{
    "$ref": "#/definitions/IDenebTemplateMetadata",
    "$schema": "http://json-schema.org/draft-07/schema#",
    "definitions": {
        "IDenebTemplateMetadata": {
            "description": "Main template definition.",
            "properties": {
                "dataset": {
                    "description": "Dataset columns or measures used by the template, that the end-user will need to supply for it to work.",
                    "items": {
                        "$ref": "#/definitions/ITemplateDatasetField"
                    },
                    "type": "array",
                    "uniqueItems": true
                },
                "deneb": {
                    "$ref": "#/definitions/IDenebUserMeta",
                    "description": "Deneb Information"
                },
                "information": {
                    "$ref": "#/definitions/ITemplateInformation",
                    "description": "High-level information or metadata about the template."
                },
                "interactivity": {
                    "$ref": "#/definitions/ITemplateInteractivityOptions",
                    "description": "Any interactivity settings that we want to explicitly set."
                }
            },
            "required": [
                "dataset",
                "deneb",
                "information"
            ],
            "type": "object"
        },
        "IDenebUserMeta": {
            "additionalProperties": false,
            "properties": {
                "build": {
                    "description": "Which version the visual was built with. Uses semantic versioning internally, but we don't want to enforce this when validating as it's for information only. Can be spoofed but might be handy at some point.",
                    "type": "string"
                },
                "metaVersion": {
                    "description": "Template metadata version. Will be capped to the version matching this definition.",
                    "maximum": 1,
                    "minimum": 1,
                    "type": "number"
                },
                "provider": {
                    "$ref": "#/definitions/TProvider",
                    "description": "Provider details for the template."
                },
                "providerVersion": {
                    "description": "Which version of the provider library was used to create the specification.",
                    "type": "string"
                }
            },
            "required": [
                "build",
                "metaVersion",
                "provider",
                "providerVersion"
            ],
            "type": "object"
        },
        "ITemplateDatasetField": {
            "description": "Definitions for individual fields within the dataset.",
            "properties": {
                "description": {
                    "description": "Optional assistive text to display to the end-user when adding fields to the template.",
                    "maxLength": 300,
                    "type": "string"
                },
                "key": {
                    "description": "Unique field placeholder name. Must start and end with __ (double-underscore) and can only use alpha-numeric characters in-between.",
                    "maxLength": 30,
                    "pattern": "^__[a-zA-Z0-9]+__$",
                    "type": "string"
                },
                "kind": {
                    "$ref": "#/definitions/TDatasetFieldKind",
                    "description": "Specifies whether a column or measure (or either) should be used for this placeholder."
                },
                "name": {
                    "maxLength": 30,
                    "type": "string"
                },
                "type": {
                    "$ref": "#/definitions/TDatasetFieldType",
                    "description": "The list of data types that can be used for this placeholder, for any columns or measures in the data model."
                }
            },
            "required": [
                "key",
                "kind",
                "name",
                "type"
            ],
            "type": "object"
        },
        "ITemplateInformation": {
            "additionalProperties": true,
            "properties": {
                "author": {
                    "description": "The author of the template, for follow-up... or kudos!",
                    "maxLength": 100,
                    "type": "string"
                },
                "description": {
                    "description": "More detailed (but still short!) description of the template's purpose.",
                    "maxLength": 300,
                    "type": "string"
                },
                "generated": {
                    "description": "Generation date and time of template.",
                    "format": "date-time",
                    "type": "string"
                },
                "name": {
                    "description": "Display name of template.",
                    "maxLength": 100,
                    "type": "string"
                },
                "previewImageBase64PNG": {
                    "description": "Base64-encoded image/png string, representing a preview image for the template in external tools.\nShould be a maximum of 150 x 150 pixels.",
                    "type": "string"
                },
                "supportUri": {
                    "description": "Valid URI for a descriptive reference, e.g. blog post/support site etc.",
                    "format": "uri",
                    "type": "string"
                },
                "uuid": {
                    "description": "Unique identifier of template.",
                    "pattern": "^[0-9a-f]{8}-[0-9a-f]{4}-4[0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$",
                    "type": "string"
                },
                "videoUri": {
                    "description": "Valid URI for a sample or instructional video.",
                    "format": "uri",
                    "type": "string"
                }
            },
            "required": [
                "author",
                "generated",
                "name",
                "uuid"
            ],
            "type": "object"
        },
        "ITemplateInteractivityOptions": {
            "additionalProperties": false,
            "description": "Interactivity properties for specification.",
            "properties": {
                "contextMenu": {
                    "description": "Enable context menu for data points.",
                    "type": "boolean"
                },
                "dataPointLimit": {
                    "description": "Maximum number of data points to allow when selecting.",
                    "maximum": 250,
                    "minimum": 1,
                    "type": "number"
                },
                "highlight": {
                    "description": "Enable highlighting of measure values from other visuals.",
                    "type": "boolean"
                },
                "selection": {
                    "description": "Enable cross-filtering from data point click events.",
                    "type": "boolean"
                },
                "tooltip": {
                    "description": "Enable tooltip handler.",
                    "type": "boolean"
                }
            },
            "required": [
                "contextMenu",
                "dataPointLimit",
                "selection",
                "tooltip"
            ],
            "type": "object"
        },
        "TDatasetFieldKind": {
            "enum": [
                "any",
                "column",
                "measure"
            ],
            "type": "string"
        },
        "TDatasetFieldType": {
            "enum": [
                "bool",
                "dateTime",
                "numeric",
                "other",
                "text"
            ],
            "type": "string"
        },
        "TProvider": {
            "enum": [
                "vega",
                "vegaLite"
            ],
            "type": "string"
        }
    }
}