├── .github
    └── workflows
    │   └── tip.yml
└── README.md


/.github/workflows/tip.yml:
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 1 | name: Suggest A Tip
 2 | run-name: How much do you want to tip ${{ github.actor }}?
 3 | on: [pull_request]
 4 | jobs:
 5 |   suggest_tips:
 6 |     permissions:
 7 |       pull-requests: write
 8 |     runs-on: ubuntu-latest
 9 |     steps:
10 |       - uses: actions/checkout@v3
11 |         with:
12 |           fetch-depth: 0
13 |       - name: Calculate the lines changed & the tip options.
14 |         id: count-lines
15 |         run: |
16 |           changed_lines=$(git diff --shortstat origin/main origin/${GITHUB_HEAD_REF} | awk '{s+=$4} {s+=$6} END {print s}')
17 |           opt_one=$(printf "%.2f" "$changed_lines")
18 |           opt_two=$(printf "%.2f" "$(echo "$changed_lines * 0.75" | bc)")
19 |           opt_three=$(printf "%.2f" "$(echo "$changed_lines * 0.50" | bc)")
20 |           echo "ONE=$opt_one" >> $GITHUB_ENV
21 |           echo "TWO=$opt_two" >> $GITHUB_ENV
22 |           echo "THREE=$opt_three" >> $GITHUB_ENV
23 |       - name: Comment the tip options on the PR.
24 |         uses: thollander/actions-comment-pull-request@v2
25 |         with:
26 |           message: |
27 |             Please choose an option to tip:
28 | 
29 |             | <h1>😁</h1> <a href="https://github.com/sponsors/${{ github.actor }}?frequency=one-time&amount=${{ env.ONE }}"><i>$1.00/line</i>: $${{ env.ONE }}</a> | <h1>😄</h1> <a href="https://github.com/sponsors/sampoder?frequency=one-time&amount=${{ env.TWO }}"><i>$0.75/line</i>: $${{ env.TWO }}</a> | <h1>😃</h1> <a href="https://github.com/sponsors/${{ github.actor }}?frequency=one-time&amount=${{ env.THREE }}"><i>$0.50/line</i>: $${{ env.THREE }}</a> |
30 |             | ----------- | ----------- |----------- |
31 |           comment_tag: tip
32 | 


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/README.md:
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1 | # Tipping on GitHub?
2 | 
3 | Tips are everywhere. Imagine if they were on GitHub. Here's a GitHub workflow that does just that:
4 | 
5 | ![Capture-2024-01-04-003515](https://github.com/sampoder/tipping/assets/39828164/da659146-7327-4550-8cf6-ad1995abac70)
6 | 
7 | Inspired by [this Instagram Reel](https://www.instagram.com/reel/C1mba_6LeK_/). And yes, it actually works. Try making a PR to [`sampoder/tipping`](https://github.com/sampoder/tipping); if you have GitHub sponsors enabled, the links will also work!
8 | 


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