#!/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_neovim {
    nvim="${HOME}/bin/nvim"

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

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

    version=${1:-nightly}
    echo "Installing nvim ${version}..."
    nvimurl="https://github.com/neovim/neovim/releases/download/${version}/nvim-linux-x86_64.appimage"
    mkdir -p "$(dirname "$nvim")"
    if [ -e ${nvim} ]; then
	rm "$nvim"
    fi
    curl -fL "$nvimurl" -o "$nvim"
    chmod u+x "$nvim"
}

install_neovim ${1}