{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "$id": "https://github.com/api-evangelist/uml/blob/main/json-schema/uml-diagram-schema.json",
  "title": "UML Diagram",
  "description": "Schema representing a UML diagram definition, including its type, source text, and rendered output metadata.",
  "type": "object",
  "properties": {
    "id": {
      "type": "string",
      "description": "Unique identifier for the diagram"
    },
    "title": {
      "type": "string",
      "description": "Human-readable title for the diagram"
    },
    "description": {
      "type": "string",
      "description": "Description of what the diagram represents"
    },
    "diagramType": {
      "type": "string",
      "description": "The type of UML or other diagram",
      "enum": [
        "class",
        "sequence",
        "activity",
        "usecase",
        "state",
        "component",
        "deployment",
        "object",
        "package",
        "timing",
        "interaction",
        "collaboration",
        "entity-relationship",
        "flowchart",
        "mindmap",
        "gantt",
        "other"
      ]
    },
    "source": {
      "type": "string",
      "description": "The plain-text source of the diagram (e.g., PlantUML or Mermaid syntax)"
    },
    "format": {
      "type": "string",
      "description": "The markup language used for the diagram source",
      "enum": [
        "plantuml",
        "mermaid",
        "graphviz",
        "d2",
        "structurizr",
        "nomnoml",
        "excalidraw",
        "other"
      ]
    },
    "encodedSource": {
      "type": "string",
      "description": "Deflate + base64url encoded version of the source for use with PlantUML/Kroki GET APIs"
    },
    "outputUrl": {
      "type": "string",
      "format": "uri",
      "description": "URL to the rendered diagram image (PNG, SVG, etc.)"
    },
    "outputFormat": {
      "type": "string",
      "description": "The output format of the rendered diagram",
      "enum": ["svg", "png", "jpeg", "pdf", "ascii"]
    },
    "tags": {
      "type": "array",
      "description": "Tags categorizing the diagram content",
      "items": {
        "type": "string"
      }
    },
    "created": {
      "type": "string",
      "format": "date-time",
      "description": "ISO 8601 timestamp when the diagram was created"
    },
    "modified": {
      "type": "string",
      "format": "date-time",
      "description": "ISO 8601 timestamp when the diagram was last modified"
    }
  },
  "required": ["diagramType", "source", "format"]
}