#!/bin/bash

# Copyright (C) The Arvados Authors. All rights reserved.
#
# SPDX-License-Identifier: CC-BY-SA-3.0

# If you want to test arvados in a single host, you can run this script, which
# will install it using salt masterless
# This script is run by the Vagrant file when you run it with
#
# vagrant up

set -o pipefail

# capture the directory that the script is running from
SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"

CONFIG_DIR="single_host"
RELEASE="production"
VERSION="latest"
ARVADOS_TAG="v1.1.4"
POSTGRES_TAG="v0.41.3"
NGINX_TAG="v2.4.0"
DOCKER_TAG="v1.0.0"
LOCALE_TAG="v0.3.4"

if [ -s ${SCRIPT_DIR}/local.params ]; then
  source ${SCRIPT_DIR}/local.params
else
  echo >&2 "Please create a '${SCRIPT_DIR}/local.params' file with initial values, as described in FIXME_URL_TO_DESCR"
  exit 1
fi

usage() {
  echo >&2
  echo >&2 "Usage: ${0} [-h] [-h]"
  echo >&2
  echo >&2 "${0} options:"
  echo >&2 "  -d, --debug             Run salt installation in debug mode"
  echo >&2 "  -p <N>, --ssl-port <N>  SSL port to use for the web applications"
  echo >&2 "  -t, --test              Test installation running a CWL workflow"
  echo >&2 "  -r, --roles             List of Arvados roles to apply to the host, comma separated"
  echo >&2 "                          Possible values are:"
  echo >&2 "                            api"
  echo >&2 "                            controller"
  echo >&2 "                            keepstore"
  echo >&2 "                            websocket"
  echo >&2 "                            keepweb"
  echo >&2 "                            workbench2"
  echo >&2 "                            keepproxy"
  echo >&2 "                            shell"
  echo >&2 "                            workbench"
  echo >&2 "                            dispatcher"
  echo >&2 "                          Defaults to applying them all"
  echo >&2 "  -h, --help              Display this help and exit"
  echo >&2 "  -v, --vagrant           Run in vagrant and use the /vagrant shared dir"
  echo >&2
}

arguments() {
  # NOTE: This requires GNU getopt (part of the util-linux package on Debian-based distros).
  TEMP=$(getopt -o dhp:r:tv \
    --long debug,help,ssl-port:,roles:,test,vagrant \
    -n "${0}" -- "${@}")

  if [ ${?} != 0 ] ; then echo "GNU getopt missing? Use -h for help"; exit 1 ; fi
  # Note the quotes around `$TEMP': they are essential!
  eval set -- "$TEMP"

  while [ ${#} -ge 1 ]; do
    case ${1} in
      -d | --debug)
        LOG_LEVEL="debug"
        shift
        ;;
      -p | --ssl-port)
        HOST_SSL_PORT=${2}
        shift 2
        ;;
      -r | --roles)
        for i in ${2//,/ }
          do
            # Verify the role exists
            if [[ ! "api,controller,keepstore,websocket,keepweb,workbench2,keepproxy,shell,workbench,dispatcher" == *"$i"* ]]; then
              echo "The role '${i}' is not a valid role"
              usage
              exit 1
            fi
            ROLES="${ROLES} ${i}"
          done
          shift 2
        ;;
      -t | --test)
        TEST="yes"
        shift
        ;;
      -v | --vagrant)
        VAGRANT="yes"
        shift
        ;;
      --)
        shift
        break
        ;;
      *)
        usage
        exit 1
        ;;
    esac
  done
}

LOG_LEVEL="info"
HOST_SSL_PORT=443
TESTS_DIR="tests"

arguments ${@}

# Salt's dir
## states
S_DIR="/srv/salt"
## formulas
F_DIR="/srv/formulas"
##pillars
P_DIR="/srv/pillars"

apt-get update
apt-get install -y curl git jq

dpkg -l |grep salt-minion
if [ ${?} -eq 0 ]; then
  echo "Salt already installed"
else
  curl -L https://bootstrap.saltstack.com -o /tmp/bootstrap_salt.sh
  sh /tmp/bootstrap_salt.sh -XUdfP -x python3
  /bin/systemctl disable salt-minion.service
fi

# Set salt to masterless mode
cat > /etc/salt/minion << EOFSM
file_client: local
file_roots:
  base:
    - ${S_DIR}
    - ${F_DIR}/*
    - ${F_DIR}/*/test/salt/states/examples

pillar_roots:
  base:
    - ${P_DIR}
EOFSM

mkdir -p ${S_DIR}
mkdir -p ${F_DIR}
mkdir -p ${P_DIR}

# States
cat > ${S_DIR}/top.sls << EOFTSLS
base:
  '*':
    - single_host.host_entries
    - single_host.snakeoil_certs
    - locale
    - nginx.passenger
    - postgres
    - docker
EOFTSLS

# If we want specific roles for a node, just add those states
if [ -z "${ROLES}" ]; then
  echo '    - arvados' >> ${S_DIR}/top.sls
else
  for R in ${ROLES}; do
    echo "    - arvados.${R}" >> ${S_DIR}/top.sls
  done
fi

