{
  "$schema": "http://json-schema.org/schema#",
  "$schemaVersion": "0.0.1",
  "modelTags": "",
  "$id": "https://smart-data-models.github.io/dataModel.Transportation/AnprFlowObserved/schema.json",
  "title": "ANPR Flow Observed schema",
  "description": "The data model represents an observation linked to the passing of a vehicle at a certain location and at a given time. This Data Model is based on the [dataModel.Transportation/ItemFlowObserved], extended with ANPR specific properties and links to the observation images.",
  "type": "object",
  "allOf": [
    {
      "$ref": "https://smart-data-models.github.io/data-models/common-schema.json#/definitions/GSMA-Commons"
    },
    {
      "$ref": "https://smart-data-models.github.io/data-models/common-schema.json#/definitions/Location-Commons"
    },
    {
      "properties": {
        "type": {
          "description": "Property. NGSI Entity type. It has to be AnprFlowObserved",
          "type": "string",
          "enum": [
            "AnprFlowObserved"
          ]
        },
        "dateObserved": {
          "$ref": "https://smart-data-models.github.io/data-models/common-schema.json#/definitions/dateObserved"
        },
        "dateReceived": {
          "description": "Property. Timestamp when the observation has been received by the platform.",
          "type": "string",
          "format": "date-time"
        },
        "observedBy": {
          "anyOf": [
            {
              "type": "string",
              "minLength": 1,
              "maxLength": 256,
              "pattern": "^[\\w\\-\\.\\{\\}\\$\\+\\*\\[\\]`|~^@!,:\\\\]+$",
              "description": "Property. Identifier format of any NGSI entity"
            },
            {
              "type": "string",
              "format": "uri",
              "description": "Property. Identifier format of any NGSI entity"
            }
          ],
          "description": "Relationship. The entity or device which has reported this observation"
        },
        "laneId": {
          "description": "Property. Lane identifier. Lane identification provided by the observer.",
          "type": "string"
        },
        "zonesServed": {
          "description": "Array of zones that are able to receive or read the observations",
          "type": "array",
          "items": {
            "type": "string"
          }
        },
        "vehiclePlateNotRead": {
          "description": "Property. Indicates if a license could not be read",
          "type": "boolean"
        },
        "observedVehicle": {
          "description": "Property. Information about the observed vehicle.",
          "type": "object",
          "properties": {
            "direction": {
              "description": "Property. Detected direction of the observed vehicle.",
              "type": "string",
              "enum": [
                "away",
                "towards"
              ]
            },
            "speed": {
              "description": "Property. Detected speed of the observed vehicle.",
              "type": "number",
              "minimum": 0
            },
            "brand": {
              "description": "Property. Detected brand of the observed vehicle.",
              "type": "object",
              "properties": {
                "name": {
                  "description": "Property. Brand name identified",
                  "type": "string"
                },
                "confidence": {
                  "description": "Property. Confidence level of the detection",
                  "type": "number",
                  "minimum": 0,
                  "maximum": 1
                }
              }
            },
            "model": {
              "description": "Property. Detected brand model of the observed vehicle.",
              "type": "object",
              "properties": {
                "name": {
                  "description": "Property. Model name.",
                  "type": "string"
                },
                "confidence": {
                  "description": "Property. Confidence level of the detection.",
                  "type": "number",
                  "minimum": 0,
                  "maximum": 1
                }
              }
            },
            "color": {
              "description": "Property. Detected color of the observed vehicle.",
              "type": "object",
              "properties": {
                "name": {
                  "description": "Property. Color name.",
                  "type": "string"
                },
                "confidence": {
                  "description": "Property. Confidence level of the detection.",
                  "type": "number",
                  "minimum": 0,
                  "maximum": 1
                }
              }
            },
            "country": {
              "description": "Property. Detected country of the observed vehicle.",
              "type": "object",
              "properties": {
                "code": {
                  "description": "Property. Country code according to ISO 3166-1 alpha-2",
                  "type": "string"
                },
                "confidence": {
                  "description": "Property. Confidence level of the detection.",
                  "type": "number",
                  "minimum": 0,
                  "maximum": 1
                }
              }
            },
            "licensePlate": {
              "description": "Property. Detected license plate of the observed vehicle.",
              "type": "object",
              "properties": {
                "identifier": {
                  "description": "Property. License plate identifier",
                  "type": "string"
                },
                "confidence": {
                  "description": "Property. Confidence level of the detection.",
                  "type": "number",
                  "minimum": 0,
                  "maximum": 1
                },
                "coordinates": {
                  "description": "Property. Sequence of position points describing this location, expressed in coordinate system",
                  "$ref": "https://smart-data-models.github.io/data-models/common-schema.json#/definitions/Location-Commons/properties/location"
                }
              },
              "required": [
                "identifier"
              ]
            }
          }
        },
        "refImages": {
          "description": "Relationship. Array of multiple objects that refer to images.",
          "type": "array",
          "items": [
            {
              "type": "object",
              "properties": {
                "url": {
                  "description": "Property. URL referencing to the image",
                  "type": "string",
                  "format": "uri"
                },
                "contentType": {
                  "description": "Property. Content type according to IANA Media Types.",
                  "type": "string"
                },
                "imageType": {
                  "description": "Property. Type of image",
                  "type": "string",
                  "enum": [
                    "plate",
                    "overview",
                    "anpr"
                  ]
                }
              },
              "required": [
                "url",
                "contentType",
                "imageType"
              ]
            }
          ]
        }
      }
    }
  ],
  "required": [
    "id",
    "type",
    "location",
    "dateObserved"
  ]
}