Initial

TaxCalculator/Views/Home/Index.cshtml

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+@{
+    ViewData["Title"] = "Home Page";
+}
+
+<div class="text-center">
+    <h1 class="display-4">Income Tax Calculator</h1>
+
+    <div>
+        <label for="grossAnnualSalary">Gross Annual Salary:</label>
+        <input type="text" id="grossAnnualSalary" pattern="^[1-9]\d*$" title="Please enter a positive integer value" max="2147483647" />
+        <button id="calculateButton">Calculate</button>
+    </div>
+
+    <div id="resultsSection" class="container mt-4" style="display:none; border: 1px solid #ddd; padding: 15px; text-align: center;">
+        <div class="row">
+            <div class="col-md-6 mx-auto">
+                <label for="calculatedGrossAnnualSalary">Gross Annual Salary:</label>
+                <span id="calculatedGrossAnnualSalary" class="ml-2"></span>
+            </div>
+        </div>
+
+        <div class="row">
+            <div class="col-md-6 mx-auto">
+                <label for="calculatedGrossMonthlySalary">Gross Monthly Salary:</label>
+                <span id="calculatedGrossMonthlySalary" class="ml-2"></span>
+            </div>
+        </div>
+
+        <div class="row">
+            <div class="col-md-6 mx-auto">
+                <label for="calculatedNetAnnualSalary">Net Annual Salary:</label>
+                <span id="calculatedNetAnnualSalary" class="ml-2"></span>
+            </div>
+        </div>
+
+        <div class="row">
+            <div class="col-md-6 mx-auto">
+                <label for="calculatedNetMonthlySalary">Net Monthly Salary:</label>
+                <span id="calculatedNetMonthlySalary" class="ml-2"></span>
+            </div>
+        </div>
+
+        <div class="row">
+            <div class="col-md-6 mx-auto">
+                <label for="calculatedAnnualTaxPaid">Annual Tax Paid:</label>
+                <span id="calculatedAnnualTaxPaid" class="ml-2"></span>
+            </div>
+        </div>
+
+        <div class="row">
+            <div class="col-md-6 mx-auto">
+                <label for="calculatedMonthlyTaxPaid">Monthly Tax Paid:</label>
+                <span id="calculatedMonthlyTaxPaid" class="ml-2"></span>
+            </div>
+        </div>
+    </div>
+
+</div>
+
+
+@section Scripts {
+    <script>
+        $(document).ready(function () {
+            $('#calculateButton').click(function () {
+                var apiUrl = '@ViewBag.ApiUrl';
+
+                toastr["info"]("Wait a second...", "Income Tax Calclator");
+
+                var grossAnnualSalary = $('#grossAnnualSalary').val();
+
+                // Make the AJAX request to the Web API
+                $.ajax({
+                    url: apiUrl + '/api/salary',
+                    type: 'POST',
+                    contentType: 'application/json',
+                    data: grossAnnualSalary,
+                    success: function (result) {
+                        // Update the UI with the calculated results
+                        $('#calculatedGrossAnnualSalary').text(result.grossAnnualSalary);
+                        $('#calculatedGrossMonthlySalary').text(result.grossMonthlySalary);
+                        $('#calculatedNetAnnualSalary').text(result.netAnnualSalary);
+                        $('#calculatedNetMonthlySalary').text(result.netMonthlySalary);
+                        $('#calculatedAnnualTaxPaid').text(result.annualTaxPaid);
+                        $('#calculatedMonthlyTaxPaid').text(result.monthlyTaxPaid);
+
+                        // Show the results section
+                        $('#resultsSection').show();
+                    },
+                    error: function () {
+                        // Handle error
+                        toastr["error"]("An error appears during tax calculating!", "Income Tax Calclator")
+                    }
+                });
+            });
+        });
+    </script>
+}

TaxCalculator/Views/Home/Privacy.cshtml

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+@{
+    ViewData["Title"] = "Privacy Policy";
+}
+<h1>@ViewData["Title"]</h1>
+
+<p>Use this page to detail your site's privacy policy.</p>

TaxCalculator/Views/Shared/Error.cshtml

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+@model ErrorViewModel
+@{
+    ViewData["Title"] = "Error";
+}
+
+<h1 class="text-danger">Error.</h1>
+<h2 class="text-danger">An error occurred while processing your request.</h2>
+
+@if (Model.ShowRequestId)
+{
+    <p>
+        <strong>Request ID:</strong> <code>@Model.RequestId</code>
+    </p>
+}
+
+<h3>Development Mode</h3>
+<p>
+    Swapping to <strong>Development</strong> environment will display more detailed information about the error that occurred.
+</p>
+<p>
+    <strong>The Development environment shouldn't be enabled for deployed applications.</strong>
+    It can result in displaying sensitive information from exceptions to end users.
+    For local debugging, enable the <strong>Development</strong> environment by setting the <strong>ASPNETCORE_ENVIRONMENT</strong> environment variable to <strong>Development</strong>
+    and restarting the app.
+</p>

