release-hook.yml

name: Firmware release hook
run-name: > # "MCH2022 firmware dev release v1.2.3"
  ${{ github.event.client_payload.device_name }} firmware
  ${{ github.event.client_payload.channel != 'release' && github.event.client_payload.channel || '' }}
  release ${{ github.event.client_payload.tag }}

on:
  repository_dispatch:
    types: [firmware-release]

jobs:
  pull-and-pr:
    name: Get new ${{ github.event.client_payload.device_name }} firmware & create PR
    runs-on: ubuntu-latest

    steps:
      - name: Checkout repo
        uses: actions/checkout@v3

      - name: Check payload
        id: input
        run: |
          EOF=$(dd if=/dev/urandom bs=15 count=1 status=none | base64)
          payload=$(
          cat << $EOF
          ${{ toJson(github.event.client_payload) }}
          $EOF
          );

          valid_payload=$(jq -r 'select(
            (.device_id   | type == "string") and
            (.device_name | type == "string") and
            (.tag     | type == "string") and
            (.channel | type == "string") and
            (.fw_main | type == "string")
          )' <<< $payload);

          [ -n "$valid_payload" ] || exit 1

          device_id="${{ github.event.client_payload.device_id }}"
          badge_json=$(jq -r --arg id "$device_id" '.[] | select(.id == $id)' badges.json)
          if [ -z "$badge_json" ]; then
            echo "No entry for device '$device_id' in badges.json" >&2
            exit 1
          fi

          # output checked payload fields
          echo "tag=${{ github.event.client_payload.tag }}" >> $GITHUB_OUTPUT
          echo "repo=$(jq -r '.firmware_repo' <<< $badge_json)" >> $GITHUB_OUTPUT
          echo "channel=${{ github.event.client_payload.channel }}" >> $GITHUB_OUTPUT
          echo "fw_main=${{ github.event.client_payload.fw_main }}" >> $GITHUB_OUTPUT
          echo "device_id=${{ github.event.client_payload.device_id }}" >> $GITHUB_OUTPUT
          echo "device_name=${{ github.event.client_payload.device_name }}" >> $GITHUB_OUTPUT

      - name: Get release info
        id: release_info
        run: |
          release_info=$(
            GITHUB_TOKEN='${{ secrets.GITHUB_TOKEN }}'
            gh release
              --repo "${{ steps.input.outputs.repo }}"
              view "${{ steps.input.outputs.tag }}"
          );
          echo "Release info:\n$release_info";

          release_header=$(awk '/[a-z]+:/' <<< $release_info)
          release_assets=$(grep "^asset:" <<< $release_header | cut -f 2-)
          release_description=$(awk '/--/,0' <<< $release_info | tail +2)

          # output info fields
          for label in 'title' 'tag' 'draft' 'prerelease' 'author' 'created' 'published' 'url'; do
            echo "$label=$(grep "^${label}:" <<< $release_header | cut -f 2-)" >> $GITHUB_OUTPUT;
          done
          EOF=$(dd if=/dev/urandom bs=15 count=1 status=none | base64)
          echo "assets<<$EOF\n$release_assets\n$EOF"           >> $GITHUB_OUTPUT
          echo "description<<$EOF\n$release_description\n$EOF" >> $GITHUB_OUTPUT

      - name: Fetch & Integrate ${{ steps.input.outputs.device_name }} release
        run: |
          version="${{ steps.input.outputs.tag }}"
          channel="${{ steps.input.outputs.channel }}"
          main_bin="${{ steps.input.outputs.fw_main }}"
          device_id="${{ steps.input.outputs.device_id }}"
          device_name="${{ steps.input.outputs.device_name }}"
          release_assets="${{ steps.release_info.outputs.assets }}"
          echo "Adopting $device_name firmware version $version to channel '$channel'";

          if ! grep -oq "^${main_bin}" <<< "$release_assets"; then
            echo "❌ no asset '$main_bin' on release";
            exit 1;
          fi
          gh release --repo "${{ steps.input.outputs.repo }}" \
            download "$version" \
            -p $main_bin \
            -O $([ $channel == 'release' ] && echo "${device_id}.bin" || echo "${device_id}_${channel}.bin") \
            --clobber

          main_elf=${main_bin/%.bin/.elf}
          if ! grep -oq "^${main_elf}" <<< "$release_assets"; then
            echo "⚠️ no asset '$main_elf' on release";
          else
            gh release --repo "${{ steps.input.outputs.repo }}" \
              download "$version" \
              -p "$main_elf" \
              -O "${device_id}-${version}.elf" \
              --clobber
          fi

          release_url="${{ steps.release_info.outputs.url }}"

          # update badges.json
          jq -r \
            --arg channel $channel \
            --arg version $version \
            --arg date    $(date -I) \
            --arg url     $release_url \
            'map(
              select(.id == "mch2022")
              | if $channel == "release" then .version else .["version_" + $channel] end = {
                name: $version,
                date: $date,
                url: $url
              }
            )' badges.json | tee badges.json.new && mv badges.json.new badges.json

      - id: create_pr
        name: Create PR
        uses: peter-evans/create-pull-request@v5
        env:
          message: >
            ${{ steps.input.outputs.device_name }} firmware
            ${{ steps.input.outputs.channel != 'release' && steps.input.outputs.channel || '' }}
            release ${{ steps.input.outputs.tag }}
        with:
          branch:         ${{ steps.input.outputs.device_id }}/${{ steps.input.outputs.channel }}
          title:          ${{ env.message }}
          commit-message: ${{ env.message }}
          assignees:      ${{ steps.release_info.outputs.author }}
          body:           ${{ steps.release_info.outputs.description }}
          delete-branch:  true