then
        # Tell direnv to create/load a virtualenv in the current directory
        layout python "$PYTHON_ROOT/bin/python"
        # Install pip dependencies
        pip3 install virtualenv
    else
        echo "Error: $PYTHON_ROOT/bin/python can't be executed."
        exit
    fi
}

# Alternatively, look for a .python-version file, and use that as the Python version instead
python_version="$(find_up .python-version || true)"
if [[ -f "${python_version}" ]]; then
	echo "python-version=${python_version}"
    watch_file "${python_version}"
    use_python "$(cat ${python_version})"
fi


#
# Java
#

# Usage:
#   Add to .envrc file:
#     use java adopt@1.11.0-6
use_java() {
    # Install jabba for management of Java versions
    if ! has jabba; then
        echo "Installing jabba"
        brew install jabba
    fi
    
    # Install the required version of Java if not already installed
    if [[ "$(jabba link $1)" == "" ]]; then
        echo "Java $1 is not installed; attempting to install"
        jabba install $1
    fi

    # Set JAVA_HOME, and load the required version of Java onto the path
    export JAVA_HOME=$(jabba link $1)/Contents/Home
    echo "JAVA_HOME=$JAVA_HOME"
    load_prefix "$JAVA_HOME"
}

# Alternatively, look for a .jabbarc file, and use that as the Java version instead
jabbarc="$(find_up .jabbarc || true)"
if [[ -f "${jabbarc}" ]]; then
    watch_file "${jabbarc}"
    jabba_version=$(cat ${jabbarc} | grep -v "#" | cut -d " " -f2)
    echo "Using ${jabba_version} declared in ${jabbarc}"
    use_java "${jabba_version}"
fi


#
# NodeJS
#
export NODE_VERSIONS=${NODE_VERSIONS:-$HOME/.node}

# Usage:
#   Add to .envrc file:
#     use node 12.16.3
use_node() {
    # Install the required version of NodeJS if not already installed
    if [[ ! -d $NODE_VERSIONS/$1 ]]; then
        mkdir -p $NODE_VERSIONS/$1
        curl -fsSL http://nodejs.org/dist/v$1/node-v$1-darwin-x64.tar.gz | tar xvz --strip 1 -C $NODE_VERSIONS/$1 2>/dev/null
    fi

    load_prefix $NODE_VERSIONS/$1
}

#
# Ruby
#

# Usage:
#   Add to .envrc file:
#     use ruby 2.3.3
use_ruby() {
    if ! has ruby-install; then
        echo "Installing ruby-install"
        brew install ruby-install
    fi

	if [[ ! -d $HOME/.rubies/ruby-$1 ]]; then
        echo "Ruby $1 is not installed; attempting to install"
        mkdir -p $NODE_VERSIONS/$1
        ruby-install ruby $1
    fi
  	local ruby_root=$HOME/.rubies/ruby-$1
  	load_prefix "$ruby_root"
  	layout_ruby
}