#!/usr/bin/bash
# Extracts the handful of static files (changes.txt, resources.json,
# dummy-captcha.png, robots.txt) that live in the `server` repo's own
# `public/` directory out of the currently-pulled `server` image, into
# ./data/public-static, which caddy serves as its fallback root.
#
# This is the single source of truth for these files: they're edited as
# normal server-repo changes and simply ride along with the next deploy of
# that image -- nothing in this repo should ever hand-edit them again.
#
# Run by deploy.sh between `docker compose pull` and `docker compose up`.
# Safe to re-run standalone at any time (e.g. to recover a host where
# ./data/public-static is missing/empty without doing a full deploy).
set -euo pipefail

cd "$(dirname "$0")"

STATIC_FILES=(changes.txt resources.json dummy-captcha.png robots.txt)
DEST=./data/public-static

# Note - we need to update this if the server's image name ever changes
image="atcr.io/tlecommunity.com/server:latest"
echo "==> Extracting static files from ${image}"

mkdir -p "$DEST"

container_id="$(sudo docker create "$image")"
trap 'sudo docker rm -f "$container_id" >/dev/null' EXIT

for file in "${STATIC_FILES[@]}"; do
    sudo docker cp "$container_id:/home/lacuna/server/public/$file" "$DEST/$file"
done

echo "==> Refreshed $DEST: ${STATIC_FILES[*]}"