name: Submodule Updates

on:
  push:
    branches: [develop]
  schedule:
    - cron: '0 12 * * *'

jobs:
  check_submodules:
    name: Pull Request for updated submodules
    runs-on: ubuntu-latest
    env:
      PARENT_REPOSITORY: 'EDCD/EDMarketConnector'
      CHECKOUT_BRANCH: 'develop'
      PR_AGAINST_BRANCH: 'develop'
      OWNER: 'EDCD'

    steps:
      - uses: actions/checkout@v3
        with:
          ref: '${{ env.CHECKOUT_BRANCH }}'
          submodules: true

      - name: Update submodules
        shell: bash
        run: |
          git config user.name github-actions
          git config user.email github-actions@github.com
          git submodule update --remote

      - name: Check for changes
        id: check_for_changes
        continue-on-error: true
        run: |
          changes=$(git status --porcelain)
          git status --porcelain
          if [ -n "${changes}" ];
          then
            echo 'changes=true' >> $GITHUB_OUTPUT
            echo "changes_text=${changes}" >> $GITHUB_OUTPUT
          else
            echo 'changes=false' >> $GITHUB_OUTPUT
          fi
          exit 0

      - name: Create or Update submodules changes branch
        if: steps.check_for_changes.outputs.changes == 'true'
        run: |
          git fetch origin "submodule-change/$GITHUB_RUN_ID" || git checkout -b "submodule-change/$GITHUB_RUN_ID" $CHECKOUT_BRANCH
          git commit -am "updating submodules"
          git push --set-upstream origin "submodule-change/$GITHUB_RUN_ID"

      - name: Create or Update pull request against target branch
        if: steps.check_for_changes.outputs.changes == 'true'
        uses: actions/github-script@v6
        with:
          github-token: "${{ secrets.GITHUB_TOKEN }}"
          script: |
            const { data: pulls } = await github.rest.pulls.list({
              owner: '${{ github.repository_owner }}',
              repo: '${{ github.repository }}'.split('/')[1].trim(),
              head: 'submodule-change/${{ github.run_id }}',
              base: '${{ env.PR_AGAINST_BRANCH }}',
              state: 'open',
            });
            if (pulls.length > 0) {
              // If an open pull request exists, update it
              const pull_number = pulls[0].number;
              await github.rest.pulls.update({
                owner: '${{ github.repository_owner }}',
                repo: '${{ github.repository }}'.split('/')[1].trim(),
                pull_number,
                body: '${{ steps.check_for_changes.outputs.changes_text }}',
              });
            } else {
              // If no open pull request exists, create a new one
              await github.rest.pulls.create({
                owner: '${{ github.repository_owner }}',
                repo: '${{ github.repository }}'.split('/')[1].trim(),
                head: 'submodule-change/${{ github.run_id }}',
                base: '${{ env.PR_AGAINST_BRANCH }}',
                title: `[Auto-generated] Submodule Updates ${process.env.GITHUB_RUN_ID}`,
                body: '${{ steps.check_for_changes.outputs.changes_text }}',
              });
            }