#!/usr/bin/env nix-shell
#!nix-shell -i bash -p gnused
# usage: install-iwd <source_dir> <dest_dir>
# source_dir contains plain-text .psk files of any filename.
# for each file, this extracts the SSID and creates a symlink in dest_dir which
# points to the original file, using the SSID name as filename.
#
# this is because iwd extracts the SSID from the filename, but users might
# prefer the SSID be kept separate from the filename.

src_dir="$1"
dest_dir="$2"
for f in $(ls "$src_dir")
do
        if [ -f "$src_dir/$f" ]; then
                ssid=$(sed -rn 's/# SSID=(.*)/\1/p' "$src_dir/$f")
                # not sure that iwd can deal with un-writeable symlinks
                # ln -sf "$src_dir/$f" "$dest_dir/$ssid.psk"
                cp "$src_dir/$f" "$dest_dir/$ssid.psk"
                # not strictly necessary, but iwd does default to rw
                chmod 600 "$dest_dir/$ssid.psk"
        fi
done