name: ci

on:
  push:
    branches: [main]
  pull_request:
  workflow_dispatch:

permissions:
  contents: read

jobs:
  test:
    name: node ${{ matrix.node }} / ${{ matrix.os }}
    runs-on: ${{ matrix.os }}
    strategy:
      fail-fast: false
      matrix:
        os: [ubuntu-latest, windows-latest, macos-latest]
        node: [20, 22, 24]
    steps:
      - uses: actions/checkout@v4

      - uses: actions/setup-node@v4
        with:
          node-version: ${{ matrix.node }}

      # Print the real interpreter/OS so a red matrix cell (or a platform-
      # specific test skip) is attributable to the runner it happened on.
      - name: Platform info
        shell: bash
        run: node -p "process.platform + '/' + process.arch + ' node ' + process.version"

      # `shell: bash` keeps the test-file glob identical on all three runners
      # (Linux, macOS and Git Bash on Windows all expand `test/*.test.mjs`).
      # The expressions used here are POSIX and stay compatible with the
      # bash 3.2 that macOS still ships.
      - name: Engine tests (zero dependencies)
        shell: bash
        run: node --test test/*.test.mjs

      - name: DSH adapter tests (mocked session/context)
        shell: bash
        run: node --test test-adapter/*.test.mjs

      - name: End-to-end simulation
        shell: bash
        run: node test/simulate.mjs

      - name: CLI smoke test
        shell: bash
        run: node engine/cli.mjs --help

      # No DSH session logs on runners: the session-log check reports a WARN and
      # the tool still exits 0 — this only proves the shipped CLI runs end to end
      # on Linux, Windows and macOS alike.
      - name: Self-check smoke test
        shell: bash
        run: node tools/selfcheck.mjs