{
    "$id": "https://schema.owlboard.info/data-ingress/darwin/ref/loading-category.schema.json",
    "$schema": "https://json-schema.org/draft-07/schema#",
    "title": "DarwinLoadingCatData",
    "type": "object",
    "properties": {
        "service_name": {
            "type": "string",
            "description": "Name of the service submitting the update"
        },
        "service_id": {
            "type": "string",
            "description": "ID of the service sending the message - usually a hostname"
        },
        "data_type": {
            "type": "string",
            "const": "raw",
            "description": "The type of data contained in this message object"
        },
        "sent_timestamp": {
            "type": "integer",
            "description": "Unix timestamp representing the time the message was sent"
        },
        "data_kind": {
            "type": "string",
            "const": "ref-darwin-loading-category",
            "description": "The data type contained in the message.  Currently supported PIS: PIS Data, Timetable: CIF or VSTP Data, Knowledgebase: Station Data"
        },
        "payload": {
            "type": "array",
            "additionalItems": false,
            "items": {
                "type": "object",
                "required": ["c", "n"],
                "properties": {
                    "c": {
                        "name": "code",
                        "type": "string",
                        "description": "The 'code' for the 'category'"
                    },
                    "t": {
                        "name": "typicalDescription",
                        "type": "string",
                        "description": "The 'typicalDescription' of the category"
                    },
                    "e": {
                        "name": "expectedDescription",
                        "type": "string",
                        "description": "The 'expectedDescription' of the category"
                    },
                    "d": {
                        "name": "definition",
                        "description": "The 'definition' of the category",
                        "type": "string"
                    },
                    "n": {
                        "name": "name",
                        "description": "The 'name' of the category",
                        "type": "string"
                    },
                    "i": {
                        "name": "image",
                        "description": "The 'image' for the category",
                        "type": "string"
                    },
                    "o": {
                        "name": "TOC",
                        "description": "The 'toc' for the category",
                        "type": "string"
                    }
                }
            }
        }
    },
    "required": ["service_name", "service_id", "data_type", "data_kind", "sent_timestamp"],
    "additionalProperties": false
}