name: Synthetic recompilation

on:
  workflow_call:
  workflow_dispatch:

permissions:
  contents: read

jobs:
  windows:
    name: Windows runtime (synthetic DOL)
    runs-on: windows-latest
    timeout-minutes: 60
    steps:
      - uses: actions/checkout@v7
        with:
          persist-credentials: false
          submodules: recursive

      - uses: actions/setup-dotnet@v6
        with:
          dotnet-version: '8.0.x'

      # Cache downloads only. Preparation still validates pins, and every run
      # compiles current Aurora, runtime, and generated sources from scratch.
      - uses: actions/cache@v5
        with:
          path: Launcher/artifacts/downloads
          key: windows-recomp-downloads-${{ hashFiles('Launcher/Prepare-PortableTools.ps1', 'Launcher/Prepare-Dependencies.ps1') }}

      # Install sccache.
      - name: Run sccache-action
        uses: mozilla/sccache-action@v0.0.11

      # Tell CMake to use sccache and use GitHub's API.
      - name: Configure sccache environment
        shell: pwsh
        run: |
          "SCCACHE_GHA_ENABLED=true" | Add-Content -Path $env:GITHUB_ENV
          "ACTIONS_CACHE_SERVICE_V2=on" | Add-Content -Path $env:GITHUB_ENV
          "CMAKE_C_COMPILER_LAUNCHER=$env:SCCACHE_PATH" | Add-Content -Path $env:GITHUB_ENV
          "CMAKE_CXX_COMPILER_LAUNCHER=$env:SCCACHE_PATH" | Add-Content -Path $env:GITHUB_ENV

      - name: Prepare the shipped Windows toolchain
        shell: pwsh
        run: ./Launcher/Prepare-PortableTools.ps1

      - name: Build and run Windows host-platform tests
        shell: pwsh
        run: |
          $tools = Join-Path $PWD 'Launcher/artifacts/portable-tools'
          $env:PATH = "$tools/llvm-mingw/bin;$tools/CMake/bin;$tools/Ninja;$env:PATH"
          cmake -S runtime -B build-platform -G Ninja `
            -DCMAKE_BUILD_TYPE=Release -DCMAKE_C_COMPILER=clang -DCMAKE_CXX_COMPILER=clang++ `
            -DMKW_BUILD_PRODUCTS=OFF -DMKW_PLATFORM_TESTS_ONLY=ON
          if ($LASTEXITCODE -ne 0) { exit $LASTEXITCODE }
          cmake --build build-platform --parallel 3
          if ($LASTEXITCODE -ne 0) { exit $LASTEXITCODE }
          ctest --test-dir build-platform --output-on-failure
          if ($LASTEXITCODE -ne 0) { exit $LASTEXITCODE }

      - name: Prepare pinned native dependencies
        shell: pwsh
        run: ./Launcher/Prepare-Dependencies.ps1

      # Expose cache token context to the build script.
      - name: Translate, compile the full runtime, and link
        shell: pwsh
        run: ./Launcher/Test-Recompilation.ps1 -Parallel 4

      # Print cache results (even if the build fails)
      - name: Show sccache stats
        if: always()
        shell: pwsh
        run: sccache --show-stats