EmployeeDirectory/Models/Employee.swift

@@ -27,7 +27,7 @@ public enum EmployeeType: String, Codable, CustomStringConvertible {
 /// Employee Object
 /// JSON Object defintion
 /// - https://square.github.io/microsite/mobile-interview-project/
-public struct Employee: Hashable, Codable {
+public struct Employee: Codable {
     
     /// The unique identifier for the employee. Represented as a UUID.
     public let uuid: UUID

EmployeeDirectory/Protocols/EmployeeServiceProtocol.swift

@@ -10,6 +10,7 @@
 public protocol EmployeeServiceProtocol {
     
     /// This will get a list of all employees
+    /// - Parameter serviceMode: Mode in which to hit.
     /// - Returns: An Employees struct
-    func getEmployees() async throws -> Employees
+    func getEmployees(_ serviceMode: EmployeeServiceMode) async throws -> Employees
 }

EmployeeDirectory/SceneDelegate.swift

@@ -25,13 +25,6 @@ class SceneDelegate: UIResponder, UIWindowSceneDelegate {
         let navigationController = UINavigationController(rootViewController: employeeListVC)
         window.rootViewController = navigationController
         
-        let appVersion = 1.5// get app version
-        let currentVersion = 1.0 //cached version
-        
-        if appVersion != currentVersion {
-            EmployeeCacheService.shared.clear()
-        }
-                
         // Set the window to the scene
         self.window = window
         window.makeKeyAndVisible()

EmployeeDirectory/Services/EmployeeCacheService.swift

@@ -1,44 +0,0 @@
-//
-//  EmployeeCacheService.swift
-//  EmployeeDirectory
-//
-//  Created by Matt Bruce on 2/6/25.
-//
-
-import Foundation
-import UIKit
-
-/// A service that handles image caching using memory, disk, and network in priority order.
-public class EmployeeCacheService {
-    // MARK: - Properties
-    public static let shared = EmployeeCacheService() // Default shared instance
-
-    /// Memory cache for storing images in RAM.
-    private let emplyoees: Employees? = nil
-    
-    /// File manager for handling disk operations.
-    private let fileManager = FileManager.default
-    
-    /// Directory where cached images are stored on disk.
-    private let cacheDirectory: URL = {
-        FileManager.default.urls(for: .cachesDirectory, in: .userDomainMask)[0]
-    }()
-    
-    // MARK: - Initializer
-    
-    public init() {}
-
-    public func save(from employees: Employees) throws {
-        let data = try JSONEncoder().encode(employees)
-        try data.write(to: cacheDirectory.appendingPathComponent("employees.json"))
-    }
-
-    public func load() throws -> Employees {
-        let data = try Data(contentsOf: cacheDirectory.appendingPathComponent("employees.json"))
-        return try JSONDecoder().decode(Employees.self, from: data)
-    }
-    
-    public func clear() {
-        try? FileManager.default.removeItem(at: cacheDirectory.appendingPathComponent("employees.json"))
-    }
-}

EmployeeDirectory/Services/EmployeeService.swift

@@ -7,22 +7,11 @@
 import Foundation
 
 /// These are the testing URL Endpoints for different states
-internal enum EmployeeServiceMode: String, CaseIterable {
+public enum EmployeeServiceMode: String, CaseIterable {
     case production
     case malformed
     case empty
     
-    public var service: EmployeeServiceProtocol {
-        switch self {
-        case .production:
-            return EmployeeService.shared
-        case .malformed:
-            return EmployeeMalformedService.shared
-        case .empty:
-            return EmployeeEmptyService.shared
-        }
-    }
-    
     /// Enpoint in which to grabe employees from.
     public var endpoint: String {
         switch self {
@@ -36,14 +25,8 @@ internal enum EmployeeServiceMode: String, CaseIterable {
     }
 }
 
-
 /// Service Layer for Employees
 public class EmployeeService: EmployeeServiceProtocol {
-    public enum EmployeeServiceError: Error {
-        case error
-        //case LoadError
-        //case other(Error)
-    }
     // MARK: - Properties
     public static let shared = EmployeeService() // Default shared instance
 
