#!/bin/bash

function yes_or_no {
    while true; do
        read -p "$* [y/n]: " yn
        case $yn in
            [Yy]*) return 0 ;;  
            [Nn]*) return 1 ;;
        esac
    done
}

function install_lein {
    lein="${HOME}/bin/lein"

    if [ -e ${lein} ]; then
        lein -v
        yes_or_no "lein is already installed, do you want to overwrite the existing installation?"
    fi

    if [ $? -ne 0 ]; then
        echo "Aborting install of lein."
        return 0
    fi

    echo "Installing lein..."
    curl httpis://raw.githubusercontent.com/technomancy/leiningen/stable/bin/lein -o "$lein"
    chmod u+x "$lein"
}

install_lein