name: 'Apply Kernel Branding & Timestamp'
description: 'Apply Wild kernel branding to kernel version string'

inputs:
  build_type:
    required: false
    type: string
    default: ""
  kernel_version:
    required: false
    type: string
    default: ""

runs:
  using: "composite"
  steps:
    - name: Apply Kernel Name Branding
      shell: bash
      working-directory: ${{ github.workspace }}/kernel/common
      run: |
        CONFIG_FRAGMENT="${GITHUB_WORKSPACE}/wild_gki.fragment"
        touch "$CONFIG_FRAGMENT"

        DEFCONFIG="${GITHUB_WORKSPACE}/kernel/common/arch/arm64/configs/gki_defconfig"

        if grep -q '^CONFIG_LOCALVERSION=' "$DEFCONFIG"; then
          LOCALVERSION_VALUE="$(grep -m1 '^CONFIG_LOCALVERSION=' "$DEFCONFIG" | sed -E 's/^CONFIG_LOCALVERSION="?([^"]*)"?$/\1/')"
          echo "CONFIG_LOCALVERSION=\"${LOCALVERSION_VALUE}-Wild\"" >> "$CONFIG_FRAGMENT"
        else
          echo 'CONFIG_LOCALVERSION="-Wild"' >> "$CONFIG_FRAGMENT"
        fi

        : > .scmversion

        echo "Getting last commit timestamp from kernel source..."

        COMMIT_TIMESTAMP=$(git log -1 --format=%ct 2>/dev/null || echo "$(date +%s)")
        KERNEL_BUILD_DATE=$(date -u)

        export SOURCE_DATE_EPOCH=$COMMIT_TIMESTAMP
        echo "SOURCE_DATE_EPOCH=$COMMIT_TIMESTAMP" >> $GITHUB_ENV
        
        export KBUILD_BUILD_TIMESTAMP="$KERNEL_BUILD_DATE"
        echo "KBUILD_BUILD_TIMESTAMP=$KERNEL_BUILD_DATE" >> $GITHUB_ENV