{
    "$schema": "http://json-schema.org/draft-06/schema#",
    "title": "Validation Report",
    "type": "object",
    "description": "Output of glTF-Validator",
    "definitions": {
        "nonNegativeInteger": {
            "type": "integer",
            "minimum": 0
        },
        "positiveInteger": {
            "type": "integer",
            "exclusiveMinimum": 0
        }
    },
    "properties": {
        "uri": {
            "type": "string",
            "format": "uri-reference",
            "description": "URI of validated asset."
        },
        "mimeType": {
            "description": "MIME type of validated asset. Undefined when file format is not recognized.",
            "oneOf": [
                {
                    "const": "model/gltf+json",
                    "description": "glTF asset in plain text form."
                },
                {
                    "const": "model/gltf-binary",
                    "description": "glTF asset in GLB container."
                }
            ]
        },
        "validatorVersion": {
            "type": "string",
            "description": "Version string of glTF-Validator. Must follow semver syntax."
        },
        "validatedAt": {
            "description": "UTC timestamp of validation time.",
            "type": "string",
            "format": "date-time"
        },
        "issues": {
            "type": "object",
            "properties": {
                "numErrors": {
                    "$ref": "#/definitions/nonNegativeInteger"
                },
                "numWarnings": {
                    "$ref": "#/definitions/nonNegativeInteger"
                },
                "numInfos": {
                    "$ref": "#/definitions/nonNegativeInteger"
                },
                "numHints": {
                    "$ref": "#/definitions/nonNegativeInteger"
                },
                "messages": {
                    "type": "array",
                    "items": {
                        "properties": {
                            "code": {
                                "type": "string"
                            },
                            "severity": {
                                "oneOf": [
                                    {
                                        "const": 0,
                                        "description": "Error"
                                    },
                                    {
                                        "const": 1,
                                        "description": "Warning"
                                    },
                                    {
                                        "const": 2,
                                        "description": "Information"
                                    },
                                    {
                                        "const": 3,
                                        "description": "Hint"
                                    }
                                ]
                            },
                            "pointer": {
                                "description": "JSON Pointer to the object causing the issue.",
                                "type": "string",
                                "format": "json-pointer"
                            },
                            "offset": {
                                "description": "Byte offset in GLB file. Applicable only to GLB issues.",
                                "$ref": "#/definitions/nonNegativeInteger"
                            },
                            "message": {
                                "type": "string"
                            }
                        },
                        "required": [
                            "code",
                            "severity",
                            "message"
                        ],
                        "oneOf": [
                            {
                                "required": [
                                    "pointer"
                                ]
                            },
                            {
                                "required": [
                                    "offset"
                                ]
                            }
                        ]
                    }
                },
                "truncated": {
                    "type": "boolean",
                    "description": "Indicates that validation output is incomplete due to too many messages."
                }
            },
            "required": [
                "numErrors",
                "numWarnings",
                "numInfos",
                "numHints",
                "messages",
                "truncated"
            ]
        },
        "info": {
            "type": "object",
            "description": "An object containing various metrics about the validated asset. May be undefined for invalid inputs.",
            "properties": {
                "version": {
                    "type": "string",
                    "description": "The glTF version that this asset targets.",
                    "pattern": "^[0-9]+\\.[0-9]+$"
                },
                "minVersion": {
                    "type": "string",
                    "description": "The minimum glTF version that this asset targets.",
                    "pattern": "^[0-9]+\\.[0-9]+$"
                },
                "generator": {
                    "type": "string",
                    "description": "Tool that generated this glTF model."
                },
                "extensionsUsed": {
                    "type": "array",
                    "description": "Names of glTF extensions used somewhere in this asset.",
                    "items": {
                        "type": "string"
                    },
                    "uniqueItems": true,
                    "minItems": 1
                },
                "extensionsRequired": {
                    "type": "array",
                    "description": "Names of glTF extensions required to properly load this asset.",
                    "items": {
                        "type": "string"
                    },
                    "uniqueItems": true,
                    "minItems": 1
                },
                "resources": {
                    "type": "array",
                    "items": {
                        "type": "object",
                        "properties": {
                            "pointer": {
                                "type": "string",
                                "format": "json-pointer"
                            },
                            "storage": {
                                "oneOf": [
                                    {
                                        "const": "data-uri",
                                        "description": "Resource is stored as Data-URI."
                                    },
                                    {
                                        "const": "buffer-view",
                                        "description": "Resource is stored within glTF buffer and accessed via bufferView."
                                    },
                                    {
                                        "const": "glb",
                                        "description": "Resource is stored in binary chunk of GLB container."
                                    },
                                    {
                                        "const": "external",
                                        "description": "Resource is stored externally."
                                    }
                                ]
                            },
                            "mimeType": {
                                "type": "string"
                            },
                            "byteLength": {
                                "$ref": "#/definitions/positiveInteger",
                                "description": "Byte length of the resource. Undefined when the resource wasn't available."
                            },
                            "uri": {
                                "type": "string",
                                "format": "uri-reference",
                                "description": "URI. Defined only for external resources."
                            },
                            "image": {
                                "type": "object",
                                "description": "Image-specific metadata.",
                                "properties": {
                                    "width": {
                                        "$ref": "#/definitions/positiveInteger"
                                    },
                                    "height": {
                                        "$ref": "#/definitions/positiveInteger"
                                    },
                                    "format": {
                                        "enum": [
                                            "rgb",
                                            "rgba",
                                            "luminance",
                                            "luminance-alpha"
                                        ]
                                    },
                                    "primaries": {
                                        "enum": [
                                            "srgb",
                                            "custom"
                                        ]
                                    },
                                    "transfer": {
                                        "enum": [
                                            "linear",
                                            "srgb",
                                            "custom"
                                        ]
                                    },
                                    "bits": {
                                        "$ref": "#/definitions/positiveInteger"
                                    }
                                },
                                "required": [
                                    "width",
                                    "height"
                                ]
                            }
                        }
                    },
                    "required": [
                        "pointer"
                    ],
                    "minItems": 1
                }
            },
            "required": [
                "version"
            ]
        }
    },
    "required": [
        "validatorVersion",
        "issues"
    ]
}