#!/bin/sh

if [ "${NGX_HTTP}" = 0 ] ; then
	unset NGX_HTTP_NO_PROXY NGX_HTTP_WITH_MODSECURITY
else
	NGX_HTTP_NO_PROXY=$(gobool_to_int "${NGX_HTTP_NO_PROXY:-0}" 0)
	if [ "${NGX_HTTP_NO_PROXY}" = 0 ] ; then
		NGX_HTTP_CONFLOAD=$(append_list "${NGX_HTTP_CONFLOAD}" proxy)
	fi

	unset http_modules http_confload
	http_modules=
	http_confload="${NGX_HTTP_CONFLOAD:-}"

	if [ -n "${NGX_HTTP_MODULES}" ] ; then
		## angie-module-lua: depends on angie-module-ndk
		## angie-module-set-misc: depends on angie-module-ndk

		# unset want_ndk
		# want_ndk=0
		# if list_have_item "${NGX_HTTP_MODULES}" lua ; then
		# 	want_ndk=1
		# elif list_have_item "${NGX_HTTP_MODULES}" set-misc ; then
		# 	want_ndk=1
		# fi
		# if [ ${want_ndk} = 1 ] ; then
		# 	NGX_HTTP_MODULES=$(prepend_list "${NGX_HTTP_MODULES}" ndk)
		# fi
		# unset want_ndk
		NGX_HTTP_MODULES=$(
			printf '%s' "${NGX_HTTP_MODULES}" \
			| sed -zE 's/(\s|^)(lua|set-misc)(\s|$)/\1ndk \2\3/g'
		)
	fi

	## filter out builtin http modules
	unset i
	for i in ${NGX_HTTP_MODULES:-} ; do
		[ -n "$i" ] || continue

		case "$i" in
		*/* | *\** | *\?* )
			log_always "module '$i' is not legal, skipping"
			continue
		;;
		esac

		if is_builtin_module http "$i" ; then
			log "$i is builtin module, moving to NGX_HTTP_CONFLOAD"
			http_confload=$(append_list "${http_confload}" "$i")
			continue
		fi

		## naive deduplication
		if list_have_item "${http_modules}" "$i" ; then
			log "$i is already specified"
			continue
		fi

		http_modules=$(append_list "${http_modules}" "$i")
	done
	unset i

	## grpc depends on http/2
	if list_have_item "${NGX_HTTP_CONFLOAD}" grpc ; then
		unset want_http2
		want_http2=0
		if ! list_have_item "${NGX_HTTP_CONFLOAD}" v2 ; then
			want_http2=1
		fi
		if [ "${want_http2}" = 1 ] ; then
			NGX_HTTP_CONFLOAD=$(append_list "${NGX_HTTP_CONFLOAD}" v2)
		fi
		unset want_http2
	fi

	set -a
	NGX_HTTP_MODULES="${http_modules}"
	NGX_HTTP_CONFLOAD=$(sort_dedup_list "${http_confload}")
	set +a

	unset http_modules http_confload

	## quirk: angie-module-modsecurity
	unset NGX_HTTP_WITH_MODSECURITY
	NGX_HTTP_WITH_MODSECURITY=0
	while : ; do
		if ! list_have_item "${NGX_HTTP_MODULES}" modsecurity ; then
			break
		fi

		for d in /angie/modules /etc/angie/modules /etc/angie/modules.dist ; do
			[ -d "$d" ] || continue
			[ -f "$d/ngx_http_modsecurity_module.so" ] || continue
			if ! [ -h "$d/ngx_http_modsecurity_module.so" ] ; then
				NGX_HTTP_WITH_MODSECURITY=1
				break
			fi
		done ; unset d
	break ; done
	export NGX_HTTP_WITH_MODSECURITY

	if [ "${NGX_HTTP_WITH_MODSECURITY}" = 1 ] ; then
		set -a
		NGX_DIRS_MERGE=$(sort_dedup_list "${NGX_DIRS_MERGE} modsecurity")
		set +a
	fi
fi