version_update_trigger.yml

name: Version trigger workflow

on: 
  pull_request:

jobs:
  build:
    runs-on: [self-hosted, k8s-runner]

    steps:
    - name: Checkout code
      uses: actions/checkout@v2

    - name: Fetch the pull request diff
      run: git fetch origin ${{ github.event.pull_request.base.sha }} ${{ github.sha }}

    - name: Check if a particular file has changed
      id: check_file
      run: |
        # Check if 'package.json' has changed in the PR
        if git diff --name-only ${{ github.event.pull_request.base.sha }} ${{ github.sha }} | grep -q 'package.json'; then
          echo "file_changed=true" >> $GITHUB_ENV
        else
          echo "file_changed=false" >> $GITHUB_ENV
        fi

    - name: Take action based on file change
      if: env.file_changed == 'true'
      run: |
        echo "version_line=$(grep -m 1 "\"version\":" ${GITHUB_WORKSPACE}/package.json)" >> $GITHUB_ENV
        
    - name: Post a comment on the PR
      if: env.file_changed == 'true'
      uses: actions/github-script@v6
      with:
        script: |
          const pr_number = ${GITHUB_REF.split('/')[2]};
          const message = "pg-core-sdk-version-update\n$version_line\nSDK: React-Native Standard Checkout SDK";
          
          await github.rest.issues.createComment({
            owner: context.repo.owner,
            repo: context.repo.repo,
            issue_number: pr_number,
            body: message,
          })