#!/bin/sh
set -e

SOURCE_DIR=$(realpath $(dirname "${0}"))/setup

# Check prerequisites
[ ! -e /run/openrc/started/postgres ] && service postgres start && STOP_POSTGRES=1

# Create database
export CTS_PWD=$(head -c 18 /dev/urandom | base64)
envsubst <${SOURCE_DIR}/createdb.sql | lxc-attach -u 5432 -g 5432 postgres -- psql

# Copy existing config files into persistent storage
mkdir -p /srv/cts/conf
cp /var/lib/lxc/cts/cts/srv/cts/cts/settings/base.py /srv/cts/conf

# Configure CTS
cp ${SOURCE_DIR}/srv/cts/update-conf.sh /srv/cts/update-conf.sh
export CTS_SECRET=$(head -c 26 /dev/urandom | base64)
envsubst <${SOURCE_DIR}/srv/cts/conf/spotter.py >/srv/cts/conf/spotter.py
touch /srv/cts/conf/__init__.py

# Set "production values" (increases performance) only if the DEBUG environment variable is not set
if [ ${DEBUG:-0} -eq 0 ]; then
    sed -i 's/DEBUG = True/DEBUG = False/' /srv/cts/conf/spotter.py
fi

# Populate database
lxc-execute cts -- manage.py migrate

# Create admin account
export CTS_ADMIN_EMAIL=admin@example.com
export CTS_ADMIN_PWD=$(head -c 12 /dev/urandom | base64)
export CTS_ADMIN_HASH=$(lxc-execute cts -- python -c "from django.contrib.auth.hashers import make_password; print make_password('${CTS_ADMIN_PWD}')")
export CTS_ADMIN_SECRET=$(head -c 12 /dev/urandom | sha256sum | cut -c1-13)
envsubst <${SOURCE_DIR}/adminpwd.sql | lxc-attach -u 5432 -g 5432 postgres -- psql cts
vmmgr update-login cts "${CTS_ADMIN_EMAIL}" "${CTS_ADMIN_PWD}"

# Install service
cp ${SOURCE_DIR}/etc/init.d/cts /etc/init.d/cts
rc-update -u

# Stop services required for setup
[ ! -z ${STOP_POSTGRES} ] && service postgres stop