#!/bin/bash

usage() {
	echo "Usage: git-request-pull-send-email <commit> [branch]"
	exit ${1:-0}
}

auto=false
force=false
eval set -- `getopt -- efh "$@"`
while [[ -n $1 ]] ; do
	case $1 in
		-h|--help) usage;;
		-e) auto=true;;
		-f) force=true;;
		--) shift; break;;
		-*) usage 1;;
		*)  break;
	esac
	shift
done

commit=${1:-mainline/master}
url=$(git config --get remote.pullrequest.url || git config --get remote.origin.url)
branch=${2:-master}
if [[ ${branch} != master ]] ; then
	subject=" (${branch} branch)"
else
	subject=""
fi

if [[ -z ${commit} ]] || [[ -n $3 ]] ; then
	usage 1
fi

name=$(git config --get user.name)
email=$(git config --get user.email)
tmp=$(mktemp)
if ! request=$(PAGER= git request-pull ${commit} ${url} ${branch}) ; then
	${force} || exit 1
	request=$(echo "${request}" | sed "s:..BRANCH.NOT.VERIFIED..:${branch}:")
fi
cat << EOF > ${tmp}
From: ${name} <${email}>
Date: $(date -R)
Subject: Pull request ${url##*/}${subject}

${request}
EOF
cat ${tmp}

to=$(git config --get sendemail.pullrequest)
cc=$(git config --get sendemail.to || git config --get sendemail.pullrequestcc)
if ${auto} ; then
	git send-email --to "${to}" --cc "${cc}" ${tmp}
else
	echo git send-email --to \"${to}\" --cc \"${cc}\" ... 1>&2
fi
rm -f ${tmp}