name: Build kernel cache
on:
  workflow_dispatch:
  workflow_call:
    inputs:
      ACCESS_NAME:
       required: false
       type: string
       default: ${{ github.repository_owner }}
      BUILD_BRANCH:
       required: false
       type: string
       default: 'main'
      BUILD_RUNNER:
       required: false
       type: string
       default: "ubuntu-latest"
    secrets:
      ACCESS_TOKEN:
        required: true
      KEY_TORRENTS:
        required: false
      KNOWN_HOSTS_UPLOAD:
        required: false

jobs:

  prepare:

    name: "Make JSON"
    if: ${{ github.repository_owner == 'armbian' }}
    #runs-on: ubuntu-latest
    runs-on: fast
    outputs:
      matrix: ${{steps.json.outputs.JSON_CONTENT}}
    steps:

      - name: Runner clean
        uses: armbian/actions/runner-clean@main

      - name: Checkout Armbian Framework
        uses: actions/checkout@v4
        with:
          repository: armbian/build
          ref:  "${{ inputs.BUILD_BRANCH }}"
          fetch-depth: 1
          clean: false
          path: build

      - name: Checkout Armbian OS
        uses: actions/checkout@v4
        with:
          repository: armbian/os
          ref:  main
          fetch-depth: 1
          clean: false # true is default. it *will* delete the hosts /dev if mounted inside.
          path: os

      - name: Build JSON
        id: json
        run: |
        
          # Make a list of valid pairs from our config
          RUNNERS=("alfa" "beta" "gama")
          i=0
          echo 'JSON_CONTENT<<EOF' >> $GITHUB_OUTPUT          
          for BRANCH in legacy current midstream edge; do
              FILES=$(cat os/targets/*.conf | grep $BRANCH | grep -v "^$" | grep -v "^#" | sed -n $LINE'p' | cut -d " " -f1 | uniq)
              if [ -z "${FILES}" ]; then
                continue
              fi              
              while IFS= read -r line; do
              BOARDFAMILY=$(cat build/config/boards/$line.* | grep BOARDFAMILY | cut -d'"' -f2)
              BOARD=$line
              source build/config/boards/$line.conf 2> /dev/null || true
              source build/config/boards/$line.wip 2> /dev/null || true
              source build/config/boards/$line.tvb 2> /dev/null || true
              source build/config/sources/families/${BOARDFAMILY}.conf 2> /dev/null || true
              
              # runners are getting random tags from the pool
              RUNNER=$(echo ${RUNNERS[$i]})
              i=$((i+1))
              [[ $i -eq 3 ]] && i=0
              echo "${LINUXFAMILY}:${BOARDFAMILY}:${BRANCH}:${line}:${RUNNER}"
              done <<< "$FILES"
          done | sort | uniq | sort -u -t: -k1,3 | cut -d":" -f3,4,5 | sort | uniq | sed "s/:/ /g" | awk '{ printf "%s%s%s\n", "{\"board\":\""$2"\",", "\"branch\":\""$1"\",", "\"runner\":\""$3"\"}" }' | jq -s >> $GITHUB_OUTPUT
          echo 'EOF' >> $GITHUB_OUTPUT

  kernel:

    if: ${{ github.repository_owner == 'armbian' }}
    needs: [ prepare ]
    name: "${{ matrix.board }} ${{ matrix.branch }} ${{ matrix.runner }}"
    runs-on: "${{ matrix.runner }}"
    strategy:
      fail-fast: false
      matrix:
        include: ${{ fromJSON(needs.prepare.outputs.matrix) }}
    
    env:
      BRANCH: "${{ matrix.branch }}"
      BOARD: "${{ matrix.board }}"
      OCI_TARGET_BASE: "ghcr.io/armbian/cache-kernel/"

    steps:

      - name: Runner clean
        uses: armbian/actions/runner-clean@main

        # Login to ghcr.io, for later uploading rootfs to ghcr.io
      - name: Docker Login to GitHub Container Registry
        uses: docker/login-action@v3
        with:
          registry: ghcr.io
          username: ${{ inputs.ACCESS_NAME }}      # GitHub username or org
          password: ${{ secrets.ACCESS_TOKEN }}    # GitHub actions builtin token. repo has to have pkg access.

      - name: Checkout build repo
        uses: actions/checkout@v4
        with:
          repository: ${{ github.repository_owner }}/build
          ref:  "${{ inputs.BUILD_BRANCH }}"
          fetch-depth: 1
          clean: false

      - name: Build Kernel ${{env.BOARD}}:${{env.BRANCH}}
        id: kernel
        run: |

          # BRANCH and BOARD are in the env, but Docker doesn't know that; (sudo has --preserve-env). So we need to pass them as args.
          # SHARE_LOG=yes to share logs to pastebin
          sudo rm -rf output/debs/* || true
          bash ./compile.sh kernel "BRANCH=${{env.BRANCH}}" "BOARD=${{env.BOARD}}" SHARE_LOG=yes CLEAN_LEVEL="alldebs" FORCE_ARTIFACTS_DOWNLOAD="yes"

      - name: Install SSH key for storage
        env:
          KEY_TORRENTS: ${{ secrets.KEY_TORRENTS }}
        if: env.KEY_TORRENTS != null
        uses: shimataro/ssh-key-action@v2
        with:
          key: ${{ secrets.KEY_TORRENTS }}
          known_hosts: ${{ secrets.KNOWN_HOSTS_UPLOAD }}
          if_key_exists: replace

      - name: Deploy to server
        env:
          KEY_TORRENTS: ${{ secrets.KEY_TORRENTS }}
        if: env.KEY_TORRENTS != null

        run: |
          if ! command -v "lftp" > /dev/null 2>&1; then
             sudo apt-get -y -qq install lftp
          fi
          lftp -u upload, -e "set net:timeout 4;set net:max-retries 6;mirror -R --include-glob *.deb --no-empty-dirs --parallel=8 --no-perms output/debs/. debs-beta/ ;bye" sftp://users.armbian.com