#!/bin/sh
#
# Copyright (C) 2013 Paul Kocialkowski <contact@paulk.fr>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
#

# Variables
SCRIPT=$0
REPLICANT_DIR=$1
RELEASE_DIR=$2

ARGS_COUNT=2
COLOR=1
REPO="/home/replicant/tools/repo"
INFOS="$RELEASE_DIR/infos"

regexp="^\([^ ]*\) commit \([^ ]*\)$"
if [ "$COLOR" = "1" ]
then
	color_start="\033[36m"
	color_end="\033[0m"
else
	color_start=""
	color_end=""
fi

diff_repos () {
	paths=$( cat "$INFOS/git_versions.txt" | while read line
	do
		echo -n "$line" | sed "s/$regexp/\1 /g"
	done )

	dir=$( pwd )

	cd "$REPLICANT_DIR"

	$REPO list | while read git_repo
	do
		path=$( echo "$git_repo" | sed "s/\([^ ]*\) : .*$/\1/g" )
		match=$( echo "$paths" | grep "$path" )
		if [ "$match" = "" ]
		then
			echo "New repository: ""$color_start""$path""$color_end"
			echo ""
		fi
	done

	cd "$dir"

	cat "$INFOS/git_versions.txt" | while read line
	do
		path=$( echo "$line" | sed "s/$regexp/\1/g" )
		commit=$( echo "$line" | sed "s/$regexp/\2/g" )

		if [ "$path" = "" ] || [ "$commit" = "" ]
		then
			break
		fi

		dir=$( pwd )

		cd "$REPLICANT_DIR/$path"
		log=$( git shortlog "$commit..HEAD" )
		if [ "$log" != "" ]
		then
			echo "Updated repository: ""$color_start""$path""$color_end"
			echo "$log"
			echo ""
		fi

		cd "$dir"
	done
}

print_help () {
	echo "$SCRIPT: [REPLICANT_DIR] [RELEASE_DIR]"
}

# Check for the correct number of args
if [ "$#"  -lt "$ARGS_COUNT" ]
then
	print_help
	exit 1
fi

diff_repos