#!/bin/sh

#NOTE: .zshenv XDG paths are hardcoded to allow non-zsh install

: ${DEST:=$(realpath "$HOME")}
: ${SRC:=$(dirname "$(realpath "$0")")}

# test
devnull=/dev/null
if [ "$1" = "test" ]; then
    echo "Running test -- no changes will be applied"
    devnull=/dev/stdout
    _cd() {
        cd $*;
        echo "  cd $*";
        echo "\$PWD=$PWD";
    }
    alias cd="_cd"
    alias mkdir="echo -- mkdir"
    alias ln="echo -- ln"
    alias rm="echo -- rm"
    alias sh="echo -- sh"
fi

# create preferred folder structure
cd $DEST
mkdir -p bin etc share/fonts share/themes share/icons >$devnull 2>&1
command -v vim >$devnull 2>&1 && mkdir -pm 700 var/tmp/vim >$devnull 2>&1
cd $SRC >$devnull

# ensure ostype
if [ -z "$OSTYPE" ]; then
    OSTYPE=$(uname -s | tr '[:upper:]' '[:lower:]')
fi

# accomodate multiple userlands
lnargs=-sfnv
case "$OSTYPE" in
    freebsd*)       lnargs=-sFhv;;
    netbsd|openbsd*)    lnargs=-sfhv;;
esac

l() {
    # TODO: use install?
    d="$DEST/${1:-$x}"
    [ -L "$d" -o \! -e "$d" ] && ln $lnargs "$SRC/${2:-$x}" "$d" ||
      echo "!!! File exists and is not a link: $1"
}

# generic links
find base -mindepth 1 -maxdepth 1 | while read -r x; do l "${x#base/}"; done
find bin etc share -mindepth 1 -maxdepth 1 | while read -r x; do l; done

# xorg/wayland resources
find gui -mindepth 1 -maxdepth 1 | while read -r y; do
    case "${y#gui/}" in
        icons|themes)
            find "$y" -mindepth 1 -maxdepth 2 -type d | while read -r x; do
                [ ! -e "$x/index.theme" ] && continue
                command -v gtk-update-icon-cache >$devnull 2>&1 &&
                  gtk-update-icon-cache -f "$x"
                l "share${y#gui}/$(basename "$x")"
            done
            ;;
        fonts)
            find "$y" -mindepth 1 -maxdepth 2 -type d | while read -r x; do
                command -v mkfontscale >$devnull 2>&1 && mkfontscale "$x"
                command -v mkfontdir >$devnull 2>&1 && mkfontdir "$x"
                [ "$(head -1 "$x/fonts.scale" >$devnull 2>&1)" = 0 ] &&
                  rm "$x/fonts.scale"
                [ "$(head -1 "$x/fonts.dir" >$devnull 2>&1)" = 0 ] &&
                  rm "$x/fonts.dir"
                l "share${y#gui}/$(basename "$x")"
            done
            ;;
        *)
            find "$y" -mindepth 1 -maxdepth 1 | while read -r x; do
                l "share${x#gui}"
            done
            ;;
    esac
done

# gpg
if command -v gpg >$devnull 2>&1; then
    mkdir -p "$DEST/etc/gnupg"
    find gnupg -mindepth 1 -maxdepth 1 \! -name '*.gpg' | while read -r x; do
        l "etc/$x"
    done
    find gnupg -mindepth 1 -maxdepth 1 -name '*.gpg' | while read -r x; do
        gpg --import "$x"
    done
fi

# ssh
find ssh -mindepth 1 -maxdepth 1 | while read -r x; do
  l ".$x"; done

# termux, assume it if android
if [ $(uname -o) = 'Android' ]; then
    mkdir -p "$DEST/.termux"
    find termux -mindepth 1 -maxdepth 1 | while read -r x; do
      l ".$x"; done
    l ".termux/font.ttf" 'share/fonts/Dina-ttf/Dina.ttf'
fi

# vim: sts=4 sw=4 et