class PackageData():
    """ Tool to insert necessary data in database
    """

    def __init__(self, json_path):
        """ Init tool
            @param plugin_name : plugin name
        """

        self._db = DbHelper()
        try:
            self.pkg = PackageJson(path = json_path).json
        except:
            print(str(traceback.format_exc()))
            return
        print("Json file OK")

        # check type == plugin
        if self.pkg["identity"]["type"] not in ["plugin", "external"]:
            print("Error : this package type is not recognized")
            exit()

    def insert(self):
        """ Insert data for plugin
        """
        ### Technology
        print("Technology %s" % self.pkg["technology"]["id"])
        if self._db.get_device_technology_by_id(self.pkg["technology"]["id"]) == None:
            # add if not exists
            print("add...")
            self._db.add_device_technology(self.pkg["technology"]["id"],
                                           self.pkg["technology"]["name"],
                                           self.pkg["technology"]["description"])
        else:
            # update if exists
            print("update...")
            self._db.update_device_technology(self.pkg["technology"]["id"],
                                           self.pkg["technology"]["name"],
                                           self.pkg["technology"]["description"])
 
        ### Device types
        for device_type in self.pkg["device_types"]:
            print("Device type %s" % device_type["id"])
            if self._db.get_device_type_by_id(device_type["id"]) == None:
                # add if not exists
                print("add...")
                self._db.add_device_type(device_type["id"],
                                         device_type["name"],
                                         self.pkg["technology"]["id"],
                                         device_type["description"])
            else:
                # update if exists
                print("update...")
                self._db.update_device_type(device_type["id"],
                                         device_type["name"],
                                         self.pkg["technology"]["id"],
                                         device_type["description"])
 
        ### Device feature model
        for device_feature_model in self.pkg["device_feature_models"]:
            print("Device feature model %s" % device_feature_model["id"])
            print("M.P=%s" % device_feature_model["parameters"])
            if self._db.get_device_feature_model_by_id(device_feature_model["id"]) == None:
                # add if not exists
                print("add...")
                if device_feature_model["feature_type"] == "sensor":
                    self._db.add_sensor_feature_model(device_feature_model["id"],
                                                      device_feature_model["name"],
                                                      device_feature_model["device_type_id"],
                                                      device_feature_model["value_type"],
                                                      device_feature_model["parameters"],
                                                      device_feature_model["stat_key"])
                elif device_feature_model["feature_type"] == "actuator":
                    self._db.add_actuator_feature_model(device_feature_model["id"],
                                                        device_feature_model["name"],
                                                        device_feature_model["device_type_id"],
                                                        device_feature_model["value_type"],
                                                        device_feature_model["return_confirmation"],
                                                        device_feature_model["parameters"],
                                                        device_feature_model["stat_key"])
            else:
                # update if exists
                print("update...")
                if device_feature_model["feature_type"] == "sensor":
                    self._db.update_sensor_feature_model(device_feature_model["id"],
                                                      device_feature_model["name"],
                                                      device_feature_model["parameters"],
                                                      device_feature_model["value_type"],
                                                      device_feature_model["stat_key"])
                elif device_feature_model["feature_type"] == "actuator":
                    self._db.update_actuator_feature_model(device_feature_model["id"],
                                                        device_feature_model["name"],
                                                        device_feature_model["parameters"],
                                                        device_feature_model["value_type"],
                                                        device_feature_model["return_confirmation"],
                                                        device_feature_model["stat_key"])