# .gitlab-ci.yml — Generate tracked-changes DOCX (DIFF) between two versions.
#
# Copy this file to the top level of your specification repository and
# rename it to ".gitlab-ci.yml". Then configure the variables below in
# (Settings > CI/CD > Variables) or override them in your version of
# this file.
#
# The rendered DOCX DIFF is available as a downloadable job artifact.

variables:
  SPEC_INPUT_DIR: "specification" # path to markdown files, relative to repo root
  SPEC_ROOT: "specification" # specification root for section numbering (set to "" to disable)
  SPEC_NUMBER: "38XXX" # specification number (e.g., "38413", "23501")
  BASE_COMMIT: "HEAD~1" # baseline commit (the "before" version)
  REVISION_COMMIT: "HEAD" # revision commit (the "after" version)
  AUTHOR_NAME: "Latest changes" # author name attributed to tracked changes
  BACKEND: "libreoffice" # merge backend: auto, word, libreoffice
  SPECPRESS_REPO: "https://github.com/Ericsson/specpress.git"
  SPECPRESS_REF: "main"

stages:
  - build

docx-diff:
  stage: build
  image: node:20
  before_script:
    - apt-get update && apt-get install -y --no-install-recommends git libreoffice-writer python3-uno
    # Chromium for mermaid diagram rendering
    - apt-get install -y --no-install-recommends chromium
    - export CHROME_BIN=$(which chromium)
  script:
    - git clone --depth 1 --branch $SPECPRESS_REF $SPECPRESS_REPO /tmp/specpress
    - cd /tmp/specpress && npm ci --omit=dev && cd -
    - mkdir -p output
    - COMMIT_DATE=$(git show -s --format=%ci HEAD | awk '{print $1"_"$2}' | tr ':' '-')
    - SHORT_SHA=$(git rev-parse --short HEAD)
    - BRANCH_NAME=$(echo $CI_COMMIT_REF_NAME | tr '/' '_')
    - DOCX_FILE="output/${COMMIT_DATE}_${SPEC_NUMBER}_DIFF_${BRANCH_NAME}_${SHORT_SHA}.docx"
    - >
      node /tmp/specpress/lib/cli/docx-diff.js
      "$SPEC_INPUT_DIR"
      --output "$DOCX_FILE"
      --base "$BASE_COMMIT"
      --revisions "$REVISION_COMMIT"
      --authors "$AUTHOR_NAME"
      --backend "$BACKEND"
      ${SPEC_ROOT:+--spec-root "$SPEC_ROOT"}
  artifacts:
    paths:
      - output/*.docx
    expire_in: 30 days
  only:
    - main
    - tags