#!/bin/bash

#. patchfns 2>/dev/null ||
#. /usr/lib/patch-scripts/patchfns 2>/dev/null ||
#. $PATCHSCRIPTS_LIBDIR/patchfns 2>/dev/null ||
#{
#	echo "Impossible to find my library 'patchfns'."
#	echo "Check your install, or go to the right directory"
#	exit 1
#}

EMAIL_ADDRESS='<gregkh@suse.de>'

extract_addr()
{
	read l
	read l
	read l
	read l
	a=$(echo "$l" | sed -n -e 's/.*<\(.*@[^>]*\).*/\1/p')
	echo $a
}

if [ x"$SMTP_SERVER" = x ]
then
	SMTP_SERVER=localhost:25
fi

if [ x"$EMAIL_ADDRESS" = x ]
then
	echo "You must set the EMAIL_ADDRESS environment variable to your email address"
	exit 1
fi
FROM=$EMAIL_ADDRESS

TO=""
CC=""

author()
{
        first_author=""
        TXT=$2
        if [ ! -f $TXT ]
        then
                echo $TXT is missing
                exit 1
        fi
        author=""
        while read l
        do
		# skip the Message-ID: line so we don't send email to the wrong place
		echo $l
		reply=$(echo "$l" | grep -i Message-ID:)
		if [ x"$reply" != x ]
		then
			continue
		fi

		# if this is the start of the diff, then it's time to stop looking
		diff=$(echo "$l" | grep "^---")
		if [ x"$diff" != x ]
		then
			echo "diffstart!!!!!"
			break
		fi

                for x in $l
                do
                        a=$(echo "$x" | sed -n -e 's/.*<\(.*@[^>]*\).*/\1/p')
                        if [ x"$a" != x ]
                        then
                                if [ x"$author" == x ]
                                then
                                        author=$a
                                        first_author=$a
                                else
                                        author="$author $a"
                                fi
                        fi
                done
        done < $TXT
        author=$(echo $author | tr ' ' '\n' | grep -v "$first_author" |
                sort | uniq)
        author="$first_author $author"
        eval $1=$(echo $author | sed -e 's/ /,/g')
        if [ x"$3" != x ]
        then
                eval $3=$first_author
        fi
}



reply()
{
	PATCH=$1
#	patch_name=$(stripit $1)
#	PATCH=$P/patches/$patch_name.patch
#	TXT=$P/txt/$patch_name.txt
#	if [ ! -f $TXT ]
#	then
#		echo $TXT is missing
#		exit 1
#	fi
	echo "PATCH=$PATCH"
	SUBJECT=`grep "Subject:" $PATCH`
#	SUBJECT=$(head -n 2 $PATCH | tail -n 1)
	MESSAGE_ID=`grep -i "^Message-ID:" $PATCH | cut -f 2 -d ' ' | cut -f 2 -d '<' | cut -f 1 -d '>'`
	author AUTHOR $1 FIRST_AUTHOR
	echo author said $AUTHOR
	echo first_author said $FIRST_AUTHOR
	if [ x"$AUTHOR" == "x" ]
	then
		echo nobody to notify
		exit 0
	fi
	to=""
	for i in $(echo $AUTHOR | sed -e 's/,/ /g')
	do
		if ! echo "$TO" | grep "$i"
		then
			to=$to" -to $i"
		fi
	done
	if [ x"$cc" != x ]
	then
		cc="-cc $cc"
	fi

	echo makemail -to $AUTHOR -from=$FROM -subject="patch $PATCH added to gregkh tree" -date="$(date -R)" -reply_to=$MESSAGE_ID
	echo smtpsend -server=$SMTP_SERVER $to -from=$FROM


	(
		echo
		echo -n "This is a note to let you know that I've just added "
		echo "the patch titled"
		echo
		echo "    " $SUBJECT
		echo
		echo "to my gregkh-2.6 tree.  Its filename is"
		echo
		echo "    " $PATCH
		echo
		echo "This tree can be found at "
		echo "    http://www.kernel.org/pub/linux/kernel/people/gregkh/gregkh-2.6/patches/"
		echo
		echo
		cat $PATCH
		echo
		echo
		echo -n "Patches currently in gregkh-2.6 which might be from "
		echo "$FIRST_AUTHOR are"
		echo
		grep -lR $FIRST_AUTHOR /home/greg/linux/patches/ 2> /dev/null |
			sed -e 's/\/home\/greg\/linux\/patches\///'
	) |
	makemail -to $AUTHOR -from=$FROM \
		-subject="patch $PATCH added to gregkh-2.6 tree" \
		-date="$(date -R)" \
		-reply_to="$MESSAGE_ID" | \
	# talk to the suse network instead of localhost (due to the way suse.de now handles email...)
	# smtpsend -server=$SMTP_SERVER $to -from=$FROM
	msmtp $to
}

for patch_file in $*
do
	reply $patch_file
	echo "acknowledged $patch_file"
	echo "-----------------------------------------------"
	echo
done