#!/bin/sh
set -ev

cd $(realpath $(dirname "${0}"))/install

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

# Create PostgreSQL user and database
export PANDORA_PWD=$(head -c 18 /dev/urandom | base64 | tr -d '+/=')
envsubst <createdb.sql | lxc-attach -u 5432 -g 5432 postgres -- psql

# Configure RabbitMQ
export PANDORA_RABBIT_PWD=$(head -c 18 /dev/urandom | base64 | tr -d '+/=')
lxc-attach rabbitmq -- rabbitmqctl add_user pandora ${PANDORA_RABBIT_PWD}
lxc-attach rabbitmq -- rabbitmqctl add_vhost /pandora
lxc-attach rabbitmq -- rabbitmqctl set_permissions -p /pandora pandora ".*" ".*" ".*"

# Configure Pandora
mkdir -p /srv/pandora/conf /srv/pandora/data
chown 8002:8002 /srv/pandora/data
# Copy customized configuration if VANILLA environment variable is not set, else use the default pandora config
if [ ${VANILLA:-0} -eq 0 ]; then
    cp srv/pandora/conf/config.jsonc /srv/pandora/conf
else
    chown 8002:8002 /srv/pandora/conf
    cp /var/lib/lxc/pandora/pandora/srv/pandora/pandora/config.pandora.jsonc /srv/pandora/conf/config.jsonc
fi
cp srv/pandora/conf/gunicorn_config.py /srv/pandora/conf/gunicorn_config.py
envsubst <srv/pandora/conf/local_settings.py >/srv/pandora/conf/local_settings.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/pandora/conf/local_settings.py
fi

# Populate database
lxc-execute pandora -- /srv/pandora/pandora/manage.py migrate --noinput
lxc-execute pandora -- /srv/pandora/pandora/manage.py sqlfindindex
lxc-execute pandora -- /srv/pandora/pandora/manage.py sync_itemsort
lxc-execute pandora -- /srv/pandora/pandora/manage.py sync_documentsort

# Create admin account
export PANDORA_ADMIN_USER=admin
export PANDORA_ADMIN_EMAIL=admin@example.com
export PANDORA_ADMIN_PWD=$(head -c 12 /dev/urandom | base64 | tr -d '+/=')
export PANDORA_ADMIN_HASH=$(lxc-execute pandora -- sh -c "DJANGO_SETTINGS_MODULE=srv.pandora.pandora.settings python3 -c \"from django.contrib.auth.hashers import make_password; print(make_password('${PANDORA_ADMIN_PWD}'))\"")
envsubst <adminpwd.sql | lxc-attach -u 5432 -g 5432 postgres -- psql pandora

# Install service
cp etc/init.d/pandora /etc/init.d/pandora
rc-update -u

# Install config update script
cp srv/pandora/update-conf.sh /srv/pandora/update-conf.sh

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

# Register application
vmmgr register-app pandora pandora "${PANDORA_ADMIN_USER}" "${PANDORA_ADMIN_PWD}"