sync-postypes.yaml

name: Sync POS Tags from Kiwi Upstream

on:
  schedule:
    # Run weekly on Monday at 9:00 AM UTC
    - cron: '0 9 * * 1'
  workflow_dispatch:
    inputs:
      kiwi_version:
        description: 'Kiwi version to sync (e.g., v0.23.2)'
        required: false
        default: ''

permissions:
  contents: write
  pull-requests: write

jobs:
  check-and-sync:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v7

      - name: Install Go
        uses: actions/setup-go@v7
        with:
          go-version-file: go.mod

      - name: Set up Python
        uses: actions/setup-python@v5
        with:
          python-version: '3.12'

      - name: Install dependencies
        run: |
          python -m venv .venv
          source .venv/bin/activate
          pip install tree-sitter tree-sitter-cpp

      - name: Get latest Kiwi version
        id: get_version
        run: |
          if [ -n "${{ github.event.inputs.kiwi_version }}" ]; then
            VERSION="${{ github.event.inputs.kiwi_version }}"
          else
            # Get latest release from GitHub API
            VERSION=$(curl -s https://api.github.com/repos/bab2min/Kiwi/releases/latest | jq -r '.tag_name')
          fi
          echo "version=$VERSION" >> $GITHUB_OUTPUT
          echo "Kiwi version: $VERSION"

      - name: Extract POS tags
        id: extract
        run: |
          source .venv/bin/activate
          python scripts/extract_postags.py ${{ steps.get_version.outputs.version }}

          # Check if there are changes
          if diff -q postype.go postype_generated.go > /dev/null 2>&1; then
            echo "changed=false" >> $GITHUB_OUTPUT
            echo "No changes detected"
          else
            echo "changed=true" >> $GITHUB_OUTPUT
            echo "Changes detected"
          fi

      - name: Generate diff summary
        if: steps.extract.outputs.changed == 'true'
        id: diff
        run: |
          # Generate diff summary
          DIFF=$(diff -u postype.go postype_generated.go || true)
          echo "diff<<EOF" >> $GITHUB_OUTPUT
          echo "$DIFF" >> $GITHUB_OUTPUT
          echo "EOF" >> $GITHUB_OUTPUT

          # Count changes
          ADDED=$(diff postype.go postype_generated.go | grep "^>" | wc -l || echo "0")
          REMOVED=$(diff postype.go postype_generated.go | grep "^<" | wc -l || echo "0")
          echo "added=$ADDED" >> $GITHUB_OUTPUT
          echo "removed=$REMOVED" >> $GITHUB_OUTPUT

      - name: Update files
        if: steps.extract.outputs.changed == 'true'
        run: |
          # Replace postype.go with generated version
          mv postype_generated.go postype.go

          # Update Makefile version
          sed -i "s/KIWI_VERSION := .*/KIWI_VERSION := ${{ steps.get_version.outputs.version }}/" Makefile

      # PRs opened with GITHUB_TOKEN do not trigger CI, so the generated code is
      # verified here instead. Without this a non-compiling postype.go can be
      # proposed and merged unnoticed.
      - name: Verify generated code
        if: steps.extract.outputs.changed == 'true'
        run: |
          make install-kiwi
          make test

      - name: Create Pull Request
        if: steps.extract.outputs.changed == 'true'
        uses: peter-evans/create-pull-request@v7
        with:
          token: ${{ secrets.GITHUB_TOKEN }}
          commit-message: "sync: update POS tags from Kiwi ${{ steps.get_version.outputs.version }}"
          branch: sync/postypes-${{ steps.get_version.outputs.version }}
          delete-branch: true
          title: "sync: update POS tags from Kiwi ${{ steps.get_version.outputs.version }}"
          body: |
            ## POS Tag Sync from Kiwi ${{ steps.get_version.outputs.version }}

            This PR was automatically generated by the POS tag sync workflow.

            ### Changes
            - Added: ${{ steps.diff.outputs.added }} lines
            - Removed: ${{ steps.diff.outputs.removed }} lines

            ### Diff Summary
            ```
            ${{ steps.diff.outputs.diff }}
            ```

            ### Verification
            - [ ] POS tags match C++ source
            - [ ] Tests pass
            - [ ] No breaking changes

            ---
            *This PR was created by [sync-postypes.yaml](.github/workflows/sync-postypes.yaml)*
          labels: |
            automated

      - name: Summary
        if: always()
        run: |
          echo "## Sync Summary" >> $GITHUB_STEP_SUMMARY
          echo "- Kiwi Version: ${{ steps.get_version.outputs.version }}" >> $GITHUB_STEP_SUMMARY
          echo "- Changes Detected: ${{ steps.extract.outputs.changed }}" >> $GITHUB_STEP_SUMMARY
          if [ "${{ steps.extract.outputs.changed }}" == "true" ]; then
            echo "- Added: ${{ steps.diff.outputs.added }} lines" >> $GITHUB_STEP_SUMMARY
            echo "- Removed: ${{ steps.diff.outputs.removed }} lines" >> $GITHUB_STEP_SUMMARY
            echo "- PR Created: Yes" >> $GITHUB_STEP_SUMMARY
          else
            echo "- Status: Already in sync" >> $GITHUB_STEP_SUMMARY
          fi