@@ -56,67 +39,7 @@ public class EmployeeService: EmployeeServiceProtocol {
     /// This will get a list of all employees
     /// - Parameter serviceMode: Mode in which to hit.
     /// - Returns: An Employees struct
-    public func getEmployees() async throws -> Employees {
+    public func getEmployees(_ serviceMode: EmployeeServiceMode = .production) async throws -> Employees {
-        var employees: Employees
+        return try await NetworkService.shared.fetchData(from: serviceMode.endpoint, as: Employees.self)
-        let cache = EmployeeCacheService.shared
-        do {
-            employees = try cache.load()
-            return employees
-        } catch {
-            if let networkFound = try? await fetchNetworkEmployees() {
-                employees = networkFound
-                return employees
-            }
-        }
-        throw EmployeeServiceError.error
-    }
-    
-    public func fetchNetworkEmployees() async throws -> Employees {
-        var employees: Employees
-        if let networkFound = try? await NetworkService.shared.fetchData(from: EmployeeServiceMode.production.endpoint, as: Employees.self) {
-            employees = networkFound
-            try? EmployeeCacheService.shared.save(from: employees)
-            return employees
-        } else {
-            throw EmployeeServiceError.error
-        }
-    }
-}
-
-/// Service Layer for Employees
-public class EmployeeMalformedService: EmployeeServiceProtocol {
-    // MARK: - Properties
-    public static let shared = EmployeeMalformedService() // Default shared instance
-
-    // MARK: - Initializer
-
-    public init() {}
-    
-    // MARK: - Public Methods
-
-    /// This will get a list of all employees
-    /// - Parameter serviceMode: Mode in which to hit.
-    /// - Returns: An Employees struct
-    public func getEmployees() async throws -> Employees {
-        return try await NetworkService.shared.fetchData(from: EmployeeServiceMode.malformed.endpoint, as: Employees.self)
-    }
-}
-
-/// Service Layer for Employees
-public class EmployeeEmptyService: EmployeeServiceProtocol {
-    // MARK: - Properties
-    public static let shared = EmployeeEmptyService() // Default shared instance
-
-    // MARK: - Initializer
-
-    public init() {}
-    
-    // MARK: - Public Methods
-
-    /// This will get a list of all employees
-    /// - Parameter serviceMode: Mode in which to hit.
-    /// - Returns: An Employees struct
-    public func getEmployees() async throws -> Employees {
-        return try await NetworkService.shared.fetchData(from: EmployeeServiceMode.empty.endpoint, as: Employees.self)
     }
 }

EmployeeDirectory/ViewControllers/EmployeeDetailViewController.swift

@@ -1,104 +0,0 @@
-//
-//  EmployeeDetailViewController.swift
-//  EmployeeDirectory
-//
-//  Created by Matt Bruce on 2/6/25.
-//
-import UIKit
-import Combine
-
-public class EmployeeDetailViewController: UIViewController {
-    
-    private let photoImageView = UIImageView()
-    private let nameLabel = UILabel()
-    private let emailLabel = UILabel()
-    private let teamLabel = UILabel()
-    private let employeeTypeLabel = UILabel()
-    private let phoneLabel = UILabel()
-    private let bioLabel = UILabel()
-    
-    private let stackView = UIStackView()
-    
-    /// Used for grabbing the photo
-    private var largerPhotoSubscriber: AnyCancellable?
-
-    public var viewModel: EmployeeDetailViewModel?
-    
-    public override func viewDidLoad() {
-        super.viewDidLoad()
-
-        view.backgroundColor = .white
-        
-        // Configure Photo
-        photoImageView.image = UIImage(systemName: "person.crop.circle")
-        photoImageView.contentMode = .scaleAspectFit
-        photoImageView.translatesAutoresizingMaskIntoConstraints = false
-
-        // Configure StackView
-        stackView.axis = .vertical
-        stackView.spacing = 10
-        stackView.alignment = .leading
-        stackView.distribution = .fill
-        stackView.translatesAutoresizingMaskIntoConstraints = false
-
-        // Configure Labels
-        bioLabel.numberOfLines = 0
-        
-        // Add views to stackView
-        stackView.addArrangedSubview(photoImageView)
-        stackView.addArrangedSubview(nameLabel)
-        stackView.addArrangedSubview(teamLabel)
-        stackView.addArrangedSubview(employeeTypeLabel)
-        stackView.addArrangedSubview(phoneLabel)
-        stackView.addArrangedSubview(emailLabel)
-        stackView.addArrangedSubview(bioLabel)
-
-        view.addSubview(stackView)
-        photoImageView.heightAnchor.constraint(equalToConstant: 200).isActive = true
-        photoImageView.widthAnchor.constraint(equalToConstant: 200).isActive = true
-        stackView.topAnchor.constraint(equalTo: view.safeAreaLayoutGuide.topAnchor).isActive = true
-        stackView.bottomAnchor.constraint(lessThanOrEqualTo: view.safeAreaLayoutGuide.bottomAnchor).isActive = true
-        stackView.leftAnchor.constraint(equalTo: view.leftAnchor, constant: 10).isActive = true
-        stackView.rightAnchor.constraint(equalTo: view.rightAnchor, constant: -10).isActive = true
-
-        // Bind the image to the photoImageView
-        largerPhotoSubscriber = viewModel?.$largePhoto
-            .compactMap { $0 }
-            .receive(on: DispatchQueue.main)
-            .sink { [weak self] image in
-                self?.photoImageView.image = image
-            }
-
-        if let viewModel {
-            // Bind data to UI components
-            nameLabel.text = viewModel.fullName
-            emailLabel.text = viewModel.emailAddress
-            teamLabel.text = viewModel.team
-            employeeTypeLabel.text = viewModel.employeeType
-            phoneLabel.text = viewModel.phoneNumber
-            bioLabel.text = viewModel.biography
-            
-            // Dynamically show or hide elements based on their content
-            phoneLabel.isHidden = viewModel.phoneNumber == nil
-            bioLabel.isHidden = viewModel.biography == nil
-        }
-        
-        let phoneTap = UITapGestureRecognizer(target: self, action: #selector(didTapPhoneView(_:)))
-        phoneLabel.isUserInteractionEnabled = true
-        phoneLabel.addGestureRecognizer(phoneTap)
-
-    }
-    
-    @objc func didTapPhoneView(_ sender: UITapGestureRecognizer) {
-        guard let phoneNumber = viewModel?.phoneNumber?.filter({ $0.isNumber }) else {
-            print("phoneNumber not there")
-            return
-        }
-        let numberUrl = URL(string: "tel://\(phoneNumber)")!
-        if UIApplication.shared.canOpenURL(numberUrl) {
-            UIApplication.shared.open(numberUrl)
-        }
-        print("call:", phoneNumber)
-    }
-
-}

