name: Native backend regression

on:
  push:
    paths:
      - "app/**"
      - "native/**"
      - "schemas/**"
      - "tests/**"
      - "requirements*.txt"
      - "constraints/**"
      - ".python-version"
      - ".gitattributes"
      - ".github/workflows/solver-regression.yml"
  pull_request:
    paths:
      - "app/**"
      - "native/**"
      - "schemas/**"
      - "tests/**"
      - "requirements*.txt"
      - "constraints/**"
      - ".python-version"
      - ".gitattributes"
      - ".github/workflows/solver-regression.yml"
  schedule:
    - cron: "17 3 * * *"
  workflow_dispatch:

concurrency:
  group: solver-regression-${{ github.ref }}-${{ github.event_name }}
  cancel-in-progress: false

permissions:
  contents: read

jobs:
  contracts:
    runs-on: ubuntu-24.04
    timeout-minutes: 10
    steps:
      - uses: actions/checkout@v4
      - uses: actions/setup-python@v5
        with:
          python-version-file: .python-version
          cache: pip
          cache-dependency-path: constraints/python312-linux-x86_64.lock
      - name: Install backend runtime without numerical Python packages
        run: |
          python -m pip install -r constraints/python312-linux-x86_64.lock
          python -m pip check
      - name: Validate portable metadata and XML contracts
        env:
          SYSTEM_SIMULATION_VERIFY_LOCKED_ENV: "1"
        run: |
          python -W error::ResourceWarning -m unittest \
            tests.test_dependency_constraints \
            tests.test_regression_fixture_line_endings \
            tests.test_component_catalog \
            tests.test_component_metadata \
            tests.test_component_registry \
            tests.test_port_computation \
            tests.test_native_schedule.DependencyGraphTests \
            tests.test_medium_reference_contract \
            tests.test_system_xml_v3 \
            tests.test_native_only_backend

  native-linux:
    runs-on: ubuntu-24.04
    timeout-minutes: 15
    steps:
      - uses: actions/checkout@v4
      - uses: actions/setup-python@v5
        with:
          python-version-file: .python-version
      - name: Install native dependencies with the existing Linux setup
        run: |
          python -m venv .venv
          .venv/bin/python -m pip install -r requirements-test.txt
          bash bat/setup-native-linux.sh
      - name: Check startup diagnostics, native cache and solver control on Linux
        env:
          SIMULATION_NATIVE_REQUIRE_TOOLCHAIN: "1"
        run: |
          .venv/bin/python -W error::ResourceWarning -m unittest \
            tests.test_simulation_warmup tests.test_native_cache_platform \
            tests.test_native_solver_control tests.test_native_worker_control \
            tests.test_result_storage tests.test_native_sample_storage tests.test_native_result_transport -v

  native-windows:
    runs-on: windows-2022
    timeout-minutes: 30
    defaults:
      run:
        shell: pwsh
    steps:
      - uses: actions/checkout@v4
      - uses: conda-incubator/setup-miniconda@v3
        with:
          python-version: "3.12"
          activate-environment: simulation-native
          auto-activate-base: false
      - name: Install native compiler and SUNDIALS
        run: |
          conda install --yes -c conda-forge sundials=7.4.0 m2w64-gcc
          if ($LASTEXITCODE -ne 0) { exit $LASTEXITCODE }
          "SUNDIALS_ROOT=$env:CONDA_PREFIX\Library" >> $env:GITHUB_ENV
          "SIMULATION_NATIVE_CC=$env:CONDA_PREFIX\Library\mingw-w64\bin\gcc.exe" >> $env:GITHUB_ENV
          python -m pip install -r requirements-test.txt
          python -m pip check
      - name: Verify native cache on the Windows runtime
        env:
          SIMULATION_NATIVE_REQUIRE_TOOLCHAIN: "1"
        run: |
          New-Item -ItemType Directory -Force test/ci-native-cache | Out-Null
          python -W error::ResourceWarning -m unittest tests.test_native_cache_storage tests.test_native_cache_platform -v > test/ci-native-cache/regression.log 2>&1
          $cacheRegressionExit = $LASTEXITCODE
          Get-Content test/ci-native-cache/regression.log
          if ($cacheRegressionExit -ne 0) { exit $cacheRegressionExit }
      - name: Run catalog, numerical, API and schema regression
        run: |
          python -c "from app.simulation.native_codegen.build import toolchain; print(toolchain())"
          if ($LASTEXITCODE -ne 0) { exit $LASTEXITCODE }
          python -W error::ResourceWarning -m unittest discover -s tests
      - name: Complete the 10 second skill fixture in native RK45
        run: |
          python -m app.simulation.native_codegen tests/fixtures/native-skill-test.xml --output-dir test/ci-skill --method RK45 --max-step 0.001 --rtol 1e-7 --runs 1 --solve-only
      - if: always()
        uses: actions/upload-artifact@v4
        with:
          name: native-skill-regression
          path: test/ci-skill/summary.json
          if-no-files-found: warn
      - if: always()
        uses: actions/upload-artifact@v4
        with:
          name: native-windows-cache-regression
          path: test/ci-native-cache/regression.log
          if-no-files-found: warn