//
// Copyright 2019 AT&T Intellectual Property
// Copyright 2019 Nokia
// Copyright 2023 Capgemini
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

//  This source code is part of the near-RT RIC (RAN Intelligent Controller)
//  platform project (RICP).

package common

import (
	"fmt"
)

//SDL namespace used by the RNIB
const rnibNamespace = "e2Manager"

/*
ValidateAndBuildCellIdKey builds key according to the specified format returns the resulting string
*/
func ValidateAndBuildCellIdKey(cellId string) (string, error) {
	if cellId == "" {
		return "", NewValidationError("#utils.ValidateAndBuildCellIdKey - an empty cell id received")
	}
	return fmt.Sprintf("CELL:%s", cellId), nil
}

/*
ValidateAndBuildNrCellIdKey builds key according to the specified format returns the resulting string
*/
func ValidateAndBuildNrCellIdKey(cellId string) (string, error) {
	if cellId == "" {
		return "", NewValidationError("#utils.ValidateAndBuildNrCellIdKey - an empty cell id received")
	}
	return fmt.Sprintf("NRCELL:%s", cellId), nil
}

/*
ValidateAndBuildNodeBNameKey builds key according to the specified format returns the resulting string
*/
func ValidateAndBuildNodeBNameKey(inventoryName string) (string, error) {
	if inventoryName == "" {
		return "", NewValidationError("#utils.ValidateAndBuildNodeBNameKey - an empty inventory name received")
	}
	return fmt.Sprintf("RAN:%s", inventoryName), nil
}

/*
ValidateAndBuildNodeBIdKey builds key according to the specified format returns the resulting string
*/
func ValidateAndBuildNodeBIdKey(nodeType string, plmnId string, nbId string, cuupId string, duId string) (string, error) {
	if nodeType == "" {
		return "", NewValidationError("#utils.ValidateAndBuildNodeBIdKey - an empty node type received")
	}
	if plmnId == "" {
		return "", NewValidationError("#utils.ValidateAndBuildNodeBIdKey - an empty plmnId received")
	}
	if nbId == "" {
		return "", NewValidationError("#utils.ValidateAndBuildNodeBIdKey - an empty nbId received")
	}
        /*Note: Deployment where CU-UP and DU are combined
	  (but do not include the CP-CP) and have a single E2 connection
	   is not supported. The combination of CU-CP, CU-UP, and DU will be
	   treated as a single gNB and expect it to have only the
	   global gNB ID in its E2 Setup ID*/

	if cuupId != "" && duId != ""{
		return fmt.Sprintf("%s:%s:%s", nodeType, plmnId, nbId), nil
	}else if cuupId != "" {
		return fmt.Sprintf("%s:%s:%s:%s", nodeType, plmnId, nbId, cuupId), nil
	}else if duId != "" {
		return fmt.Sprintf("%s:%s:%s:%s", nodeType, plmnId, nbId, duId ), nil
	}else {
	return fmt.Sprintf("%s:%s:%s", nodeType, plmnId, nbId), nil
}
}

/*
ValidateAndBuildCellNamePciKey builds key according to the specified format returns the resulting string
*/
func ValidateAndBuildCellNamePciKey(inventoryName string, pci uint32) (string, error) {
	if inventoryName == "" {
		return "", NewValidationError("#utils.ValidateAndBuildCellNamePciKey - an empty inventory name received")
	}
	return fmt.Sprintf("PCI:%s:%02x", inventoryName, pci), nil
}

func ValidateAndBuildRanLoadInformationKey(inventoryName string) (string, error) {

	if inventoryName == "" {
		return "", NewValidationError("#utils.ValidateAndBuildRanLoadInformationKey - an empty inventory name received")
	}

	return fmt.Sprintf("LOAD:%s", inventoryName), nil
}

func ValidateAndBuildE2TInstanceKey(address string) (string, error) {

	if address == "" {
		return "", NewValidationError("#utils.ValidateAndBuildE2TInstanceKey - an empty E2T address received")
	}

	return fmt.Sprintf("E2TInstance:%s", address), nil
}

func BuildGeneralConfigurationKey() string {
	return "GENERAL"
}

func MapE2TAddressesToKeys(addresses []string) []string {

	keys := []string{}
	for _, v := range addresses {
		if len(v) != 0 {
			keys = append(keys, fmt.Sprintf("E2TInstance:%s", v))
		}
	}

	return keys
}

//GetRNibNamespace returns namespace used by the RNIB in SDL.
func GetRNibNamespace() string {
	return rnibNamespace
}