{
    "format": "json",
    "$schema": "http://json-schema.org/draft-07/schema#",
    "$id": "http://example.com/root.json",
    "type": "object",
    "title": "Apple Charts schema",
    "required": [
        "position",
        "id",
        "name",
        "artists",
        "artist_name",
        "album_name",
        "timestamp",
        "report_date",
        "release_date",
        "country",
        "isrc",
        "artwork",
        "previews"
    ],
    "properties": {
        "previews": {
            "$id": "#/properties/previews",
            "type": "array",
            "items": {
                "$ref": "#/definitions/Preview"
            }
        },
        "position": {
            "$id": "#/properties/position",
            "type": "integer",
            "title": "Track position number in chart.",
            "examples": [
                "1", "10"
            ],
            "pattern": "^([\\d]+)$"
        },
        "name": {
            "$id": "#/properties/name",
            "type": "string",
            "title": "Track name.",
            "examples": [
                "We Will Rock You"
            ],
            "pattern": "^(.*)$"
        },
        "id": {
            "$id": "#/properties/id",
            "type": "string",
            "title": "Track ID value.",
            "examples": [
                "12343232"
            ],
            "pattern": "^(.*)$"
        },
        "isrc": {
            "$id": "#/properties/isrc",
            "type": "string",
            "title": "Track ISRC value.",
            "examples": [
                "USS1Z9900001"
            ],
            "pattern": "^(.*)$"
        },
        "artists": {
            "$id": "#/properties/artists",
            "type": "array",
            "title": "Artists array.",
            "items": {
                "$ref": "#/definitions/Artist"
            }
        },
        "genre_names": {
            "$id": "#/properties/genre_names",
            "type": "array",
            "items": {
                "type": "string"
            }
        },
        "artist_name": {
            "$id": "#/properties/artist_name",
            "type": "string",
            "pattern": "^(.*)$"
        },
        "album_name": {
            "$id": "#/properties/album_name",
            "type": "string",
            "pattern": "^(.*)$"
        },
        "has_lyrics": {
            "$id": "#/properties/has_lyrics",
            "type": "boolean"
        },
        "url": {
            "$id": "#/properties/url",
            "type": "string",
            "pattern": "^(.*)$"
        },
        "track_number": {
            "$id": "#/properties/track_number",
            "type": "integer"
        },
        "duration_in_millis": {
            "$id": "#/properties/duration_in_millis",
            "type": ["integer", "string"],
            "pattern": "^(\\d+|NA)$"
        },
        "disc_number": {
            "$id": "#/properties/disc_number",
            "type": "integer"
        },
        "artwork": {
            "$id": "#/properties/artwork",
            "type": "object",
            "additionalProperties": true,
            "required": [
                "width",
                "height",
                "url"
            ],
            "properties": {
                "width": {
                    "type": "integer"
                },
                "height": {
                    "type": "integer"
                },
                "url": {
                    "type": "string"
                }
            }
        },
        "timestamp": {
            "$id": "#/properties/timestamp",
            "type": "string",
            "title": "Timestamp.",
            "examples": [
                "2013-06-10T10:30:20"
            ],
            "pattern": "\\d{4}-\\d{2}-\\d{2}T\\d{2}:\\d{2}:\\d{2}"
        },
        "report_date": {
            "$id": "#/properties/report_date",
            "type": "string",
            "format": "date",
            "title": "Target date."
        },
        "country": {
            "$id": "#/properties/country",
            "type": "string",
            "title": "Country code.",
            "examples": [
                "JP",
                "AU",
                "global"
            ],
            "pattern": "^(.*)$"
        },
        "release_date": {
            "$id": "#/properties/release_date",
            "type": "string",
            "format": "date",
            "title": "Release date."
        },
        "play_params": {
            "$id": "#/properties/play_params",
            "type": "object",
            "properties": {
                "id": {
                    "type": "string"
                },
                "kind": {
                    "type": "string"
                }
            }
        }
    },
    "definitions": {
        "Artist": {
            "title": "Artist object",
            "type": "object",
            "additionalProperties": true,
            "properties": {
                "id": {
                    "type": "string",
                    "format": "integer"
                },
                "name": {
                    "type": "string"
                }
            },
            "required": [
                "id",
                "name"
            ]
        },
        "Preview": {
            "title": "Preview object",
            "type": "object",
            "additionalProperties": true,
            "properties": {
                "url": {
                    "type": "string"
                }
            }
        }
    }
}