#!/bin/sh
# check that the implementation and documentation haven't diverged
set -eu

# TODO help message
tmpdir=$1
mkdir -p "$tmpdir"

NO_COMMENTS="xmlstarlet --quiet canonic --without-comments"
ALL_GOOD=true
for doc_xml in org.opensuse.Agama*.doc.xml; do
	IFACE="${doc_xml%.doc.xml}"
	bus_xml=bus/$IFACE.bus.xml
	doc_iface="$tmpdir"/$IFACE.doc.iface.xml
	bus_iface="$tmpdir"/$IFACE.bus.iface.xml
	
	echo "Diffing $IFACE"
	
	${NO_COMMENTS} \
	  "$doc_xml" \
	  > "$doc_iface"

	xmlstarlet ed \
      -d "//interface[@name!='$IFACE']" \
      "$bus_xml" \
      | ${NO_COMMENTS} - \
	  > "$bus_iface"

	# using ALL_GOOD means show diffs for all interfaces, not only the first one
	diff --ignore-blank-lines --ignore-trailing-space -u "$doc_iface" "$bus_iface" || ALL_GOOD=false
done

if $ALL_GOOD; then
	echo "NO DIFF, YAY"
else
	echo "error: In the above diff, ignore the whitespace changes."
	echo "error: Observe the API changes and make sure they are documented in *.doc.xml"
	# fail the check
	false
fi