ci.yml

name: CI Core

concurrency:
  group: ci-${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

on:
  push:
    branches: [main, dev, "feature/**"]
  pull_request:
    branches: [main, dev]

jobs:
  test-pr:
    if: >
      github.event_name == 'pull_request' &&
      !(github.event.pull_request.head.ref == 'dev' && github.event.pull_request.base.ref == 'main')
    name: PR / Tests (ubuntu)
    runs-on: ubuntu-latest

    steps:
      - name: Checkout
        uses: actions/checkout@v4
        with:
          submodules: recursive

      - name: Setup Bun
        uses: oven-sh/setup-bun@v2
        with:
          bun-version: latest

      - name: Install dependencies
        run: bun install

      - name: Run tests
        # Fast PR validation on Linux only.
        run: bun test test/

  test-merge:
    if: github.event_name == 'push' && (github.ref == 'refs/heads/main' || github.ref == 'refs/heads/dev')
    name: Push / Tests (${{ matrix.os }})
    runs-on: ${{ matrix.os }}
    strategy:
      fail-fast: false
      matrix:
        os: [ubuntu-latest, macos-latest, windows-latest]

    steps:
      - name: Checkout
        uses: actions/checkout@v4
        with:
          submodules: recursive

      - name: Setup Bun
        uses: oven-sh/setup-bun@v2
        with:
          bun-version: latest

      - name: Install dependencies
        run: bun install

      - name: Run tests
        # Full cross-platform test matrix for merge branches.
        run: bun test test/

  dev-draft-release:
    name: Push(dev) / Draft Release
    if: github.event_name == 'push' && github.ref == 'refs/heads/dev'
    needs: test-merge
    runs-on: ubuntu-latest
    permissions:
      contents: write

    steps:
      - name: Checkout
        uses: actions/checkout@v4
        with:
          fetch-depth: 0
          submodules: recursive

      - name: Setup Bun
        uses: oven-sh/setup-bun@v2
        with:
          bun-version: latest

      - name: Install dependencies
        run: bun install

      - name: Compute dev tag
        id: meta
        run: |
          bun run scripts/release-meta.ts --allow-invalid --github-output "$GITHUB_OUTPUT"
          DEV_TAG="${{ steps.meta.outputs.next_version }}-dev.${{ github.run_number }}"
          echo "dev_tag=${DEV_TAG}" >> "$GITHUB_OUTPUT"

      - name: Remove previous dev draft releases and tags
        uses: actions/github-script@v7
        with:
          script: |
            const { owner, repo } = context.repo;

            const releases = await github.paginate(github.rest.repos.listReleases, {
              owner,
              repo,
              per_page: 100,
            });

            for (const release of releases) {
              const isDevTag = /-dev\.\d+$/.test(release.tag_name || "");
              if (isDevTag && release.draft) {
                await github.rest.repos.deleteRelease({
                  owner,
                  repo,
                  release_id: release.id,
                });
              }
            }

            const refs = await github.paginate(github.rest.git.listMatchingRefs, {
              owner,
              repo,
              ref: "tags/v",
              per_page: 100,
            });
            for (const ref of refs) {
              const tagName = ref.ref.replace("refs/tags/", "");
              if (/-dev\.\d+$/.test(tagName)) {
                await github.rest.git.deleteRef({
                  owner,
                  repo,
                  ref: `tags/${tagName}`,
                }).catch(() => {});
              }
            }

      - name: Create draft prerelease
        uses: softprops/action-gh-release@v2
        with:
          tag_name: ${{ steps.meta.outputs.dev_tag }}
          target_commitish: ${{ github.sha }}
          name: Dev Draft ${{ steps.meta.outputs.dev_tag }}
          body: ${{ steps.meta.outputs.release_notes }}
          generate_release_notes: false
          draft: true
          prerelease: true

  auto-release:
    name: Push(main) / Auto Release
    if: github.event_name == 'push' && github.ref == 'refs/heads/main'
    needs: test-merge
    runs-on: ubuntu-latest
    permissions:
      contents: write

    steps:
      - name: Checkout
        uses: actions/checkout@v4
        with:
          fetch-depth: 0
          submodules: recursive

      - name: Check if already tagged
        id: check
        run: |
          # Skip if this commit already has a stable version tag
          for tag in $(git tag --points-at HEAD 2>/dev/null); do
            if echo "$tag" | grep -qE '^v[0-9]+\.[0-9]+\.[0-9]+$'; then
              echo "skip=true" >> "$GITHUB_OUTPUT"
              echo "Commit already tagged as $tag, skipping."
              exit 0
            fi
          done
          echo "skip=false" >> "$GITHUB_OUTPUT"

      - name: Setup Bun
        if: steps.check.outputs.skip != 'true'
        uses: oven-sh/setup-bun@v2
        with:
          bun-version: latest

      - name: Install dependencies
        if: steps.check.outputs.skip != 'true'
        run: bun install

      - name: Compute release metadata
        if: steps.check.outputs.skip != 'true'
        id: meta
        run: |
          bun run scripts/release-meta.ts --allow-invalid --github-output "$GITHUB_OUTPUT"

          # Squash merges lose individual commit types, so if bump is
          # "none" but there are unreleased commits, default to patch.
          BUMP=$(grep '^bump=' "$GITHUB_OUTPUT" | cut -d= -f2)
          COUNT=$(grep '^commit_count=' "$GITHUB_OUTPUT" | cut -d= -f2)
          if [ "$BUMP" = "none" ] && [ "$COUNT" -gt 0 ]; then
            echo "Bump was 'none' with $COUNT commits — overriding to 'patch'"
            LATEST=$(git tag --list 'v*.*.*' --sort=-version:refname \
              | grep -E '^v[0-9]+\.[0-9]+\.[0-9]+$' | head -1)
            if [ -n "$LATEST" ]; then
              IFS='.' read -r MAJ MIN PAT <<< "${LATEST#v}"
              NEXT="v${MAJ}.${MIN}.$((PAT + 1))"
            else
              NEXT="v0.1.0"
            fi
            echo "next_version=${NEXT}" >> "$GITHUB_OUTPUT"
            echo "bump=patch" >> "$GITHUB_OUTPUT"
          fi

      - name: Create release
        if: steps.check.outputs.skip != 'true' && steps.meta.outputs.bump != 'none'
        uses: softprops/action-gh-release@v2
        with:
          tag_name: ${{ steps.meta.outputs.next_version }}
          target_commitish: ${{ github.sha }}
          name: ${{ steps.meta.outputs.next_version }}
          body: ${{ steps.meta.outputs.release_notes }}
          generate_release_notes: false
          draft: false
          prerelease: false