{
    "type": "object",
    "properties": {
        "protocol_version": {
            "type": "integer"
        },
        "game_version": {
            "type": "string"
        },
        "packets": {
            "type": "array",
            "items": {
                "type": "object",
                "properties": {
                    "id": { "type": "integer" },
                    "name": { "type": "string" },
                    "server": { "type": "boolean" },
                    "client": { "type": "boolean" },
                    "fields": {
                        "type": "array",
                        "items": {
                            "$ref": "#/definitions/field"
                        }
                    }
                },
                "required": [
                    "id",
                    "name"
                ]
            }
        }
    },
    "definitions": {
        "type": {
            "type": "object",
            "oneOf": [
                {
                    "properties": {
                        "type": {
                            "type": "string",
                            "enum": [
                                "bool",
                                "byte", "ubyte",
                                "short", "ushort",
                                "int", "uint",
                                "long", "ulong",
                                "float", "double",
                                "itemstack", "optional_itemstack",
                                "itemstack_nbt", "optional_itemstack_nbt",
                                "compoundtag",
                                "synchedentitydata"
                            ]
                        }
                    }
                },
                {
                    "properties": {
                        "type": { "type": "string", "const": "list" },
                        "item": { "$ref": "#/definitions/type" },
                        "size": { "type": "number" },
                        "sizetype": { "type": "string" },
                        "maxsize": { "type": "integer" }
                    },
                    "required": [ "item" ],
                    "oneOf": [
                        { "required": [ "size" ] },
                        { "required": [ "sizetype", "maxsize" ] }
                    ]
                },
                {
                    "properties": {
                        "type": { "type": "string", "enum": [ "string", "utfstring" ] },
                        "maxsize": { "type": "number" }
                    }
                },
                {
                    "properties": {
                        "type": { "type": "string", "enum": [ "bytes" ] },
                        "size": { "type": "number" },
                        "sizetype": {
                            "type": "string",
                            "enum": [
                                "ubyte", "byte",
                                "ushort", "short",
                                "uint", "int"
                            ]
                        },
                        "maxsize": { "type": "number" }
                    },
                    "oneOf": [
                        { "required": [ "size" ] },
                        { "required": [ "sizetype", "maxsize" ] }
                    ]
                },
                {
                    "properties": {
                        "type": { "type": "string", "const": "struct" },
                        "name": { "type": "string" },
                        "fields": {
                            "type": "array",
                            "items": { "$ref": "#/definitions/type" }
                        }
                    }
                }
            ],
            "properties": {
                "if": { "$ref": "#/definitions/condition" },
                "post": { "type": "array" },
                "proptype": { "type": "string" }
            },

            "required": [ "type" ]
        },
        "field": {
            "allOf": [
                {
                    "properties": {
                        "name": { "type": "string" }
                    },
                    "required": [ "name" ]
                },
                {
                    "$ref": "#/definitions/type"
                }
            ]
        },
        "condition": {
            "type": "array"
        }
    },
    "required": [
        "protocol_version",
        "game_version",
        "packets"
    ]
}