name: tests

on:
  push:
    branches: [main]
  pull_request:

jobs:
  build-and-test:
    runs-on: ubuntu-latest
    container:
      image: ubuntu:24.04
    steps:
      # actions/checkout@v4 is a Node-based action; the bare ubuntu:24.04
      # runner image has no node, so checkout fails with
      # `exitcode '127': command not found`.  Install node + git BEFORE
      # checkout, then install the rest of the toolchain after.
      - name: Bootstrap (node + git for actions/checkout)
        run: |
          export DEBIAN_FRONTEND=noninteractive
          apt-get update
          apt-get install -y --no-install-recommends \
            git \
            ca-certificates \
            nodejs

      - uses: actions/checkout@v4

      - name: Install C++ toolchain
        run: |
          export DEBIAN_FRONTEND=noninteractive
          apt-get install -y --no-install-recommends \
            build-essential \
            cmake \
            ninja-build \
            libasio-dev \
            libyaml-cpp-dev \
            libprotobuf-dev \
            protobuf-compiler \
            protobuf-compiler-grpc \
            libgrpc++-dev \
            python3 \
            python3-yaml

      - name: Configure (Release)
        run: cmake -S . -B build -G Ninja -DCMAKE_BUILD_TYPE=Release

      - name: Build (Release)
        run: cmake --build build

      - name: Unit tests (Release)
        run: build/secsgem_tests

      # The daemon's gRPC service tests (in-process channel). The grpc deps
      # above make secs_gemd_tests build; fail loudly if it didn't, so the
      # daemon can never silently drop out of CI again.
      - name: Daemon tests (Release)
        run: |
          test -x build/secs_gemd_tests || { echo "secs_gemd_tests not built"; exit 1; }
          build/secs_gemd_tests

  thread-sanitizer:
    runs-on: ubuntu-latest
    container:
      image: ubuntu:24.04
    steps:
      - name: Bootstrap (node + git for actions/checkout)
        run: |
          export DEBIAN_FRONTEND=noninteractive
          apt-get update
          apt-get install -y --no-install-recommends \
            git ca-certificates nodejs

      - uses: actions/checkout@v4

      - name: Install C++ toolchain
        run: |
          export DEBIAN_FRONTEND=noninteractive
          apt-get install -y --no-install-recommends \
            build-essential cmake ninja-build \
            libasio-dev libyaml-cpp-dev \
            libprotobuf-dev protobuf-compiler protobuf-compiler-grpc libgrpc++-dev \
            python3 python3-yaml

      # Debug + -fsanitize=thread.  Catches data races in the
      # io_context strand contract documented in docs/INTEGRATION.md §3.
      # halt_on_error=1 makes TSan-flagged races fail the job, not
      # just print a warning.
      - name: Configure (TSan)
        run: cmake -S . -B build-tsan -G Ninja
                   -DCMAKE_BUILD_TYPE=Debug
                   -DSECSGEM_TSAN=ON

      - name: Build (TSan)
        run: cmake --build build-tsan

      - name: Unit tests (TSan)
        env:
          TSAN_OPTIONS: halt_on_error=1
        run: build-tsan/secsgem_tests

      # The daemon under TSan: run_async + concurrent gRPC handler threads is
      # the production threading shape — this is where a strand-contract
      # violation would actually surface. tools/tsan.supp silences false
      # positives inside the UNinstrumented system libgrpc only; our frames
      # stay fully checked.
      - name: Daemon tests (TSan)
        env:
          TSAN_OPTIONS: halt_on_error=1 suppressions=tools/tsan.supp
        run: |
          test -x build-tsan/secs_gemd_tests || { echo "secs_gemd_tests not built under TSan"; exit 1; }
          build-tsan/secs_gemd_tests

  tshark-dissector:
    runs-on: ubuntu-latest
    container:
      image: ubuntu:24.04
    steps:
      - name: Bootstrap (node + git for actions/checkout)
        run: |
          export DEBIAN_FRONTEND=noninteractive
          apt-get update
          apt-get install -y --no-install-recommends \
            git ca-certificates nodejs

      - uses: actions/checkout@v4

      - name: Install C++ toolchain + tshark
        run: |
          export DEBIAN_FRONTEND=noninteractive
          apt-get install -y --no-install-recommends \
            build-essential cmake ninja-build \
            libasio-dev libyaml-cpp-dev \
            python3 python3-yaml \
            tshark tcpdump

      - name: Build
        run: |
          cmake -S . -B build -G Ninja -DCMAKE_BUILD_TYPE=Release
          cmake --build build

      # Capture pcap of the demo flow, dissect with Wireshark's HSMS
      # dissector (independent third codec), assert no malformed
      # packets and that every expected control + data frame parses.
      - name: tshark HSMS dissector validation
        run: bash interop/tshark_validate.sh
        env:
          PORT: "5099"

