release.sh

#!/bin/bash

# ===================================
# Automated build script for Egison
# Required Environment Variables:
#  * TRAVIS_BUILD_DIR -- Given by TravisCI
#  * TRAVIS_REPO_SLUG -- Givven by TravisCI
#  * ID_RSA           -- Given by GitHub's secrets.
#  * API_AUTH         -- Given by GitHub's secrets.
#                        Auth token for GitHub Rest API.
# ===================================
set -e

readonly FNAME=$(echo "egison_$(uname)_$(uname -m)" | tr '[:upper:]' '[:lower:]' | tr -dc 'a-z0-9._')
readonly THIS_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
LATEST_VERSION=
CURRENT_VERSION=
RELEASE_ARCHIVE=
readonly GITHUB_AUTH="$API_AUTH"
readonly TARGET_BRANCH="master"
readonly BUILDER_REPO="$GITHUB_REPOSITORY" # egison/homebrew-egison
readonly BUILDER_REPO_NAME=${BUILDER_REPO##*/}
readonly BUILD_REPO="egison/egison"
## User-Agent starts with Travis is required (https://github.com/travis-ci/travis-ci/issues/5649)
readonly COMMON_HEADER=("--retry" "3" "-H" "User-Agent: Travis/1.0" "-H" "Authorization: token ${GITHUB_AUTH}" "-H" "Accept: application/vnd.github.v3+json" "-L" "-f")
readonly RELEASE_API_URL="https://api.github.com/repos/${BUILDER_REPO}/releases"

# Initialize SSH keys
init () {
  echo "start init"
  mkdir -p "$HOME"/.ssh/
  printf "Host github.com\n\tStrictHostKeyChecking no\n" >> "$HOME"/.ssh/config
  echo "${ID_RSA}" | base64 --decode | gzip -d > "$HOME"/.ssh/id_rsa
  chmod 600 "$HOME"/.ssh/id_rsa
  git config --global user.name "greymd"
  git config --global user.email "yamadagrep@gmail.com"
}

get_version () {
  LATEST_VERSION=$(get_latest_release "${BUILD_REPO}")
  CURRENT_VERSION=$(get_latest_release "${BUILDER_REPO}")
  RELEASE_ARCHIVE="${TRAVIS_BUILD_DIR:-$THIS_DIR}/${FNAME}_${LATEST_VERSION}.zip"
  readonly LATEST_VERSION CURRENT_VERSION RELEASE_ARCHIVE
}

bump () {
  echo "start bump"
  local _sha256hash
  local _release_id
  local _new_release_info
  if [[ "${CURRENT_VERSION}" == "${LATEST_VERSION}" ]];then
    echo "Skip git push. It is latest version." >&2
    exit 0
  fi
  # Build tarball
  ( build )
  if [[ ! -s "${RELEASE_ARCHIVE}" ]];then
    echo "Failed to create '${RELEASE_ARCHIVE}'"
    exit 1
  fi

  rm -rf "${THIS_DIR:?}/${BUILDER_REPO_NAME}"
  git clone -b "${TARGET_BRANCH}" \
    "git@github.com:${BUILDER_REPO}.git" \
    "${THIS_DIR}/${BUILDER_REPO_NAME}"

  cd "${THIS_DIR}/${BUILDER_REPO_NAME}"

  # Edit files
  _sha256hash=$(shasum -a 256 "${RELEASE_ARCHIVE}" | perl -anle 'print $F[0]')
  perl -i -pe 's/VERSION = ".*"/VERSION = "'"${LATEST_VERSION}"'"/' "./egison.rb"
  perl -i -pe 's/sha256 ".*"/sha256 "'"${_sha256hash}"'"/' "./egison.rb"
  echo "${LATEST_VERSION}-$(date +%s)" > "./VERSION"

  # Crete versions and make changes to GitHub
  git add "./VERSION" "./egison.rb"
  git commit -m "[skip ci] Bump version to ${LATEST_VERSION}"

  ## Clean tags just in case
  _release_id=$(get_release_list | jq '.[] | select(.tag_name == "'"${LATEST_VERSION}"'") | .id')
  ## If there is already same name of the release, delete it.
  if [[ "${_release_id}" != "" ]]; then
    delete_release "${_release_id}" || exit 1
    git push origin :"${LATEST_VERSION}"  || true
    git tag -d "${LATEST_VERSION}" || true
  fi

