#!/bin/bash -x

# 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 )"

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 "  -c <local.params>, --config <local.params>  Path to the local.params config file"
  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=$(getopt -o c:dhp:r:tv \
    --long config:,debug,help,ssl-port:,roles:,test,vagrant \
    -n "${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 ${1} in
      -c | --config)
        CONFIG_FILE=${2}
        shift 2
        ;;
      -d | --debug)
        LOG_LEVEL="debug"
        shift
        ;;
      -p | --ssl-port)
        CONTROLLER_EXT_SSL_PORT=${2}
        shift 2
        ;;
      -r | --roles)
        for i in ${2//,/ }
          do
            # Verify the role exists
            if [[ ! "database,api,controller,keepstore,websocket,keepweb,workbench2,keepproxy,shell,workbench,dispatcher" == *"$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
}

CONFIG="${SCRIPT_DIR}/local.params"
CONFIG_DIR="config_examples/single_host/multiple_hostnames"
LOG_LEVEL="info"
CONTROLLER_EXT_SSL_PORT=443
TESTS_DIR="tests"

CLUSTER=""
DOMAIN=""

# Hostnames/IPs used for single-host deploys
HOSTNAME_EXT=""
HOSTNAME_INT="127.0.1.1"

# Initial user setup
INITIAL_USER=""
INITIAL_USER_EMAIL=""
INITIAL_USER_PASSWORD=""

CONTROLLER_EXT_SSL_PORT=8000
KEEP_EXT_SSL_PORT=25101
# Both for collections and downloads
KEEPWEB_EXT_SSL_PORT=9002
WEBSHELL_EXT_SSL_PORT=4202
WEBSOCKET_EXT_SSL_PORT=8002
WORKBENCH1_EXT_SSL_PORT=443
WORKBENCH2_EXT_SSL_PORT=3001

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"

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

arguments ${@}

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

if ! grep -E '^[[:alnum:]]{5}$' <<<${CLUSTER} ; then
  echo >&2 "ERROR: <CLUSTER> must be exactly 5 alphanumeric characters long"
  echo >&2 "Fix the cluster name in the 'local.params' file and re-run the provision script"
  exit 1
fi

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

if which salt-call; then
  echo "Salt already installed"
else
  curl -L https://bootstrap.saltstack.com -o /tmp/bootstrap_salt.sh
  sh /tmp/bootstrap_salt.sh -XdfP -x python3
  /bin/systemctl stop salt-minion.service
  /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}/*

pillar_roots:
  base:
    - ${P_DIR}
EOFSM

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

# 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}/pillars"
  SOURCE_TESTS_DIR="/vagrant/${TESTS_DIR}"
else
  SOURCE_PILLARS_DIR="${SCRIPT_DIR}/${CONFIG_DIR}/pillars"
  SOURCE_TESTS_DIR="${SCRIPT_DIR}/${TESTS_DIR}"
fi

SOURCE_STATES_DIR="${EXTRA_STATES_DIR}"

# Replace variables (cluster,  domain, etc) in the pillars, states and tests
# to ease deployment for newcomers
for f in "${SOURCE_PILLARS_DIR}"/*; do
  sed "s/__ANONYMOUS_USER_TOKEN__/${ANONYMOUS_USER_TOKEN}/g;
       s/__BLOB_SIGNING_KEY__/${BLOB_SIGNING_KEY}/g;
       s/__CONTROLLER_EXT_SSL_PORT__/${CONTROLLER_EXT_SSL_PORT}/g;
       s/__CLUSTER__/${CLUSTER}/g;
       s/__DOMAIN__/${DOMAIN}/g;
       s/__HOSTNAME_EXT__/${HOSTNAME_EXT}/g;
       s/__HOSTNAME_INT__/${HOSTNAME_INT}/g;
       s/__INITIAL_USER_EMAIL__/${INITIAL_USER_EMAIL}/g;
       s/__INITIAL_USER_PASSWORD__/${INITIAL_USER_PASSWORD}/g;
       s/__INITIAL_USER__/${INITIAL_USER}/g;
       s/__KEEPWEB_EXT_SSL_PORT__/${KEEPWEB_EXT_SSL_PORT}/g;
       s/__KEEP_EXT_SSL_PORT__/${KEEP_EXT_SSL_PORT}/g;
       s/__MANAGEMENT_TOKEN__/${MANAGEMENT_TOKEN}/g;
       s/__RELEASE__/${RELEASE}/g;
       s/__SYSTEM_ROOT_TOKEN__/${SYSTEM_ROOT_TOKEN}/g;
       s/__VERSION__/${VERSION}/g;
       s/__WEBSHELL_EXT_SSL_PORT__/${WEBSHELL_EXT_SSL_PORT}/g;
       s/__WEBSOCKET_EXT_SSL_PORT__/${WEBSOCKET_EXT_SSL_PORT}/g;
       s/__WORKBENCH1_EXT_SSL_PORT__/${WORKBENCH1_EXT_SSL_PORT}/g;
       s/__WORKBENCH2_EXT_SSL_PORT__/${WORKBENCH2_EXT_SSL_PORT}/g;
       s/__WORKBENCH_SECRET_KEY__/${WORKBENCH_SECRET_KEY}/g" \
  "${f}" > "${P_DIR}"/$(basename "${f}")
done

