{
    "$schema": "https://json-schema.org/draft/2020-12/schema",
    "title": "Poll",
    "type": "object",
    "properties": {
        "id": {
            "description": "Poll ID",
            "type": "string",
            "format": "uri"
        },
        "type": {
            "const": "Question"
        },
        "attributedTo": {
            "description": "ID of the actor who created this poll",
            "type": "string",
            "format": "uri"
        },
        "content": {
            "description": "Description of this poll (HTML)",
            "type": "string"
        },
        "endTime": {
            "description": "The end date of the poll",
            "type": "string",
            "format": "date-time"
        },
        "oneOf": {
            "description": "Poll options",
            "type": "array",
            "items": {"$ref": "#/$defs/PollOption"}
        },
        "anyOf": {
            "description": "Poll options",
            "type": "array",
            "items": {"$ref": "#/$defs/PollOption"}
        },
        "to": {
            "description": "Poll's intended audience",
            "oneOf": [
                {
                    "type": "string",
                    "format": "uri"
                },
                {
                    "type": "array",
                    "items": {
                        "type": "string",
                        "format": "uri"
                    }
                }
            ]

        },
        "updated": {
            "description": "The date when the last vote was received",
            "type": "string",
            "format": "date-time"
        }
    },
    "oneOf": [
        {
            "required": [
                "id",
                "type",
                "attributedTo",
                "content",
                "oneOf",
                "to"
            ]
        },
        {
            "required": [
                "id",
                "type",
                "attributedTo",
                "content",
                "anyOf",
                "to"
            ]
        }
    ],
    "$defs": {
        "PollOption": {
            "type": "object",
            "properties": {
                "type": {
                    "constant": "Note"
                },
                "name": {
                    "description": "The name of the poll option",
                    "type": "string"
                },
                "replies": {
                    "type": "object",
                    "properties": {
                        "type": {
                            "const": "Collection"
                        },
                        "totalItems": {
                            "description": "Total number of votes towards this option",
                            "type": "integer"
                        }
                    }
                }
            }
        }
    }
}