#!/usr/bin/env bash

set -e
AUTOWIZARD_JSON="${AUTOWIZARD_JSON:-}"
ELASTICSEARCH_ENABLED="${ELASTICSEARCH_ENABLED:-true}"
ELASTICSEARCH_HOST="${ELASTICSEARCH_HOST:-zammad-elasticsearch}"
ELASTICSEARCH_PORT="${ELASTICSEARCH_PORT:-9200}"
ELASTICSEARCH_SCHEMA="${ELASTICSEARCH_SCHEMA:-http}"
ELASTICSEARCH_NAMESPACE="${ELASTICSEARCH_NAMESPACE:-zammad}"
ELASTICSEARCH_REINDEX="${ELASTICSEARCH_REINDEX:-true}"
ELASTICSEARCH_SSL_VERIFY="${ELASTICSEARCH_SSL_VERIFY:-true}"
MEMCACHED_ENABLED="${MEMCACHED_DISABLED:-true}"
MEMCACHED_HOST="${MEMCACHED_HOST:-zammad-memcached}"
MEMCACHED_PORT="${MEMCACHED_PORT:-11211}"
POSTGRESQL_HOST="${POSTGRESQL_HOST:-zammad-postgresql}"
POSTGRESQL_PORT="${POSTGRESQL_PORT:-5432}"
POSTGRESQL_USER="${POSTGRESQL_USER:-postgres}"
POSTGRESQL_PASS="${POSTGRESQL_PASS:-}"
POSTGRESQL_DB="${POSTGRESQL_DB:-zammad_production}"
POSTGRESQL_DB_CREATE="${POSTGRESQL_DB_CREATE:-true}"
: "${RAILS_TRUSTED_PROXIES:=['127.0.0.1', '::1']}"
: "${RSYNC_ADDITIONAL_PARAMS:=--no-perms --no-owner}"
ZAMMAD_RAILSSERVER_HOST="${ZAMMAD_RAILSSERVER_HOST:-zammad-railsserver}"
ZAMMAD_RAILSSERVER_PORT="${ZAMMAD_RAILSSERVER_PORT:-3000}"
ZAMMAD_WEBSOCKET_HOST="${ZAMMAD_WEBSOCKET_HOST:-zammad-websocket}"
ZAMMAD_WEBSOCKET_PORT="${ZAMMAD_WEBSOCKET_PORT:-6042}"
ZAMMAD_LOG_LEVEL="${ZAMMAD_LOG_LEVEL:-warn}"
NGINX_SERVER_NAME="${NGINX_SERVER_NAME:-_}"
: "${NGINX_SERVER_SCHEME:=\$scheme}"

function check_zammad_ready {
  sleep 15
  until [ -f "${ZAMMAD_READY_FILE}" ]; do
    echo "waiting for init container to finish install or update..."
    sleep 10
  done
}

# zammad init
if [ "$1" = 'zammad-init' ]; then
  # install / update zammad
  test -f "${ZAMMAD_READY_FILE}" && rm "${ZAMMAD_READY_FILE}"
  rsync -a ${RSYNC_ADDITIONAL_PARAMS} --delete --exclude 'public/assets/images/*' --exclude 'storage/fs/*' "${ZAMMAD_TMP_DIR}/" "${ZAMMAD_DIR}"
  rsync -a ${RSYNC_ADDITIONAL_PARAMS} "${ZAMMAD_TMP_DIR}"/public/assets/images/ "${ZAMMAD_DIR}"/public/assets/images


  until (echo > /dev/tcp/"${POSTGRESQL_HOST}"/"${POSTGRESQL_PORT}") &> /dev/null; do
    echo "zammad-init waiting for postgresql server to be ready..."
    sleep 5
  done

  cd "${ZAMMAD_DIR}"

  # configure database
  sed -e "s#.*adapter:.*#  adapter: postgresql#g" -e "s#.*database:.*#  database: ${POSTGRESQL_DB}#g" -e "s#.*username:.*#  username: ${POSTGRESQL_USER}#g" -e "s#.*password:.*#  password: ${POSTGRESQL_PASS}\\n  host: ${POSTGRESQL_HOST}\\n  port: ${POSTGRESQL_PORT}#g" < contrib/packager.io/database.yml.pkgr > config/database.yml

  if [ "${MEMCACHED_ENABLED}" == "true" ]; then
    # configure memcache
    sed -i -e "s/.*config.cache_store.*file_store.*cache_file_store.*/    config.cache_store = :dalli_store, '${MEMCACHED_HOST}:${MEMCACHED_PORT}'\\n    config.session_store = :dalli_store, '${MEMCACHED_HOST}:${MEMCACHED_PORT}'/" config/application.rb
  fi

  # configure trusted proxies
  sed -i -e "s#config.action_dispatch.trusted_proxies =.*#config.action_dispatch.trusted_proxies = ${RAILS_TRUSTED_PROXIES}#" config/environments/production.rb
  sed -i -e "s#.*config.log_level =.*#config.log_level = :${ZAMMAD_LOG_LEVEL}#" config/environments/production.rb


