{
    "$schema": "https://json-schema.org/draft/2020-12/schema",
    "$id": "https://opendmi.org/schemas/opendmi.json",
    "title": "OpenDMI JSON schema",
    "description": "Schema of the documents `opendmi export --format=json` writes",

    "type": "object",
    "properties": {
        "entry": {
            "description": "Entry point data",
            "type": "object",
            "properties": {
                "smbios-version": {
                    "description": "SMBIOS version the entry point declares",
                    "$ref": "#/$defs/version"
                }
            },
            "required": ["smbios-version"],
            "additionalProperties": false
        },
        "table": {
            "description": "Structures of the table, in the order the table holds them",
            "type": "array",
            "items": { "$ref": "#/$defs/entity" }
        }
    },
    "required": ["entry", "table"],
    "additionalProperties": false,

    "$defs": {
        "entity": {
            "description": "SMBIOS structure",
            "type": "object",
            "properties": {
                "handle": { "$ref": "#/$defs/handle" },
                "type": {
                    "description": "Structure type",
                    "type": "integer",
                    "minimum": 0,
                    "maximum": 255
                },
                "length": {
                    "description": "Total length of the structure, including its header and its strings",
                    "type": "integer",
                    "minimum": 4
                },
                "level": {
                    "description": "Version of the specification the structure conforms to, or null if the structure is not decoded or is not versioned",
                    "oneOf": [
                        { "$ref": "#/$defs/version" },
                        { "type": "null" }
                    ]
                },
                "state": {
                    "description": "State flags of the structure",
                    "type": "array",
                    "items": {
                        "enum": ["decoded", "linked", "valid", "incomplete", "partial"]
                    },
                    "uniqueItems": true
                },
                "description": {
                    "description": "Name of the structure type",
                    "type": "string"
                },
                "attributes": {
                    "description": "Decoded values of the structure, keyed by the codes of the attributes of its type",
                    "$ref": "#/$defs/attributes"
                },
                "properties": {
                    "description": "String properties added by type 46 structures",
                    "type": "array",
                    "items": { "$ref": "#/$defs/property" }
                },
                "overlays": {
                    "description": "Additional information entries (type 40) applied to the structure",
                    "type": "array",
                    "items": { "$ref": "#/$defs/overlay" }
                },
                "data": {
                    "description": "Formatted area of the structure, including its header, in Base64",
                    "type": "string",
                    "contentEncoding": "base64"
                },
                "strings": {
                    "description": "Strings of the structure, the first one being string 1",
                    "type": "array",
                    "items": { "type": "string" },
                    "minItems": 1,
                    "maxItems": 255
                }
            },
            "required": ["handle", "type", "length", "level", "state", "description"],
            "dependentSchemas": {
                "attributes": {
                    "not": {
                        "anyOf": [
                            { "required": ["data"] },
                            { "required": ["strings"] }
                        ]
                    }
                },
                "properties": { "required": ["attributes"] },
                "overlays": { "required": ["attributes"] },
                "strings": { "required": ["data"] }
            },
            "additionalProperties": false
        },

        "attributes": {
            "type": "object",
            "additionalProperties": { "$ref": "#/$defs/attributeValue" }
        },

        "attributeValue": {
            "description": "Value of an attribute: a scalar, null if the value is not specified, \"unknown\" if the data says that it is unknown, an object of flag codes and booleans for a set of flags, an object of attribute codes and values for a nested structure, or an array of values",
            "anyOf": [
                { "type": ["null", "boolean", "integer", "number", "string"] },
                { "$ref": "#/$defs/attributes" },
                {
                    "type": "array",
                    "items": { "$ref": "#/$defs/attributeValue" }
                }
            ]
        },

        "property": {
            "description": "String property",
            "type": "object",
            "properties": {
                "id": {
                    "description": "Property identifier",
                    "type": "integer",
                    "minimum": 0,
                    "maximum": 65535
                },
                "code": {
                    "description": "Code of the property, or null if the identifier is not known",
                    "type": ["string", "null"]
                },
                "value": {
                    "description": "Value of the property, or null if not specified",
                    "type": ["string", "null"]
                }
            },
            "required": ["id", "code", "value"],
            "additionalProperties": false
        },

        "overlay": {
            "description": "Additional information entry applied to the structure",
            "type": "object",
            "properties": {
                "source": {
                    "description": "Handle of the type 40 structure holding the entry",
                    "$ref": "#/$defs/handle"
                },
                "index": {
                    "description": "Index of the entry within its structure",
                    "type": "integer",
                    "minimum": 0
                },
                "offset": {
                    "description": "Offset of the field the entry refers to",
                    "type": "integer",
                    "minimum": 0,
                    "maximum": 255
                },
                "value": {
                    "description": "Value of the entry, as hexadecimal digits",
                    "type": "string"
                },
                "string": {
                    "description": "String of the entry, or null if it has none",
                    "type": ["string", "null"]
                }
            },
            "required": ["source", "index", "offset", "value", "string"],
            "additionalProperties": false
        },

        "handle": {
            "description": "Structure handle",
            "type": "integer",
            "minimum": 0,
            "maximum": 65535
        },

        "version": {
            "description": "Version number",
            "type": "string",
            "pattern": "^[0-9]+\\.[0-9]+(\\.[0-9]+)?$"
        }
    }
}