#!/usr/bin/env bash

if [ -z "${VALIDATE_UPSTREAM:-}" ]; then
	# this is kind of an expensive check, so let's not do this twice if we
	# are running more than one validate bundlescript

	VALIDATE_REPO='https://github.com/containous/traefik.git'
	## FIXME wrong assumption
	VALIDATE_BRANCH='master'

	VALIDATE_HEAD="$(git rev-parse --verify HEAD)"

	git fetch -q "$VALIDATE_REPO" "refs/heads/$VALIDATE_BRANCH"
	VALIDATE_UPSTREAM="$(git rev-parse --verify FETCH_HEAD)"

	VALIDATE_COMMIT_LOG="$VALIDATE_UPSTREAM..$VALIDATE_HEAD"
	VALIDATE_COMMIT_DIFF="$VALIDATE_UPSTREAM...$VALIDATE_HEAD"

	validate_diff() {
		if [ "$VALIDATE_UPSTREAM" != "$VALIDATE_HEAD" ]; then
			git diff "$VALIDATE_COMMIT_DIFF" "$@"
		fi
	}
fi