#!/bin/sh
set -e

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

# Check prerequisites
lxc-ls | grep -q postgres || $(realpath $(dirname "${0}"))/postgres.sh
service postgres start

# Build Docker container
docker build -t cts ${SOURCE_DIR}
cp ${SOURCE_DIR}/etc/init.d/cts /etc/init.d/cts
rc-update -u

# Create database
export CTS_PWD=$(head -c 18 /dev/urandom | base64)
envsubst <${SOURCE_DIR}/createdb.sql | docker exec -i postgres psql

# Copy existing config files into persistent storage
mkdir -p /srv/cts/conf
docker run --rm -v /srv/cts/conf:/mnt/conf cts cp /srv/cts/cts/settings/base.py /mnt/conf/

# Configure CTS
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
docker run --rm -h cts --link postgres -v /srv/cts/conf:/srv/cts/cts/settings cts manage.py migrate

# Create admin account
export CTS_ADMIN_EMAIL=admin@example.com
export CTS_ADMIN_PWD=$(head -c 12 /dev/urandom | base64)
export CTS_ADMIN_HASH=$(docker run --rm -h cts -v /srv/cts/conf:/srv/cts/cts/settings 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 <${SOURCE_DIR}/adminpwd.sql | docker exec -i postgres psql cts
vmmgr update-login cts "${CTS_ADMIN_EMAIL}" "${CTS_ADMIN_PWD}"

# Stop services required for build
service postgres stop