#!/bin/sh
# Prepare "What's cooking in git.git"

master_at=$(git rev-parse --verify refs/heads/master)
next_at=$(git rev-parse --verify refs/heads/next)

keep_master=
case "$1" in
generate)
	echo Here are the topics that have been
	echo
	Meta/git-topic.perl --base=master | sed -e 's/^\*./\n*/'
	exit
	;;
keep)
	keep_master=--keep-master
	;;
esac

eval $(LC_ALL=C date +"monthname=%b month=%m year=%Y date=%d dow=%a")

lead="whats/cooking/$year/$month"
issue=$(
	cd Meta &&
	git ls-tree -r --name-only HEAD "$lead"  | tail -n 1
)
if test -n "$issue"
then
	issue=$( expr "$issue" : '.*/0*\([1-9][0-9]*\)\.txt$' )
	issue=$(( $issue + 1 ))
else
	issue=1
fi
issue=$( printf "%02d" $issue )
mkdir -p "Meta/$lead"

exec >"Meta/$lead/$issue.txt"

cat <<EOF
To: git@vger.kernel.org
Subject: What's cooking in git.git ($monthname $year, #$issue; $dow, $date)
X-master-at: $master_at
X-next-at: $next_at

What's cooking in git.git ($monthname $year, #$issue; $dow, $date)
--------------------------------------------------

EOF

last=$(
	cd Meta &&
	git ls-tree -r --name-only HEAD "whats/cooking"  | tail -n 1
)

sed -e 's/^\[New Topics\]$/[Old New Topics]/' "Meta/$last" |
Meta/UWC $keep_master