  ## Push changes
  git push origin "${TARGET_BRANCH}"

  # Create new release
  _new_release_info=$(create_release "${LATEST_VERSION}" "${TARGET_BRANCH}")
  _upload_url=$(echo "${_new_release_info}" | jq -r .upload_url | perl -pe 's/{.*}//')
  upload_assets "${_upload_url}" "${RELEASE_ARCHIVE}"
}

build () {
  echo "start build"
  local _exefile _pathsfile
  local _workdir="work-$RANDOM"
  git clone -b "${LATEST_VERSION}" \
    "https://github.com/${BUILD_REPO}.git" "${THIS_DIR}/egison"
  cd "${THIS_DIR}/egison"

  if cabal v2-update --help &> /dev/null ;then ## If cabal has v2-* sub-commands (more than 2.4.1)
    cabal v2-update
    cabal v2-install --only-dependencies --lib
    cabal v2-configure
    cabal v2-build
    _pathsfile="$(find "${THIS_DIR}/egison/dist-newstyle" -type f -name 'Paths_egison.hs' | head -n 1)"
    perl -i -pe 's@datadir[ ]*=[ ]*.*$@datadir = "/usr/local/lib/egison"@' "$_pathsfile"
    cp "$_pathsfile" "${THIS_DIR}/egison/hs-src"
    cabal v2-build
    echo "egison is succefully build." >&2
    _exefile="$(find "${THIS_DIR}/egison/dist-newstyle" -type f -name 'egison')"
    echo "Egison command is succefully found in ${_exefile}." >&2
  else
    cabal update
    cabal install --only-dependencies
    cabal configure --datadir=/usr/local/lib --datasubdir=egison
    cabal build
    _exefile="${THIS_DIR}/egison/dist/build/egison/egison"
  fi
  mkdir -p "${_workdir}/bin"
  mkdir -p "${_workdir}/lib/egison"

  ## Exit the function if file is not executable file.
  file "$_exefile" | grep -q 'executable' || return 1
  cp "${_exefile}" "${_workdir}/bin"
  cp -rf "${THIS_DIR}/egison/lib" "${_workdir}/lib/egison"
  (
    cd "${THIS_DIR}/egison/${_workdir}"
    zip -r "${RELEASE_ARCHIVE}" bin lib
  )
  # tar -zcvf "${RELEASE_ARCHIVE}" \
  #   -C "${THIS_DIR}/egison/${_workdir}" bin lib
  rm -rf "${THIS_DIR}"/egison
  echo "${RELEASE_ARCHIVE} is successfully created." >&2
}

get_release_list () {
  curl -v -H "User-Agent: Travis/1.0" \
    -H "Authorization: token $GITHUB_AUTH" \
    "${RELEASE_API_URL}"
}

delete_release () {
  local _id="$1"
  curl "${COMMON_HEADER[@]}" \
  -X DELETE "${RELEASE_API_URL}/${_id}"
}

create_release () {
  local _tag="$1" ;shift
  local _branch="$1" ;shift
  curl "${COMMON_HEADER[@]}" \
    -X POST \
    -d '{
      "tag_name": "'"${_tag}"'",
      "target_commitish": "'"${_branch}"'",
      "name": "'"${_tag}"'",
      "body": "Bump version to '"${_tag}"'",
      "draft": false,
      "prerelease": false
    }' \
  "${RELEASE_API_URL}"
}

upload_assets () {
  local _url="$1"; shift
  local _file="$1"; shift
  curl "${COMMON_HEADER[@]}" \
    -H "Content-Type: $(file -b --mime-type "${_file}")" \
    --data-binary @"${_file}" \
    "${_url}?name=$(basename "${_file}")"
}

get_latest_release () {
  local _repo="$1"
  echo "get_latest_release start $_repo" >&2
  curl --retry 3 -f -v -H "User-Agent: Travis/1.0" \
       -H "Authorization: token $GITHUB_AUTH" \
       -L "https://api.github.com/repos/${_repo}/releases/latest" > "./latest.json"
  _ret=$?
  if [[ $_ret != 0 ]] || [[ ! -s "./latest.json" ]]; then
    exit 1
  fi
  jq -r .tag_name < "./latest.json" | tr -d '\n'
  rm "./latest.json"
  echo "get_latest_release end $_repo" >&2
}

main () {
  local _cmd
  _cmd="${1-}"
  shift || true
  case "$_cmd" in
    init)
      init
      ;;
    bump)
      get_version
      bump
      ;;
    *)
      exit 1
  esac
}

main "$@"