#!/bin/bash
#
# .---.                  .              .
# |                      |              |
# |--- .--. .-.  .-.  .-.|  .-. .--.--. |.-.  .-. .--.  .-.
# |    |   (.-' (.-' (   | (   )|  |  | |   )(   )|  | (.-'
# '    '     --'  --'  -' -  -' '  '   -' -'   -' '   -  --'
#
#                    Freedom in the Cloud
#
# Functions to set repositories
#
# 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/>.

# The Debian package repository to use.
DEBIAN_REPO="ftp.us.debian.org"

# password used for accessing your repo mirrors
MY_MIRRORS_PASSWORD=
# friend's repo mirrors
FRIENDS_MIRRORS_PASSWORD=
FRIENDS_MIRRORS_SERVER=
FRIENDS_MIRRORS_SSH_PORT=2222

function create_repo_sources {
	if grep -Fxq "create_repo_sources" $COMPLETION_FILE; then
		return
	fi
	rm -rf /var/lib/apt/lists/*
	apt-get clean

	echo "deb http://${DEBIAN_REPO}/debian/ ${DEBIAN_VERSION} main" > /etc/apt/sources.list
	echo "deb-src http://${DEBIAN_REPO}/debian/ ${DEBIAN_VERSION} main" >> /etc/apt/sources.list
	echo '' >> /etc/apt/sources.list
	echo "deb http://security.debian.org/ ${DEBIAN_VERSION}/updates main" >> /etc/apt/sources.list
	echo "deb-src http://security.debian.org/ ${DEBIAN_VERSION}/updates main" >> /etc/apt/sources.list
	echo '' >> /etc/apt/sources.list
	echo "deb http://${DEBIAN_REPO}/debian/ ${DEBIAN_VERSION}-updates main" >> /etc/apt/sources.list
	echo "deb-src http://${DEBIAN_REPO}/debian/ ${DEBIAN_VERSION}-updates main" >> /etc/apt/sources.list
	echo '' >> /etc/apt/sources.list
	echo "deb http://${DEBIAN_REPO}/debian/ ${DEBIAN_VERSION}-backports main" >> /etc/apt/sources.list
	echo "deb-src http://${DEBIAN_REPO}/debian/ ${DEBIAN_VERSION}-backports main" >> /etc/apt/sources.list

	apt-get update
	apt-get -y install apt-transport-https

	echo 'create_repo_sources' >> $COMPLETION_FILE
}

function read_repo_servers {
	if [ -f $CONFIGURATION_FILE ]; then
		if grep -q "FRIENDS_MIRRORS_SERVER" $CONFIGURATION_FILE; then
			FRIENDS_MIRRORS_SERVER=$(grep "FRIENDS_MIRRORS_SERVER" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
		fi
		if grep -q "FRIENDS_MIRRORS_SSH_PORT" $CONFIGURATION_FILE; then
			FRIENDS_MIRRORS_SSH_PORT=$(grep "FRIENDS_MIRRORS_SSH_PORT" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
		fi
		if grep -q "MY_MIRRORS_PASSWORD" $CONFIGURATION_FILE; then
			MY_MIRRORS_PASSWORD=$(grep "MY_MIRRORS_PASSWORD" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
		fi
		if grep -q "FRIENDS_MIRRORS_PASSWORD" $CONFIGURATION_FILE; then
			FRIENDS_MIRRORS_PASSWORD=$(grep "FRIENDS_MIRRORS_PASSWORD" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
		fi
	fi

	if [ ! $FRIENDS_MIRRORS_SERVER ]; then
		return
	fi
	if [ ${#FRIENDS_MIRRORS_SERVER} -lt 2 ]; then
		return
	fi

	MAIN_COMMAND=/usr/local/bin/${PROJECT_NAME}
	if [ ! -f $MAIN_COMMAND ]; then
		MAIN_COMMAND=/usr/bin/${PROJECT_NAME}
	fi

