enable-nixcache

#!/usr/bin/env bash
set -euo pipefail

DIR=$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )

. "$DIR/common-setup.sh"

nixconf="/etc/nix/nix.conf"
our_cache="https://nixcache.reflex-frp.org"
caches_line="binary-caches = https://cache.nixos.org $our_cache"
our_key="JJiAKaRv9mWgpVAz8dwewnZe0AzzEAzPkagE9SP5NWI="
keys_line="binary-cache-public-keys = ryantrinkle.com-1:$our_key cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY="
if [ ! -e "$nixconf" ] || ! grep -q 'binary-caches\|binary-cache-public-keys\|binary-caches-parallel-connections' "$nixconf" ; then
    cat | sudo tee -a "$nixconf" <<EOF
$caches_line
$keys_line
binary-caches-parallel-connections = 40
EOF
elif ! grep -q "$our_cache" "$nixconf" || ! grep -q "$our_key" "$nixconf" ; then
    backup="$nixconf.$(date -u +"%FT%TZ").bak"
    sudo cp "$nixconf" "$backup"
    echo "$nixconf already exists"
    echo "backup saved at $backup"
    echo "adding caches"
    if ! grep -q "$our_cache" "$nixconf" ; then
        sudo sed -i.bak 's|^\(binary-caches[ =].*\)$|\1 '"$our_cache"'|' "$nixconf"
    fi
    if ! grep -q "$our_key" "$nixconf" ; then
        sudo sed -i.bak 's|^\(binary-cache-public-keys[ =].*\)$|\1 ryantrinkle.com-1:'"$our_key"'|' "$nixconf"
    fi
fi