name: GNS Transport Bridge

on:
  push:
    paths:
      - "server/native_transport/**"
      - ".github/workflows/gns-transport.yml"
  pull_request:
    paths:
      - "server/native_transport/**"
      - ".github/workflows/gns-transport.yml"

permissions:
  contents: read

jobs:
  linux:
    name: Linux native GNS bridge
    runs-on: [self-hosted, Linux, X64, co-server]
    steps:
      - uses: actions/checkout@11d5960a326750d5838078e36cf38b85af677262
        with:
          persist-credentials: false

      - name: Verify build dependencies
        run: |
          missing=0
          for tool in cmake ninja protoc; do
            command -v "$tool" >/dev/null 2>&1 || { echo "::error::missing build dependency: $tool"; missing=1; }
          done
          test -f /usr/include/openssl/ssl.h || { echo "::error::missing libssl-dev headers"; missing=1; }
          test "$missing" -eq 0

      - name: Fetch pinned GameNetworkingSockets
        run: |
          GNS_SHA=f4525e39ee10f6b45181fd92d01fee75f7d71756
          rm -rf /tmp/co-gns-src
          git init /tmp/co-gns-src
          git -C /tmp/co-gns-src remote add origin https://github.com/ValveSoftware/GameNetworkingSockets.git
          git -C /tmp/co-gns-src fetch --depth 1 origin "$GNS_SHA"
          git -C /tmp/co-gns-src checkout --detach FETCH_HEAD
          test "$(git -C /tmp/co-gns-src rev-parse HEAD)" = "$GNS_SHA"

      - name: Build and run native bridge tests
        run: |
          cmake -S server/native_transport -B /tmp/co-server-gns-build -G Ninja \
            -DGNS_SOURCE_DIR=/tmp/co-gns-src \
            -DCMAKE_BUILD_TYPE=Release
          cmake --build /tmp/co-server-gns-build -j2
          ctest --test-dir /tmp/co-server-gns-build --output-on-failure

      - name: Confirm shared bridge artifact
        run: |
          test -f /tmp/co-server-gns-build/libcommonwealth_online_gns_bridge.so
          ldd /tmp/co-server-gns-build/libcommonwealth_online_gns_bridge.so