{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://raw.githubusercontent.com/api-evangelist/eraser/main/json-schema/eraser-diagram-schema.json",
  "title": "Eraser Diagram",
  "description": "Schema for an Eraser diagram element within a file",
  "type": "object",
  "required": ["id", "diagramUrl", "diagramType", "code", "updatedAt"],
  "properties": {
    "id": {
      "type": "string",
      "description": "Unique diagram identifier"
    },
    "diagramUrl": {
      "type": "string",
      "format": "uri",
      "description": "Canvas URL for viewing the diagram in Eraser"
    },
    "diagramType": {
      "type": "string",
      "enum": [
        "sequence-diagram",
        "entity-relationship-diagram",
        "cloud-architecture-diagram",
        "flowchart-diagram",
        "bpmn-diagram"
      ],
      "description": "The type of this diagram"
    },
    "code": {
      "type": "string",
      "description": "Eraser DSL code defining the diagram content"
    },
    "updatedAt": {
      "type": "string",
      "format": "date-time",
      "description": "ISO 8601 timestamp of last modification"
    }
  }
}