# Pillars
cat > ${P_DIR}/top.sls << EOFPSLS
base:
  '*':
    - arvados
    - docker
    - locale
    - nginx_api_configuration
    - nginx_controller_configuration
    - nginx_keepproxy_configuration
    - nginx_keepweb_configuration
    - nginx_passenger
    - nginx_websocket_configuration
    - nginx_webshell_configuration
    - nginx_workbench2_configuration
    - nginx_workbench_configuration
    - postgresql
EOFPSLS

# Get the formula and dependencies
cd ${F_DIR} || exit 1
git clone --branch "${ARVADOS_TAG}" https://github.com/arvados/arvados-formula.git
git clone --branch "${DOCKER_TAG}" https://github.com/saltstack-formulas/docker-formula.git
git clone --branch "${LOCALE_TAG}" https://github.com/saltstack-formulas/locale-formula.git
git clone --branch "${NGINX_TAG}" https://github.com/saltstack-formulas/nginx-formula.git
git clone --branch "${POSTGRES_TAG}" https://github.com/saltstack-formulas/postgres-formula.git

if [ "x${BRANCH}" != "x" ]; then
  cd ${F_DIR}/arvados-formula || exit 1
  git checkout -t origin/"${BRANCH}"
  cd -
fi

if [ "x${VAGRANT}" = "xyes" ]; then
  SOURCE_PILLARS_DIR="/vagrant/${CONFIG_DIR}"
  TESTS_DIR="/vagrant/${TESTS_DIR}"
else
  SOURCE_PILLARS_DIR="${SCRIPT_DIR}/${CONFIG_DIR}"
  TESTS_DIR="${SCRIPT_DIR}/${TESTS_DIR}"
fi

# Replace cluster and domain name in the example pillars and test files
for f in "${SOURCE_PILLARS_DIR}"/*; do
  sed "s/__CLUSTER__/${CLUSTER}/g;
       s/__DOMAIN__/${DOMAIN}/g;
       s/__RELEASE__/${RELEASE}/g;
       s/__HOST_SSL_PORT__/${HOST_SSL_PORT}/g;
       s/__GUEST_SSL_PORT__/${GUEST_SSL_PORT}/g;
       s/__INITIAL_USER__/${INITIAL_USER}/g;
       s/__INITIAL_USER_EMAIL__/${INITIAL_USER_EMAIL}/g;
       s/__INITIAL_USER_PASSWORD__/${INITIAL_USER_PASSWORD}/g;
       s/__VERSION__/${VERSION}/g" \
  "${f}" > "${P_DIR}"/$(basename "${f}")
done

mkdir -p /tmp/cluster_tests
# Replace cluster and domain name in the example pillars and test files
for f in "${TESTS_DIR}"/*; do
  sed "s/__CLUSTER__/${CLUSTER}/g;
       s/__DOMAIN__/${DOMAIN}/g;
       s/__HOST_SSL_PORT__/${HOST_SSL_PORT}/g;
       s/__INITIAL_USER__/${INITIAL_USER}/g;
       s/__INITIAL_USER_EMAIL__/${INITIAL_USER_EMAIL}/g;
       s/__INITIAL_USER_PASSWORD__/${INITIAL_USER_PASSWORD}/g" \
  ${f} > /tmp/cluster_tests/$(basename ${f})
done
chmod 755 /tmp/cluster_tests/run-test.sh

# FIXME! #16992 Temporary fix for psql call in arvados-api-server
if [ -e /root/.psqlrc ]; then
  if ! ( grep 'pset pager off' /root/.psqlrc ); then
    RESTORE_PSQL="yes"
    cp /root/.psqlrc /root/.psqlrc.provision.backup
  fi
else
  DELETE_PSQL="yes"
fi

echo '\pset pager off' >> /root/.psqlrc
# END FIXME! #16992 Temporary fix for psql call in arvados-api-server

# Now run the install
salt-call --local state.apply -l ${LOG_LEVEL}

# FIXME! #16992 Temporary fix for psql call in arvados-api-server
if [ "x${DELETE_PSQL}" = "xyes" ]; then
  echo "Removing .psql file"
  rm /root/.psqlrc
fi

if [ "x${RESTORE_PSQL}" = "xyes" ]; then
  echo "Restoring .psql file"
  mv -v /root/.psqlrc.provision.backup /root/.psqlrc
fi
# END FIXME! #16992 Temporary fix for psql call in arvados-api-server

# Leave a copy of the Arvados CA so the user can copy it where it's required
echo "Copying the Arvados CA certificate to the installer dir, so you can import it"
# If running in a vagrant VM, also add default user to docker group
if [ "x${VAGRANT}" = "xyes" ]; then
  cp /etc/ssl/certs/arvados-snakeoil-ca.pem /vagrant

  echo "Adding the vagrant user to the docker group"
  usermod -a -G docker vagrant
else
  cp /etc/ssl/certs/arvados-snakeoil-ca.pem ${SCRIPT_DIR}
fi

# Test that the installation finished correctly
if [ "x${TEST}" = "xyes" ]; then
  cd /tmp/cluster_tests
  ./run-test.sh
fi