name: Update JSON Date

on:
  schedule:
    - cron: "0 */6 * * *"  # Läuft alle 6 Stunden
  workflow_dispatch:

jobs:
  check-open-prs:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout Repository
        uses: actions/checkout@v4

      - name: Get Open PRs
        id: list_prs
        run: |
          echo "Fetching open PRs..."
          PRS=$(gh pr list --state open --json number --jq '.[].number' || echo "")

          if [[ -z "$PRS" ]]; then
            echo "No open PRs found."
            exit 0
          fi

          echo "$PRS" | tr ' ' '\n' > pr_list.txt
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}

      - name: Process Each PR
        if: success()
        run: |
          TODAY=$(date -u +"%Y-%m-%d")
          
          while read -r PR_NUMBER; do
            echo "Processing PR #$PR_NUMBER"

            BRANCH_NAME=$(gh pr view $PR_NUMBER --json headRefName --jq '.headRefName')
            REPO_NAME="${{ github.repository }}"

            # Prüfen, ob der Branch remote existiert
            if ! git ls-remote --exit-code origin "$BRANCH_NAME"; then
              echo "Branch $BRANCH_NAME für PR #$PR_NUMBER existiert nicht, überspringe..."
              continue
            fi

            # Checkout PR Branch
            git fetch origin "$BRANCH_NAME"
            git checkout -B "$BRANCH_NAME" "origin/$BRANCH_NAME"

            # Get newly added JSON files
            NEW_JSON_FILES=$(gh api repos/$REPO_NAME/pulls/$PR_NUMBER/files --jq '.[] | select(.status == "added") | .filename' | grep '^json/.*\.json$' || true)

            if [[ -z "$NEW_JSON_FILES" ]]; then
              echo "No new JSON files in PR #$PR_NUMBER"
              continue
            fi

            UPDATED=false

            for FILE in $NEW_JSON_FILES; do
              DATE_IN_JSON=$(jq -r '.date_created' "$FILE")

              if [[ "$DATE_IN_JSON" != "$TODAY" ]]; then
                echo "Updating $FILE: $DATE_IN_JSON -> $TODAY"
                jq --arg date "$TODAY" '.date_created = $date' "$FILE" > tmp.json && mv tmp.json "$FILE"
                UPDATED=true
              fi
            done

            if [[ "$UPDATED" == "true" ]]; then
              git config --global user.name "github-actions[bot]"
              git config --global user.email "github-actions[bot]@users.noreply.github.com"
              git commit -am "Update date_created in new JSON files"
              git push origin "$BRANCH_NAME"
            else
              echo "No updates needed for PR #$PR_NUMBER"
            fi
          done < pr_list.txt
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}