action.yml

name: PR Comment with Changes Breakdown
description: 'Comment on PR with a short summary of changes. They are classified according to your config.'
author: 'Boris Lykah'

inputs:
  diff-stat:
    description: 'The JSON object describing changes. This is the "stat" output of lykahb/paths-filter.'
    required: true
  minimum-files:
    description: 'There minimum number of files that must change before a comment is posted. If both minimum-files and minimum-lines are set, the conditions for both must be met before a comment is posted.'
    default: 0
  minimum-lines:
    description: 'The minimum number of lines of code that must change before a comment is posted. If both minimum-files and minimum-lines are set, the conditions for both must be met before a comment is posted.'
    default: 0

runs:
  using: 'composite'
  steps:
    - id: condition
      shell: bash
      run: |
        echo "passed=$(jq 'to_entries | map(.value) | (map(.additionCount + .deletionCount) | ${{ inputs.minimum-lines }} <= add) and (map (.fileCount) | ${{ inputs.minimum-files }} <= add)' <<< '${{ inputs.diff-stat }}')" >> "${GITHUB_OUTPUT}"
    - if: steps.condition.outputs.passed == 'true'
      uses: peter-evans/find-comment@v2
      id: find-comment
      with:
        issue-number: ${{ github.event.pull_request.number }}
        comment-author: 'github-actions[bot]'
        body-includes: '<!-- Paths Filter with Diff Stat -->'
    - if: steps.condition.outputs.passed == 'true'
      id: make-comment-body
      shell: bash
      run: |
        JQ_FILTER='to_entries | group_by(.key=="other") | flatten | .[] | select (.value.fileCount > 0) | "| \(.key) | \(.value.fileCount) | \(.value.additionCount) | \(.value.deletionCount) |"'
        COMMENT_BODY=$(echo '${{ inputs.diff-stat }}' | jq --raw-output "$JQ_FILTER")
        echo "comment_body<<PR_COMMENT_EOF" >> $GITHUB_OUTPUT
        echo "$COMMENT_BODY" >> $GITHUB_OUTPUT
        echo "PR_COMMENT_EOF" >> $GITHUB_OUTPUT
    - if: steps.condition.outputs.passed == 'true'
      uses: peter-evans/create-or-update-comment@v2
      id: create-or-update-comment
      with:
        comment-id: ${{ steps.find-comment.outputs.comment-id }}
        issue-number: ${{ github.event.pull_request.number }}
        body: |
          <!-- Paths Filter with Diff Stat -->

          | Group  | Files changed | Additions | Deletions |
          | ------ | ------------- | --------- | --------- |
          ${{ steps.make-comment-body.outputs.comment_body }}
        edit-mode: replace

branding:
  color: blue
  icon: message-square