EmployeeDirectory/ViewControllers/EmployeesViewController.swift

@@ -31,49 +31,26 @@ class EmployeesViewController: UIViewController {
     /// Will show specific state of the viewModel
     private var footerView: TableFooterView?
     
-    private var dataSource: UITableViewDiffableDataSource<Int, Employee>!
-
     // MARK: - Public Methods
 
     public override func viewDidLoad() {
         super.viewDidLoad()
         setupUI()
-        setupDataSource()
         bindViewModel()
         viewModel.fetchEmployees()
     }
     
     // MARK: - Private Methods
         
-    
-    /// Setup TableView dataSource
-    private func setupDataSource() {
-        dataSource = UITableViewDiffableDataSource<Int, Employee>(tableView: tableView) { tableView, indexPath, employee in
-            guard let cell = tableView.dequeueReusableCell(withIdentifier: EmployeeTableViewCell.identifier,for: indexPath) as? EmployeeTableViewCell else {
-                return UITableViewCell()
-            }
-            cell.configure(with: EmployeeCellViewModel(employee: employee))
-            return cell
-        }
-    }
-    
-    /// Snapshot Handling
-    private func applySnapshot(employees: [Employee]) {
-        var snapshot = NSDiffableDataSourceSnapshot<Int, Employee>()
-        snapshot.appendSections([0])
-        snapshot.appendItems(employees, toSection: 0)
-        dataSource.apply(snapshot, animatingDifferences: true)
-    }
-    
     /// Setup the UI by adding the views to the main view
     private func setupUI() {
         view.backgroundColor = .white
         
         // Configure TableView
         tableView.register(EmployeeTableViewCell.self, forCellReuseIdentifier: EmployeeTableViewCell.identifier)
+        tableView.dataSource = self
         view.addSubview(tableView)
         tableView.frame = view.bounds
-        tableView.delegate = self
 
         //add pull to refresh
         tableView.refreshControl = UIRefreshControl()
@@ -93,8 +70,10 @@ class EmployeesViewController: UIViewController {
     private func bindViewModel() {
         viewModel.$employees
             .receive(on: RunLoop.main)
-            .sink { [weak self] employees in
+            .sink { [weak self] _ in
-                self?.applySnapshot(employees: employees)
+                self?.updateFooter()
+                self?.tableView.reloadData()
+                self?.tableView.refreshControl?.endRefreshing()
             }
             .store(in: &cancellables)
         
@@ -105,8 +84,6 @@ class EmployeesViewController: UIViewController {
                     self?.activityIndicator.startAnimating()
                 } else {
                     self?.activityIndicator.stopAnimating()
-                    self?.tableView.refreshControl?.endRefreshing()
-                    self?.updateFooter()
                 }
             }
             .store(in: &cancellables)
@@ -141,15 +118,6 @@ class EmployeesViewController: UIViewController {
     }
 }
 
