update-changelog.yml

name: Update Changelog

on:
  push:
    branches: [main]

permissions:
  contents: write
  pull-requests: write

jobs:
  update-changelog:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout repository
        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4
        with:
          fetch-depth: 2 # We need at least 2 commits to get the last one
          persist-credentials: true

      - name: Get commit message
        id: get-commit-msg
        shell: bash
        # zizmor-disable-next-line template-injection
        run: |
          COMMIT_MSG=$(git log -1 --pretty=%B)
          {
            echo "commit_msg=${COMMIT_MSG}"
            echo "commit_type=$(echo "${COMMIT_MSG}" | grep -o '^feat\|^fix\|^docs\|^style\|^refactor\|^perf\|^test\|^build\|^ci\|^chore' || echo 'other')"
            echo "commit_scope=$(echo "${COMMIT_MSG}" | grep -o '([^)]*)')"
            echo "commit_desc=$(echo "${COMMIT_MSG}" | sed -E 's/^(feat|fix|docs|style|refactor|perf|test|build|ci|chore)(\([^)]*\))?:\s*//')"
          } >> "$GITHUB_OUTPUT"

      - name: Update Changelog
        id: update-changelog
        shell: bash
        # zizmor-disable-next-line template-injection
        env:
          COMMIT_TYPE_ENV: ${{ steps.get-commit-msg.outputs.commit_type }}
          COMMIT_SCOPE_ENV: ${{ steps.get-commit-msg.outputs.commit_scope }}
          COMMIT_DESC_ENV: ${{ steps.get-commit-msg.outputs.commit_desc }}
        run: |
          # Assign environment variables directly to shell variables
          COMMIT_TYPE="$COMMIT_TYPE_ENV"
          COMMIT_SCOPE="$COMMIT_SCOPE_ENV"
          COMMIT_DESC="$COMMIT_DESC_ENV"

          # Clean up scope format for display
          SCOPE=""
          if [ -n "$COMMIT_SCOPE" ]; then
            SCOPE=$(echo "$COMMIT_SCOPE" | sed -E 's/^\(([^)]*)\)$/\1/')
            SCOPE=" ($SCOPE)"
          fi

          # Format changelog entry based on commit type
          ENTRY="- $COMMIT_DESC$SCOPE"

          # Determine which section to add the entry to
          SECTION=""
          case "$COMMIT_TYPE" in
            feat)
              SECTION="Added"
              ;;
            fix)
              SECTION="Fixed"
              ;;
            docs)
              SECTION="Documentation"
              ;;
            style|refactor)
              SECTION="Changed"
              ;;
            perf)
              SECTION="Performance"
              ;;
            test|build|ci|chore)
              # Skip these commit types for changelog
              echo "Skipping changelog update for commit type: $COMMIT_TYPE"
              exit 0
              ;;
            *)
              # For other commit types, put in Changed section
              SECTION="Changed"
              ;;
          esac

          # Prepare a new branch
          BRANCH_NAME="changelog/update-$COMMIT_TYPE-$(date +%Y%m%d%H%M%S)"
          git checkout -b "$BRANCH_NAME"

          # Check if the section exists, if not, create it
          if ! grep -q "### $SECTION" CHANGELOG.md; then
            # Add the section after "## [Unreleased]" line
            sed -i "/## \[Unreleased\]/a \\\n### $SECTION\n" CHANGELOG.md
          fi

          # Add entry to the section
          # Ensure ENTRY is quoted to handle potential special characters if it were used in a more complex sed command,
          # but for 'a' (append), it's generally safer.
          sed -i "/### $SECTION/a $ENTRY" CHANGELOG.md

          # Check if any changes were made
          if git diff --quiet CHANGELOG.md; then
            echo "No changes made to CHANGELOG.md"
            # No temp files to clean up here for commit details if exiting early
            exit 0
          fi

          # Write outputs directly to GITHUB_OUTPUT using a block redirect
          {
            echo "changelog_updated=true"
            echo "branch_name=$BRANCH_NAME"
            echo "commit_type=$COMMIT_TYPE"
            echo "commit_desc=$COMMIT_DESC"
            echo "section=$SECTION"
          } >> "$GITHUB_OUTPUT"

          # No temp files like commit_type.txt, etc. were created in this block anymore

      - name: Set up git identity for Claude
        if: steps.update-changelog.outputs.changelog_updated == 'true'
        shell: bash
        # zizmor-disable-next-line template-injection
        run: |
          git config --local user.email "noreply@anthropic.com"
          git config --local user.name "Claude"

      - name: Commit changes
        if: steps.update-changelog.outputs.changelog_updated == 'true'
        shell: bash
        # zizmor-disable-next-line template-injection
        env:
          COMMIT_TYPE_ENV: ${{ steps.get-commit-msg.outputs.commit_type }}
          COMMIT_SCOPE_ENV: ${{ steps.get-commit-msg.outputs.commit_scope }}
          BRANCH_NAME_ENV: ${{ steps.update-changelog.outputs.branch_name }}
        run: |
          # Assign environment variables directly to shell variables
          COMMIT_TYPE="$COMMIT_TYPE_ENV"
          COMMIT_SCOPE="$COMMIT_SCOPE_ENV"
          BRANCH_NAME="$BRANCH_NAME_ENV"

          git add CHANGELOG.md
          git commit -m "docs(changelog): update for ${COMMIT_TYPE}${COMMIT_SCOPE}"
          git push --set-upstream origin "$BRANCH_NAME"

          # No temp files to clean up here

      - name: Create Pull Request
        if: steps.update-changelog.outputs.changelog_updated == 'true'
        uses: actions/github-script@v7
        with:
          github-token: ${{ secrets.GITHUB_TOKEN }}
          script: |
            const commitType = process.env.COMMIT_TYPE;
            const commitDesc = process.env.COMMIT_DESC;
            const section = process.env.SECTION;
            const branchName = process.env.BRANCH_NAME;

            try {
              const pr = await github.rest.pulls.create({
                owner: context.repo.owner,
                repo: context.repo.repo,
                title: `docs(changelog): Update ${section} section for ${commitType} changes`,
                head: branchName,
                base: 'main',
                body: `This PR was automatically generated to update the CHANGELOG.md file.

                ## Changes

                Added to the **${section}** section:
                \`\`\`
                - ${commitDesc}
                \`\`\`

                This change reflects the latest commit to the main branch.

                ---

                🤖 Generated with [Claude Code](https://claude.ai/code)`
              });

              console.log(`Pull Request created: ${pr.data.html_url}`);

            } catch (error) {
              console.error('Error creating pull request:', error);
              core.setFailed('Failed to create pull request');
            }
        env:
          COMMIT_TYPE: ${{ steps.update-changelog.outputs.commit_type }}
          COMMIT_DESC: ${{ steps.update-changelog.outputs.commit_desc }}
          SECTION: ${{ steps.update-changelog.outputs.section }}
          BRANCH_NAME: ${{ steps.update-changelog.outputs.branch_name }}