auto-respond-pr.yml

name: Auto Respond to PR

on:
    pull_request:
        types: [opened, synchronize, closed, ready_for_review]

jobs:
    auto_respond:
        if: github.actor != 'dependabot[bot]'
        runs-on: ubuntu-latest

        steps:
            - name: Checkout base branch
              uses: actions/checkout@v4
              with:
                  ref: ${{ github.event.pull_request.base.ref }}
                  repository: ${{ github.event.pull_request.head.repo.full_name }}
                  path: base

            - name: Checkout PR branch
              uses: actions/checkout@v4
              with:
                  ref: ${{ github.event.pull_request.head.ref }}
                  repository: ${{ github.event.pull_request.head.repo.full_name }}
                  path: pr
                  fetch-depth: 0

            - name: Run build script on base branch
              run: |
                  cd base
                  npm install
                  npm run build
                  cd ..

            - name: Run build script on PR branch
              run: |
                  cd pr
                  git config --global user.email "dax@duck.com"
                  git config --global user.name "dax"
                  echo ${{ github.event.pull_request.base.ref }}
                  git fetch origin ${{ github.event.pull_request.base.ref }}
                  git rebase -X theirs origin/${{ github.event.pull_request.base.ref }}
                  npm install
                  npm run build
                  cd ..

            - name: Create diff of file outputs
              run: |
                  node pr/.github/scripts/diff-directories.js base pr > diff.txt

            - name: Find Previous Comment
              uses: peter-evans/find-comment@v3
              id: find_comment
              with:
                  issue-number: ${{ github.event.pull_request.number }}
                  comment-author: 'github-actions[bot]'
                  body-includes: 'Generated file diff'
                  direction: last

            - name: Create Comment Body
              uses: actions/github-script@v7
              id: create_body
              with:
                  github-token: ${{ secrets.GITHUB_TOKEN }}
                  script: |
                      const fs = require('fs');
                      const prNumber = context.issue.number;
                      const diffOut = fs.readFileSync('diff.txt', 'utf8');
                      const commentBody = `
                      ### *[Beta]* Generated file diff
                      *Time updated:* ${new Date().toUTCString()}

                      ${diffOut}
                          `;
                      core.setOutput('comment_body', commentBody);
                      core.setOutput('pr_number', prNumber);

            - name: Create, or Update the Comment
              uses: peter-evans/create-or-update-comment@v4
              with:
                  issue-number: ${{ github.event.pull_request.number }}
                  comment-id: ${{ steps.find_comment.outputs.comment-id }}
                  body: ${{ steps.create_body.outputs.comment_body }}
                  edit-mode: replace