ci.yml

name: CI

# PR / manual: three native test jobs (no skipped rows). Push to main: Linux-only (fast).
on:
  push:
    branches: [main]
    paths-ignore:
      - "doc/**"
      - "README.md"
      - "**.md"
      - "LICENSE**"
  pull_request:
    paths-ignore:
      - "doc/**"
      - "README.md"
      - "**.md"
      - "LICENSE**"
  workflow_dispatch:

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

env:
  ZIG_VERSION: "0.16.0"

jobs:
  test:
    name: Tests (${{ matrix.name }})
    strategy:
      fail-fast: false
      matrix:
        include: ${{ github.event_name == 'push' && fromJSON('[{"os":"ubuntu-latest","name":"Linux"}]') || fromJSON('[{"os":"ubuntu-latest","name":"Linux"},{"os":"windows-latest","name":"Windows"},{"os":"macos-14","name":"macOS"}]') }}
    runs-on: ${{ matrix.os }}
    steps:
      - uses: actions/checkout@v4
      - name: Pre-create Zig global cache tmp/
        shell: bash
        run: mkdir -p "$GITHUB_WORKSPACE/zig-global-cache/tmp"
      - uses: mlugg/setup-zig@v2
        with:
          version: ${{ env.ZIG_VERSION }}
          cache-key: ${{ hashFiles('build.zig.zon') }}
      # Zig 0.16's HTTP client doesn't retry on `HttpConnectionClosing` from
      # GitHub. Pre-fetch all deps in a retry loop, separate from the build, so
      # the loop only re-runs the network step. After this step `zig build` runs
      # offline against the populated global cache.
      - name: Fetch dependencies (with retries)
        shell: bash
        env:
          ZIG_GLOBAL_CACHE_DIR: ${{ github.workspace }}/zig-global-cache
        run: |
          n=0
          until [ "$n" -ge 5 ]; do
            zig build --fetch && break
            n=$((n+1))
            echo "Fetch attempt $n failed, sleeping $((n*10))s before retry..."
            sleep $((n*10))
          done
          if [ "$n" -ge 5 ]; then
            echo "All fetch attempts failed"; exit 1
          fi
      - name: Run tests
        shell: bash
        env:
          ZIG_GLOBAL_CACHE_DIR: ${{ github.workspace }}/zig-global-cache
        run: zig build test --summary all

      - name: Fetch wasm dependencies (with retries)
        shell: bash
        env:
          ZIG_GLOBAL_CACHE_DIR: ${{ github.workspace }}/zig-global-cache
        run: |
          n=0
          until [ "$n" -ge 5 ]; do
            zig build --fetch -Dtarget=wasm32-freestanding && break
            n=$((n+1))
            echo "Fetch attempt $n failed, sleeping $((n*10))s before retry..."
            sleep $((n*10))
          done
          if [ "$n" -ge 5 ]; then
            echo "All fetch attempts failed"; exit 1
          fi

      - name: Compile web (wasm) build
        shell: bash
        env:
          ZIG_GLOBAL_CACHE_DIR: ${{ github.workspace }}/zig-global-cache
        run: zig build check-web

      - name: Verify SDK version / ABI fingerprint lock
        shell: bash
        env:
          ZIG_GLOBAL_CACHE_DIR: ${{ github.workspace }}/zig-global-cache
        run: zig build test-sdk-version --summary all