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

jobs:
  build:
    strategy:
      matrix:
        arch: [x86_64, arm64]
        version: ["5.15.78.1", "5.15.94.4"]
        include:
          - arch: x86_64
            file_name: "bzImage"
          - arch: arm64
            file_name: "Image"
            cross_compile: "aarch64-linux-gnu"
          - version: "5.15.78.1"
            arch: x86_64
            make_config: config-wsa-x64
          - version: "5.15.78.1"
            arch: arm64
            make_config: config-wsa-arm64
          - version: "5.15.94.4"
            arch: x86_64
            make_config: config-wsa-x64
          - version: "5.15.94.4"
            arch: arm64
            make_config: config-wsa-arm64
          - version: "5.15.78.1"
            device_code: latte-2
            kernel_version: "5.15"
          - version: "5.15.94.4"
            device_code: latte-2
            kernel_version: "5.15"


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

    steps:
      - name: Install Build Tools
        run: |
          sudo apt-get update
          sudo apt-get 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 gzip
          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/${{ matrix.device_code }}/${{ 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 == 'push' && github.ref == 'refs/heads/main' }}
          max-size: 2G

      - 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 $GITHUB_WORKSPACE/KernelSU/.github/patches/${{ matrix.kernel_version }}/*.patch
          echo "[+] KernelSU setup done."
          cd $GITHUB_WORKSPACE/KernelSU
          VERSION=$(($(git rev-list --count HEAD) + 10200))
          echo "VERSION: $VERSION"
          echo "kernelsu_version=$VERSION" >> $GITHUB_ENV

      - name: Build Kernel
        working-directory: WSA-Linux-Kernel
        run: |
          cp configs/wsa/${{ matrix.make_config }} .config
          make olddefconfig
          make -j`nproc` LLVM=1 ARCH=${{ matrix.arch }} CROSS_COMPILE=${{ matrix.cross_compile }} ${{ matrix.file_name }} CCACHE="/usr/bin/ccache"
          declare -A ARCH_MAP=(["x86_64"]="x86" ["arm64"]="arm64")
          echo "file_path=WSA-Linux-Kernel/arch/${ARCH_MAP[${{ matrix.arch }}]}/boot/${{ matrix.file_name }}" >> $GITHUB_ENV

      - name: Upload kernel-${{ matrix.arch }}-${{ matrix.version }}
        uses: actions/upload-artifact@v3
        with:
          name: kernel-WSA-${{ matrix.arch }}-${{ matrix.version }}
          path: "${{ env.file_path }}"

      - name: Post to Telegram
        if: ${{ ( github.event_name == 'push' && github.ref == 'refs/heads/main' ) || github.ref_type == 'tag' }}
        env:
          CHAT_ID: ${{ secrets.CHAT_ID }}
          CACHE_CHAT_ID: ${{ secrets.CACHE_CHAT_ID }}
          BOT_TOKEN: ${{ secrets.BOT_TOKEN }}
          MESSAGE_THREAD_ID: ${{ secrets.MESSAGE_THREAD_ID }}
          COMMIT_MESSAGE: ${{ github.event.head_commit.message }}
          COMMIT_URL: ${{ github.event.head_commit.url }}
          RUN_URL: ${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}    
        run: |
          TITLE=kernel-${{ matrix.arch }}-WSA-${{ matrix.version }}
          echo "[+] title: $TITLE"
          export TITLE
          export VERSION="${{ env.kernelsu_version }}"
          echo "[+] Compress images"
          gzip -n -f -9 "${{ env.file_path }}"
          echo "[+] Image to upload"
          ls -l "${{ env.file_path }}.gz"
          if [ -n "${{ secrets.BOT_TOKEN }}" ]; then
            pip3 install python-telegram-bot
            python3 "$GITHUB_WORKSPACE/KernelSU/scripts/ksubot.py" "${{ env.file_path }}.gz"
          fi