comment-diff.yaml

name: "Generate New Spec Diff"

on:
  issue_comment:
    types: [created]

permissions: read-all

jobs:
  dump_contexts_to_log:
    runs-on: ubuntu-latest
    steps:
      - name: Dump GitHub context
        env:
          GITHUB_CONTEXT: ${{ toJson(github) }}
        run: echo "$GITHUB_CONTEXT"
  comment-changed-workflow:
    name: 'Comment Spec Diff'
    runs-on: ubuntu-latest
    if: ${{ github.event.issue.pull_request && (github.event.comment.author_association == 'MEMBER' || github.event.comment.author_association == 'OWNER') && startsWith(github.event.comment.body, '/diff') }}
    permissions:
      pull-requests: write
    steps:
      - uses: actions/checkout@v4
      - uses: r-lib/actions/pr-fetch@v2
        with:
          repo-token: ${{ secrets.GITHUB_TOKEN }}
      - name: "Record DIFF"
        id: dl
        run: |
          echo "body<<EOF" >> $GITHUB_ENV
          echo "" >> $GITHUB_ENV
          old=$(ls -d */ | sort | tail -n 2 | head -n 1)
          new=$(ls -d */ | sort | tail -n 1)
          echo "Here are your diffs for this pull request" >> $GITHUB_ENV
          echo "" >> $GITHUB_ENV
          echo '## `admin-schema.json`' >> $GITHUB_ENV
          echo "" >> $GITHUB_ENV
          echo '```diff' >> $GITHUB_ENV
          echo "$(diff -u ${old}admin-schema.json ${new}admin-schema.json)" >> $GITHUB_ENV
          echo '```' >> $GITHUB_ENV
          echo "" >> $GITHUB_ENV
          echo '## `tasks-schema.json`' >> $GITHUB_ENV
          echo "" >> $GITHUB_ENV
          echo '```diff' >> $GITHUB_ENV
          echo "$(diff -u ${old}tasks-schema.json ${new}tasks-schema.json)" >> $GITHUB_ENV
          echo '```' >> $GITHUB_ENV
          echo "EOF" >> $GITHUB_ENV
      - name: "Comment on PR"
        uses: carpentries/actions/comment-diff@5d73d6a34b013488264890868d8eeab1edffdf2e
        with:
          pr: ${{ github.event.issue.number }}
          body: ${{ env.body }}