name: Build Kernel
on:
  push:
    branches: [ "main" ]
  pull_request:
    branches: [ "main" ]
jobs:
  build:
    strategy:
      matrix:
        include:
          - version: android12-5.10-81
            tag: android12-5.10-2022-03
          - version: android12-5.10-101
            tag: android12-5.10-2022-05
          - version: android12-5.10-110
            tag: android12-5.10-2022-07
          - version: android12-5.10-136
            tag: android12-5.10-2022-11

    name: Build aarch64-${{ matrix.version }}
    runs-on: ubuntu-latest
    steps:
    - name: Download kernel source
      run: |
        git clone https://gerrit.googlesource.com/git-repo
        mkdir android-kernel && cd android-kernel
        ../git-repo/repo init -u https://android.googlesource.com/kernel/manifest -b common-${{ matrix.tag }}
        ../git-repo/repo sync
        curl -LSs "https://raw.githubusercontent.com/tiann/KernelSU/main/kernel/setup.sh" | bash -
        curl -Lo gki-kernel.zip https://dl.google.com/android/gki/gki-certified-boot-${{ matrix.tag }}_r1.zip
        unzip gki-kernel.zip
        tools/mkbootimg/unpack_bootimg.py --boot_img=$(find . -maxdepth 1 -name "*.img")
    
    - name: Build kernel
      working-directory: android-kernel
      run: BUILD_BOOT_IMG=1 SKIP_VENDOR_BOOT=1 KERNEL_BINARY=Image GKI_RAMDISK_PREBUILT_BINARY=out/ramdisk AVB_SIGN_BOOT_IMG=1 AVB_BOOT_PARTITION_SIZE=$((64*1024*1024)) AVB_BOOT_ALGORITHM=SHA256_RSA2048 AVB_BOOT_KEY=prebuilts/kernel-build-tools/linux-x86/share/avb/testkey_rsa2048.pem BOOT_IMAGE_HEADER_VERSION=4 LTO=thin BUILD_CONFIG=common/build.config.gki.aarch64 build/build.sh
      
    - name: Upload build artifact
      uses: actions/upload-artifact@v3
      with:
        name: kernel-aarch64-${{ matrix.version }}
        path: android-kernel/out/*/dist/boot.img