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// Copyright 2021 Esri
//
// 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.
import UIKit
import ArcGIS
class CreateLoadReportViewController: UIViewController {
// MARK: Storyboard views
/// The table view to display the load reports.
@IBOutlet var tableView: UITableView!
/// The button to reset the phase summaries.
@IBOutlet var resetBarButtonItem: UIBarButtonItem!
/// The button to run the trace and create a load report.
@IBOutlet var runBarButtonItem: UIBarButtonItem!
// MARK: Properties
/// A feature service of an electric utility network in Naperville, Illinois.
let utilityNetwork = AGSUtilityNetwork(url: URL(string: "https://sampleserver7.arcgisonline.com/server/rest/services/UtilityNetwork/NapervilleElectric/FeatureServer")!)
/// The initial conditional expression.
var initialExpression: AGSUtilityTraceConditionalExpression!
/// The trace parameters for creating load reports.
var traceParameters: AGSUtilityTraceParameters!
/// The network attributes for the comparison.
var phasesNetworkAttribute: AGSUtilityNetworkAttribute!
/// A list of possible phases populated from the network's attributes.
/// By default, they are not included in the load report.
var excludedPhases = [AGSCodedValue]()
/// A list of phases that are included in the load report.
var includedPhases = [AGSCodedValue]()
/// The phase summaries in the load report.
var summaries = [AGSCodedValue: PhaseSummary]()
/// The number formatter for phase summaries.
let numberFormatter: NumberFormatter = {
let formatter = NumberFormatter()
formatter.numberStyle = .decimal
formatter.usesGroupingSeparator = true
return formatter
}()
/// A struct for the phase summary, which contains the total customers
/// and total load for the phase.
struct PhaseSummary {
let totalCustomers: Int
let totalLoad: Int
}
// MARK: Methods
/// Load the utility network.
func loadUtilityNetwork() {
UIApplication.shared.showProgressHUD(message: "Loading utility network…")
// NOTE: Never hardcode login information in a production application.
// This is done solely for the sake of the sample.
utilityNetwork.credential = AGSCredential(user: "viewer01", password: "I68VGU^nMurF")
utilityNetwork.load { [weak self] error in
UIApplication.shared.hideProgressHUD()
guard let self = self else { return }
guard error == nil else {
self.presentAlert(error: error!)
return
}
// Create a default starting location.
guard let startingLocation = self.makeStartingLocation() else {
self.presentAlert(message: "Fail to create starting location.")
return
}
// Get the base condition and trace configuration from a default tier.
guard let utilityTierConfiguration = self.getTraceConfiguration() else {
self.presentAlert(message: "Fail to get trace configuration.")
return
}
// Proceed if the utility network loaded without issue.
self.utilityNetworkDidLoad(startingLocation: startingLocation, traceConfiguration: utilityTierConfiguration)
}
}
/// Called in response to the utility network load operation completing.
/// - Parameters:
/// - startingLocation: The utility element to start the trace from.
/// - traceConfiguration: The utility tier's trace configuration.
func utilityNetworkDidLoad(startingLocation: AGSUtilityElement, traceConfiguration: AGSUtilityTraceConfiguration) {
// Set the default expression.
initialExpression = traceConfiguration.traversability?.barriers as? AGSUtilityTraceConditionalExpression
// Create downstream trace parameters with elements and function outputs.
let traceParameters = AGSUtilityTraceParameters(traceType: .downstream, startingLocations: [startingLocation])
traceParameters.resultTypes = [.ags_value(with: .elements), .ags_value(with: .functionOutputs)]
// The service category for counting total customers.
if let serviceCategory = utilityNetwork.definition.categories.first(where: { $0.name == "ServicePoint" }),
// The load attribute for counting total load.
let loadAttribute = utilityNetwork.definition.networkAttributes.first(where: { $0.name == "Service Load" }),
// The phase attribute for getting total phase current load.
let phasesNetworkAttribute = utilityNetwork.definition.networkAttributes.first(where: { $0.name == "Phases Current" }) {
self.phasesNetworkAttribute = phasesNetworkAttribute
// Get possible coded phase values from the attributes.
if let domain = phasesNetworkAttribute.domain as? AGSCodedValueDomain {
excludedPhases = domain.codedValues.sorted { $0.name < $1.name }
DispatchQueue.main.async { [weak self] in
guard let self = self else { return }
self.tableView.reloadSection(.excluded)
self.tableView.isEditing = true
}
}
// Create a comparison to check the existence of service points.
