name: Build Linux Release

on:
  push: {}
  pull_request: {}

jobs:
  build-linux:
    runs-on: ubuntu-latest
    concurrency:
      group: build-linux-${{ github.ref }}
      cancel-in-progress: true
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Install system dependencies
        run: |
          sudo apt-get update
          sudo apt-get install -y build-essential python3 python3-pip python3-setuptools libgl1-mesa-dev libglu1-mesa-dev libglfw3-dev libpng-dev pkg-config clang lld ccache libssl-dev
          # Set a reasonable ccache size
          ccache -M 5G || true

      - name: Setup Python
        uses: actions/setup-python@v4
        with:
          python-version: '3.x'

      - name: Cache pip packages
        uses: actions/cache@v4
        with:
          path: ~/.cache/pip
          key: ${{ runner.os }}-pip-${{ hashFiles('.github/workflows/build-linux.yml') }}

      - name: Install Meson and Ninja (pip)
        run: |
          python -m pip install --upgrade pip
          pip install meson ninja

      - name: Restore ccache
        uses: actions/cache@v4
        with:
          path: ~/.ccache
          key: ${{ runner.os }}-ccache-${{ hashFiles('**/meson.build') }}

      - name: Restore meson cache
        uses: actions/cache@v4
        with:
          path: ~/.cache/meson
          key: ${{ runner.os }}-meson-${{ hashFiles('**/meson.build') }}

      - name: Configure Meson
        env:
          CC: "ccache clang"
          CXX: "ccache clang++"
          CCACHE_DIR: ${{ runner.temp }}/ccache
        run: |
          mkdir -p "$CCACHE_DIR"
          export CCACHE_DIR="$CCACHE_DIR"
          meson setup build_meson --wipe --buildtype=release

      - name: Build with Ninja
        env:
          CC: "ccache clang"
          CXX: "ccache clang++"
          CCACHE_DIR: ${{ runner.temp }}/ccache
        run: |
          export CCACHE_DIR="${{ runner.temp }}/ccache"
          # Use all available cores for faster parallel builds
          ninja -C build_meson -j$(nproc) -v

      - name: Package Linux executable as gzip
        env:
          GITHUB_SHA: ${{ github.sha }}
        run: |
          mkdir -p out
          SHORT_SHA=$(echo $GITHUB_SHA | cut -c1-8)
          EXE_PATH=build_meson/Minecraft.Client/Minecraft.Client
          if [ -f "$EXE_PATH" ]; then
            tar -czf out/minecraft-client-linux-${SHORT_SHA}.tar.gz -C build_meson Minecraft.Client/Minecraft.Client
            echo "packaged: out/minecraft-client-linux-${SHORT_SHA}.tar.gz"
          else
            echo "ERROR: expected executable at $EXE_PATH" >&2
            ls -la build_meson || true
            exit 1
          fi

      - name: Upload artifact (.tar.gz)
        uses: actions/upload-artifact@v4
        with:
          name: minecraft-client-linux-${{ github.sha }}
          path: out/*.tar.gz