release.yaml

name: release

on:
  push:
    branches: [main]
    paths: ["CHANGELOG.md"]

permissions: write-all

jobs:
  release:
    runs-on: ubuntu-latest
    env:
      GO_VERSION: "1.23.0"

    steps:
      - uses: Kesin11/actions-timeline@v2

      - uses: actions/checkout@v4

      - name: Setup Go
        uses: actions/setup-go@v5
        with:
          go-version: ${{ env.GO_VERSION }}
          cache: true
          cache-dependency-path: go.sum

      - name: Extract Version
        id: versioning
        run: |
          VERSION="v$(sed -n 's/##\s\([0-9.]*\)\s.*/\1/p' CHANGELOG.md | head -1)"
          echo ::set-output name=version::$VERSION

      - name: Extract changes from prev version
        run: |
          git fetch --prune --unshallow
          PRETAG=$(git tag --sort -v:refname | head -1)
          CURRENTTAG=${{ steps.versioning.outputs.version }}
          echo "## What's Changed in ${CURRENTTAG}" > diff-changelog.txt
          if [ -z "$PRETAG" ]
          then
            cat CHANGELOG.md | sed -e 's/##\s[0-9.]*\s.*//g' >> diff-changelog.txt
          else
            git diff $PRETAG..${{ github.sha }} -- CHANGELOG.md | grep -E '^\+' | grep -v '+++' | sed -e 's/^\+//g' | sed -e 's/##\s[0-9.]*\s.*//g' | sed -e '/^$/d' >> diff-changelog.txt
            echo "" >> diff-changelog.txt
            echo "**Full Changelog**: https://github.com/miyamo2/r2/compare/${PRETAG}...${CURRENTTAG}" >> diff-changelog.txt
          fi

      - name: Release
        uses: softprops/action-gh-release@v2
        with:
          tag_name: ${{ steps.versioning.outputs.version }}
          generate_release_notes: false
          body_path: diff-changelog.txt