name: Build WSA-5.10.117-Kernel
on:
  push:
    branches: ["main"]
    paths:
      - ".github/workflows/build-WSA-5.10.117-kernel.yml"
      - "kernel/**"
  pull_request:
    branches: ["main"]
    paths:
      - "kernel/**"
  workflow_call:
  workflow_dispatch:

jobs:
  build:
    strategy:
      matrix:
        arch: [x86_64, arm64]
        version: [5.10.117.2]
        include:
          - file_name: "bzImage"
            make_config: "config-wsa"
            arch: x86_64
          - file_name: "Image"
            cross_compile: "aarch64-linux-gnu"
            make_config: "config-wsa-arm64"
            arch: arm64

    name: Build WSA-Kernel-${{ matrix.version }}-${{ matrix.arch }}
    runs-on: ubuntu-20.04
    env:
      CCACHE_COMPILERCHECK: "%compiler% -dumpmachine; %compiler% -dumpversion"
      CCACHE_NOHASHDIR: "true"
      CCACHE_MAXSIZE: "2G"
      CCACHE_HARDLINK: "true"

    steps:
      - name: Install Build Tools
        run: |
          sudo apt update
          sudo apt install -y --no-install-recommends bc bison build-essential ca-certificates flex git gnupg libelf-dev libssl-dev lsb-release software-properties-common wget libncurses-dev binutils-aarch64-linux-gnu gcc-aarch64-linux-gnu nuget
          export LLVM_VERSION=12
          wget https://apt.llvm.org/llvm.sh
          chmod +x llvm.sh
          sudo ./llvm.sh $LLVM_VERSION
          rm ./llvm.sh
          sudo ln -s --force /usr/bin/clang-$LLVM_VERSION /usr/bin/clang
          sudo ln -s --force /usr/bin/ld.lld-$LLVM_VERSION /usr/bin/ld.lld
          sudo ln -s --force /usr/bin/llvm-objdump-$LLVM_VERSION /usr/bin/llvm-objdump
          sudo ln -s --force /usr/bin/llvm-ar-$LLVM_VERSION /usr/bin/llvm-ar
          sudo ln -s --force /usr/bin/llvm-nm-$LLVM_VERSION /usr/bin/llvm-nm
          sudo ln -s --force /usr/bin/llvm-strip-$LLVM_VERSION /usr/bin/llvm-strip
          sudo ln -s --force /usr/bin/llvm-objcopy-$LLVM_VERSION /usr/bin/llvm-objcopy
          sudo ln -s --force /usr/bin/llvm-readelf-$LLVM_VERSION /usr/bin/llvm-readelf
          sudo ln -s --force /usr/bin/clang++-$LLVM_VERSION /usr/bin/clang++

      - name: Checkout KernelSU
        uses: actions/checkout@v3
        with:
          path: KernelSU
          ref: main
          fetch-depth: 0

      - name: Setup kernel source
        uses: actions/checkout@v3
        with:
          repository: microsoft/WSA-Linux-Kernel
          ref: android-lts/latte/${{ matrix.version }}
          path: WSA-Linux-Kernel

      - name: Setup Ccache
        uses: hendrikmuhs/ccache-action@v1.2
        with:
          key: WSA-Kernel-${{ matrix.version }}-${{ matrix.arch }}
          save: ${{ github.event_name != 'pull_request' }}

      - name: Setup KernelSU
        working-directory: WSA-Linux-Kernel
        run: |
          echo "[+] KernelSU setup"
          KERNEL_ROOT=$GITHUB_WORKSPACE/WSA-Linux-Kernel
          echo "[+] KERNEL_ROOT: $KERNEL_ROOT"
          echo "[+] Copy KernelSU driver to $KERNEL_ROOT/drivers"
          ln -sf $GITHUB_WORKSPACE/KernelSU/kernel $KERNEL_ROOT/drivers/kernelsu
          echo "[+] Add KernelSU driver to Makefile"
          DRIVER_MAKEFILE=$KERNEL_ROOT/drivers/Makefile
          grep -q "kernelsu" $DRIVER_MAKEFILE || echo "obj-y += kernelsu/" >> $DRIVER_MAKEFILE
          echo "[+] Apply KernelSU patches"
          cd $KERNEL_ROOT && git apply $GITHUB_WORKSPACE/KernelSU/.github/patches/5.10/*.patch
          echo "[+] KernelSU setup done."

      - name: Build Kernel
        working-directory: WSA-Linux-Kernel
        run: |
          cp configs/wsa/${{ matrix.make_config }}-5.10 .config
          make -j`nproc` LLVM=1 ARCH=${{ matrix.arch }} CROSS_COMPILE=${{ matrix.cross_compile }} ${{ matrix.file_name }} CCACHE="/usr/bin/ccache"

      - name: Upload kernel-${{ matrix.arch }}-${{ matrix.version }}
        uses: actions/upload-artifact@v3
        with:
          name: kernel-WSA-${{ matrix.arch }}-${{ matrix.version }}
          path: WSA-Linux-Kernel/arch/${{ matrix.arch }}/boot/${{ matrix.file_name }}