main_version_increment.yaml

name: Check Project Version Increment

on:
  pull_request:
    branches: [main]

jobs:
  check_version:
    runs-on: ubuntu-latest

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

      - name: Get Current Version from PR
        run: |
          PR_VERSION=$(grep 'PROJECT_VERSION=' .env | cut -d'=' -f2 | tr -d '"')
          echo "PR_VERSION=$PR_VERSION" >> $GITHUB_ENV

      - name: Get Previous Version from Main
        run: |
          git fetch origin main
          PREV_VERSION=$(git show origin/main:.env | grep 'PROJECT_VERSION=' | cut -d'=' -f2 | tr -d '"')
          echo "PREV_VERSION=$PREV_VERSION" >> $GITHUB_ENV

      - name: Validate Version Increment
        run: |
          compare_versions() {
            IFS='.' read -r -a CUR <<< "$PR_VERSION"
            IFS='.' read -r -a PREV <<< "$PREV_VERSION"

            if (( CUR[0] > PREV[0] )); then exit 0; fi
            if (( CUR[0] == PREV[0] && CUR[1] > PREV[1] )); then exit 0; fi
            if (( CUR[0] == PREV[0] && CUR[1] == PREV[1] && CUR[2] > PREV[2] )); then exit 0; fi
            echo "ERROR: PROJECT_VERSION must be incremented semantically. Current: $PR_VERSION, Previous: $PREV_VERSION"
            exit 1
          }
          compare_versions

      - name: Report Success
        run: |
          echo "PROJECT_VERSION successfully incremented: $PR_VERSION"