release.yml

name: release

on:
  workflow_dispatch:
    inputs:
      version:
        description: "New version (e.g. 0.4.0)"
        required: true

permissions:
  contents: write

jobs:
  release:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0
          token: ${{ secrets.PAT_WORKFLOW }}

      - name: Validate version format
        run: |
          if ! echo "${{ inputs.version }}" | grep -qE '^[0-9]+\.[0-9]+\.[0-9]+$'; then
            echo "::error::Version must be in X.Y.Z format"
            exit 1
          fi
          if git tag -l "v${{ inputs.version }}" | grep -q .; then
            echo "::error::Tag v${{ inputs.version }} already exists"
            exit 1
          fi

      - name: Bump version.py
        run: |
          echo '__version__ = "${{ inputs.version }}"' > pygeofilter/version.py

      - name: Update CHANGELOG.md
        env:
          GH_TOKEN: ${{ github.token }}
        run: |
          LAST_TAG=$(git describe --tags --abbrev=0 2>/dev/null || echo "")
          if [ -n "$LAST_TAG" ]; then
            NOTES=$(gh api repos/${{ github.repository }}/releases/generate-notes \
              -f tag_name="v${{ inputs.version }}" \
              -f previous_tag_name="$LAST_TAG" \
              -f target_commitish="main" \
              --jq .body)
          else
            NOTES=$(gh api repos/${{ github.repository }}/releases/generate-notes \
              -f tag_name="v${{ inputs.version }}" \
              -f target_commitish="main" \
              --jq .body)
          fi

          HEADER="# Changelog"
          DATE=$(date +%Y-%m-%d)
          SECTION="## [${{ inputs.version }}](https://github.com/${{ github.repository }}/compare/${LAST_TAG}...v${{ inputs.version }}) ($DATE)"

          {
            echo "$HEADER"
            echo
            echo "$SECTION"
            echo
            echo "$NOTES"
            echo
            # append everything after the "# Changelog" header from the existing file
            tail -n +2 CHANGELOG.md
          } > CHANGELOG.new.md
          mv CHANGELOG.new.md CHANGELOG.md

      - name: Commit, tag, push
        run: |
          git config user.name "github-actions[bot]"
          git config user.email "github-actions[bot]@users.noreply.github.com"
          git add pygeofilter/version.py CHANGELOG.md
          git commit -m "Release ${{ inputs.version }}"
          git tag "v${{ inputs.version }}"
          git push origin HEAD --tags

      - name: Create GitHub Release
        env:
          GH_TOKEN: ${{ github.token }}
        run: |
          gh release create "v${{ inputs.version }}" --generate-notes