#!/bin/bash

# This script should be run after using `./build-artifact` to create rpms
# and debs.  It will checksum and sign the artifacts and produce tarballs
# suitable for upload and explosion in a bintray repository.

set -o errexit
set -o nounset
set -o pipefail


RELEASE=$(git rev-parse --abbrev-ref HEAD)
if [[ "$RELEASE" = "master" ]]; then
  echo "This script must be run from a branch named for the release, e.g. 0.16.x"
  exit 1
fi

ROOT_DIR=$(git rev-parse --show-toplevel)
cd "${ROOT_DIR}"

declare -A DIST_DIRS=(
  ["ubuntu-xenial"]="${ROOT_DIR}/artifacts/aurora-ubuntu-xenial/dist"
  ["debian-jessie"]="${ROOT_DIR}/artifacts/aurora-debian-jessie/dist"
  ["centos-7"]="${ROOT_DIR}/artifacts/aurora-centos-7/dist/rpmbuild/RPMS/x86_64"
)

function oses() {
  echo "${!DIST_DIRS[@]}"
}

function dist_dir() {
  local os="$1"
  echo "${DIST_DIRS["${os}"]}"
}

function sign_artifacts() {
  local os="$1"
  local dist_dir="$2"
  local stage_dir="$3"

  pushd ${dist_dir}
    find . -maxdepth 1 -type f | while read file; do
      local name=$(basename "${file}")
      # Sign the tarball.
      gpg --armor --output "${stage_dir}/${name}.asc" --detach-sig "${name}"

      # Create the checksums
      shasum -a 512 "${name}" > "${stage_dir}/${name}.sha512"
    done
  popd
}

function zip_artifacts() {
  local os="$1"
  local dist_dir="$2"
  local stage_dir="$3"

  rm -rf "${stage_dir}/${os}" && mkdir -p "${stage_dir}/${os}"
  find "${dist_dir}" "${stage_dir}" -maxdepth 1 -type f | while read file; do
    ln -s ${file} "${stage_dir}/${os}/$(basename ${file})"
  done

  local tarball="$(dirname ${dist_dir})/upload.tar"
  tar -chf "${tarball}" -C "${stage_dir}" "${os}"
  echo "${tarball}"
}

for os in $(oses); do
  dist_dir="$(dist_dir ${os})"
  if [[ -d "${dist_dir}" ]]; then
    stage_dir="${dist_dir}/.stage"
    rm -rf "${stage_dir}" && mkdir -p "${stage_dir}"
    echo "Signing artifacts for ${os}..."
    sign_artifacts "${os}" "${dist_dir}" "${stage_dir}"
    archive="$(zip_artifacts "${os}" "${dist_dir}" "${stage_dir}")"
    echo "Created archive for ${os} artifacts at ${archive}."
  else
    echo "Skipping artifacts for ${os} (not found built under ${dist_dir})."
  fi
done
echo "All artifacts prepared for upload to bintray. The following draft email has been created"
echo "to send to the dev@aurora.apache.org mailing list"
echo

# Create the email template for the release candidate to be sent to the mailing lists.
if [[ $(uname) == Darwin ]]; then
  vote_end=$(date -v+3d)
else
  vote_end=$(date -d+3days)
fi

MESSAGE=$(cat <<__EOF__
To: dev@aurora.apache.org
Subject: [VOTE] Release Apache Aurora $RELEASE packages

All,

I propose that we accept the following artifacts as the official deb and rpm packaging for
Apache Aurora ${RELEASE}:

https://dl.bintray.com/${USER}/aurora/

The Aurora deb and rpm packaging includes the following:

---

The branch used to create the packaging is:
https://git1-us-west.apache.org/repos/asf?p=aurora-packaging.git;a=tree;hb=refs/heads/${RELEASE}

The packages are available at:
https://dl.bintray.com/${USER}/aurora/

The GPG keys used to sign the packages are available at:
https://dist.apache.org/repos/dist/release/aurora/KEYS

Please download, verify, and test. Detailed test instructions are available here:
https://git1-us-west.apache.org/repos/asf?p=aurora-packaging.git;a=tree;f=test;hb=refs/heads/${RELEASE}


The vote will close on ${vote_end}

[ ] +1 Release these as the deb and rpm packages for Apache Aurora ${RELEASE}
[ ] +0
[ ] -1 Do not release these artifacts because...

__EOF__
)

echo "--------------------------------------------------------------------------------"
echo
echo "${MESSAGE}"
echo
echo "--------------------------------------------------------------------------------"
echo