slinky/.github/workflows/publish.yml

name: Publish Release

on:
  push:
    branches:
      - main
  workflow_dispatch: {}

permissions:
  contents: write

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

      - name: Compute next v1 tag
        id: compute
        uses: actions/github-script@v7
        with:
          script: |
            const owner = context.repo.owner;
            const repo = context.repo.repo;
            const tags = await github.paginate(github.rest.repos.listTags, { owner, repo, per_page: 100 });
            const v1tags = tags
              .map(t => t.name)
              .filter(name => /^v1\.\d+\.\d+$/.test(name));
            let nextPatch = 0;
            let minor = 0;
            if (v1tags.length > 0) {
              let maxPatch = 0;
              for (const name of v1tags) {
                const [, mi, pa] = name.match(/^v1\.(\d+)\.(\d+)$/);
                const m = parseInt(mi, 10);
                const p = parseInt(pa, 10);
                if (m > minor) { minor = m; maxPatch = p; }
                else if (m === minor && p > maxPatch) { maxPatch = p; }
              }
              nextPatch = maxPatch + 1;
            }
            const newTag = `v1.${minor}.${nextPatch}`;
            core.setOutput('tag', newTag);

      - name: Create GitHub Release
        id: create_release
        uses: actions/create-release@v1
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          tag_name: ${{ steps.compute.outputs.tag }}
          release_name: ${{ steps.compute.outputs.tag }}
          draft: false
          prerelease: false

      - name: Update floating v1 tag to latest
        uses: actions/github-script@v7
        with:
          script: |
            const owner = context.repo.owner;
            const repo = context.repo.repo;
            const sha = context.sha;
            const ref = 'tags/v1';
            try {
              await github.rest.git.getRef({ owner, repo, ref });
              await github.rest.git.updateRef({ owner, repo, ref, sha, force: true });
            } catch (e) {
              await github.rest.git.createRef({ owner, repo, ref: `refs/${ref}`, sha });
            }

      - name: Update floating latest tag to latest
        uses: actions/github-script@v7
        with:
          script: |
            const owner = context.repo.owner;
            const repo = context.repo.repo;
            const sha = context.sha;
            const ref = 'tags/latest';
            try {
              await github.rest.git.getRef({ owner, repo, ref });
              await github.rest.git.updateRef({ owner, repo, ref, sha, force: true });
            } catch (e) {
              await github.rest.git.createRef({ owner, repo, ref: `refs/${ref}`, sha });
            }