{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "$id": "https://cdn.jsdelivr.net/npm/@pie-element/extended-text-entry@16.1.1/dist/schemas/session.schema.json",
  "type": "object",
  "properties": {
    "id": {
      "type": "string",
      "description": "Identifier of the session"
    },
    "element": {
      "type": "string",
      "description": "The element the session belongs to"
    },
    "value": {
      "type": "string",
      "description": "The student's response, as HTML"
    },
    "annotations": {
      "type": "array",
      "items": {
        "$ref": "#/definitions/ExtendedTextEntryAnnotation"
      },
      "description": "The instructor's annotations on the response"
    },
    "comment": {
      "type": "string",
      "description": "The instructor's overall comment on the response"
    }
  },
  "definitions": {
    "ExtendedTextEntryAnnotation": {
      "type": "object",
      "properties": {
        "id": {
          "type": "string",
          "description": "Identifier of the annotation"
        },
        "label": {
          "type": "string",
          "description": "The annotation text shown beside the response"
        },
        "type": {
          "type": "string",
          "enum": [
            "positive",
            "negative"
          ],
          "description": "Indicates the type of the annotation"
        },
        "quote": {
          "type": "string",
          "description": "The annotated text"
        },
        "start": {
          "type": "number",
          "description": "Start of the annotated text, as a character offset in the response's text content"
        },
        "end": {
          "type": "number",
          "description": "End of the annotated text, as a character offset in the response's text content"
        }
      },
      "required": [
        "id",
        "label",
        "type",
        "quote",
        "start",
        "end"
      ],
      "description": "An annotation an instructor placed on the student's response"
    }
  }
}