#!/usr/bin/env bash
set -euo pipefail

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
ROOT_DIR="$(cd "${SCRIPT_DIR}/.." && pwd)"
source "${SCRIPT_DIR}/package_common.sh"

require_command sha256sum

VERSION="$(project_version)"
PACKAGE_NAME="$(project_name)"
DIST_DIR="${DIST_DIR:-${ROOT_DIR}/dist}"
ARCH_DIST_DIR="${DIST_DIR}/arch"
PORTABLE_TARBALL="${DIST_DIR}/${PACKAGE_NAME}-x11-linux-${VERSION}.tar.gz"
PORTABLE_CHECKSUM="${PORTABLE_TARBALL}.sha256"
ARCH_TARBALL="${ARCH_DIST_DIR}/${PACKAGE_NAME}-${VERSION}.tar.gz"
ARCH_PKGBUILD="${ARCH_DIST_DIR}/PKGBUILD"
SHA256SUMS_PATH="${DIST_DIR}/SHA256SUMS"

require_file() {
  local path="$1"
  if [[ -f "${path}" ]]; then
    return
  fi
  echo "missing required release artifact: ${path}" >&2
  exit 1
}

require_file "${PORTABLE_TARBALL}"
require_file "${PORTABLE_CHECKSUM}"
require_file "${ARCH_TARBALL}"
require_file "${ARCH_PKGBUILD}"

shopt -s nullglob
wheels=("${DIST_DIR}/${PACKAGE_NAME//-/_}-${VERSION}-"*.whl)
debs=("${DIST_DIR}/${PACKAGE_NAME}_${VERSION}_"*.deb)
shopt -u nullglob

if [[ "${#wheels[@]}" -eq 0 ]]; then
  echo "missing required release artifact: wheel for ${PACKAGE_NAME} ${VERSION}" >&2
  exit 1
fi
if [[ "${#debs[@]}" -eq 0 ]]; then
  echo "missing required release artifact: deb for ${PACKAGE_NAME} ${VERSION}" >&2
  exit 1
fi

mapfile -t published_files < <(
  cd "${DIST_DIR}" && find . -type f ! -name "SHA256SUMS" -print | LC_ALL=C sort
)

if [[ "${#published_files[@]}" -eq 0 ]]; then
  echo "no published files found in ${DIST_DIR}" >&2
  exit 1
fi

(
  cd "${DIST_DIR}"
  rm -f "SHA256SUMS"
  sha256sum "${published_files[@]}" >"SHA256SUMS"
)

echo "generated ${SHA256SUMS_PATH}"