  # check if database exists / update to new version
  echo "initialising / updating database..."
  if ! (bundle exec rails r 'puts User.any?' 2> /dev/null | grep -q true); then
    if [ "${POSTGRESQL_DB_CREATE}" == "true" ]; then
      bundle exec rake db:create
    fi
    bundle exec rake db:migrate
    bundle exec rake db:seed

    # create autowizard.json on first install
    if [ -n "${AUTOWIZARD_JSON}" ]; then
      echo "${AUTOWIZARD_JSON}" | base64 -d > auto_wizard.json
    fi
  else
    bundle exec rake db:migrate
  fi

  # echo "auto installing packages..."
  bundle exec rails r "Package.auto_install"
  # bundle exec rails zammad:package:migrate

  # es config
  echo "changing elasticsearch settings..."
  if [ "${ELASTICSEARCH_ENABLED}" == "false" ]; then
    bundle exec rails r "Setting.set('es_url', '')"
  else
    bundle exec rails r "Setting.set('es_url', '${ELASTICSEARCH_SCHEMA}://${ELASTICSEARCH_HOST}:${ELASTICSEARCH_PORT}')"

    bundle exec rails r "Setting.set('es_index', '${ELASTICSEARCH_NAMESPACE}')"

    if [ -n "${ELASTICSEARCH_USER}" ] && [ -n "${ELASTICSEARCH_PASS}" ]; then
      bundle exec rails r "Setting.set('es_user', \"${ELASTICSEARCH_USER}\")"
      bundle exec rails r "Setting.set('es_password', \"${ELASTICSEARCH_PASS}\")"
    fi

    until (echo > /dev/tcp/${ELASTICSEARCH_HOST}/${ELASTICSEARCH_PORT}) &> /dev/null; do
      echo "zammad railsserver waiting for elasticsearch server to be ready..."
      sleep 5
    done

    if [ "${ELASTICSEARCH_SSL_VERIFY}" == "false" ]; then
      SSL_SKIP_VERIFY="-k"
    else
      SSL_SKIP_VERIFY=""
    fi

    if [ "${ELASTICSEARCH_REINDEX}" == "true" ]; then
      if ! curl -s "${SSL_SKIP_VERIFY}" "${ELASTICSEARCH_SCHEMA}://${ELASTICSEARCH_HOST}:${ELASTICSEARCH_PORT}/_cat/indices" | grep -q zammad; then
        echo "rebuilding es searchindex..."
        bundle exec rake searchindex:rebuild
      fi
    fi
  fi
  echo "rebuilding assets..."
  bundle exec rake assets:precompile &> /dev/null

  # chown everything to zammad user
  chown -R "${ZAMMAD_USER}":"${ZAMMAD_USER}" "${ZAMMAD_DIR}"

  echo "zammad-init ready"
  # create install ready file
  su -c "echo 'zammad-init' > ${ZAMMAD_READY_FILE}" "${ZAMMAD_USER}"
fi


# zammad nginx
if [ "$1" = 'zammad-nginx' ]; then
  check_zammad_ready

    # configure nginx
  sed -e "s#proxy_set_header X-Forwarded-Proto .*;#proxy_set_header X-Forwarded-Proto ${NGINX_SERVER_SCHEME};#g" \
      -e 's#client_max_body_size .*#client_max_body_size 0;#'  \
      -e "s#server .*:3000#server ${ZAMMAD_RAILSSERVER_HOST}:${ZAMMAD_RAILSSERVER_PORT}#g" \
      -e "s#server .*:6042#server ${ZAMMAD_WEBSOCKET_HOST}:${ZAMMAD_WEBSOCKET_PORT}#g" \
      -e "s#server_name .*#server_name ${NGINX_SERVER_NAME};#g" \
      -e 's#/var/log/nginx/zammad.\(access\|error\).log#/dev/stdout#g' < contrib/nginx/zammad.conf > /etc/nginx/sites-enabled/default

  echo "starting nginx..."

  exec /usr/sbin/nginx -g 'daemon off;'
fi


# zammad-railsserver
if [ "$1" = 'zammad-railsserver' ]; then
  test -f /opt/zammad/tmp/pids/server.pid && rm /opt/zammad/tmp/pids/server.pid

  check_zammad_ready

  cd "${ZAMMAD_DIR}"

  echo "starting railsserver..."

  #shellcheck disable=SC2101
  exec gosu "${ZAMMAD_USER}":"${ZAMMAD_USER}" bundle exec rails server puma -b [::] -p "${ZAMMAD_RAILSSERVER_PORT}" -e "${RAILS_ENV}"
fi


# zammad-scheduler
if [ "$1" = 'zammad-scheduler' ]; then
  check_zammad_ready

  cd "${ZAMMAD_DIR}"

  echo "starting scheduler..."

  exec gosu "${ZAMMAD_USER}":"${ZAMMAD_USER}" bundle exec script/scheduler.rb run
fi


# zammad-websocket
if [ "$1" = 'zammad-websocket' ]; then
  check_zammad_ready

  cd "${ZAMMAD_DIR}"

  echo "starting websocket server..."

  exec gosu "${ZAMMAD_USER}":"${ZAMMAD_USER}" bundle exec script/websocket-server.rb -b 0.0.0.0 -p "${ZAMMAD_WEBSOCKET_PORT}" start
fi