let serviceCategoryComparison = AGSUtilityCategoryComparison(category: serviceCategory, comparisonOperator: .exists)
let addLoadAttributeFunction = AGSUtilityTraceFunction(functionType: .add, networkAttribute: loadAttribute, condition: serviceCategoryComparison)
// Create function input and output condition.
traceConfiguration.functions = [addLoadAttributeFunction]
traceConfiguration.outputCondition = serviceCategoryComparison
// Set to false to ensure that service points with incorrect phasing
// (which therefore act as barriers) are not counted with results.
traceConfiguration.includeBarriers = false
// Assign the trace configuration to trace parameters.
traceParameters.traceConfiguration = traceConfiguration
self.traceParameters = traceParameters
}
}
/// When the utility network is loaded, create an `AGSUtilityElement`
/// from the asset type to use as the starting location for the trace.
func makeStartingLocation() -> AGSUtilityElement? {
// Constants for creating the default starting location.
let deviceTableName = "Electric Distribution Device"
let assetGroupName = "Circuit Breaker"
let assetTypeName = "Three Phase"
let terminalName = "Load"
let globalID = UUID(uuidString: "1CAF7740-0BF4-4113-8DB2-654E18800028")!
// Create a default starting location.
if let networkSource = utilityNetwork.definition.networkSource(withName: deviceTableName),
let assetType = networkSource.assetGroup(withName: assetGroupName)?.assetType(withName: assetTypeName),
let startingLocation = utilityNetwork.createElement(with: assetType, globalID: globalID) {
// Set the terminal for the location. (For our case, use the "Load" terminal.)
startingLocation.terminal = assetType.terminalConfiguration?.terminals.first(where: { $0.name == terminalName })
return startingLocation
} else {
return nil
}
}
/// Get the utility tier's trace configuration.
func getTraceConfiguration() -> AGSUtilityTraceConfiguration? {
// Get a default trace configuration from a tier in the network.
utilityNetwork
.definition
.domainNetwork(withDomainNetworkName: "ElectricDistribution")?
.tier(withName: "Medium Voltage Radial")?
.makeDefaultTraceConfiguration()
}
// MARK: Actions
@IBAction func resetBarButtonItemTapped(_ sender: UIBarButtonItem) {
summaries.removeAll()
tableView.reloadSection(.included)
resetBarButtonItem.isEnabled = false
}
@IBAction func runBarButtonItemTapped(_ sender: UIBarButtonItem) {
UIApplication.shared.showProgressHUD(message: "Creating load report…")
let traceGroup = DispatchGroup()
var summaries = [AGSCodedValue: PhaseSummary]()
for phase in includedPhases {
guard let phaseCode = phase.code else { continue }
// Create a conditional expression.
let phasesAttributeComparison = AGSUtilityNetworkAttributeComparison(networkAttribute: phasesNetworkAttribute, comparisonOperator: .doesNotIncludeAny, value: phaseCode)!
// Chain it with the base condition using an OR operator.
traceParameters.traceConfiguration?.traversability?.barriers = AGSUtilityTraceOrCondition(leftExpression: initialExpression, rightExpression: phasesAttributeComparison)
traceGroup.enter()
utilityNetwork.trace(with: traceParameters) { results, _ in
defer { traceGroup.leave() }
// If the trace gives not result, return and ignore any error.
guard let results = results else { return }
var totalCustomers = 0
var totalLoad = 0
results.forEach { result in
switch result {
case let elementResult as AGSUtilityElementTraceResult:
// Get the unique customers count.
totalCustomers = Set(elementResult.elements.map(\.objectID)).count
case let functionResult as AGSUtilityFunctionTraceResult:
// Get the total load with a function output.
totalLoad = functionResult.functionOutputs.first?.result as? Int ?? 0
default:
break
}
}
summaries[phase] = PhaseSummary(totalCustomers: totalCustomers, totalLoad: totalLoad)
}
}
// Reload the load report table when trace completes.
traceGroup.notify(queue: .main) { [weak self] in
UIApplication.shared.hideProgressHUD()
guard let self = self else { return }
self.summaries = summaries
self.tableView.reloadSection(.included)
self.resetBarButtonItem.isEnabled = true
}
}
// MARK: UIViewController
override func viewDidLoad() {
super.viewDidLoad()
// Add the source code button item to the right of navigation bar.
