name: CI

on:
  push:
    # dev -> qa -> main. `dev` is where work lands and is meant to be pushed
    # to often: these are the FAST checks, so a mistake surfaces in minutes.
    # `qa` is the release candidate — it runs these too, plus the expensive
    # suite in qa.yml. `main` only ever moves at release time, to a tagged
    # commit that was already green on qa.
    branches: [main, dev, qa]
  pull_request:

# Rapid dev pushes supersede their own in-progress runs instead of stacking.
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

# WHY THE SIBLING CHECKOUTS — this is NOT a monorepo.
#
# The committed Cargo.toml resolves libfreemkv from a git TAG (it is off
# crates.io). That means CI was building this branch against the LAST RELEASE
# of libfreemkv, never against libfreemkv's dev tip — so a coordinated change
# across the two repos could not be verified until release-orchestrate.yml cut the tags.
# Green here meant "compiles against last month's library".
#
# The fix mirrors the developer's local layout via the shared composite
# freemkv/.github//actions/checkout-siblings: every sibling repo is checked out
# into a subdirectory of $GITHUB_WORKSPACE, reproducing
# ~/Developer/freemkv/{freemkv-keysources,libfreemkv,freemkv-unlock}, and a
# generated .cargo/config.toml redirects the git-tag patch to those paths.
# Config-level [patch.crates-io] wins over the manifest one, which is the same
# mechanism local development already uses (see the note in Cargo.toml).
#
# Subdirectories rather than `../libfreemkv` because actions/checkout refuses
# any `path:` outside $GITHUB_WORKSPACE, and the workspace IS the repo dir.
# Repos stay separate, tags stay separate, the release cascade is untouched.
#
# libfreemkv path-deps ../freemkv-unlock, which resolves to the workspace root
# under this layout — hence the third checkout.
#
# `--locked` is deliberately absent: Cargo.lock is now committed (issue #15) and
# the `deny` job audits the resolved graph, but CI's sibling path-patch layout
# resolves the freemkv crates as path packages, which `--locked` can't satisfy —
# the same reason the binary crates omit it. The lock that has to hold is the one
# release-orchestrate.yml regenerates in each consuming binary.

jobs:
  # Single source of truth for the MSRV — read rust-version from Cargo.toml once
  # and export it; MSRV-bound jobs consume needs.resolve-msrv.outputs.v. clippy
  # runs on stable instead (see CI.md's Toolchain policy).
  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"

  # CI owns the changelog: main may never carry a released version without a
  # CHANGELOG.md entry for it. The release orchestrator dates an existing
  # `## [X.Y.Z]` heading — it does NOT invent one — so a version bump that
  # forgot its changelog entry must fail here rather than ship a blank release.
  # Hard-fails on main (and PRs targeting main); warns elsewhere so an
  # in-progress dev/qa branch whose entry isn't written yet is not blocked.
  changelog:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v5
      - name: Require a CHANGELOG entry for the crate version on main
        shell: bash
        run: |
          set -euo pipefail
          version=$(grep -m1 '^version = ' Cargo.toml | sed -E 's/.*"([^"]+)".*/\1/')
          if grep -qE "^## \[${version}\]" CHANGELOG.md; then
            echo "CHANGELOG.md has an entry for ${version}."
            exit 0
          fi
          msg="CHANGELOG.md has no '## [${version}]' entry"
          if [ "${GITHUB_REF_NAME:-}" = "main" ] || [ "${GITHUB_BASE_REF:-}" = "main" ]; then
            echo "::error::${msg} — main requires a changelog entry for the released version."
            exit 1
          fi
          echo "::warning::${msg} (allowed on ${GITHUB_REF_NAME:-unknown}; required before it can reach main)."

  lint:
    needs: resolve-msrv
    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 freemkv-unlock
          self: freemkv-keysources
      # fmt runs on the MSRV pin; clippy runs on stable so new-lint debt is a
      # blocking gate the pinned toolchain would hide. Stable is installed first
      # for clippy; the MSRV pin goes second so it stays fmt's default toolchain.
      - uses: dtolnay/rust-toolchain@stable
        with:
          components: clippy
      - uses: dtolnay/rust-toolchain@master
        with:
          toolchain: ${{ needs.resolve-msrv.outputs.v }}
          components: rustfmt
      - uses: Swatinem/rust-cache@v2
        with:
          workspaces: freemkv-keysources
      - run: cargo fmt --check
        working-directory: freemkv-keysources
      # --all-targets so the test code is linted too, not just the library.
      - run: cargo +stable clippy --all-targets -- -D warnings
        working-directory: freemkv-keysources

  test:
    needs: resolve-msrv
    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 freemkv-unlock
          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 --tests
        working-directory: freemkv-keysources

