#!/bin/bash
#
# .---.                  .              .
# |                      |              |
# |--- .--. .-.  .-.  .-.|  .-. .--.--. |.-.  .-. .--.  .-.
# |    |   (.-' (.-' (   | (   )|  |  | |   )(   )|  | (.-'
# '    '     --'  --'  -' -  -' '  '   -' -'   -' '   -  --'
#
#                    Freedom in the Cloud
#
# Useful git functions
#
# License
# =======
#
# Copyright (C) 2014-2016 Bob Mottram <bob@robotics.uk.to>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero 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 Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

function git_clone {
	repo_url="$1"
	destination_dir="$2"

	if [[ "$repo_url" == "ssh:"* ]]; then
		retval=$(get_friends_servers)
		if [[ $retval == "0" ]]; then
			if [ "${FRIENDS_MIRRORS_SERVER}" ]; then
				if [ ${#FRIENDS_MIRRORS_SERVER} -gt 2 ]; then
					if [ "$FRIENDS_MIRRORS_PASSWORD" ]; then
						if [ ${#FRIENDS_MIRRORS_PASSWORD} -gt 2 ]; then
							echo "sshpass -p \"$FRIENDS_MIRRORS_PASSWORD\" git clone $repo_url $destination_dir"
							sshpass -p "$FRIENDS_MIRRORS_PASSWORD" git clone "$repo_url" "$destination_dir"
							return
						fi
					fi
				fi
			fi
		fi
	fi
	echo "git clone $repo_url $destination_dir"
	git clone "$repo_url" "$destination_dir"
}

function git_pull {
	if [ ! $1 ]; then
		echo $'git_pull no repo specified'
	fi

	git stash
	git remote set-url origin $1
	git checkout master
	retval=$(get_friends_servers)
	if [ "${FRIENDS_MIRRORS_SERVER}" ]; then
		if [ ${#FRIENDS_MIRRORS_SERVER} -gt 2 ]; then
			if [ "$FRIENDS_MIRRORS_PASSWORD" ]; then
				if [ ${#FRIENDS_MIRRORS_PASSWORD} -gt 2 ]; then
					sshpass -p "$FRIENDS_MIRRORS_PASSWORD" git pull
					if [ $2 ]; then
						git checkout $2 -b $2
					fi
					return
				fi
			fi
		fi
	fi
	git pull

	if [ $2 ]; then
		# delete any existing branch
		git branch -D $2
		# check out the new branch
		git checkout $2 -b $2
		if [ ! "$?" = "0" ]; then
			echo $"Unable to checkout $1 $2"
			exit 72357
		fi
	fi
}

# This ensures that a given repo is on a given commit
# If it isn't then it attempts to upgrade
function set_repo_commit {
	repo_dir=$1
	repo_commit_name=$2
	repo_commit=$3
	repo_url=$4
	if [ -d $repo_dir ]; then
		if grep -q "$repo_commit_name" $COMPLETION_FILE; then
			CURRENT_REPO_COMMIT=$(grep "$repo_commit_name" $COMPLETION_FILE | awk -F ':' '{print $2}')
			if [[ "$CURRENT_REPO_COMMIT" != "$repo_commit" ]]; then
				cd $repo_dir
				git_pull $repo_url $repo_commit

				# application specific stuff after updating the repo
				if [[ $repo_dir == *"www"* ]]; then
					chown -R www-data:www-data $repo_dir
				fi
				if [[ $repo_dir == *"cjdns" ]]; then
					./do
				fi
				if [[ $repo_dir == *"tlsdate" ]]; then
					cd $INSTALL_DIR/tlsdate
					make clean
					./configure
					if [ ! "$?" = "0" ]; then
						echo $'Failed to configure tlsdate'
						exit 727824
					fi
					make
					if [ ! "$?" = "0" ]; then
						echo $'Failed to build tlsdate'
						exit 728752
					fi
					make install
				fi
				if [[ $repo_dir == *"gpgit" ]]; then
					cp gpgit.pl /usr/bin/gpgit.pl
				fi
				if [[ $repo_dir == *"cleanup-maildir" ]]; then
					cp $INSTALL_DIR/cleanup-maildir/cleanup-maildir /usr/bin
				fi
				if [[ $repo_dir == *"nginx_ensite" ]]; then
					make install
				fi
				if [[ $repo_dir == *"gogs" ]]; then
					git checkout master
					go get -u ./...
					if [ ! "$?" = "0" ]; then
						echo $'Failed to get gogs'
						exit 52792
					fi
					git checkout $repo_commit
					go build
					if [ ! "$?" = "0" ]; then
						echo $'Failed to build gogs'
						exit 36226
					fi
					systemctl restart gogs
				fi
				if [[ $repo_dir == *"toxcore" ]]; then
					sed -i 's|ExecStart=.*|ExecStart=/usr/local/bin/tox-bootstrapd --config /etc/tox-bootstrapd.conf|g' $rootdir/etc/systemd/system/tox-bootstrapd.service
					autoreconf -i
					./configure --enable-daemon
					make
					make install
					systemctl daemon-reload
					systemctl restart tox-bootstrapd.service
				fi
				if [[ $repo_dir == *"toxic" ]]; then
					make
					make install
				fi
				if [[ $repo_dir == $RSS_READER_PATH ]]; then
					function_check rss_reader_modifications
					rss_reader_modifications
				fi
				if [[ $repo_dir == *"inadyn" ]]; then
					./configure
					USE_OPENSSL=1 make
					make install
					systemctl restart inadyn
				fi
				if [[ $repo_dir == *"ipfs" ]]; then
					chown -R git:git /home/git
					systemctl restart ipfs
					systemctl daemon-reload
				fi

				sed -i "s/${repo_commit_name}.*/${repo_commit_name}:$repo_commit/g" $COMPLETION_FILE
			fi
		else
			echo "${repo_commit_name}:${repo_commit}" >> $COMPLETION_FILE
		fi
	fi
}

# NOTE: deliberately no exit 0
