build.yml

name: Build & Latest Release (Linux + Windows)

on:
  pull_request:
    branches: [ master ]
  push:
    branches: [ master ]
  workflow_dispatch:

permissions:
  contents: write

jobs:
  # ───────────────────────────────────────────────────────── build ──
  build:
    env:                     # ←─ use block style, no braces
      SHORT_SHA: ${{ github.sha }}
    strategy:
      matrix:
        include:
          - os: ubuntu-22.04
            cfg:   linux-release
            build: linux-build
            isLinux: true
          - os: windows-2022
            cfg:   windows-release
            build: windows-build
            isLinux: false

    runs-on: ${{ matrix.os }}

    steps:
      # 1) checkout & deps ─────────────────────────────────────────────
      - uses: actions/checkout@v4

      - name: Install packages (apt)
        if: matrix.isLinux
        run: |
          sudo apt-get update -y
          sudo apt-get install -y --no-install-recommends \
            clang ninja-build cmake build-essential \
            libxmu-dev libxi-dev libxinerama-dev libxrandr-dev \
            libxcursor-dev libudev-dev libopenal-dev unixodbc-dev \
            libgl1-mesa-dev libxxf86vm-dev zlib1g-dev

      - name: Set up MSVC env
        if: matrix.os == 'windows-2022'
        uses: ilammy/msvc-dev-cmd@v1
        with: { arch: x64 }

      - name: Verify Ninja on PATH
        run: ninja --version

      # 2) unzip engine files ──────────────────────────────────────────
      - name: Unzip Engine files (Linux)
        if: matrix.isLinux
        run: |
          unzip -q assets/Engine.zip           -d assets
          unzip -q third_party/EE/Engine.zip   -d third_party/EE

      - name: Unzip Engine files (Windows)
        if: matrix.os == 'windows-2022'
        shell: pwsh
        run: |
          Expand-Archive assets/Engine.zip -DestinationPath assets -Force
          Get-ChildItem third_party/EE -Filter '*.zip' |
            ForEach-Object { Expand-Archive $_.FullName -DestinationPath third_party/EE -Force }

      # 3) configure → build → test ───────────────────────────────────
      - name: Configure
        run: cmake --preset ${{ matrix.cfg }}

      - name: Build
        run: cmake --build --preset ${{ matrix.build }}

      - name: Run unit tests
        run: ctest --test-dir out/build/${{ matrix.cfg }} --output-on-failure

      # 4) package + archive ──────────────────────────────────────────
      - name: Package & archive (Linux)
        if: matrix.isLinux
        run: |
          set -euo pipefail
          STAGE=out/dist
          mkdir -p "$STAGE/Bin"

          cp "out/build/${{ matrix.cfg }}/apps/client/client"  "$STAGE/client"
          cp "out/build/${{ matrix.cfg }}/apps/server/server"  "$STAGE/server"
          cp assets/Engine.pak                                 "$STAGE/Bin/Engine.pak"
          cp assets/Project.pak                                "$STAGE/Bin/Project.pak"

          ARCHIVE=linux_binaries_${SHORT_SHA:0:8}.tar.gz
          tar -czf "$ARCHIVE" -C "$STAGE" .
          echo "ARCHIVE_PATH=$ARCHIVE" >> $GITHUB_ENV

      - name: Package & archive (Windows)
        if: matrix.os == 'windows-2022'
        shell: pwsh
        run: |
          $Stage = "out/dist"
          New-Item "$Stage/Bin" -ItemType Directory -Force | Out-Null

          Copy-Item "out/build/${{ matrix.cfg }}/apps/client/client.exe"  "$Stage/client.exe"
          Copy-Item "out/build/${{ matrix.cfg }}/apps/server/server.exe"  "$Stage/server.exe"
          Copy-Item "assets/Engine.pak"                                   "$Stage/Bin/Engine.pak"
          Copy-Item "assets/Project.pak"                                  "$Stage/Bin/Project.pak"

          $sha     = $env:SHORT_SHA.Substring(0,8)
          $archive = "windows_binaries_${sha}.zip"
          Compress-Archive -Path "$Stage/*" -DestinationPath $archive
          echo "ARCHIVE_PATH=$archive" >> $env:GITHUB_ENV

      # 5) upload exactly that one file ────────────────────────────────
      - name: Upload platform archive
        uses: actions/upload-artifact@v4
        with:
          name: binaries-${{ matrix.os }}
          path: ${{ env.ARCHIVE_PATH }}
          retention-days: 2

  # ───────────────────────────────────────────────────── release ──
  release:
    needs: build
    if: github.event_name == 'push' && github.ref == 'refs/heads/master'
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v4

      # 1) Clean slate: delete old “latest” release + tag (if present)
      - name: Delete previous Latest release
        env:
          GITHUB_TOKEN: ${{ github.token }}   # <- use the name gh expects
        run: |
          # The CLI exits 1 if the release/tag doesn't exist; ignore that.
          gh release delete latest --cleanup-tag --yes --repo "$GITHUB_REPOSITORY" 2>&1 | \
            grep -v "release.*not found" || true

      # 2) Download fresh archives built by the matrix
      - name: Download platform archives
        uses: actions/download-artifact@v4
        with:
          pattern: binaries-*
          merge-multiple: true
          path: release      # → release/*.zip / *.tar.gz

      # 3) Metadata for title & body
      - name: Build release metadata
        id: vars
        run: |
          echo "timestamp=$(date -u +'%Y-%m-%d %H:%M UTC')" >> $GITHUB_OUTPUT
          echo "short_sha=${GITHUB_SHA::8}"                 >> $GITHUB_OUTPUT

      # 4) Publish brand-new Latest release with ONLY the two archives
      - name: Publish Latest release
        uses: softprops/action-gh-release@v2
        with:
          tag_name: latest
          make_latest: true
          name: Latest build – ${{ steps.vars.outputs.timestamp }}
          body: |
            Automatic build from commit \
            [`${{ steps.vars.outputs.short_sha }}`]\
            (${{ github.server_url }}/${{ github.repository }}/commit/${{ github.sha }}).
          files: |
            release/*.zip
            release/*.tar.gz