release.yml

name: Release

on:
  push:
    tags:
      - 'v*.*.*'

permissions:
  contents: write

jobs:
  publish:
    name: Publish to Hex
    runs-on: ubuntu-latest

    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Setup Erlang/OTP
        uses: erlef/setup-beam@v1
        with:
          otp-version: '28.1'
          rebar3-version: '3.25.0'

      - name: Verify version matches tag
        run: |
          TAG_VERSION="${GITHUB_REF_NAME#v}"
          FILE_VERSION="$(cat VERSION)"
          if [ "$TAG_VERSION" != "$FILE_VERSION" ]; then
            echo "Tag version ($TAG_VERSION) does not match VERSION file ($FILE_VERSION)"
            exit 1
          fi

      - name: Compile
        run: rebar3 compile

      - name: Build documentation
        run: rebar3 ex_doc

      - name: Verify doc artifacts
        run: |
          test -d doc || (echo "doc directory not created" && exit 1)
          test -f doc/index.html || (echo "doc/index.html not found" && exit 1)
          echo "Documentation built successfully"

      - name: Publish to Hex
        run: rebar3 hex publish -r hexpm --yes
        env:
          HEX_API_KEY: ${{ secrets.HEX_API_KEY }}

      - name: Extract release notes from CHANGELOG
        id: changelog
        run: |
          VERSION="$(cat VERSION)"
          # Extract the section for this version (between its ## header and the next ## or EOF)
          NOTES=$(awk "/^## ${VERSION//./\\.} /{found=1; next} /^## /{if(found) exit} found{print}" CHANGELOG.md)
          # Write to file to avoid quoting issues
          echo "$NOTES" > /tmp/release_notes.md

      - name: Create GitHub release
        uses: softprops/action-gh-release@v2
        with:
          body_path: /tmp/release_notes.md