#!/usr/bin/env bash
set -euo pipefail
cd "$(dirname "$0")/.."

test_name="dependency-cache-test-$$"
site_directory="${UCE_TEST_SITE_DIRECTORY:-site}"
source_dir="$site_directory/$test_name"
bin_directory="${BIN_DIRECTORY:-}"
if [[ -z "$bin_directory" && -r /etc/uce/settings.cfg ]]; then
	bin_directory=$(awk -F= '/^[[:space:]]*BIN_DIRECTORY[[:space:]]*=/ {gsub(/^[[:space:]]+|[[:space:]]+$/, "", $2); print $2; exit}' /etc/uce/settings.cfg)
fi
bin_directory="${bin_directory:-/tmp/uce/work}"
cache_dir=""

cleanup() {
	rm -rf "$source_dir"
	if [[ -n "$cache_dir" ]]; then
		rm -rf "$cache_dir"
	fi
}
trap cleanup EXIT
mkdir -p "$source_dir"
cache_dir="$bin_directory$(realpath "$source_dir")"

printf '%s\n' \
	'#ifndef UCE_DEPENDENCY_CACHE_CHILD' \
	'#define UCE_DEPENDENCY_CACHE_CHILD' \
	'String dependency_cache_marker() { return("dependency-marker-a"); }' \
	'#endif' >"$source_dir/child.uce"
printf '%s\n' \
	'#load "child.uce"' \
	'CLI(Request& context) { print(dependency_cache_marker()); }' \
	'RENDER(Request& context) { print(dependency_cache_marker()); }' >"$source_dir/parent.uce"

first=$(scripts/uce-cli "/$test_name/parent.uce")
if [[ "$first" != *dependency-marker-a* ]]; then
	echo "dependency invalidation setup failed: $first" >&2
	exit 1
fi

sed -i 's/dependency-marker-a/dependency-marker-b/' "$source_dir/child.uce"
second=$(scripts/uce-cli "/$test_name/parent.uce")
if [[ "$second" != *dependency-marker-b* ]]; then
	echo "loaded dependency change did not recompile parent: $second" >&2
	exit 1
fi

echo "dependency invalidation passed"