{
  "$schema": "http://json-schema.org/draft-07/schema",
  "type": "array",
  "items": {
    "type": "object",
    "properties": {
      "subdomain": {
        "type": "string"
      },
      "url": {
        "type": "string"
      },
      "email": {
        "type": "string",
        "format": "email"
      },
      "type": {
        "type": "string",
        "enum": ["A", "CNAME", "TXT", "MX"]
      }
    },
    "required": ["subdomain", "email"],
    "additionalProperties": false,
    "if": {
      "anyOf": [
        {
          "properties": {
            "type": {
              "const": "CNAME"
            }
          }
        },
        {
          "not": {
            "required": ["type"]
          }
        }
      ]
    },
    "then": {
      "properties": {
        "url": {
          "type": "string",
          "pattern": "^(https?://)?(?:[a-zA-Z0-9-]+\\.){1,}(?:[a-zA-Z0-9-]{2,})\\/?$"
        }
      },
      "required": ["url"]
    },
    "else": {}
  }
}