#!/usr/bin/env bash
# Script to partly automate updating this package
# sudo dnf install /usr/bin/rpmbuild /usr/bin/spectool /usr/bin/rpmspec /usr/bin/git /usr/bin/curl /usr/bin/abf

set -x
set -e
set -f
set -u

# try to avoid asking for password in `sudo mount -t tmpfs <...>`
#sudo echo

spec=chromium-browser-stable.spec

old_version="$(rpmspec -q --srpm --qf '%{version}' "$spec")"
latest_version="$(curl -s 'https://omahaproxy.appspot.com/all?os=linux&channel=stable' | sed 1d | cut -d , -f 3)"
[ -n "$latest_version" ]
if [ "$old_version" = "$latest_version" ]; then
	echo "No updates"
	exit 0
fi

# https://stackoverflow.com/a/66636133
latest_commit_chromium_gost="$(curl -s -H "Accept: application/vnd.github.VERSION.sha" "https://api.github.com/repos/deemru/chromium-gost/commits/master")"
[ -n "$latest_commit_chromium_gost" ]

latest_commit_msspi="$(curl -s -H "Accept: application/vnd.github.VERSION.sha" "https://api.github.com/repos/deemru/msspi/commits/master")"
[ -n "$latest_commit_msspi" ]

sed -E -i'' "$spec" \
	-e "s,^Version:.+,Version:\t${latest_version}," \
	-e "s,^Release:.+,Release:\t1," \
	-e "s,^%define chromium_gost_commit .+,%define chromium_gost_commit ${latest_commit_chromium_gost}," \
	-e "s,^%define msspi_commit .+,%define msspi_commit ${latest_commit_msspi}," \
	--

spectool --get-files --source 0,1101,1102 "$spec"

# check appliability of patches
patches_ok=0
# unpack >8 GiB of source code, I do not have so much RAM to store it in tmpfs
tmp="$(mktemp --tmpdir=/var/tmp -d)"
#sudo mount -t tmpfs -o size=30G tmpfs "$tmp"
trap 'if [ "$patches_ok" = 1 ]; then rm -fr "$tmp"; fi' EXIT
sed -i'' .abf.yml -e '/^  chromium-/d' -e '/^  msspi-/d'
abf put -n
# abf put erronously uploads *.json
git checkout master_preferences.json
# store SVG in git
git checkout rosa-logo-for-new-tab-page.svg
git checkout 22x22_chromium.svg 48x48_chromium.svg
sed -i'' .abf.yml -e '/^  master_preferences.json/d' -e '/.svg/d'

# download additional sources
abf fetch
rpmbuild --define "_sourcedir $PWD" --define "_builddir $tmp" -bp "$spec" && patches_ok=1

PAGER='' git diff
# can be copypasted for a commit message
echo "upd: $old_version -> $latest_version"

if [ "$patches_ok" = 0 ]; then
	echo "PATCHES require attention!"
fi