name: 'Apply BBRv3 Patches'
description: 'Apply BBRv3 TCP congestion control patches with version-specific logic'
inputs:
  version:
    description: 'Kernel config version (e.g., android15-6.6)'
    required: true
  kernel_version:
    description: 'Kernel version (e.g., 6.1)'
    required: true
  sublevel:
    description: 'Kernel sublevel'
    required: true

runs:
  using: "composite"
  steps:
    - name: Apply Kernel Config for 5.10
      shell: bash
      working-directory: ${{ github.workspace }}/kernel/common
      if: inputs.kernel_version == '5.10'
      run: |
        sed -i 's/CONFIG_IP_SET_MAX/65534/g' net/netfilter/ipset/ip_set_core.c

    - name: Apply BBRv3 Patch
      shell: bash
      working-directory: ${{ github.workspace }}/kernel/common
      run: |
        set -euo pipefail
        if [[ ${{ inputs.version }} == "android16-6.12" ]]; then
          #patch -p1 < "${{ github.workspace }}/kernel_patches/common/bbrv3/0001-net-tcp-backport-BBRv3-to-android15-6.6.patch"
          #patch -p1 < ${{ github.action_path }}/patches/0001-net-tcp-backport-BBRv3-to-android16-6.12.patch
          echo "skipped"
        elif [[ ${{ inputs.version }} == "android15-6.6" ]]; then
          patch -p1 < "${{ github.workspace }}/kernel_patches/common/bbrv3/0001-net-tcp-backport-BBRv3-to-android15-6.6.patch"
        elif [[ ${{ inputs.version }} == "android14-6.1" ]]; then
          patch -p1 < "${{ github.workspace }}/kernel_patches/common/bbrv3/0001-net-tcp-backport-BBRv3-to-android14-6.1.patch"
        elif [[ ${{ inputs.version }} == "android14-5.15" ]]; then
          #patch -p1 < "${{ github.workspace }}/kernel_patches/common/bbrv3/0001-net-tcp-backport-BBRv3-to-android13-5.15.patch"
          patch -p1 < ${{ github.action_path }}/patches/0001-net-tcp-backport-BBRv3-to-android14-5.15.patch
        elif [[ ${{ inputs.version }} == "android13-5.15" ]]; then
          patch -p1 < "${{ github.workspace }}/kernel_patches/common/bbrv3/0001-net-tcp-backport-BBRv3-to-android13-5.15.patch"
          if [[ ${{ inputs.sublevel }} -le "43" ]]; then
            patch -p1 < ${{ github.action_path }}/patches/0002-net-tcp-add-tcp_snd_cwnd-and-tcp_snd_cwnd_set-helper-functions.patch
          fi
        elif [[ ${{ inputs.version }} == "android13-5.10" ]]; then
          patch -p1 < "${{ github.workspace }}/kernel_patches/common/bbrv3/0001-net-tcp-backport-BBRv3-to-android12-5.10.patch"
        elif [[ ${{ inputs.version }} == "android12-5.10" ]]; then
          patch -p1 < "${{ github.workspace }}/kernel_patches/common/bbrv3/0001-net-tcp-backport-BBRv3-to-android12-5.10.patch"
        fi

        if [[ ${{ inputs.version }} == "android12-5.10" || ${{ inputs.version }} == "android13-5.10" ]]; then
          if ! grep -qF 'int proc_dou8vec_minmax(' ./include/linux/sysctl.h; then
            patch -p1 < "${{ github.workspace }}/kernel_patches/common/bbrv3/sysctl_add_proc_dou8vec_minmax.patch"
            patch -p1 < "${{ github.workspace }}/kernel_patches/common/bbrv3/sysctl_fix_data-races_in_proc_dou8vec_minmax.patch"
          fi
        fi

        echo "[+] BBRv3 patches applied"

    - name: Enable BBRv3 Kernel Config
      uses: ./.github/actions/set-kernel-config
      with:
        config_list: |
          CONFIG_TCP_CONG_BBR3=y