name: build-deploy-publish
on:
  pull_request:
    branches:
      - main
  push:
    branches:
      - main
jobs:
  build-deploy-publish:
    runs-on: ubuntu-latest
    permissions:
      contents: write
      id-token: write
      pull-requests: write
    steps:
      - uses: actions/checkout@v4
        with:
          persist-credentials: false
      - uses: actions/setup-node@v4
        with:
          node-version: '24'

      - run: git submodule update --init --recommend-shallow

      - run: npm ci
      - run: npm test
      - run: npm run build-docs

      - run: npm run generate
      - name: Check generated file is up-to-date with gpuweb submodule (`npm run generate` to fix this)
        run: git update-index --really-refresh && git diff-index --quiet HEAD

      - name: Deploy documentation to GitHub Pages
        if: ${{ success() && github.ref == 'refs/heads/main' }}
        uses: JamesIves/github-pages-deploy-action@3.6.2
        with:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          BRANCH: gh-pages
          FOLDER: tsdoc-src/out

      - name: Publish package to NPM
        id: publish
        if: ${{ success() && github.repository == 'gpuweb/types' && github.ref == 'refs/heads/main' }}
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          git fetch --depth=1 --tags origin
          LATEST_TAG=$(git tag -l 'v*' --sort=-v:refname | head -n 1)
          echo "latest_tag=${LATEST_TAG}" >> "$GITHUB_OUTPUT"
          if git diff --quiet "${LATEST_TAG}" -- dist/index.d.ts; then
            echo "dist/index.d.ts has not changed since ${LATEST_TAG}; skipping publish."
            exit 0
          fi

          npm pkg set version="${LATEST_TAG#v}"
          NEW_VERSION=$(npm version patch --no-git-tag-version)
          echo "Publishing new version: ${NEW_VERSION}"

          npm publish
          echo "new_version=${NEW_VERSION#v}" >> "$GITHUB_OUTPUT"

          git tag "${NEW_VERSION}"
          git push "https://x-access-token:${GITHUB_TOKEN}@github.com/${GITHUB_REPOSITORY}.git" "${NEW_VERSION}"

      - name: Comment on merged PR
        if: ${{ (success() || failure()) && github.repository == 'gpuweb/types' && github.event_name == 'push' && github.ref == 'refs/heads/main' }}
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          JOB_STATUS: ${{ job.status }}
          LATEST_TAG: ${{ steps.publish.outputs.latest_tag }}
          NEW_VERSION: ${{ steps.publish.outputs.new_version }}
          RUN_URL: ${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}
        run: |
          PR_NUMBER=$(gh api "/repos/${GITHUB_REPOSITORY}/commits/${GITHUB_SHA}/pulls" --jq '.[0].number // empty')
          if [ -z "${PR_NUMBER}" ]; then
            echo "No associated PR found for commit ${GITHUB_SHA}; skipping PR comment."
            exit 0
          fi

          if [ "${JOB_STATUS}" != "success" ]; then
            gh pr comment "${PR_NUMBER}" --body "⚠️ Post-merge \`build-deploy-publish\` workflow failed on \`main\`: [workflow run](${RUN_URL})"
          elif [ -n "${NEW_VERSION}" ]; then
            gh pr comment "${PR_NUMBER}" --body "📦 Published [\`@webgpu/types@${NEW_VERSION}\`](https://www.npmjs.com/package/@webgpu/types/v/${NEW_VERSION}) ([workflow run](${RUN_URL}))."
          else
            gh pr comment "${PR_NUMBER}" --body "ℹ️ \`dist/index.d.ts\` has not changed since \`${LATEST_TAG}\`; skipped NPM publish ([workflow run](${RUN_URL}))."
          fi