name: Publish to npm
on:
  workflow_dispatch:
    inputs:
      version:
        description: 'npm version to publish'
        type: choice
        required: true
        options:
          # these are defined in ${{vars.versions}}, but ghw doesn't support yet the use of expressions in inputs.
          - 'patch (x.y.z+1, bug fixes)'
          - 'minor (x.y+1.0, new functionality)'
          - 'major (x+1.0.0, api breaking changes)'
      dry_run:
        description: 'Dry run (perform all steps except git push & npm publish)'
        type: boolean
        default: true
        required: true
jobs:
  build:
    uses: ./.github/workflows/build.yml

  publish-npm:
    needs: build
    runs-on: macos-latest
    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0
          fetch-tags: true
      - uses: actions/setup-node@v4
        with:
          node-version: 20
          registry-url: https://registry.npmjs.org/
      - run: npm ci
      - name: Setup versions in ${{'${{env}}'}}
        run: |
          # git tag -d v3.2.0 || true
          # git push --delete origin v3.2.0 || true # for testing purposes only
          # It sounds like a joke, but npm version doesn't have a way to print the version of the current package.
          # Using python here instead of nodejs because it's too convoluted to just read the whole stdin.
          CURRENT_PKG_VERSION="$(npm version --json | python3 -c 'import json; import sys; print(json.loads(sys.stdin.read()).get("jschardet"))')"
          CURRENT_TAG_VERSION="$(git tag --list 'v*' --sort='-version:refname' | head -1)"
          CURRENT_PUBLISHED_VERSION="$(npm view jschardet version)"
          echo "CURRENT_TAG_VERSION=$CURRENT_TAG_VERSION"
          echo "CURRENT_PKG_VERSION=$CURRENT_PKG_VERSION"
          echo "CURRENT_PUBLISHED_VERSION=$CURRENT_PUBLISHED_VERSION"
          if [ "$CURRENT_PKG_VERSION" != "$CURRENT_PUBLISHED_VERSION" ]; then
            echo "::warning::Current package version doesn't match current published version ($CURRENT_PKG_VERSION ≠ $CURRENT_PUBLISHED_VERSION)"
          fi
          if [ "$CURRENT_TAG_VERSION" != "v$CURRENT_PKG_VERSION" ]; then
            echo "::warning::Current tag version doesn't match current package version ($CURRENT_TAG_VERSION ≠ $CURRENT_PKG_VERSION)"
          fi
          echo "CURRENT_PKG_VERSION=$CURRENT_PKG_VERSION" >> "$GITHUB_ENV"
          echo "CURRENT_TAG_VERSION=$CURRENT_TAG_VERSION" >> "$GITHUB_ENV"
          echo "CURRENT_PUBLISHED_VERSION=$CURRENT_PUBLISHED_VERSION" >> "$GITHUB_ENV"
          echo "SEMVER_UPDATE=${{fromJSON(vars.versions).values[inputs.version]}}" >> "$GITHUB_ENV"
      - name: Version package
        run: |
          npm version ${{env.SEMVER_UPDATE}}
          echo "VERSION=$(git show -s --format=%s)" >> "$GITHUB_ENV"
      - name: Amend with changelog
        run: |
          CHANGELOG="${{runner.temp}}/changelog.txt"
          echo -e "Version ${{env.VERSION}} (${{env.SEMVER_UPDATE}} update)\n" >> "$CHANGELOG"
          echo -e "Changes since ${{env.CURRENT_PKG_VERSION}}:" >> "$CHANGELOG"
          git log --pretty='format:%h %s' ${{env.CURRENT_TAG_VERSION}}..HEAD~1 | grep -v '.yml' | grep -v '\[devop\]' >> "$CHANGELOG"
          echo "" >> "$CHANGELOG"
          BASE_PKG_VERSION="$CURRENT_PUBLISHED_VERSION" ./scripts/show-size-changes.sh dist/* | tee -a "$CHANGELOG"
          git commit --amend -F "$CHANGELOG"
          # Move the version tag to the new amended commit.
          git tag -f -m '${{env.VERSION}}' 'v${{env.VERSION}}'
          git show -s --format=%B
      - name: Push new version
        if: inputs.dry_run == false
        run: git push --atomic origin ${{github.ref_name}} $(git tag --points-at HEAD)
      - name: Publish to npm
        if: inputs.dry_run == false
        run: npm publish
        env:
          NODE_AUTH_TOKEN: ${{secrets.npm_token}}