release.yml

name: Release

on:
  workflow_run:
    workflows: ["CI"]
    branches:
      - master
    types:
      - completed

jobs:
  release:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout code
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Get previous commit SHA
        id: get_previous_commit
        run: |
          LATEST_TAG=$(git describe --tags --abbrev=0)
          if [[ -z "$LATEST_TAG" ]]; then
            echo "No tag found. Failing..."
            exit 1
          fi
          echo "latest_tag=${LATEST_TAG#v}" >> "$GITHUB_ENV" # Remove 'v' prefix from the tag

      - name: Check if version changed and is greater than the previous
        id: version_check
        run: |
          # Compare the current version with the version from the previous commit
          PREVIOUS_NPM_VERSION=${{ env.latest_tag }}
          CURRENT_NPM_VERSION=$(jq -r '.version' package.json)
          CURRENT_CARGO_VERSION=$(awk -F '"' '/^version/ {print $2}' Cargo.toml)
          if [[ "$CURRENT_NPM_VERSION" != "$CURRENT_CARGO_VERSION" ]]; then # Cargo.toml and package.json versions must match
            echo "Mismatch: NPM version ($CURRENT_NPM_VERSION) and Cargo.toml version ($CURRENT_CARGO_VERSION)"
            echo "version_changed=false" >> "$GITHUB_ENV"
          else
            if [[ "$PREVIOUS_NPM_VERSION" ==  "$CURRENT_NPM_VERSION" ]]; then
              echo "version_changed=" >> "$GITHUB_ENV"
            else
              IFS='.' read -ra PREVIOUS_VERSION_PARTS <<< "$PREVIOUS_NPM_VERSION"
              IFS='.' read -ra CURRENT_VERSION_PARTS <<< "$CURRENT_NPM_VERSION"
              VERSION_CHANGED=false
              for i in "${!PREVIOUS_VERSION_PARTS[@]}"; do
                if [[ ${CURRENT_VERSION_PARTS[i]} -gt ${PREVIOUS_VERSION_PARTS[i]} ]]; then
                  VERSION_CHANGED=true
                  break
                elif [[ ${CURRENT_VERSION_PARTS[i]} -lt ${PREVIOUS_VERSION_PARTS[i]} ]]; then
                  break
                fi
              done

              echo "version_changed=$VERSION_CHANGED" >> "$GITHUB_ENV"
              echo "current_version=${CURRENT_NPM_VERSION}" >> "$GITHUB_ENV"
            fi
          fi

      - name: Display result
        run: |
          echo "Version bump detected: ${{ env.version_changed }}"

      - name: Fail if version is lower
        if: env.version_changed == 'false'
        run: exit 1

      - name: Setup Node
        if: env.version_changed == 'true'
        uses: actions/setup-node@v4
        with:
          node-version: 18
          registry-url: "https://registry.npmjs.org"
      - name: Publish to NPM
        if: env.version_changed == 'true'
        env:
          NODE_AUTH_TOKEN: ${{secrets.NPM_TOKEN}}
        run: npm publish

      - name: Setup Rust
        if: env.version_changed == 'true'
        uses: actions-rs/toolchain@v1
        with:
          profile: minimal
          toolchain: stable
          override: true
      - name: Publish to Crates.io
        if: env.version_changed == 'true'
        uses: katyo/publish-crates@v2
        with:
          registry-token: ${{ secrets.CARGO_REGISTRY_TOKEN }}

      - name: Tag versions
        if: env.version_changed == 'true'
        run: |
          git checkout master
          git config user.name github-actions[bot]
          git config user.email github-actions[bot]@users.noreply.github.com
          git tag -d "v${{ env.current_version }}" || true
          git push origin --delete "v${{ env.current_version }}" || true
          git tag -a "v${{ env.current_version }}" -m "Version ${{ env.current_version }}"
          git push origin "v${{ env.current_version }}"