{
    "$schema": "http://json-schema.org/draft-04/schema#",
    "type": "object",
    "properties": {
        "items": {
            "type": "array",
            "items": {
                "title": "Device",
                "description": "Schema for a single Device",
                "type": "object",
                "properties": {
                    "id": {
                        "type": "string",
                        "pattern": "^[A-Fa-f\\d]{24}$"
                    },
                    "deviceId": {
                        "type": "string",
                        "pattern": "^[A-Fa-f\\d]{24}$"
                    },
                    "applicationId": {
                        "type": "string",
                        "pattern": "^[A-Fa-f\\d]{24}$"
                    },
                    "creationDate": {
                        "type": "string",
                        "format": "date-time"
                    },
                    "lastUpdated": {
                        "type": "string",
                        "format": "date-time"
                    },
                    "name": {
                        "type": "string",
                        "minLength": 1,
                        "maxLength": 255
                    },
                    "description": {
                        "type": "string",
                        "maxLength": 32767
                    },
                    "tags": {
                        "type": "array",
                        "items": {
                            "type": "object",
                            "properties": {
                                "key": {
                                    "type": "string",
                                    "pattern": "^[0-9a-zA-Z_-]{1,255}$"
                                },
                                "value": {
                                    "type": "string",
                                    "minLength": 1,
                                    "maxLength": 255
                                }
                            },
                            "required": [
                                "key",
                                "value"
                            ],
                            "additionalProperties": false
                        },
                        "maxItems": 100
                    },
                    "attributes": {
                        "type": "array",
                        "items": {
                            "type": "object",
                            "properties": {
                                "name": {
                                    "type": "string",
                                    "pattern": "^[0-9a-zA-Z_-]{1,255}$"
                                },
                                "dataType": {
                                    "type": "string",
                                    "enum": [
                                        "string",
                                        "number",
                                        "gps",
                                        "boolean",
                                        "blob"
                                    ]
                                },
                                "contentType": {
                                    "type": "string",
                                    "maxLength": 64
                                },
                                "description": {
                                    "type": "string",
                                    "maxLength": 32767
                                },
                                "attributeTags": {
                                    "type": "object",
                                    "patternProperties": {
                                        "^[0-9a-zA-Z_-]{1,255}$": {
                                            "type": "string",
                                            "minLength": 1,
                                            "maxLength": 255
                                        }
                                    },
                                    "additionalProperties": false
                                },
                                "system": {
                                    "type": "object",
                                    "properties": {
                                        "aggregation": {
                                            "type": "string",
                                            "enum": [
                                                "FIRST",
                                                "LAST",
                                                "COUNT",
                                                "MAX",
                                                "MIN",
                                                "MEDIAN",
                                                "MEAN",
                                                "SUM",
                                                "STD_DEV"
                                            ]
                                        },
                                        "aggregationOptions": {
                                            "type": "array",
                                            "items": {
                                                "type": "object",
                                                "additionalProperties": false
                                            },
                                            "additionalProperties": false,
                                            "maxItems": 0
                                        },
                                        "childAttributes": {
                                            "type": "array",
                                            "items": {
                                                "type": "object",
                                                "properties": {
                                                    "name": {
                                                        "type": "string",
                                                        "pattern": "^[0-9a-zA-Z_-]{1,255}$"
                                                    },
                                                    "mode": {
                                                        "type": "string",
                                                        "enum": [
                                                            "all",
                                                            "whitelist",
                                                            "blacklist"
                                                        ]
                                                    },
                                                    "deviceIds": {
                                                        "type": "array",
                                                        "items": {
                                                            "type": "string",
                                                            "pattern": "^[A-Fa-f\\d]{24}$"
                                                        },
                                                        "maxItems": 1000
                                                    },
                                                    "deviceTags": {
                                                        "type": "array",
                                                        "items": {
                                                            "type": "object",
                                                            "properties": {
                                                                "key": {
                                                                    "type": "string",
                                                                    "pattern": "^[0-9a-zA-Z_-]{1,255}$"
                                                                },
                                                                "value": {
                                                                    "type": "string",
                                                                    "minLength": 1,
                                                                    "maxLength": 255
                                                                }
                                                            },
                                                            "additionalProperties": false
                                                        },
                                                        "maxItems": 100
                                                    }
                                                },
                                                "required": [
                                                    "name",
                                                    "mode"
                                                ],
                                                "additionalProperties": false
                                            },
                                            "maxItems": 256
                                        }
                                    },
                                    "additionalProperties": false
                                }
                            },
                            "required": [
                                "name",
                                "dataType"
                            ],
                            "additionalProperties": false
                        },
                        "maxItems": 256
                    },
                    "deviceClass": {
                        "type": "string",
                        "enum": [
                            "standalone",
                            "gateway",
                            "peripheral",
                            "floating",
                            "edgeCompute",
                            "system"
                        ]
                    },
                    "gatewayId": {
                        "type": "string",
                        "pattern": "^[A-Fa-f\\d]{24}$"
                    },
                    "edgeAgentVersion": {
                        "type": "string",
                        "pattern": "^(0|([1-9]\\d*))\\.(0|([1-9]\\d*))\\.(0|([1-9]\\d*))$"
                    },
                    "connectionInfo": {
                        "type": "object",
                        "properties": {
                            "time": {
                                "type": "string",
                                "format": "date-time"
                            },
                            "connected": {
                                "enum": [
                                    1,
                                    0,
                                    null
                                ]
                            }
                        }
                    },
                    "parentId": {
                        "oneOf": [
                            {
                                "type": "string",
                                "pattern": "^[A-Fa-f\\d]{24}$"
                            },
                            {
                                "type": "null"
                            }
                        ]
                    },
                    "systemInterval": {
                        "type": "integer",
                        "minimum": 5,
                        "maximum": 3600
                    },
                    "keepDuplicates": {
                        "type": "boolean"
                    }
                }
            }
        },
        "count": {
            "type": "integer"
        },
        "totalCount": {
            "type": "integer"
        },
        "perPage": {
            "type": "integer"
        },
        "page": {
            "type": "integer"
        },
        "filter": {
            "type": "string"
        },
        "filterField": {
            "type": "string"
        },
        "sortField": {
            "type": "string"
        },
        "sortDirection": {
            "type": "string",
            "enum": [
                "asc",
                "desc",
                "ASC",
                "DESC",
                ""
            ]
        },
        "applicationId": {
            "type": "string",
            "pattern": "^[A-Fa-f\\d]{24}$"
        },
        "deviceClass": {
            "type": "string",
            "enum": [
                "standalone",
                "gateway",
                "peripheral",
                "floating",
                "edgeCompute",
                "system"
            ]
        },
        "tagFilter": {
            "title": "Device Tag Filter",
            "description": "Array of Tags for filtering devices. Tag keys and tag values are optional.",
            "type": "array",
            "items": {
                "type": "object",
                "properties": {
                    "key": {
                        "type": "string",
                        "pattern": "^[0-9a-zA-Z_-]{1,255}$"
                    },
                    "value": {
                        "type": "string",
                        "minLength": 1,
                        "maxLength": 255
                    }
                },
                "additionalProperties": false
            },
            "maxItems": 100
        },
        "parentId": {
            "oneOf": [
                {
                    "type": "string",
                    "pattern": "^[A-Fa-f\\d]{24}$"
                },
                {
                    "type": "null"
                }
            ]
        },
        "query": {
            "type": "object"
        }
    }
}