  # Dependency-audit gate. Mirrors the `test` job's sibling-checkout layout and
  # generated .cargo/config.toml so `cargo metadata` resolves the git-tag patch
  # to the local sibling paths; cargo-deny then audits advisories, bans,
  # licenses, and sources against the committed deny.toml.
  deny:
    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 freemkv-unlock
          self: freemkv-keysources
      - uses: dtolnay/rust-toolchain@stable
      - uses: taiki-e/install-action@cargo-deny
      # Run from the repo dir so the generated .cargo/config.toml path patches apply.
      - run: cargo deny --all-features check advisories bans licenses sources
        working-directory: freemkv-keysources

  # This crate ships wherever freemkv and autorip ship, and it drags in all of
  # libfreemkv's platform code (SCSI transports included). Build the tests, not
  # `cargo check` — check skips codegen and never compiles test-only code.
  check-macos:
    # dev is the FAST lane: this job still runs, but on the release-candidate
    # branches rather than on every push to dev. Nothing is deleted and no
    # platform stops being checked before a release -- qa.yml independently
    # covers macOS and Windows, and the jobs unique to this file (the Intel
    # macOS build, the Windows release build) run here on qa and main. A push
    # to dev is meant to be cheap and frequent; waiting on three runner pools
    # to agree is what a release candidate is for.
    #
    # `if` SKIPS the job (it does not queue). A queued job would be far worse
    # than a slow one: a never-scheduled job leaves the run pending forever, so
    # the branch's required checks never report complete.
    needs: resolve-msrv
    if: github.ref_name == 'qa' || github.ref_name == 'main'
    runs-on: macos-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 freemkv-unlock
          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 --tests
        working-directory: freemkv-keysources

  # Additive, NON-REQUIRED coverage. Mirrors the `test` job's sibling-checkout
  # layout and pinned toolchain (nothing in the release cascade depends on it,
  # and codecov upload is tokenless with fail_ci_if_error:false, so a flaky
  # upload never reddens the run). `--locked` is deliberately absent here for
  # the same reason it is in `test`: CI's sibling path-patch layout resolves the
  # freemkv crates as path packages, which `--locked` can't satisfy.
  coverage:
    needs: resolve-msrv
    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 freemkv-unlock
          self: freemkv-keysources
      - uses: dtolnay/rust-toolchain@master
        with:
          toolchain: ${{ needs.resolve-msrv.outputs.v }}
          components: llvm-tools-preview
      - uses: Swatinem/rust-cache@v2
        with:
          workspaces: freemkv-keysources
      - uses: taiki-e/install-action@cargo-llvm-cov
      - run: cargo llvm-cov --workspace --ignore-run-fail --lcov --output-path lcov.info
        working-directory: freemkv-keysources
      - uses: codecov/codecov-action@v7
        with:
          files: freemkv-keysources/lcov.info
          slug: freemkv/freemkv-keysources
          fail_ci_if_error: false
          token: ${{ secrets.CODECOV_TOKEN }}

  check-windows:
    # dev is the FAST lane: this job still runs, but on the release-candidate
    # branches rather than on every push to dev. Nothing is deleted and no
    # platform stops being checked before a release -- qa.yml independently
    # covers macOS and Windows, and the jobs unique to this file (the Intel
    # macOS build, the Windows release build) run here on qa and main. A push
    # to dev is meant to be cheap and frequent; waiting on three runner pools
    # to agree is what a release candidate is for.
    #
    # `if` SKIPS the job (it does not queue). A queued job would be far worse
    # than a slow one: a never-scheduled job leaves the run pending forever, so
    # the branch's required checks never report complete.
    needs: resolve-msrv
    if: github.ref_name == 'qa' || github.ref_name == 'main'
    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 freemkv-unlock
          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 --tests
        working-directory: freemkv-keysources