name: Update "date_created" in new JSON files

on:
  pull_request:
    types:
      - opened
      - synchronize
  workflow_dispatch:

jobs:
  update-date-created:
    runs-on: ubuntu-latest
    permissions:
      contents: write
      pull-requests: write

    steps:
      - name: Checkout PR branch
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Identify new JSON files
        id: new-json-files
        run: |
          BASE_BRANCH=$(jq -r '.base.ref' < "$GITHUB_EVENT_PATH")
          git fetch origin $BASE_BRANCH
          NEW_JSON_FILES=$(git diff --diff-filter=A --name-only origin/$BASE_BRANCH HEAD -- 'json/*.json')
          echo "NEW_JSON_FILES=$NEW_JSON_FILES" >> $GITHUB_ENV

      - name: Update date_created in new JSON files
        if: env.NEW_JSON_FILES != ""
        run: |
          TODAY=$(date -u +%Y-%m-%d)
          for file in $NEW_JSON_FILES; do
            echo "Updating date_created in $file"
            jq --arg date "$TODAY" '.date_created = $date' "$file" > temp.json && mv temp.json "$file"
          done

      - name: Commit and push changes
        if: env.NEW_JSON_FILES != ""
        run: |
          git config --global user.name "github-actions[bot]"
          git config --global user.email "github-actions[bot]@users.noreply.github.com"
          git add $NEW_JSON_FILES
          git commit -m "Update date_created in new JSON files"
          git push origin HEAD:${{ github.head_ref }}