check-commit-count.yml

name: CI

on:
    pull_request:
        types: [opened, synchronize]

jobs:
    check-commits:
        runs-on: ubuntu-latest
        steps:
            - name: Check number of commits in PR
              id: commits
              uses: actions/github-script@v6
              with:
                  script: |
                      const payload = await github.rest.pulls.listCommits({
                        owner: context.repo.owner,
                        repo: context.repo.repo,
                        pull_number: context.issue.number
                      });
                      return payload.data.length;

            - name: Post comment if commits are fewer than 2
              if: steps.commits.outputs.result < 2
              uses: actions/github-script@v6
              with:
                  script: |
                      github.rest.issues.createComment({
                        owner: context.repo.owner,
                        repo: context.repo.repo,
                        issue_number: context.issue.number,
                        body: 'This pull request does not contain the minimum required number of commits (2). Please add more commits.'
                      });

            - name: Fail the job if fewer than 2 commits
              if: steps.commits.outputs.result < 2
              run: |
                  echo "Failing the job because there are fewer than 2 commits."
                  exit 1