name: Release

on:
  push:
    tags:
      - 'v*'

permissions:
  contents: write

jobs:
  verify:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v5
      - name: Verify Cargo.toml version matches tag
        run: |
          CARGO_VER="v$(grep '^version' Cargo.toml | head -1 | sed 's/.*"\(.*\)"/\1/')"
          if [ "$CARGO_VER" != "${{ github.ref_name }}" ]; then
            echo "::error::Cargo.toml says $CARGO_VER but tag is ${{ github.ref_name }}"
            exit 1
          fi
          echo "Version match: $CARGO_VER"

  # Tests run as a PARALLEL TRIPWIRE: they fail the run if they fail, but the
  # publish/release jobs do NOT `needs:` this job. The tag decision was already
  # gated by the local precommit (same Rust 1.86, same commit). Binary consumers
  # (freemkv/autorip/bdemu) git-tag-pin libfreemkv and therefore start building
  # the instant this tag exists — so this test job and the crates.io publish
  # below must NOT sit on their critical path.
  test:
    needs: verify
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v5
      - uses: dtolnay/rust-toolchain@1.86.0
      - uses: Swatinem/rust-cache@v2
      # libfreemkv is a library — Cargo.lock isn't tracked, so --locked
      # would always fail (no lockfile to lock against on a fresh runner).
      - run: cargo test

  # crates.io publish is an INDEPENDENT job: it serves EXTERNAL consumers only.
  # The freemkv binaries no longer depend on it (they git-tag-pin libfreemkv via
  # a committed [patch.crates-io]), so this publish runs in parallel with their
  # release builds rather than gating them. It `needs: [verify, test]` so a
  # failing test suite still blocks publication to crates.io — external
  # consumers who `cargo add libfreemkv` must never receive a release whose
  # tests were failing. (The two upstream jobs run in parallel, so this gate
  # does not serialize publish behind test beyond their own completion.)
  publish:
    needs: [verify, test]
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v5
      - uses: dtolnay/rust-toolchain@1.86.0
      - uses: Swatinem/rust-cache@v2
      # --no-verify: CI already compiled this exact commit (in the `test` job
      # and on every push via ci.yml). cargo publish's default re-verify does a
      # full cold release build of the packaged tarball, which here is pure
      # redundant work (~a cold lib build). Skip it.
      - name: Publish to crates.io
        run: cargo publish --no-verify
        env:
          CARGO_REGISTRY_TOKEN: ${{ secrets.CARGO_REGISTRY_TOKEN }}

  release:
    # Only needs `verify`; the GitHub Release can be cut as soon as the version
    # check passes, in parallel with test + publish.
    needs: verify
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v5
      - name: Create GitHub Release
        uses: softprops/action-gh-release@v2
        with:
          generate_release_notes: true
