name: Auto Update Latest JSON-Datei

on:
  push:
    branches:
      - main
  workflow_dispatch:

jobs:
  update-json-dates:
    runs-on: ubuntu-latest

    permissions:
      contents: write
      pull-requests: write

    steps:
      - name: Generate a token
        id: generate-token
        uses: actions/create-github-app-token@v1
        with:
          app-id: ${{ vars.APP_ID }}
          private-key: ${{ secrets.APP_PRIVATE_KEY }}

      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Set up Git
        run: |
          git config --global user.name "GitHub Actions"
          git config --global user.email "github-actions[bot]@users.noreply.github.com"

      - name: Find latest created JSON file
        id: find_latest_json
        run: |
          LATEST_JSON=$(git log --diff-filter=A --name-only --pretty=format: -- json/*.json | tail -n 1 || true)

          if [[ -z "$LATEST_JSON" ]]; then
            echo "No new JSON files found."
            echo "CHANGED=false" >> $GITHUB_ENV
          else
            echo "Latest JSON file: $LATEST_JSON"
            echo "LATEST_JSON=$LATEST_JSON" >> $GITHUB_ENV
            echo "CHANGED=true" >> $GITHUB_ENV
          fi

      - name: Run update script
        if: env.CHANGED == 'true'
        run: |
          chmod +x .github/workflows/scripts/update-json.sh
          .github/workflows/scripts/update-json.sh "$LATEST_JSON"

      - name: Commit and create PR if changes exist
        if: env.CHANGED == 'true'
        run: |
          git add json/*.json
          git commit -m "Auto-update date_created in latest JSON file"
          git checkout -b pr-update-json-date
          git push origin pr-update-json-date --force
          gh pr create --title "[core] Auto-update latest JSON file" \
                       --body "This PR is auto-generated to update the `date_created` field in the latest created JSON file." \
                       --head pr-update-json-date \
                       --base main \
                       --label "automated pr"
        env:
          GH_TOKEN: ${{ steps.generate-token.outputs.token }}

      - name: Approve pull request
        if: env.CHANGED == 'true'
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          PR_NUMBER=$(gh pr list --head "pr-update-json-date" --json number --jq '.[].number')
          if [ -n "$PR_NUMBER" ]; then
            gh pr review $PR_NUMBER --approve
          fi