added mock services to read local json

Signed-off-by: Matt Bruce <mbrucedogs@gmail.com>

EmployeeDirectory/Services/MockEmployeeService.swift

@@ -0,0 +1,43 @@
+//
+//  MockEmployeeService.swift
+//  EmployeeDirectory
+//
+//  Created by Matt Bruce on 1/21/25.
+//
+import Foundation
+
+public class MockEmployeeService: EmployeeServiceProtocol {
+    // MARK: - Properties
+    public static let shared = MockEmployeeService() // Default shared instance
+    private let employees: Employees
+
+    // MARK: - Initializer
+
+    public init() {
+        let jsonFileName = "localTest"
+        guard let url = Bundle.main.url(forResource: jsonFileName, withExtension: "json"),
+                let data = try? Data(contentsOf: url),
+              let localData = try? JSONDecoder().decode(Employees.self, from: data) else {
+            employees = .init(employees: [], total: 0, page: 0, perPage: 0)
+            return
+        }
+        employees = localData
+    }
+    
+    public func getEmployees(_ serviceMode: EmployeeServiceMode) async throws -> Employees {
+        return employees
+    }
+    
+    public func getEmployees(_ serviceMode: EmployeeServiceMode, page: Int, perPage: Int) async throws -> Employees {
+        let totalUsers = employees.employees.count
+        let startIndex = (page - 1) * perPage
+        let endIndex = min(startIndex + perPage, totalUsers)
+
+        guard startIndex < totalUsers else {
+            return .init(employees: [], total: totalUsers, page: page, perPage: perPage) // Return empty if out of bounds
+        }
+
+        let paginatedUsers = Array(employees.employees[startIndex..<endIndex])
+        return .init(employees: paginatedUsers, total: totalUsers, page: page, perPage: perPage)
+    }
+}