name: qa

# ── The qa gate: "is this production worth?" ────────────────────────────────
#
# dev -> qa -> main.
#
# `dev` is for committing often. ci.yml answers "is it green" in minutes with
# fmt, clippy and the unit suite, so a mistake surfaces while it is still cheap
# to fix. `qa` is the release-candidate branch, and THIS workflow is the claim
# that a commit is production worth: everything expensive that can run without
# physical media. `main` only ever receives a qa that went green here.
#
# Sibling repos are checked out at `qa`, NOT `dev`. A qa run that resolved its
# dependencies from dev tips would be validating a combination that is not the
# one being released, which is the exact failure this branch exists to prevent.
# The shared checkout-siblings composite resolves qa->qa from the caller branch.
#
# What this gate CANNOT cover: `disc://` and real `iso://` need physical media,
# and no hosted runner has an optical drive or the image hoard. Those run on a
# self-hosted runner (see the media job at the end) and are the one leg that
# stays on hardware.
on:
  push:
    branches: [qa]
  workflow_dispatch:

# Supersede an in-progress qa run when a newer candidate lands on the branch.
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

jobs:
  # Single source of truth for the MSRV — see ci.yml. Jobs that build/test AT
  # the MSRV read needs.resolve-msrv.outputs.v from Cargo.toml's rust-version;
  # clippy (cross-lint) runs on stable instead.
  resolve-msrv:
    runs-on: ubuntu-latest
    outputs:
      v: ${{ steps.msrv.outputs.v }}
    steps:
      - uses: actions/checkout@v5
      - id: msrv
        shell: bash
        run: echo "v=$(grep -m1 '^rust-version' Cargo.toml | sed -E 's/.*\"([^\"]+)\".*/\1/')" >> "$GITHUB_OUTPUT"

  # ── Name the candidate ────────────────────────────────────────────────
  #
  # Every push to `qa` is a release candidate, so every push gets a tag:
  # v<version>-rc<N>, N incrementing. That is the answer to "which build is on
  # qa right now, and is it the one I tested?" — a question that otherwise gets
  # answered from memory.
  #
  # This runs FIRST and does not depend on the gates, deliberately. A red
  # candidate needs a name more than a green one does: "rc3 failed
  # release-tests on windows" is a sentence you can act on; "qa is red" is not.
  # Red on qa is a working gate, not an incident — it is the branch saying this
  # is not production worth yet. Fix on dev, get dev green, push qa again.
  #
  # release.yml excludes v*-rc* so a candidate never publishes a release.
  rc-tag:
    runs-on: ubuntu-latest
    permissions:
      contents: write
    steps:
      - uses: actions/checkout@v5
        with:
          fetch-depth: 0
      - name: Stamp the next rc
        shell: bash
        run: |
          set -euo pipefail
          v=$(sed -n 's/^version = "\(.*\)"/\1/p' Cargo.toml | head -1)
          [ -n "$v" ] || { echo "no version in Cargo.toml" >&2; exit 1; }
          # Numeric sort on the rc ordinal: -rc10 must beat -rc9, and a plain
          # lexical sort gets that backwards from the tenth candidate on.
          n=$(git tag -l "v$v-rc*" | sed "s|^v$v-rc||" | sort -n | tail -1)
          tag="v$v-rc$(( ${n:-0} + 1 ))"
          git tag "$tag"
          git push origin "$tag"
          echo "### Candidate \`$tag\`" >> "$GITHUB_STEP_SUMMARY"

  # The debug suite runs on every dev push. Release is a DIFFERENT build:
  # overflow checks are off, debug_assert! is compiled out, and inlining
  # changes what the optimiser can prove. A test that only passes in debug is
  # a test that never guarded the binary anyone actually ships.
  release-tests:
    needs: resolve-msrv
    strategy:
      fail-fast: false
      matrix:
        os: ['ubuntu-latest', 'macos-latest']
    runs-on: ${{ matrix.os }}
    steps:
      - uses: actions/checkout@v5
        with:
          path: freemkv-keysources
      - uses: freemkv/.github/.github/actions/checkout-siblings@v1
        with:
          checkout: libfreemkv freemkv-unlock
          patch: libfreemkv
          self: freemkv-keysources
      - uses: dtolnay/rust-toolchain@master
        with:
          toolchain: ${{ needs.resolve-msrv.outputs.v }}
      - uses: Swatinem/rust-cache@v2
        with:
          workspaces: freemkv-keysources
      - run: cargo test --release --tests
        working-directory: freemkv-keysources

  # clippy's output is target-dependent: cfg-gated code only gets linted on
  # the target it compiles for. Linting solely on the dev machine's host
  # target is how a lint that CI rejects reaches a push.
  cross-lint:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v5
        with:
          path: freemkv-keysources
      - uses: freemkv/.github/.github/actions/checkout-siblings@v1
        with:
          checkout: libfreemkv freemkv-unlock
          patch: libfreemkv
          self: freemkv-keysources
      - uses: dtolnay/rust-toolchain@stable
        with:
          components: clippy
      - uses: Swatinem/rust-cache@v2
        with:
          workspaces: freemkv-keysources
      - run: rustup target add x86_64-unknown-linux-gnu
      - run: cargo clippy --all-targets --target x86_64-unknown-linux-gnu -- -D warnings
        working-directory: freemkv-keysources

  # Windows compiles the tests but does not run them, matching the policy
  # ci.yml already set. The value here is codegen: the #[cfg(windows)] halves
  # of the SCSI transport and platform layers compile on no other runner, so
  # without this they are first built at release time.
  windows-build:
    needs: resolve-msrv
    runs-on: windows-latest
    steps:
      - uses: actions/checkout@v5
        with:
          path: freemkv-keysources
      - uses: freemkv/.github/.github/actions/checkout-siblings@v1
        with:
          checkout: libfreemkv freemkv-unlock
          patch: libfreemkv
          self: freemkv-keysources
      - uses: dtolnay/rust-toolchain@master
        with:
          toolchain: ${{ needs.resolve-msrv.outputs.v }}
      - uses: Swatinem/rust-cache@v2
        with:
          workspaces: freemkv-keysources
      - run: cargo build --release --tests
        working-directory: freemkv-keysources