{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://raw.githubusercontent.com/api-evangelist/completedns/main/json-schema/completedns-dns-history-schema.json",
  "title": "CompleteDNS DNS History",
  "description": "Schema for the CompleteDNS v2 DNS history response.",
  "type": "object",
  "properties": {
    "domain": {
      "type": "string",
      "description": "The queried domain name."
    },
    "drops": {
      "type": "integer",
      "minimum": 0,
      "description": "Total nameserver drop events."
    },
    "changes": {
      "type": "integer",
      "minimum": 0,
      "description": "Total nameserver change events."
    },
    "years": {
      "type": "number",
      "minimum": 0,
      "description": "Years of history tracked."
    },
    "was_parked": {
      "type": "boolean",
      "description": "Whether the domain was ever parked."
    },
    "events": {
      "type": "array",
      "items": {
        "$ref": "#/$defs/event"
      }
    }
  },
  "required": ["domain", "events"],
  "$defs": {
    "event": {
      "type": "object",
      "properties": {
        "date": { "type": "string" },
        "type": {
          "type": "string",
          "enum": ["start_tracking", "dropped", "created", "change"]
        },
        "nameservers": {
          "type": "array",
          "items": { "type": "string" }
        },
        "changes": {
          "type": "array",
          "items": {
            "type": "object",
            "properties": {
              "action": { "type": "string", "enum": ["added", "removed"] },
              "nameserver": { "type": "string" }
            }
          }
        }
      },
      "required": ["type"]
    }
  }
}