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: ["5.15.94.2", "5.15.104.1", "5.15.104.2", "5.15.104.3", "5.15.104.4"]

    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
        uses: awalsh128/cache-apt-pkgs-action@v1
        with:
          packages: bc bison build-essential flex libelf-dev binutils-aarch64-linux-gnu gcc-aarch64-linux-gnu gzip ccache
          version: 1.0

      - name: Cache LLVM
        id: cache-llvm
        uses: actions/cache@v3
        with:
          path: ./llvm
          key: llvm-12.0.1

      - name: Setup LLVM
        uses: KyleMayes/install-llvm-action@v1
        with:
          version: "12.0.1"
          force-version: true
          ubuntu-version: "16.04"
          cached: ${{ steps.cache-llvm.outputs.cache-hit }}

      - name: Checkout KernelSU
        uses: actions/checkout@v4
        with:
          path: KernelSU
          fetch-depth: 0

      - name: Setup kernel source
        uses: actions/checkout@v4
        with:
          repository: microsoft/WSA-Linux-Kernel
          ref: android-lts/latte-2/${{ 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/5.15/*.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: |
          if [ ! -z ${{ vars.EXPECTED_SIZE }} ] && [ ! -z ${{ vars.EXPECTED_HASH }} ]; then
            export KSU_EXPECTED_SIZE=${{ vars.EXPECTED_SIZE }}
            export KSU_EXPECTED_HASH=${{ vars.EXPECTED_HASH }}
          fi
          declare -A ARCH_MAP=(["x86_64"]="x64" ["arm64"]="arm64")
          cp configs/wsa/config-wsa-${ARCH_MAP[${{ matrix.arch }}]} .config
          make olddefconfig
          declare -A FILE_NAME=(["x86_64"]="bzImage" ["arm64"]="Image")
          make -j`nproc` LLVM=1 ARCH=${{ matrix.arch }} $(if [ "${{ matrix.arch }}" == "arm64" ]; then echo CROSS_COMPILE=aarch64-linux-gnu; fi) ${FILE_NAME[${{ matrix.arch }}]} CCACHE="/usr/bin/ccache"
          declare -A ARCH_MAP_FILE=(["x86_64"]="x86" ["arm64"]="arm64")
          echo "file_path=WSA-Linux-Kernel/arch/${ARCH_MAP_FILE[${{ matrix.arch }}]}/boot/${FILE_NAME[${{ matrix.arch }}]}" >> $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: Bot session cache
        if: github.event_name == 'push' && github.ref == 'refs/heads/main' || github.ref_type == 'tag'
        id: bot_session_cache
        uses: actions/cache@v3
        with:
          path: scripts/ksubot.session
          key: ${{ runner.os }}-bot-session

      - name: Post to Telegram
        if: github.event_name == 'push' && github.ref == 'refs/heads/main' || github.ref_type == 'tag'
        env:
          CHAT_ID: ${{ secrets.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 "${{ secrets.BOT_TOKEN }}" ]; then
            pip3 install telethon==1.31.1
            python3 "$GITHUB_WORKSPACE/KernelSU/scripts/ksubot.py" "${{ env.file_path }}.gz"
          fi