name: GKI Kernel Build

on:
  workflow_call:
    inputs:
      version:
        required: true
        type: string
        description: >
          Output directory of gki,
          for example: android12-5.10
      version_name:
        required: true
        type: string
        description: >
          With SUBLEVEL of kernel,
          for example: android12-5.10.66
      tag:
        required: true
        type: string
        description: >
          Part of branch name of common kernel manifest,
          for example: android12-5.10-2021-11
      patch_path:
        required: true
        type: string
        description: >
          Directory name of .github/patches/<patch_path>
          for example: 5.10
      use_cache:
        required: false
        type: boolean
        default: true
      embed_ksud:
        required: false
        type: string
        default: ksud-aarch64-linux-android
        description: >
          Artifact name of prebuilt ksud to be embedded
          for example: ksud-aarch64-linux-android
    secrets:
      BOOT_SIGN_KEY:
        required: false
      CHAT_ID:
        required: false
      CACHE_CHAT_ID:
        required: false
      BOT_TOKEN:
        required: false
      MESSAGE_THREAD_ID:
        required: false

jobs:
  build:
    name: Build ${{ inputs.version_name }}
    runs-on: ubuntu-latest
    env:
      CCACHE_COMPILERCHECK: "%compiler% -dumpmachine; %compiler% -dumpversion"
      CCACHE_NOHASHDIR: "true"
      CCACHE_MAXSIZE: "2G"
      CCACHE_HARDLINK: "true"
    steps:
      - uses: actions/checkout@v3
        with:
          path: KernelSU
          fetch-depth: 0

      - uses: hendrikmuhs/ccache-action@v1.2
        if: inputs.use_cache == true
        with:
          key: ccache-aarch64-${{ inputs.version_name }}
          append-timestamp: false
          save: ${{ github.event_name != 'pull_request' }}

      - name: Setup need_upload
        id: need_upload
        run: |
          if [ ! -z "${{ secrets.BOT_TOKEN }}" ]; then
            echo "UPLOAD=true" >> $GITHUB_OUTPUT
          else
            echo "UPLOAD=false" >> $GITHUB_OUTPUT
          fi

      - name: Setup kernel source
        run: |
          cd $GITHUB_WORKSPACE
          git clone https://gerrit.googlesource.com/git-repo
          mkdir android-kernel && cd android-kernel
          ../git-repo/repo init --depth=1 --u https://android.googlesource.com/kernel/manifest -b common-${{ inputs.tag }}
          ../git-repo/repo sync -j$(nproc --all)

      - name: Download prebuilt ksud from artifacts
        uses: actions/download-artifact@v3
        with:
          name: ${{ inputs.embed_ksud }}
          path: .

      - name: Setup KernelSU
        env:
          PATCH_PATH: ${{ inputs.patch_path }}
        run: |
          cd $GITHUB_WORKSPACE/android-kernel
          echo "[+] KernelSU setup"
          GKI_ROOT=$(pwd)
          echo "[+] GKI_ROOT: $GKI_ROOT"
          echo "[+] Copy KernelSU driver to $GKI_ROOT/common/drivers"
          ln -sf $GITHUB_WORKSPACE/KernelSU/kernel $GKI_ROOT/common/drivers/kernelsu
          echo "[+] Add KernelSU driver to Makefile"
          DRIVER_MAKEFILE=$GKI_ROOT/common/drivers/Makefile
          grep -q "kernelsu" $DRIVER_MAKEFILE || echo "obj-y += kernelsu/" >> $DRIVER_MAKEFILE
          echo "[+] Apply KernelSU patches"
          cd $GKI_ROOT/common/ && git apply $GITHUB_WORKSPACE/KernelSU/.github/patches/$PATCH_PATH/*.patch
          cd $GITHUB_WORKSPACE
          echo "[+] Build embed_ksud.c"
          python3 ./KernelSU/scripts/bin2c.py ./aarch64-linux-android/release/ksud ksud > ./KernelSU/kernel/embed_ksud.c
          echo "[+] KernelSU setup done."

      - name: Symbol magic
        run: |
          echo "[+] Export all symbol from abi_gki_aarch64.xml"
          COMMON_ROOT=$GITHUB_WORKSPACE/android-kernel/common
          KSU_ROOT=$GITHUB_WORKSPACE/KernelSU
          ABI_XML=$COMMON_ROOT/android/abi_gki_aarch64.xml
          SYMBOL_LIST=$COMMON_ROOT/android/abi_gki_aarch64
          # python3 $KSU_ROOT/scripts/abi_gki_all.py $ABI_XML > $SYMBOL_LIST
          echo "[+] Add KernelSU symbols"
          cat $KSU_ROOT/kernel/export_symbol.txt | awk '{sub("[ \t]+","");print "  "$0}' >> $SYMBOL_LIST

      - name: Build boot.img
        working-directory: android-kernel
        run: CCACHE="/usr/bin/ccache" LTO=thin BUILD_CONFIG=common/build.config.gki.aarch64 build/build.sh

      - name: Prepare artifacts
        id: prepareArtifacts
        run: |
          OUTDIR=android-kernel/out/${{ inputs.version }}/dist
          mkdir output
          cp $OUTDIR/Image ./output/
          cp $OUTDIR/Image.lz4 ./output/

      - name: Upload Image and Image.gz
        uses: actions/upload-artifact@v3
        with:
          name: Image-${{ inputs.version_name }}_${{ inputs.os_patch_level }}
          path: ./output/*