release.yml

name: Release (CD)

on:
  workflow_call:
    inputs:
      build-run-id:
        description: 'CI workflow run ID to download artifact from'
        required: true
        type: string
  workflow_dispatch:
    inputs:
      build-run-id:
        description: 'CI workflow run ID to download artifact from'
        required: true
        type: string

permissions:
  contents: write

jobs:
  release:
    name: Create GitHub Release
    runs-on: windows-2025-vs2026

    steps:
      - name: Checkout Repository
        uses: actions/checkout@v4
        with:
          fetch-depth: 0
          fetch-tags: true

      # ── Download build artifact from the triggering CI run ──
      - name: Download Build Artifact
        uses: dawidd6/action-download-artifact@v3
        with:
          workflow: build.yml
          name: RayTracing-Release
          run_id: ${{ inputs.build-run-id }}
          path: ./package

      # ── Generate version tag: vYY.MM.DD.N ──
      - name: Generate Version
        id: version
        shell: pwsh
        run: |
          $date = Get-Date -Format "yy.MM.dd"

          # Find highest existing sequence number for today
          $existingTags = git tag -l "v$date.*"
          $maxSeq = 0
          foreach ($tag in $existingTags) {
            if ($tag -match "^v\d{2}\.\d{2}\.\d{2}\.(\d+)$") {
              $seq = [int]$Matches[1]
              if ($seq -gt $maxSeq) { $maxSeq = $seq }
            }
          }

          $version = "v$date.$($maxSeq + 1)"
          echo "version=$version" >> $env:GITHUB_OUTPUT
          Write-Host "Generated version: $version"

      # ── Verify artifact + read build metadata from CI ──
      - name: Verify & Read Build Metadata
        id: metadata
        shell: pwsh
        run: |
          Write-Host "=== Package contents ==="
          Get-ChildItem ./package -Recurse | ForEach-Object {
            $size = "{0:N0} KB" -f ($_.Length / 1KB)
            Write-Host "  $($_.FullName.Replace((Resolve-Path ./package).Path + '\', '')) ($size)"
          }

          if (-not (Test-Path "./package/RayTracing.exe")) {
            Write-Error "RayTracing.exe not found in package!"
            exit 1
          }

          # Read build metadata (written by CI during DLL collection)
          if (Test-Path "./package/build-info.txt") {
            $info = Get-Content "./package/build-info.txt" -Raw
            Write-Host "`n=== Build Metadata ==="
            Write-Host $info.Trim()

            # Parse key=value lines
            $meta = @{}
            $info -split "`n" | ForEach-Object {
              if ($_ -match '^(\w+)=(.+)$') {
                $meta[$Matches[1]] = $Matches[2].Trim()
              }
            }

            $wlCuda  = $meta['wl_cuda']  -eq 'True'
            $wlOptix = $meta['wl_optix'] -eq 'True'
            $wlIspc  = $meta['wl_ispc'] -eq 'True'
            $commit  = $meta['commit_sha']
            $buildDate = $meta['build_date']

            echo "wl_cuda=$wlCuda"      >> $env:GITHUB_OUTPUT
            echo "wl_optix=$wlOptix"    >> $env:GITHUB_OUTPUT
            echo "wl_ispc=$wlIspc"      >> $env:GITHUB_OUTPUT
            echo "commit_sha=$commit"   >> $env:GITHUB_OUTPUT
            echo "build_date=$buildDate" >> $env:GITHUB_OUTPUT

            Write-Host "`nParsed: CUDA=$wlCuda | OptiX=$wlOptix | ISPC=$wlIspc | commit=$commit"
          } else {
            Write-Warning "build-info.txt not found — release will lack build metadata"
            echo "wl_cuda=true"    >> $env:GITHUB_OUTPUT
            echo "wl_optix=false"  >> $env:GITHUB_OUTPUT
            echo "wl_ispc=false"   >> $env:GITHUB_OUTPUT
            echo "commit_sha=unknown" >> $env:GITHUB_OUTPUT
            echo "build_date=unknown" >> $env:GITHUB_OUTPUT
          }

      # ── Package as ZIP ──
      - name: Package Release ZIP
        shell: pwsh
        run: |
          $version = "${{ steps.version.outputs.version }}"
          $zipName = "RayTracing-$version-win64.zip"
          Compress-Archive -Path ./package/* -DestinationPath $zipName
          echo "zip_name=$zipName" >> $env:GITHUB_ENV
          Write-Host "Created: $zipName"

      # ── Create GitHub Release with feature-aware body ──
      - name: Create GitHub Release
        uses: softprops/action-gh-release@v2
        with:
          name: ${{ steps.version.outputs.version }}
          tag_name: ${{ steps.version.outputs.version }}
          files: ${{ env.zip_name }}
          draft: false
          prerelease: false
          generate_release_notes: true
          body: |
            ## 🔧 Build Features

            | Feature | Status |
            |---------|--------|
            | CUDA GPU Acceleration | ${{ steps.metadata.outputs.wl_cuda == 'True' && '✅ Enabled' || '❌ Disabled' }} |
            | OptiX AI Denoiser | ${{ steps.metadata.outputs.wl_optix == 'True' && '✅ Enabled' || '❌ Disabled' }} |
            | ISPC SIMD (CPU) | ${{ steps.metadata.outputs.wl_ispc == 'True' && '✅ Enabled' || '❌ Disabled' }} |

            **Commit:** `${{ steps.metadata.outputs.commit_sha }}`
            **Built:** ${{ steps.metadata.outputs.build_date }}

            ### 📦 Included in ZIP
            - `RayTracing.exe`
            - Runtime DLLs: `vulkan-1.dll`, `vcruntime140.dll`, `msvcp140.dll`
            - CUDA runtime DLLs (if CUDA enabled at build time)

            ### ▶️ How to Run
            1. Download `RayTracing-${{ steps.version.outputs.version }}-win64.zip`
            2. Extract to any folder
            3. Run `RayTracing.exe`

            ### ⚠️ Prerequisites
            - **Vulkan runtime** (bundled)
            - **CUDA acceleration** requires NVIDIA GPU driver with CUDA 12.0+
            - **Denoiser** requires NVIDIA driver 545+ (includes `nvoptix.dll`)