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

# Replace helper state files that differ from the formula's examples
if [ -d "${SOURCE_STATES_DIR}" ]; then
  mkdir -p "${F_DIR}"/extra/extra

  for f in "${SOURCE_STATES_DIR}"/*; do
    sed "s/__ANONYMOUS_USER_TOKEN__/${ANONYMOUS_USER_TOKEN}/g;
         s/__CLUSTER__/${CLUSTER}/g;
         s/__BLOB_SIGNING_KEY__/${BLOB_SIGNING_KEY}/g;
         s/__CONTROLLER_EXT_SSL_PORT__/${CONTROLLER_EXT_SSL_PORT}/g;
         s/__DOMAIN__/${DOMAIN}/g;
         s/__HOSTNAME_EXT__/${HOSTNAME_EXT}/g;
         s/__HOSTNAME_INT__/${HOSTNAME_INT}/g;
         s/__INITIAL_USER_EMAIL__/${INITIAL_USER_EMAIL}/g;
         s/__INITIAL_USER_PASSWORD__/${INITIAL_USER_PASSWORD}/g;
         s/__INITIAL_USER__/${INITIAL_USER}/g;
         s/__KEEPWEB_EXT_SSL_PORT__/${KEEPWEB_EXT_SSL_PORT}/g;
         s/__KEEP_EXT_SSL_PORT__/${KEEP_EXT_SSL_PORT}/g;
         s/__MANAGEMENT_TOKEN__/${MANAGEMENT_TOKEN}/g;
         s/__RELEASE__/${RELEASE}/g;
         s/__SYSTEM_ROOT_TOKEN__/${SYSTEM_ROOT_TOKEN}/g;
         s/__VERSION__/${VERSION}/g;
         s/__WEBSHELL_EXT_SSL_PORT__/${WEBSHELL_EXT_SSL_PORT}/g;
         s/__WEBSOCKET_EXT_SSL_PORT__/${WEBSOCKET_EXT_SSL_PORT}/g;
         s/__WORKBENCH1_EXT_SSL_PORT__/${WORKBENCH1_EXT_SSL_PORT}/g;
         s/__WORKBENCH2_EXT_SSL_PORT__/${WORKBENCH2_EXT_SSL_PORT}/g;
         s/__WORKBENCH_SECRET_KEY__/${WORKBENCH_SECRET_KEY}/g" \
    "${f}" > "${F_DIR}/extra/extra"/$(basename "${f}")
  done
fi

# Now, we build the SALT states/pillars trees
# As we need to separate both states and pillars in case we want specific
# roles, we iterate on both at the same time

# States
cat > ${S_DIR}/top.sls << EOFTSLS
base:
  '*':
    - locale
EOFTSLS

# Pillars
cat > ${P_DIR}/top.sls << EOFPSLS
base:
  '*':
    - locale
    - arvados
EOFPSLS

# States, extra states
if [ -d "${F_DIR}"/extra/extra ]; then
  for f in "${F_DIR}"/extra/extra/*.sls; do
  echo "    - extra.$(basename ${f} | sed 's/.sls$//g')" >> ${S_DIR}/top.sls
  done
fi

# If we want specific roles for a node, just add the desired states
# and its dependencies
if [ -z "${ROLES}" ]; then
  # States
  echo "    - nginx.passenger" >> ${S_DIR}/top.sls
  echo "    - postgres" >> ${S_DIR}/top.sls
  echo "    - docker" >> ${S_DIR}/top.sls
  echo "    - arvados" >> ${S_DIR}/top.sls

