{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "$id": "https://cdn.jsdelivr.net/npm/@pie-element/drawing-response@13.0.6/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"
    },
    "drawables": {
      "type": "array",
      "items": {
        "$ref": "#/definitions/DrawingResponseDrawable"
      },
      "description": "The shapes the learner drew"
    },
    "texts": {
      "type": "array",
      "items": {
        "$ref": "#/definitions/DrawingResponseText"
      },
      "description": "The text boxes the learner added"
    },
    "width": {
      "type": "number",
      "description": "Width of the drawing area when the session was saved; delivery restores the drawing area to it"
    }
  },
  "definitions": {
    "DrawingResponseDrawable": {
      "type": "object",
      "properties": {
        "type": {
          "type": "string",
          "enum": [
            "FreePathDrawable",
            "LineDrawable",
            "RectangleDrawable",
            "CircleDrawable",
            "EraserDrawable"
          ],
          "description": "The tool that drew the shape"
        },
        "startx": {
          "type": "number",
          "description": "x position where drawing started"
        },
        "starty": {
          "type": "number",
          "description": "y position where drawing started"
        },
        "createdAt": {
          "type": "string",
          "description": "ISO timestamp of when the shape was drawn; it orders undo"
        },
        "fillColor": {
          "type": "string",
          "description": "Fill color of rectangles and circles"
        },
        "outlineColor": {
          "type": "string",
          "description": "Outline color of rectangles and circles"
        },
        "paintColor": {
          "type": "string",
          "description": "Color applied with the paint tool"
        },
        "points": {
          "type": "array",
          "items": {
            "type": "number"
          },
          "description": "Flat x, y coordinate list of free paths and eraser strokes"
        },
        "posX": {
          "type": "number",
          "description": "x offset after the shape was dragged"
        },
        "posY": {
          "type": "number",
          "description": "y offset after the shape was dragged"
        },
        "x": {
          "type": "number",
          "description": "End x of lines and rectangles; center x of circles"
        },
        "y": {
          "type": "number",
          "description": "End y of lines and rectangles; center y of circles"
        },
        "width": {
          "type": "number",
          "description": "Width of rectangles"
        },
        "height": {
          "type": "number",
          "description": "Height of rectangles"
        },
        "radius": {
          "type": "number",
          "description": "Radius of circles"
        }
      },
      "required": [
        "type"
      ],
      "description": "A shape the learner drew, serialized from its drawing tool."
    },
    "DrawingResponseText": {
      "type": "object",
      "properties": {
        "id": {
          "type": "string",
          "description": "Identifier of the text box"
        },
        "type": {
          "type": "string",
          "const": "text-entry",
          "description": "Always \"text-entry\""
        },
        "text": {
          "type": "string",
          "description": "The text shown on the canvas"
        },
        "value": {
          "type": "string",
          "description": "The value of the text box's editor"
        },
        "label": {
          "type": "string",
          "description": "Placeholder shown before the learner edits the text box"
        },
        "isDefault": {
          "type": "boolean",
          "description": "Indicates the text box still shows its placeholder"
        },
        "x": {
          "type": "number",
          "description": "x position"
        },
        "y": {
          "type": "number",
          "description": "y position"
        },
        "width": {
          "type": "number",
          "description": "Width of the text box"
        },
        "createdAt": {
          "type": "string",
          "description": "ISO timestamp of when the text box was added; it orders undo"
        },
        "textVisible": {
          "type": "boolean",
          "description": "Indicates the text node is shown"
        },
        "transformerVisible": {
          "type": "boolean",
          "description": "Indicates the resize handles are shown"
        },
        "textareaVisible": {
          "type": "boolean",
          "description": "Indicates the editor is shown"
        }
      },
      "required": [
        "id"
      ],
      "description": "A text box the learner added. It also carries the Konva text node's attributes (scale, rotation, font size)."
    }
  }
}