name: "C++ Tests on all platforms & compilers"

on:
  workflow_call:
    inputs:
      CONCURRENCY:
        required: true
        type: string
      CHANNEL:
        required: false
        type: string # enum: 'nightly', 'main', or 'pr'

  workflow_dispatch:
    inputs:
      CONCURRENCY:
        required: false
        type: string
        default: "adhoc"
      CHANNEL:
        required: false
        type: string # enum: 'nightly', 'main', or 'pr'

concurrency:
  group: ${{ inputs.CONCURRENCY }}-checks_cpp
  cancel-in-progress: true

defaults:
  run:
    shell: bash --noprofile --norc -euo pipefail {0}

permissions:
  contents: "read"
  id-token: "write"

jobs:
  matrix_prep:
    runs-on: ubuntu-latest
    outputs:
      MATRIX: ${{ steps.set-matrix.outputs.matrix }}
    steps:
      - uses: actions/checkout@v4
        with:
          ref: ${{ github.event_name == 'pull_request' && github.event.pull_request.head.ref || '' }}
      - name: Load C++ test matrix
        id: set-matrix
        run: echo "matrix=$(jq -c . < ./.github/workflows/cpp_matrix_full.json)" >> $GITHUB_OUTPUT

  cpp-tests:
    name: C++ build & test - ${{ matrix.name }}
    timeout-minutes: 60
    needs: matrix_prep
    strategy:
      matrix: ${{ fromJson(needs.matrix_prep.outputs.MATRIX) }}
    runs-on: ${{ matrix.runs_on }}
    steps:
      # Skipping the entire step would apparently require a separate job, not doing that here.
      # Instead we keep checking for the `matrix.pr_ci` flag.
      # See https://stackoverflow.com/questions/77186893/how-can-i-skip-the-whole-job-for-a-matrix-match-in-github-action
      - uses: actions/checkout@v4
        if: ${{ github.event_name != 'pull_request' || matrix.pr_ci != false }}
        with:
          ref: ${{ github.event_name == 'pull_request' && github.event.pull_request.head.ref || '' }}

      - uses: prefix-dev/setup-pixi@v0.10.0
        if: ${{ github.event_name != 'pull_request' || matrix.pr_ci != false }}
        with:
          pixi-version: v0.71.3
          environments: cpp

      - name: Set up Rust
        uses: ./.github/actions/setup-rust
        if: ${{ github.event_name != 'pull_request' || matrix.pr_ci != false }}
        with:
          cache_key: ${{ matrix.cache_key }}
          # Cache will be produced by `reusable_checks/rs-lints`
          save_cache: false
          workload_identity_provider: ${{ secrets.GOOGLE_WORKLOAD_IDENTITY_PROVIDER }}
          service_account: ${{ secrets.GOOGLE_SERVICE_ACCOUNT }}

      # Workaround for ASAN issues on Github images https://github.com/actions/runner-images/issues/9491
      - name: Fix kernel mmap rnd bits
        if: ${{ (github.event_name != 'pull_request' || matrix.pr_ci != false) && runner.os == 'Linux' }}
        # Asan in llvm 14 provided in ubuntu 22.04 is incompatible with
        # high-entropy ASLR in much newer kernels that GitHub runners are
        # using leading to random crashes: https://reviews.llvm.org/D148280
        run: sudo sysctl vm.mmap_rnd_bits=28

      - name: pixi run -e cpp cpp-clean
        if: ${{ github.event_name != 'pull_request' || matrix.pr_ci != false }}
        run: pixi run -e cpp cpp-clean

      - name: pixi run -e cpp cpp-build-all
        if: ${{ github.event_name != 'pull_request' || matrix.pr_ci != false }}
        run: ${{ matrix.extra_env_vars }} RERUN_WERROR=ON pixi run -e cpp cpp-build-all

      - name: pixi run -e cpp cpp-test
        if: ${{ github.event_name != 'pull_request' || matrix.pr_ci != false }}
        run: ${{ matrix.extra_env_vars }} RERUN_WERROR=ON pixi run -e cpp cpp-test

      - name: pixi run -e cpp cpp-build-all-shared-libs
        if: ${{ inputs.CHANNEL == 'nightly' }}
        run: ${{ matrix.extra_env_vars }} RERUN_WERROR=ON pixi run -e cpp cpp-build-all-shared-libs

      - name: additional_commands
        if: ${{ github.event_name != 'pull_request' || matrix.pr_ci != false }}
        run: ${{ matrix.additional_commands }}

  cpp-formatting:
    name: C++ formatting check
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
        with:
          ref: ${{ github.event_name == 'pull_request' && github.event.pull_request.head.ref || '' }}

      - uses: prefix-dev/setup-pixi@v0.10.0
        with:
          pixi-version: v0.71.3
          environments: cpp

      - name: Run clang format on all relevant files
        run: pixi run -e cpp cpp-fmt-check