{
    "$schema"               : "http://json-schema.org/draft-04/schema#",
    "id"                    : "https://eddn.edcd.io/schemas/commodity/3#",
    "type"                  : "object",
    "additionalProperties"  : false,
    "required": [ "$schemaRef", "header", "message" ],
    "properties": {
        "$schemaRef": {
            "type"                  : "string"
        },
        "header": {
            "type"                  : "object",
            "additionalProperties"  : true,
            "required"              : [ "uploaderID", "softwareName", "softwareVersion" ],
            "properties"            : {
                "uploaderID": {
                    "type"          : "string"
                },
                "softwareName": {
                    "type"          : "string"
                },
                "softwareVersion": {
                    "type"          : "string"
                },
                "gatewayTimestamp": {
                    "type"          : "string",
                    "format"        : "date-time",
                    "description"   : "Timestamp upon receipt at the gateway. If present, this property will be overwritten by the gateway; submitters are not intended to populate this property."
                }
            }
        },
        "message": {
            "type"                  : "object",
            "additionalProperties"  : false,
            "required"              : [ "systemName", "stationName", "marketId", "timestamp", "commodities" ],
            "properties"            : {
                "systemName": {
                    "type"      : "string",
                    "minLength" : 1
                },
                "stationName": {
                    "type"      : "string",
                    "minLength" : 1
                },                
                "marketId": {
                    "type"      : "integer"
                },
                "horizons": {
                    "type"      : "boolean",
                    "description" : "Whether the sending Cmdr has a Horizons pass."
                },
                "odyssey": {
                    "type"      : "boolean",
                    "description" : "Whether the sending Cmdr has an Odyssey expansion."
                },                
                "timestamp": {
                    "type"      : "string",
                    "format"    : "date-time"
                },
                "commodities": {
                    "type"      : "array",
                    "description" : "Commodities returned by the Companion API, with illegal commodities omitted",
                    "items"     : {
                        "type"                  : "object",
                        "additionalProperties"  : false,
                        "required"              : [ "name", "meanPrice", "buyPrice", "stock", "stockBracket", "sellPrice", "demand", "demandBracket" ],
                        "properties"            : {
                            "name": {
                                "type"          : "string",
                                "minLength"     : 1,
                                "description"   : "Symbolic name as returned by the Companion API"
                            },
                            "meanPrice": {
                                "type"          : "integer"
                            },
                            "buyPrice": {
                                "type"          : "integer",
                                "description"   : "Price to buy from the market"
                            },
                            "stock": {
                                "type"          : "integer"
                            },
                            "stockBracket": {
                                "$ref"          : "#/definitions/levelType"
                            },
                            "sellPrice": {
                                "type"          : "integer",
                                "description"   : "Price to sell to the market"
                            },
                            "demand": {
                                "type"          : "integer"
                            },
                            "demandBracket": {
                                "$ref"          : "#/definitions/levelType"
                            },
                            "statusFlags": {
                                "type"          : "array",
                                "minItems"      : 1,
                                "uniqueItems"   : true,
                                "items"         : {
                                    "type"          : "string",
                                    "minLength"     : 1
                                }
                            }
                        }
                    }
                },
                "economies": {
                    "type"      : "array",
                    "items"     : {
                        "type"                  : "object",
                        "additionalProperties"  : false,
                        "required"              : [ "name", "proportion" ],
                        "properties"            : {
                            "name": {
                                "type"          : "string",
                                "minLength"     : 1,
                                "description"   : "Economy type as returned by the Companion API"
                            },
                            "proportion": {
                                "type"          : "number"
                            }
                        }
                    }
                },
                "prohibited": {
                    "type"          : "array",
                    "uniqueItems"   : true,
                    "items"         : {
                        "type"          : "string",
                        "minLength"     : 1
                    }
                }
            }
        }
    },
    "definitions": {
        "levelType": {
            "enum"          : [0, 1, 2, 3, ""],
            "description"   : "Note: A value of \"\" indicates that the commodity is not normally sold/purchased at this station, but is currently temporarily for sale/purchase"
        }
    }
}