name: wai-quantum-qpu

# The clients for quantum processing services: every client against a service
# that follows its provider's published contract (the fake parses the program
# in the provider's format, runs it on wai-quantum's simulator, and answers in
# the provider's result shape and bit order), certification through the
# fabric, the probe that catches a service with another bit order, and curl
# end to end against a local server. No request leaves the runner.

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

on:
  push:
    branches: [main]
    paths:
      - 'wai/wai-quantum-qpu/**'
      - 'wai/wai-quantum/**'
      - 'rust-toolchain.toml'
      - '.github/workflows/wai-quantum-qpu.yml'
  pull_request:
    paths:
      - 'wai/wai-quantum-qpu/**'
      - 'wai/wai-quantum/**'
      - 'rust-toolchain.toml'
      - '.github/workflows/wai-quantum-qpu.yml'

jobs:
  # Does this pull request's own diff touch the paths below? This forge matches a
  # workflow's `paths:` against the push, so a merge of main into a branch fires the
  # workflow whatever the pull request changes; every job here waits on this answer.
  # A push to main, a schedule, or anything the script cannot determine answers
  # `true` (scripts/pr-touches-paths.py).
  relevant:
    name: does this change touch it
    runs-on: linux-arm64
    outputs:
      run: ${{ steps.gate.outputs.run }}
    steps:
      - uses: actions/checkout@v5
        with:
          fetch-depth: 0
      - id: gate
        run: |
          set -euo pipefail
          r=$(python3 scripts/pr-touches-paths.py .github/workflows/wai-quantum-qpu.yml \
                "${{ github.event.pull_request.base.sha }}" \
                "${{ github.event.pull_request.head.sha }}")
          echo "this change touches wai-quantum-qpu: $r"
          echo "run=$r" >> "$GITHUB_OUTPUT"

  clients:
    name: clients against their contracts (linux)
    needs: relevant
    if: needs.relevant.outputs.run == 'true'
    runs-on: linux
    timeout-minutes: 60
    steps:
      - uses: actions/checkout@v5
      - name: Install Rust 1.98.0
        shell: bash
        run: |
          export PATH="$HOME/.cargo/bin:$PATH"
          command -v rustup >/dev/null 2>&1 || \
            curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y --profile minimal --default-toolchain 1.98.0
          rustup toolchain install 1.98.0 --profile minimal --component clippy
          rustup default 1.98.0
          echo "$HOME/.cargo/bin" >> "$GITHUB_PATH"
      - name: Tests
        shell: bash
        working-directory: wai/wai-quantum-qpu
        run: |
          set -euo pipefail
          command -v curl >/dev/null || { echo "::error::no curl: the transport test would pass over nothing"; exit 1; }
          cargo test --locked 2>&1 | tee "$RUNNER_TEMP/test.log"
          grep -qE '^test result: ok\. 8 passed; 0 failed' "$RUNNER_TEMP/test.log" || { echo "::error::not every client test ran and passed"; exit 1; }
          grep -q '^test curl_carries_a_request_to_a_server_and_back \.\.\. ok$' "$RUNNER_TEMP/test.log" || { echo "::error::the transport test did not run"; exit 1; }
      - name: Clippy
        shell: bash
        working-directory: wai/wai-quantum-qpu
        run: cargo clippy --locked --all-targets --no-deps -- -D warnings