setup

#!/bin/sh

SELF=$(realpath "$0")
DOTFILES=$(dirname "$SELF")

DEBUG=
FORCE=

debug () { test -n "$DEBUG" && echo "[D] $*"; }
warn () { echo "[W] $*"; }

abspath () {
    if [ "${2#/}" = "$2" ]; then
        echo "$1/$2"
    else
        echo "$2"
    fi
}

do_install () {
    SRC=$(abspath "$DOTFILES" "$1")
    DST=$(abspath "$HOME" "$2")

    debug "Installing $SRC to ~${DST##"$HOME"}"

    if [ -L "$DST" ] || [ -e "$DST" ]; then
        warn "Target file ~${DST##"$HOME"} already exists"
        test -z "$FORCE" && return
        rm -f "$DST"
    fi

    DESTDIR=$(dirname "$DST")
    test -d "$DESTDIR" || mkdir -p "$DESTDIR"
    ln -sf "$SRC" "$DST"
}

while [ $# -gt 0 ]; do
    case $1 in
    -f|--force)
        FORCE=1
        ;;
    -v|--verbose)
        DEBUG=1
        ;;
    *)
        warn "Unknown argument: $1"
        ;;
    esac
    shift
done

debug "Running from $DOTFILES"

XDG_CONFIG_HOME=${XDG_CONFIG_HOME:-$HOME/.config}
mkdir -p "$XDG_CONFIG_HOME"

do_install tmux.conf .tmux.conf
do_install zprofile  .zprofile
do_install zshrc     .zshrc

# VIM/Neovim
if [ ! -f ~/.vim/autoload/plug.vim ]; then
    curl -fLo ~/.vim/autoload/plug.vim --create-dirs \
        https://raw.githubusercontent.com/junegunn/vim-plug/master/plug.vim
fi
do_install vimrc .vimrc
do_install vimrc .vim/init.vim
ln -sf ~/.vim "$XDG_CONFIG_HOME/nvim"