(navigationItem.rightBarButtonItem as? SourceCodeBarButtonItem)?.filenames = ["CreateLoadReportViewController"]
// Load the utility network and initialize properties.
loadUtilityNetwork()
}
}
// MARK: - UITableViewDelegate
extension CreateLoadReportViewController: UITableViewDelegate, UITableViewDataSource {
func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
Section.allCases[section].titleForHeader
}
func numberOfSections(in tableView: UITableView) -> Int {
Section.allCases.count
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
switch Section.allCases[section] {
case .included:
return includedPhases.count
case .excluded:
return excludedPhases.count
}
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: Section.allCases[indexPath.section].cellIdentifier, for: indexPath)
switch Section.allCases[indexPath.section] {
case .included:
let phase = includedPhases[indexPath.row]
cell.textLabel?.text = String(format: "Phase: %@", phase.name)
if let summary = summaries[phase] {
let formattedString = String(format: "C: %@ L: %@", numberFormatter.string(from: summary.totalCustomers as NSNumber)!, numberFormatter.string(from: summary.totalLoad as NSNumber)!)
cell.detailTextLabel?.text = formattedString
} else {
cell.detailTextLabel?.text = "N/A"
}
case .excluded:
cell.textLabel?.text = excludedPhases[indexPath.row].name
}
return cell
}
func tableView(_ tableView: UITableView, editingStyleForRowAt indexPath: IndexPath) -> UITableViewCell.EditingStyle {
switch Section.allCases[indexPath.section] {
case .included:
return .delete
case .excluded:
return .insert
}
}
func tableView(_ tableView: UITableView, commit editingStyle: UITableViewCell.EditingStyle, forRowAt indexPath: IndexPath) {
/// Binary search to find the insertion index in a sorted array.
func index(forInserting phase: AGSCodedValue, into array: [AGSCodedValue]) -> Int {
(array as NSArray).index(
of: phase,
inSortedRange: NSRange(array.indices),
options: [.insertionIndex],
usingComparator: { ($0 as! AGSCodedValue).name.compare(($1 as! AGSCodedValue).name) }
)
}
switch editingStyle {
case .delete:
let phase = includedPhases[indexPath.row]
includedPhases.remove(at: indexPath.row)
let insertionIndex = index(forInserting: phase, into: excludedPhases)
excludedPhases.insert(phase, at: insertionIndex)
// Remove the summary.
summaries.removeValue(forKey: phase)
// Update the table.
tableView.performBatchUpdates {
tableView.deleteRows(at: [indexPath], with: .automatic)
tableView.insertRows(at: [IndexPath(row: insertionIndex, section: .excluded)], with: .automatic)
}
case .insert:
let phase = excludedPhases[indexPath.row]
excludedPhases.remove(at: indexPath.row)
let insertionIndex = index(forInserting: phase, into: includedPhases)
includedPhases.insert(phase, at: insertionIndex)
tableView.performBatchUpdates {
tableView.deleteRows(at: [indexPath], with: .automatic)
tableView.insertRows(at: [IndexPath(row: insertionIndex, section: .included)], with: .automatic)
}
default:
return
}
// Toggle button state.
runBarButtonItem.isEnabled = !includedPhases.isEmpty
resetBarButtonItem.isEnabled = !summaries.isEmpty
}
func tableView(_ tableView: UITableView, canEditRowAt indexPath: IndexPath) -> Bool {
true
}
}
// MARK: Section Enum
extension CreateLoadReportViewController {
/// A convenience type for the table view sections.
enum Section: Int, CaseIterable {
case included, excluded
var titleForHeader: String {
switch self {
case .included:
return "Phases, Total Customers(C), Total Load(L)"
case .excluded:
return "More Phases"
}
}
var cellIdentifier: String {
switch self {
case .included:
return "RightDetail"
case .excluded:
return "Basic"
}
}
}
}
private extension UITableView {
func reloadSection(_ section: CreateLoadReportViewController.Section) {
reloadSections([section.rawValue], with: .automatic)
}
}
private extension IndexPath {
init(row: Int, section: CreateLoadReportViewController.Section) {
self.init(row: row, section: section.rawValue)
}
}