app/ads/ads_config.json

{
  "publisher_id": "",
  "ad_units": {
    "sidebar": {
      "ad_unit_id": "1234567890",
      "ad_format": "display",
      "width": 300,
      "height": 250,
      "slot": "sidebar-ad",
      "enabled": true
    },
    "footer": {
      "ad_unit_id": "0987654321",
      "ad_format": "display",
      "width": 728,
      "height": 90,
      "slot": "footer-ad",
      "enabled": true
    },
    "reward_video": {
      "ad_unit_id": "5678901234",
      "ad_format": "video",
      "slot": "reward-video-ad",
      "enabled": true,
      "reward_credits": 10
    }
  }
}