{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "#/components/schemas/CampaignAnalytics",
  "title": "CampaignAnalytics",
  "type": "object",
  "properties": {
    "campaign_id": {
      "type": "string",
      "description": "Campaign identifier"
    },
    "impressions": {
      "type": "integer",
      "description": "Total impressions served"
    },
    "clicks": {
      "type": "integer",
      "description": "Total clicks"
    },
    "ctr": {
      "type": "number",
      "description": "Click-through rate"
    },
    "spend": {
      "type": "number",
      "description": "Total spend in USD"
    },
    "accounts_reached": {
      "type": "integer",
      "description": "Number of unique accounts reached"
    },
    "accounts_engaged": {
      "type": "integer",
      "description": "Number of accounts showing engagement"
    },
    "cpm": {
      "type": "number",
      "description": "Cost per thousand impressions"
    },
    "start_date": {
      "type": "string",
      "format": "date",
      "description": "Analytics period start"
    },
    "end_date": {
      "type": "string",
      "format": "date",
      "description": "Analytics period end"
    }
  }
}