{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "#/components/schemas/PaymentTransaction",
  "title": "PaymentTransaction",
  "type": "object",
  "properties": {
    "id": {
      "type": "integer"
    },
    "invoice_id": {
      "type": "integer"
    },
    "amount": {
      "type": "number"
    },
    "currency": {
      "type": "string"
    },
    "success": {
      "type": "boolean"
    },
    "created_at": {
      "type": "string",
      "format": "date-time"
    },
    "reference": {
      "type": "string",
      "description": "Payment gateway reference or transaction ID"
    },
    "message": {
      "type": "string",
      "description": "Payment gateway response message"
    }
  }
}