#!/bin/sh

set -e
set -x

cd /builds/worker

mkdir a b

# Until https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=879010 is
# implemented, it's better to first manually extract the data.
# Plus dmg files are not supported yet.

# duplicate the functionality of taskcluster-lib-urls, but in bash..
if [ "$TASKCLUSTER_ROOT_URL" = "https://taskcluster.net" ]; then
    queue_base='https://queue.taskcluster.net/v1'
else
    queue_base="$TASKCLUSTER_ROOT_URL/api/queue/v1"
fi

case "$ORIG_URL" in
*/target.zip|*/target.apk)
	curl -sL "$ORIG_URL" > a.zip
	curl -sL "$NEW_URL" > b.zip
	unzip -d a a.zip
	unzip -d b b.zip
	;;
*/target.tar.bz2)
	curl -sL "$ORIG_URL" | tar -C a -jxf -
	curl -sL "$NEW_URL" | tar -C b -jxf -
	;;
*/target.dmg)
	# We don't have mach available to call mach artifact toolchain.
	# This is the trivial equivalent for those toolchains we use here.
	for t in $MOZ_TOOLCHAINS; do
		curl -sL $queue_base/task/${t#*@}/artifacts/${t%@*} | tar -Jxf -
	done
	for tool in lipo otool; do
		ln -s /builds/worker/cctools/bin/x86_64-apple-darwin*-$tool bin/$tool
	done
	export PATH=$PATH:/builds/worker/bin
	curl -sL "$ORIG_URL" > a.dmg
	curl -sL "$NEW_URL" > b.dmg
	for i in a b; do
		dmg/dmg extract $i.dmg $i.hfs
		dmg/hfsplus $i.hfs extractall / $i
	done
	;;
esac

# Builds are 99% of the time differing in some small ways, so it's not
# really useful to report a failure (at least not until we actually
# care about the builds being 100% identical).
diffoscope \
	--html diff.html \
	--text diff.txt \
	--progress \
	$DIFFOSCOPE_ARGS \
	a b || true