{
    "$schema": "http://json-schema.org/draft-04/schema#",

    "title": "repovizz2/datapack",
    "description": "Authoritative JSON schema for the repovizz2 datapack structure.",

    "type": "object",
    "properties": {
        "info": {
            "description": "Placeholder for generic information relative to the whole datapack.",
            "type": "object",
            "properties": {
                "keywords": {
                    "description": "List of keywords identifying the datapack, for easy search and discovery.",
                    "type": "array",
                    "items": { "type": "string" },
                    "uniqueItems": true
                },
                "description": {
                    "title": "Datapack Description",
                    "type": "string"
                },
                "id": {
                    "title": "Datapack ID",
                    "$ref": "#/definitions/uuid"
                },
                "name": {
                    "title": "Datapack Name",
                    "type": "string"
                },
                "author": {
                    "title": "Datapack Author",
                    "type": "string"
                }
            },
            "required": ["name", "author", "description", "keywords"]
        },
        "children": { "$ref": "#/definitions/nodeArray" }
    },
    "required": ["info", "children"],


    "definitions": {

        "uuid": {
            "type": "string",
            "pattern": "[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}"
        },

        "node": {
            "type": "object",
            "properties": {
                "class": {
                    "type": "string",
                    "enum": ["container", "data"]
                },
                "name": { "type": "string" },
                "text": { "type": "string" },
                "id": { "$ref": "#/definitions/uuid" }
            },
            "required": ["class", "name", "text"]
        },

        "containerNode": {
            "title": "Container Node",
            "description": "Node that holds other nodes and serves as an organizational tool.",
            "allOf": [
                { "$ref": "#/definitions/node" },
                {
                    "properties": {
                        "class": {
                            "type": "string",
                            "pattern": "container"
                        },
                        "children": { "$ref": "#/definitions/nodeArray" }
                    },
                    "required": ["children"]
                }
            ]
        },

        "dataNode": {
            "title": "Data Node",
            "description": "Node that holds a data pointer",
            "allOf": [
                { "$ref": "#/definitions/node" },
                {
                    "properties": {
                        "class": {
                            "type": "string",
                            "pattern": "data"
                        },
                        "type": { "$ref": "#/definitions/uuid" },
                        "meta": { "type": "object" },
                        "link": { "type": "string" }
                    },
                    "required": ["link"]
                }
            ]
        },

        "nodeArray": {
            "title": "Node Array",
            "description": "List of nodes, usually held within a Container Node.",
            "type": "array",
            "items": {
                "oneOf": [
                    { "$ref": "#/definitions/containerNode" },
                    { "$ref": "#/definitions/dataNode" }
                ]
            }
        }

    }
}