  secs4j-interop:
    runs-on: ubuntu-latest
    # secs4j-interop builds its own docker image (with JDK) and starts
    # secs_server via docker compose; needs the docker socket, which
    # is why this job runs on the bare runner rather than inside a
    # `container:` like the other jobs.
    #
    # The bare runner image varies across deployments — catthehacker
    # provides apt-get, but some gitea-act runners use a minimal node
    # image with no package manager.  The bootstrap step detects what
    # it has (apt-get / apk / nothing) and only installs missing
    # pieces; node + git are usually already present so actions/checkout
    # can run.
    steps:
      - name: Bootstrap (node + git + docker CLI if missing)
        run: |
          set -e
          need_git=0; need_node=0; need_docker=0
          command -v git    >/dev/null || need_git=1
          command -v node   >/dev/null || need_node=1
          command -v docker >/dev/null || need_docker=1
          if [ "$need_git$need_node$need_docker" = "000" ]; then
            echo "runner image already has git/node/docker — skipping install"
            exit 0
          fi
          if command -v apt-get >/dev/null; then
            export DEBIAN_FRONTEND=noninteractive
            apt-get update
            pkgs=""
            [ "$need_git"    = "1" ] && pkgs="$pkgs git ca-certificates"
            [ "$need_node"   = "1" ] && pkgs="$pkgs nodejs"
            [ "$need_docker" = "1" ] && pkgs="$pkgs docker.io docker-compose-plugin"
            apt-get install -y --no-install-recommends $pkgs
          elif command -v apk >/dev/null; then
            pkgs=""
            [ "$need_git"    = "1" ] && pkgs="$pkgs git ca-certificates"
            [ "$need_node"   = "1" ] && pkgs="$pkgs nodejs"
            [ "$need_docker" = "1" ] && pkgs="$pkgs docker docker-cli-compose"
            apk add --no-cache $pkgs
          else
            echo "no apt-get or apk — runner image has no package manager"
            echo "need: git=$need_git node=$need_node docker=$need_docker"
            exit 1
          fi

      - uses: actions/checkout@v4

      # Cross-validate against secs4java8 (Apache 2.0, kenta-shimizu) —
      # an independent SECS implementation in Java.  55 checks
      # covering S1/S2/S3/S5/S6/S7/S10/S14/S16 with full-body GEM 300
      # shapes that secsgem-py couldn't easily drive.
      - name: secs4j cross-validation
        run: bash interop/secs4j_validate.sh

  python-interop:
    # secsgem-py (the Python reference implementation) judging our wire
    # behaviour: its GemHostHandler drives our secs_server (31 checks), the
    # C++ conformance host drives it too (47 checks), and the dual-face
    # daemon harness (gRPC tool + secsgem-py host vs secs_gemd) proves the
    # gRPC<->HSMS bridge. Localhost processes in one container — no
    # docker-in-docker.
    runs-on: ubuntu-latest
    container:
      image: ubuntu:24.04
    steps:
      - name: Bootstrap (node + git for actions/checkout)
        run: |
          export DEBIAN_FRONTEND=noninteractive
          apt-get update
          apt-get install -y --no-install-recommends \
            git ca-certificates nodejs

      - uses: actions/checkout@v4

      - name: Install toolchain + python
        run: |
          export DEBIAN_FRONTEND=noninteractive
          apt-get install -y --no-install-recommends \
            build-essential cmake ninja-build \
            libasio-dev libyaml-cpp-dev \
            libprotobuf-dev protobuf-compiler protobuf-compiler-grpc libgrpc++-dev \
            python3 python3-yaml python3-venv python3-pip

      - name: Build
        run: |
          cmake -S . -B build -G Ninja -DCMAKE_BUILD_TYPE=Release
          cmake --build build

      - name: Python deps (secsgem-py + grpcio, same pins as interop image)
        run: |
          python3 -m venv /tmp/venv
          /tmp/venv/bin/pip install --no-cache-dir \
            secsgem==0.3.0 grpcio==1.60.0 grpcio-tools==1.60.0 "setuptools<80"

      - name: secsgem-py host vs secs_server
        run: |
          build/secs_server --port 5001 &
          SERVER=$!
          sleep 1
          /tmp/venv/bin/python interop/host_vs_cpp_server.py --host 127.0.0.1 --port 5001
          rc=$?
          kill $SERVER 2>/dev/null || true
          exit $rc

      - name: secs_conformance vs secs_server
        run: |
          build/secs_server --port 5002 &
          SERVER=$!
          sleep 1
          build/secs_conformance --host 127.0.0.1 --port 5002
          rc=$?
          kill $SERVER 2>/dev/null || true
          exit $rc

      - name: daemon interop (gRPC tool + secsgem-py host vs secs_gemd)
        run: |
          build/secs_gemd --port 5003 --grpc 127.0.0.1:50051 &
          GEMD=$!
          sleep 1
          /tmp/venv/bin/python interop/daemon_interop.py \
            --grpc 127.0.0.1:50051 --hsms-host 127.0.0.1 --hsms-port 5003 \
            --proto-dir proto/secsgem/v1
          rc=$?
          kill $GEMD 2>/dev/null || true
          exit $rc

  libfuzzer:
    runs-on: ubuntu-latest
    container:
      image: ubuntu:24.04
    steps:
      - name: Bootstrap (node + git)
        run: |
          export DEBIAN_FRONTEND=noninteractive
          apt-get update
          apt-get install -y --no-install-recommends \
            git ca-certificates nodejs

      - uses: actions/checkout@v4

      - name: Install clang + libFuzzer runtime
        run: |
          export DEBIAN_FRONTEND=noninteractive
          apt-get install -y --no-install-recommends \
            cmake ninja-build \
            libasio-dev libyaml-cpp-dev \
            python3 python3-yaml \
            clang libclang-rt-18-dev

      - name: Configure (fuzz)
        env:
          CC: clang
          CXX: clang++
        run: cmake -S . -B build-fuzz -G Ninja
                   -DCMAKE_BUILD_TYPE=Debug
                   -DSECSGEM_FUZZ=ON

      - name: Build fuzz targets
        run: cmake --build build-fuzz --target fuzz_secs2_decode fuzz_sml_parse

      # 60 seconds each — long enough for libFuzzer to explore the
      # decoder/parser without ballooning CI time.  Any crash, ASan
      # report, or UBSan flag fails the job.
      - name: Fuzz secs2::decode
        run: build-fuzz/fuzz_secs2_decode -max_total_time=60 -max_len=4096

      - name: Fuzz secs2::try_parse_sml
        run: build-fuzz/fuzz_sml_parse -max_total_time=60 -max_len=4096