pr-on-branch-push.yml

name: Pull Request on Push to branch
on: 
  push:
    branches-ignore:
      - main
      - dev

jobs:
  create-pull-request:
    runs-on: ubuntu-latest
    permissions:
      issues: read
      contents: read
      pull-requests: write
    steps:
    
      - name: Check out repository code
        uses: actions/checkout@v2
        with:
          fetch-depth: 0
          ref: dev

      - name: Check for branch changes
        id: check_branch_changes
        run: |
          NEW_BRANCH_SHA=$(git rev-parse "${{ github.sha }}")
          echo "This is the new branch sha: $NEW_BRANCH_SHA"
          
          DEV_BRANCH_SHA=$(git rev-parse "refs/heads/dev")
          echo "This is the new branch sha: $DEV_BRANCH_SHA"
          if [[ "${NEW_BRANCH_SHA}" == "${DEV_BRANCH_SHA}" ]]; then
              echo "::set-output name=no_differences::true"
              echo "No differences"
          else
            echo "::set-output name=no_differences::false"
            echo "There are differences"
          fi
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

      - name: Create PR
        if: steps.check_branch_changes.outputs.no_differences == 'false'
        run: |
          echo "Get the list of PR for that branch that are open"
          gh pr list -H ${{ github.ref_name}} -s "open"
          PR_COUNT=$(gh pr list -H ${{ github.ref_name}} -s "open" | wc -l)
          echo $PR_COUNT
          echo "Checking  if there are any PR already"
          if [[ $PR_COUNT -gt 0 ]]; then
            echo "Indeed there is at least one PR for this branch"
          else
            echo "There is no PR for this branch so we create one"
              gh pr create -B $BASE_BRANCH -H $BRANCH_TO_MERGE --title "$PR_TITLE" --body "$PR_BODY"
          fi
        env:
            GITHUB_TOKEN: ${{ secrets.GIT_WORKFLOW_TEST }}
            PR_TITLE: "Autocreated PR: ${{ github.ref_name}}"
            PR_BODY: "Created by Github action"
            BASE_BRANCH: "dev"
            BRANCH_TO_MERGE: ${{ github.ref}}

      - name: Get PR number
        if: steps.check_branch_changes.outputs.no_differences == 'false'
        id: get_pr_number
        run: |
          PR_NUMBER=$(gh pr view ${{ github.ref_name }} --json number --jq '.number')
          echo "PR Number: $PR_NUMBER"
          echo "::set-output name=pr_number::$PR_NUMBER"
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

      - name: Get the pull request data
        if: steps.check_branch_changes.outputs.no_differences == 'false'
        run: |
          gh api \
          -H "Accept: application/vnd.github+json" \
          -H "X-GitHub-Api-Version: 2022-11-28" \
          /repos/ines-gimeno-molina/workflows-test/pulls/$PR_NUMBER | jq -r '.issue_url'
        env:
          PR_NUMBER: ${{ steps.get_pr_number.outputs.pr_number}}
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}