pull_request.sh

#!/bin/bash

# shellcheck disable=SC2086

set -euo pipefail

if [[ ${INPUT_DEBUG} == "true" ]]; then
  set -x
fi

fetch() {
  git -c protocol.version=2 fetch -q \
    --no-tags \
    --no-recurse-submodules \
    "$@"
}

MINIMUM_CHECK_RUN_ID_VERSION=1.7.0

if [[ ${INPUT_GITHUB_REF_NAME} == "${GITHUB_EVENT_PULL_REQUEST_NUMBER}/merge" ]]; then
  # If we have checked out the merge commit then fetch enough history to use HEAD^1 as the upstream.
  # We use this instead of github.event.pull_request.base.sha which can be incorrect sometimes.
  head_sha=$(git rev-parse HEAD)
  fetch --depth=2 origin "${head_sha}"
  upstream=$(git rev-parse HEAD^1)
  git_commit=$(git rev-parse HEAD^2)
  echo "Detected merge commit, using HEAD^1 (${upstream}) as upstream and HEAD^2 (${git_commit}) as github commit"
fi

if [[ -z ${upstream+x} ]]; then
  # Otherwise use github.event.pull_request.base.sha as the upstream.
  upstream="${GITHUB_EVENT_PULL_REQUEST_BASE_SHA}"
  git_commit="${GITHUB_EVENT_PULL_REQUEST_HEAD_SHA}"
  fetch origin "${upstream}"
fi

save_annotations=${INPUT_SAVE_ANNOTATIONS}
if [[ ${save_annotations} == "auto" && ${GITHUB_EVENT_PULL_REQUEST_HEAD_REPO_FORK} == "true" ]]; then
  echo "Fork detected, saving annotations to an artifact."
  save_annotations=true
fi

if [[ -n ${INPUT_CHECK_RUN_ID} ]]; then
  trunk_version="$(${TRUNK_PATH} version)"
  # trunk-ignore-begin(shellcheck/SC2312): the == will fail if anything inside the $() fails
  if sort_result=$(printf "%s\n%s\n" "${MINIMUM_CHECK_RUN_ID_VERSION}" "${trunk_version}" | sort --version-sort); then
    if [[ $(echo "${sort_result}" | head -n 1) == "${trunk_version}" ]]; then
      echo "::error::Please update your CLI to ${MINIMUM_CHECK_RUN_ID_VERSION} or higher (current version ${trunk_version})."
      exit 1
    fi
  else
    echo "::warning::sort --version-sort failed - continuing without checking CLI version"
  fi
  # trunk-ignore-end(shellcheck/SC2312)
  annotation_argument=--trunk-annotate=${INPUT_CHECK_RUN_ID}
elif [[ ${save_annotations} == "true" ]]; then
  annotation_argument=--github-annotate-file=${TRUNK_TMPDIR}/annotations.bin
  # Signal that we need to upload an annotations artifact
  echo "TRUNK_UPLOAD_ANNOTATIONS=true" >>"${GITHUB_ENV}"
else
  annotation_argument=--github-annotate
fi

if [[ -n ${INPUT_AUTOFIX_AND_PUSH} ]]; then
  "${TRUNK_PATH}" check --ci --upstream "${upstream}" --fix "${annotation_argument}" ${INPUT_ARGUMENTS}
  git config --global user.email ""
  git config --global user.name "${GITHUB_ACTOR}"
  git commit --all --allow-empty --message "Trunk Check applied autofixes"
  git push origin "${INPUT_GITHUB_REF_NAME}"
else
  "${TRUNK_PATH}" check \
    --ci \
    --upstream "${upstream}" \
    --github-commit "${git_commit}" \
    --github-label "${INPUT_LABEL}" \
    "${annotation_argument}" \
    ${INPUT_ARGUMENTS}
fi