  # Pillars
  echo "    - docker" >> ${P_DIR}/top.sls
  echo "    - nginx_api_configuration" >> ${P_DIR}/top.sls
  echo "    - nginx_controller_configuration" >> ${P_DIR}/top.sls
  echo "    - nginx_keepproxy_configuration" >> ${P_DIR}/top.sls
  echo "    - nginx_keepweb_configuration" >> ${P_DIR}/top.sls
  echo "    - nginx_passenger" >> ${P_DIR}/top.sls
  echo "    - nginx_websocket_configuration" >> ${P_DIR}/top.sls
  echo "    - nginx_webshell_configuration" >> ${P_DIR}/top.sls
  echo "    - nginx_workbench2_configuration" >> ${P_DIR}/top.sls
  echo "    - nginx_workbench_configuration" >> ${P_DIR}/top.sls
  echo "    - postgresql" >> ${P_DIR}/top.sls
else
  # If we add individual roles, make sure we add the repo first
  echo "    - arvados.repo" >> ${S_DIR}/top.sls
  for R in ${ROLES}; do
    case "${R}" in
      "database")
        # States
        echo "    - postgres" >> ${S_DIR}/top.sls
        # Pillars
        echo '    - postgresql' >> ${P_DIR}/top.sls
      ;;
      "api")
        # States
        # FIXME: https://dev.arvados.org/issues/17352
        grep -q "postgres.client" ${S_DIR}/top.sls || echo "    - postgres.client" >> ${S_DIR}/top.sls
        grep -q "nginx.passenger" ${S_DIR}/top.sls || echo "    - nginx.passenger" >> ${S_DIR}/top.sls
        grep -q "arvados.${R}" ${S_DIR}/top.sls    || echo "    - arvados.${R}" >> ${S_DIR}/top.sls
        # Pillars
        grep -q "docker" ${P_DIR}/top.sls                   || echo "    - docker" >> ${P_DIR}/top.sls
        grep -q "postgresql" ${P_DIR}/top.sls               || echo "    - postgresql" >> ${P_DIR}/top.sls
        grep -q "nginx_passenger" ${P_DIR}/top.sls          || echo "    - nginx_passenger" >> ${P_DIR}/top.sls
        grep -q "nginx_${R}_configuration" ${P_DIR}/top.sls || echo "    - nginx_${R}_configuration" >> ${P_DIR}/top.sls
      ;;
      "controller" | "websocket" | "workbench" | "workbench2" | "keepweb" | "keepproxy")
        # States
        grep -q "nginx.passenger" ${S_DIR}/top.sls || echo "    - nginx.passenger" >> ${S_DIR}/top.sls
        grep -q "arvados.${R}" ${S_DIR}/top.sls    || echo "    - arvados.${R}" >> ${S_DIR}/top.sls
        # Pillars
        grep -q "nginx_passenger" ${P_DIR}/top.sls          || echo "    - nginx_passenger" >> ${P_DIR}/top.sls
        grep -q "nginx_${R}_configuration" ${P_DIR}/top.sls || echo "    - nginx_${R}_configuration" >> ${P_DIR}/top.sls
      ;;
      "shell")
        # States
        grep -q "docker" ${S_DIR}/top.sls       || echo "    - docker" >> ${S_DIR}/top.sls
        grep -q "arvados.${R}" ${S_DIR}/top.sls || echo "    - arvados.${R}" >> ${S_DIR}/top.sls
        # Pillars
        grep -q "" ${P_DIR}/top.sls                             || echo "    - docker" >> ${P_DIR}/top.sls
        grep -q "nginx_webshell_configuration" ${P_DIR}/top.sls || echo "    - nginx_webshell_configuration" >> ${P_DIR}/top.sls
      ;;
      "dispatcher")
        # States
        grep -q "docker" ${S_DIR}/top.sls       || echo "    - docker" >> ${S_DIR}/top.sls
        grep -q "arvados.${R}" ${S_DIR}/top.sls || echo "    - arvados.${R}" >> ${S_DIR}/top.sls
        # Pillars
        # ATM, no specific pillar needed
      ;;
      "keepstore")
        # States
        grep -q "arvados.${R}" ${S_DIR}/top.sls || echo "    - arvados.${R}" >> ${S_DIR}/top.sls
        # Pillars
        # ATM, no specific pillar needed
      ;;
      *)
        echo "Unknown role ${R}"
        exit 1
      ;;
    esac
  done
fi

# 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${VAGRANT}" = "xyes" ]; then
  cp /etc/ssl/certs/arvados-snakeoil-ca.pem /vagrant/${CLUSTER}.${DOMAIN}-arvados-snakeoil-ca.pem

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

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