Fix auto-tag: use git push + API pipeline trigger

    allow_failure: true

# Auto-tag when version in CMakeLists.txt is newer than latest git tag.

# Uses the API to create the tag so that a tag pipeline is triggered.

# Uses git push to create the tag, then the API to trigger a pipeline for it

# (git push from CI_JOB_TOKEN doesn't auto-trigger tag pipelines).

auto-tag:

  stage: tag

  image: curlimages/curl:latest

  script:

  - dnf install -y git curl

  - VERSION=$(sed -n 's/.*VERSION \([0-9]*\.[0-9]*\.[0-9]*\).*/\1/p' CMakeLists.txt)

  - |

    EXISTING=$(curl -s --header "JOB-TOKEN: ${CI_JOB_TOKEN}" \

      "${CI_API_V4_URL}/projects/${CI_PROJECT_ID}/repository/tags/v${VERSION}" \

      | grep -c '"name"') || true

    if [ "$EXISTING" -gt 0 ]; then

    if git ls-remote --tags origin "refs/tags/v${VERSION}" | grep -q .; then

      echo "Tag v${VERSION} already exists, skipping"

    else

      echo "Creating tag v${VERSION}"

      curl -s --fail --header "JOB-TOKEN: ${CI_JOB_TOKEN}" \

        --request POST \

        "${CI_API_V4_URL}/projects/${CI_PROJECT_ID}/repository/tags?tag_name=v${VERSION}&ref=${CI_COMMIT_SHA}"

      git tag "v${VERSION}"

      git push "https://gitlab-ci-token:${CI_JOB_TOKEN}@${CI_SERVER_HOST}/${CI_PROJECT_PATH}.git" "v${VERSION}"

      echo "Triggering pipeline for v${VERSION}"

      curl -s --fail --request POST \

        --header "JOB-TOKEN: ${CI_JOB_TOKEN}" \

        --form "ref=v${VERSION}" \

        "${CI_API_V4_URL}/projects/${CI_PROJECT_ID}/trigger/pipeline"

    fi

  rules:

  - if: $CI_COMMIT_TAG