TaxCalculator/Views/Shared/_Layout.cshtml

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+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="utf-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <title>@ViewData["Title"] - Income Tax Calculator</title>
+    <link rel="stylesheet" href="~/lib/bootstrap/dist/css/bootstrap.min.css" />
+    <link rel="stylesheet" href="~/lib/toastr/build/toastr.css" />
+    <link rel="stylesheet" href="~/css/site.css" asp-append-version="true" />
+    <link rel="stylesheet" href="~/TaxCalculator.styles.css" asp-append-version="true" />    
+</head>
+<body>
+    <header>
+        <nav class="navbar navbar-expand-sm navbar-toggleable-sm navbar-light bg-white border-bottom box-shadow mb-3">
+            <div class="container-fluid">
+                <a class="navbar-brand" asp-area="" asp-controller="Home" asp-action="Index">TaxCalculator</a>
+                <button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target=".navbar-collapse" aria-controls="navbarSupportedContent"
+                        aria-expanded="false" aria-label="Toggle navigation">
+                    <span class="navbar-toggler-icon"></span>
+                </button>
+                <div class="navbar-collapse collapse d-sm-inline-flex justify-content-between">
+                    <ul class="navbar-nav flex-grow-1">
+                        <li class="nav-item">
+                            <a class="nav-link text-dark" asp-area="" asp-controller="Home" asp-action="Index">Home</a>
+                        </li>
+                        <li class="nav-item">
+                            <a class="nav-link text-dark" asp-area="" asp-controller="Home" asp-action="Privacy">Privacy</a>
+                        </li>
+                    </ul>
+                </div>
+            </div>
+        </nav>
+    </header>
+    <div class="container">
+        <main role="main" class="pb-3">
+            @RenderBody()
+        </main>
+    </div>
+
+    <footer class="border-top footer text-muted">
+        <div class="container">
+            &copy; 2023 - Income Tax Calculator - <a asp-area="" asp-controller="Home" asp-action="Privacy">Privacy</a>
+        </div>
+    </footer>
+    <script src="~/lib/jquery/dist/jquery.min.js"></script>
+    <script src="~/lib/bootstrap/dist/js/bootstrap.bundle.min.js"></script>
+    <script src="~/lib/toastr/build/toastr.min.js"></script>
+    <script src="~/js/site.js" asp-append-version="true"></script>
+    @await RenderSectionAsync("Scripts", required: false)
+</body>
+</html>

TaxCalculator/Views/Shared/_Layout.cshtml.css

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+/* Please see documentation at https://learn.microsoft.com/aspnet/core/client-side/bundling-and-minification
+for details on configuring this project to bundle and minify static web assets. */
+
+a.navbar-brand {
+  white-space: normal;
+  text-align: center;
+  word-break: break-all;
+}
+
+a {
+  color: #0077cc;
+}
+
+.btn-primary {
+  color: #fff;
+  background-color: #1b6ec2;
+  border-color: #1861ac;
+}
+
+.nav-pills .nav-link.active, .nav-pills .show > .nav-link {
+  color: #fff;
+  background-color: #1b6ec2;
+  border-color: #1861ac;
+}
+
+.border-top {
+  border-top: 1px solid #e5e5e5;
+}
+.border-bottom {
+  border-bottom: 1px solid #e5e5e5;
+}
+
+.box-shadow {
+  box-shadow: 0 .25rem .75rem rgba(0, 0, 0, .05);
+}
+
+button.accept-policy {
+  font-size: 1rem;
+  line-height: inherit;
+}
+
+.footer {
+  position: absolute;
+  bottom: 0;
+  width: 100%;
+  white-space: nowrap;
+  line-height: 60px;
+}

TaxCalculator/Views/Shared/_ValidationScriptsPartial.cshtml

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+<script src="~/lib/jquery-validation/dist/jquery.validate.min.js"></script>
+<script src="~/lib/jquery-validation-unobtrusive/jquery.validate.unobtrusive.min.js"></script>

TaxCalculator/Views/_ViewImports.cshtml

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+@using TaxCalculator
+@using TaxCalculator.Models
+@addTagHelper *, Microsoft.AspNetCore.Mvc.TagHelpers

TaxCalculator/Views/_ViewStart.cshtml

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+@{
+    Layout = "_Layout";
+}