name: Build (Linux, x86-64)

on:
  push:
    paths: &workflow_paths
      - '**.cpp'
      - '**.h'
      - '**.c'
      - '**.cc'
      - '**.cxx'
      - '**.hh'
      - '**.hpp'
      - '**.hxx'
      - '**.inl'
      - "**meson.build"
      - "flake.nix"
      - '.github/workflows/build-linux.yml'

  pull_request:
    paths: *workflow_paths

  workflow_dispatch:

jobs:
  build-linux:
    runs-on: ubuntu-latest

    steps:
      - name: Restore .git folder
        uses: actions/cache@v5
        with:
          path: .git
          key: ${{ runner.os }}-git-${{ github.sha }}
          restore-keys: ${{ runner.os }}-git-

      - name: Checkout repository
        uses: actions/checkout@v6

      - name: Install system dependencies
        uses: awalsh128/cache-apt-pkgs-action@latest
        with:
          packages: build-essential ccache meson ninja-build libsdl2-dev libgl-dev libglu1-mesa-dev libpthread-stubs0-dev libglm-dev
          version: 1.0
        
      - name: Install LLVM + libc++
        run: |
          wget -qO- https://apt.llvm.org/llvm.sh | sudo bash -s -- 20
          sudo apt-get install -y libc++-20-dev libc++abi-20-dev

      - name: Restore ccache
        uses: actions/cache@v5
        with:
          path: ${{ runner.temp }}/ccache
          key: ${{ runner.os }}-ccache-${{ hashFiles('**/meson.build') }}
          restore-keys: ${{ runner.os }}-ccache-

      - name: Configure Meson
        env:
          CC: "ccache clang"
          CXX: "ccache clang++"
          CC_LD: lld
          CXX_LD: lld
        run: |
          meson setup build --native-file=scripts/llvm_native.txt -Dunity=off --wipe
          meson setup build_unity --native-file=scripts/llvm_native.txt -Dunity=on -Dunity_size=99999 --wipe

      - name: Compile (-Dunity=on)
        env:
          CCACHE_DIR: ${{ runner.temp }}/ccache
        run: |
          meson compile -C build_unity -j $(nproc) -v Minecraft.Client

      - name: Compile (-Dunity=off)
        env:
          CCACHE_DIR: ${{ runner.temp }}/ccache
        run: |
          meson compile -C build -j $(nproc) -v Minecraft.Client

      - name: Upload artifact
        uses: actions/upload-artifact@v4
        with:
          name: minecraft-client-linux-${{ github.sha }}
          path: build/targets/app/Minecraft.Client
          retention-days: 7