action.yml

name: 'Matrix outputs - read (filtered)'
description: 'Read outputs for matrix. Patched to filter artifact download.'
author: codingsloth@pm.me
branding:
  icon: 'chevrons-down'
  color: 'white'
inputs:
  matrix-step-name:
    required: true
    description: "Matrix step name"
outputs:
  result:
    description: "Outputs result"
    value: "${{ steps.context.outputs.result }}"
runs:
  using: "composite"
  steps:
    - name: 'Setup jq'
      uses: dcarbone/install-jq-action@v2.1.0
      with:
        version: 1.6
        force: 'true'

    - uses: actions/download-artifact@v4
      with:
        pattern: ${{ inputs.matrix-step-name }}-*

    - id: context
      shell: bash
      run: |
        result="$(find . -maxdepth 2 -type f -name "${{ inputs.matrix-step-name }}-*" -exec cat {} \; | jq -c --slurp 'map(to_entries | map(.key as $matrix_key | .value | map_values({($matrix_key): .}))) | flatten | reduce .[] as $item ({}; . * $item)' )"
        echo "result=${result}" >> $GITHUB_OUTPUT