#!/bin/bash
# allows you to send pull requests from the command line
# usage: git req username [comparetobranch]
#    or: git req username -m 'message'
# put somewhere in your PATH as git-req and make executable

usage()
{
cat << EOF
usage: $0 options

Sends a pull request via github

OPTIONS:
-h Show this message
-f Force a pull request
EOF
}

FORCE=

while getopts "hf" OPTION
do
case $OPTION in
        h) usage; exit;;
        f) FORCE=1;;
    esac
done
shift $(($OPTIND - 1))

GITUNCOMMITTED=$(git status | sed -n 2p) && GITUNCOMMITTED=${GITUNCOMMITTED:0:7}
if [ "$GITUNCOMMITTED" != 'nothing' ]
then
    echo -ne 'Error: Woah, woah, woah. There are uncommitted changes!\n'
    exit $?
fi
GITBRANCH=$(git symbolic-ref HEAD | cut -d/ -f3)
GITUNPUSHED=$(git log origin/$GITBRANCH..$GITBRANCH --pretty=oneline --abbrev-commit)
if [ "$GITUNPUSHED" != '' ]
then
    echo -ne 'Error: Push your changes!\n'
    exit $?
fi
GITUSER=$(git config github.user)
GITPROJECT=$(grep 'url =' .git/config | sed -n 1p | sed -e 's/.*url = git@github.com:'$GITUSER'.*[/]\(.*\).git$/\1/')
GITTOKEN=$(git config github.token)
if [ $(echo "${#2}") != '0' ]
then
	if [ "$2" != '-m' ]
	then
		GITCOMPR="http://github.com/$GITUSER/$GITPROJECT/compare/$2...$GITBRANCH"
	else
		GITCOMPR=$3
	fi
else
	GITCOMPR=''
fi
GITPULLREQ=$(curl -Flogin=$GITUSER -Ftoken=$GITTOKEN -Fmessage[to][]=$1 -Fmessage[body]="$GITCOMPR" "http://github.com/$GITUSER/$GITPROJECT/pull_request/$GITBRANCH" 2> /dev/null | sed -e 's/.*You are.*/OK/')
if [ $GITPULLREQ != 'OK' ]
then
	echo -ne 'Could not complete pull request.\n'
else
	echo -ne 'Pull request sent to '$1'.\n'
fi