	REPOS=($(cat ${MAIN_COMMAND} | grep "_REPO=\"" | uniq -u | sed 's|${PROJECT_NAME}|'"${PROJECT_NAME}"'|g'))

	for line in "${REPOS[@]}"
	do
		repo_name=$(echo "$line" | awk -F '=' '{print $1}')
		mirrors_name=$(echo "$repo_name" | sed "s|_REPO||g" | awk '{print tolower($0)}')
		friends_repo_url="ssh://mirrors@${FRIENDS_MIRRORS_SERVER}:${FRIENDS_MIRRORS_SSH_PORT}/home/mirrors/${mirrors_name}"
		${repo_name}="${friends_repo_url}"
	done
}

# A command to create a git repository for a project
function create_git_project {
	if grep -Fxq "create_git_project" $COMPLETION_FILE; then
		return
	fi
	apt-get -y install git

	echo '#!/bin/bash' > /usr/bin/$CREATE_GIT_PROJECT_COMMAND
	echo '' >> /usr/bin/$CREATE_GIT_PROJECT_COMMAND
	echo 'GIT_PROJECT_NAME=$1' >> /usr/bin/$CREATE_GIT_PROJECT_COMMAND
	echo 'if [ ! $GIT_PROJECT_NAME ]; then' >> /usr/bin/$CREATE_GIT_PROJECT_COMMAND
	echo '  echo "Please specify a project name, without any spaces"' >> /usr/bin/$CREATE_GIT_PROJECT_COMMAND
	echo '  exit 1' >> /usr/bin/$CREATE_GIT_PROJECT_COMMAND
	echo 'fi' >> /usr/bin/$CREATE_GIT_PROJECT_COMMAND
	echo '' >> /usr/bin/$CREATE_GIT_PROJECT_COMMAND
	echo 'if [ ! -d /home/$USER/projects/$GIT_PROJECT_NAME ]; then' >> /usr/bin/$CREATE_GIT_PROJECT_COMMAND
	echo '  mkdir -p /home/$USER/projects/$GIT_PROJECT_NAME' >> /usr/bin/$CREATE_GIT_PROJECT_COMMAND
	echo 'fi' >> /usr/bin/$CREATE_GIT_PROJECT_COMMAND
	echo '' >> /usr/bin/$CREATE_GIT_PROJECT_COMMAND
	echo 'cd /home/$USER/projects/$GIT_PROJECT_NAME' >> /usr/bin/$CREATE_GIT_PROJECT_COMMAND
	echo 'git init --bare' >> /usr/bin/$CREATE_GIT_PROJECT_COMMAND
	echo '' >> /usr/bin/$CREATE_GIT_PROJECT_COMMAND
	echo -n 'echo "Your project has been created, ' >> /usr/bin/$CREATE_GIT_PROJECT_COMMAND
	echo 'use the following command to clone the repository"' >> /usr/bin/$CREATE_GIT_PROJECT_COMMAND
	echo -n "  git clone ssh://$MY_USERNAME@$DEFAULT_DOMAIN_NAME:$SSH_PORT" >> /usr/bin/$CREATE_GIT_PROJECT_COMMAND
	echo '/home/$USER/projects/$GIT_PROJECT_NAME' >> /usr/bin/$CREATE_GIT_PROJECT_COMMAND
	echo '' >> /usr/bin/$CREATE_GIT_PROJECT_COMMAND
	echo 'exit 0' >> /usr/bin/$CREATE_GIT_PROJECT_COMMAND
	chmod +x /usr/bin/$CREATE_GIT_PROJECT_COMMAND

	echo 'create_git_project' >> $COMPLETION_FILE
}

function create_mirrors {
	if [ -d /home/trove ]; then
		userdel -r trove
	fi
	if grep -Fxq "create_mirrors" $COMPLETION_FILE; then
		return
	fi
	${PROJECT_NAME}-mirrors
	echo 'create_mirrors' >> $COMPLETION_FILE
}

# NOTE: deliberately no exit 0