#!/bin/bash

if [[ "$SHELL" != *zsh ]]; then
    case "$OSTYPE" in
        darwin*)
            brew install zsh fasd

            # Add homebrewed zsh to /etc/shells
            if ! grep '/usr/local/bin/zsh' /etc/shells >/dev/null; then
                sudo tee -a /etc/shells <<< "/usr/local/bin/zsh"
            fi

            # Don't mess with my PATH!
            sudo mv /etc/zprofile /etc/zprofile.disabled
            ;;
        linux*)
            if [[ -f /etc/arch-release ]]; then
                sudo pacman --needed --noconfirm -S zsh fasd
            elif [[ -f /etc/debian_version ]]; then
                sudo add-apt-repository ppa:aacebedo/fasd
                sudo apt-get update
                sudo apt-get install -y zsh fasd
            fi
            ;;
    esac

    sudo chsh -s $(which zsh) $(whoami)
fi