name: 'Build Kernel'
description: 'Builds kernel using legacy build.sh or Bazel (kleaf)'
inputs:
  bypass:
    description: 'Whether to add the bypass hack or not'
    required: true
  version:
    description: 'Kernel config version (e.g., android14-6.1)'
    required: true

runs:
  using: composite
  steps:
  - name: 'Build Kernel'
    shell: bash
    working-directory: ${{ github.workspace }}/kernel
    run: |
      set -euo pipefail
      if [ "${{ inputs.bypass }}" = "true" ]; then
        if [[ ${{ inputs.version }} == "android14-6.1" || ${{ inputs.version }} == "android15-6.6" || ${{ inputs.version }} == "android16-6.12" ]]; then
          TARGET_FILE="${{ github.workspace }}/kernel/common/kernel/module/version.c"
        else
          TARGET_FILE="${{ github.workspace }}/kernel/common/kernel/module.c"
        fi

        sed -i '/bad_version:/{:a;n;/return 0;/{s/return 0;/return 1;/;b};ba}' "$TARGET_FILE"

        if ! grep -A 5 "bad_version:" "$TARGET_FILE" | grep -q "return 1;"; then
          echo "Patch failed! 'return 1;' not found at bad_version:"
          grep -A 10 "bad_version:" "$TARGET_FILE" || true
          exit 1
        fi
      else
        echo "Bypass hack not applied as per input parameter."
      fi
  
      rm -rf "out"

      GKI_KCONFIG_FRAGMENT_PATH="${{ github.workspace }}/wild_gki.fragment"
      GKI_DEFCONFIG_WRAPPER_PATH="${{ github.workspace }}/wild_gki.wrap.sh"

      cat > "${GKI_DEFCONFIG_WRAPPER_PATH}" <<EOF
      append_cmd POST_DEFCONFIG_CMDS 'if [ -f "${GKI_KCONFIG_FRAGMENT_PATH}" ]; then \${KERNEL_DIR}/scripts/kconfig/merge_config.sh -m -O \${OUT_DIR} \${OUT_DIR}/.config "${GKI_KCONFIG_FRAGMENT_PATH}"; fi && (cd \${KERNEL_DIR} && make O=\${OUT_DIR} olddefconfig)'
      EOF

      # Override expensive GKI build.sh artifact defaults we do not need in CI.
      GKI_BUILD_CONFIG_FRAGMENT_PATH="${{ github.workspace }}/gki_build_overrides.fragment"
      cat > "${GKI_BUILD_CONFIG_FRAGMENT_PATH}" <<'EOF'
      BUILD_GKI_ARTIFACTS=
      BUILD_GKI_CERTIFICATION_TOOLS=0
      BUILD_SYSTEM_DLKM=0

      # Skip heavy packaging steps we don't need in CI
      SKIP_VENDOR_BOOT=1
      SKIP_EXT_MODULES=1
      SKIP_CP_KERNEL_HDR=1
      SKIP_MRPROPER=1
      EOF

      export OUT_DIR="/home/runner/out"

      if [ -f "build/build.sh" ]; then
        #SKIP_MRPROPER=1 \
        LTO=thin \
        GKI_DEFCONFIG_FRAGMENT="${GKI_DEFCONFIG_WRAPPER_PATH}" \
        GKI_BUILD_CONFIG_FRAGMENT="${GKI_BUILD_CONFIG_FRAGMENT_PATH}" \
        BUILD_CONFIG=common/build.config.gki.aarch64 \
        build/build.sh -j"$(nproc)" \
        CC="/usr/bin/ccache clang" \
        CXX="/usr/bin/ccache clang+" \
        HOSTCC="/usr/bin/ccache clang" \
        HOSTCXX="/usr/bin/ccache clang+" \
        LD="${{ github.workspace }}/kernel/common/ld-wrapper" \
        HOSTLD="${{ github.workspace }}/kernel/common/ld-wrapper"
      else
        tools/bazel info output_base
        cp "${{ github.workspace }}/wild_gki.fragment" common/arch/arm64/configs/wild_gki.fragment
        if [[ ${{ inputs.version }} == "android16-6.12" ]]; then
          tools/bazel build \
            --config=fast \
            --config=stamp \
            --lto=default \
            --defconfig_fragment=//common:arch/arm64/configs/wild_gki.fragment \
            --disk_cache=/home/runner/.cache/bazel \
            //common:kernel_aarch64
        else
          tools/bazel build \
            --config=fast \
            --config=stamp \
            --lto=default \
            --defconfig_fragment=//common:arch/arm64/configs/wild_gki.fragment \
            --disk_cache=/home/runner/.cache/bazel \
            --distdir=dist \
            //common:kernel_aarch64_dist
        fi
        tools/bazel info output_base
      fi

      ls
      ls out

  - name: 'Gather Build Artifacts'
    shell: bash
    if: inputs.bypass == true
    working-directory: ${{ github.workspace }}
    run: |
      set -euo pipefail
      PATCH_FILE="${{ github.action_path }}/patches/bypass.patch"
      if [ -f "$PATCH_FILE" ]; then
        patch -d "${{ github.workspace }}/AnyKernel3" -p1 < "$PATCH_FILE"
      fi

      if [ -f "${{ github.workspace }}/kernel/out/${{ inputs.version }}/dist/Image" ]; then
        if [[ ${{ inputs.bypass }} == "true" ]]; then
          cp "${{ github.workspace }}/kernel/out/${{ inputs.version }}/dist/Image" "${{ github.workspace }}/AnyKernel3/Bypass-Image"
        else
          cp "${{ github.workspace }}/kernel/out/${{ inputs.version }}/dist/Image" "${{ github.workspace }}/AnyKernel3/Image"
        fi
          exit 0
        fi
      if [ -f "${{ github.workspace }}/kernel/bazel-bin/common/kernel_aarch64/Image" ]; then
        if [[ ${{ inputs.bypass }} == "true" ]]; then
          cp "${{ github.workspace }}/kernel/bazel-bin/common/kernel_aarch64/Image" "${{ github.workspace }}/AnyKernel3/Bypass-Image"
        else
          cp "${{ github.workspace }}/kernel/bazel-bin/common/kernel_aarch64/Image" "${{ github.workspace }}/AnyKernel3/Image"
        fi
        exit 0
      fi

      exit 1