-extension EmployeesViewController: UITableViewDelegate{
-    func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
-        let employee = viewModel.employees[indexPath.row]
-        let details = EmployeeDetailViewController()
-        details.viewModel = .init(employee: employee)
-        navigationController?.pushViewController(details, animated: true)
-    }
-}
-
 // Mark: - Objective-C Methods
 extension EmployeesViewController {
     
@@ -168,6 +136,22 @@ extension EmployeesViewController {
         case 2: selectedMode = .empty
         default: return
         }
-        viewModel.changeService(to: selectedMode.service)
+        viewModel.changeMode(to: selectedMode)
+    }
+}
+
+/// Mark: - UITableViewDataSource
+extension EmployeesViewController: UITableViewDataSource {
+    public func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
+        return viewModel.employees.count
+    }
+    
+    public func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
+        guard let cell = tableView.dequeueReusableCell(withIdentifier: EmployeeTableViewCell.identifier, for: indexPath) as? EmployeeTableViewCell else {
+            return UITableViewCell()
+        }
+        let employee = viewModel.employees[indexPath.row]
+        cell.configure(with: EmployeeCellViewModel(employee: employee))
+        return cell
     }
 }

EmployeeDirectory/ViewModels/EmployeeDetailsViewModel.swift

@@ -1,50 +0,0 @@
-//
-//  EmployeeDetailsViewModel.swift
-//  EmployeeDirectory
-//
-//  Created by Matt Bruce on 2/6/25.
-//
-
-import Foundation
-import UIKit
-
-/// ViewModel that will be used along with the EmployeeTableViewCell.
-@MainActor
-public class EmployeeDetailViewModel: ObservableObject {
-    // MARK: - Properties
-
-    private let employee: Employee
-    
-    public private(set) var uuid: String
-    public private(set) var fullName: String
-    public private(set) var phoneNumber: String?
-    public private(set) var emailAddress: String
-    public private(set) var biography: String?
-    public private(set) var team: String
-    public private(set) var employeeType: String
-    @Published public private(set) var largePhoto: UIImage?
-    
-    // MARK: - Initializer
-
-    public init(employee: Employee) {
-        self.employee = employee
-        
-        // Initialize properties
-        uuid = employee.uuid.uuidString
-        fullName = employee.fullName
-        phoneNumber = employee.phoneNumber?.formatUSNumber()
-        emailAddress = employee.emailAddress
-        biography = employee.biography
-        team = employee.team
-        employeeType = employee.employeeType.description
-        
-        // Fetch the image for the url if it exists
-        if let endpoint = employee.photoURLLarge {
-            Task{
-                if let photoURL = URL(string: endpoint) {
-                    largePhoto = await ImageCacheService.shared.loadImage(from: photoURL)
-                }
-            }
-        }
-    }
-}

EmployeeDirectory/ViewModels/EmployeesViewModel.swift

@@ -11,7 +11,7 @@ import Foundation
 /// specifically with the EmployeesViewController.
 @MainActor
 public class EmployeesViewModel: ObservableObject {
-    private var employeeService: EmployeeServiceProtocol = EmployeeService()
+    private var serviceMode: EmployeeServiceMode = .production
 
     @Published public private(set) var employees: [Employee] = []
     @Published public private(set) var errorMessage: String? = nil
@@ -27,7 +27,7 @@ public class EmployeesViewModel: ObservableObject {
         Task {
             do {
                 // Fetch employees using the async method
-                let wrapper = try await employeeService.getEmployees()
+                let wrapper = try await EmployeeService.shared.getEmployees(serviceMode)
                 
                 // Update published properties
                 employees = wrapper.employees
@@ -43,8 +43,8 @@ public class EmployeesViewModel: ObservableObject {
 
     }
     
-    public func changeService(to employeeService: EmployeeServiceProtocol) {
+    public func changeMode(to mode: EmployeeServiceMode) {
-        self.employeeService = employeeService
+        serviceMode = mode
         fetchEmployees()
     }
 }

EmployeeDirectory/Views/EmployeeTableViewCell.swift

@@ -128,7 +128,6 @@ public class EmployeeTableViewCell: UITableViewCell {
 
         // Bind the image to the photoImageView
         smallPhotoSubscriber = viewModel.$smallPhoto
-            .compactMap { $0 }
             .receive(on: DispatchQueue.main)
             .sink { [weak self] image in
                 self?.photoImageView.image = image