save username in cookie
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7 changed files with 149 additions and 95 deletions
148
Lab01/app/templates/_base.tmpl
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148
Lab01/app/templates/_base.tmpl
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{{define "head"}}
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<link rel="apple-touch-icon" sizes="180x180" href="../static/icons/apple-touch-icon.png">
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<link rel="icon" type="image/png" sizes="32x32" href="../static/icons/favicon-32x32.png">
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<link rel="icon" type="image/png" sizes="16x16" href="../static/icons/favicon-16x16.png">
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<link rel="manifest" href="../static/icons/site.webmanifest">
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<link rel="mask-icon" href="../static/icons/safari-pinned-tab.svg" color="#5bbad5">
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<meta name="msapplication-TileColor" content="#da532c">
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<meta name="theme-color" content="#ffffff">
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<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/css/bootstrap.min.css" rel="stylesheet"
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integrity="sha384-1BmE4kWBq78iYhFldvKuhfTAU6auU8tT94WrHftjDbrCEXSU1oBoqyl2QvZ6jIW3" crossorigin="anonymous">
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{{end}}
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{{define "navbar"}}
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<nav class="navbar navbar-expand-md navbar-light bg-light">
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<div class="container-fluid">
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<a class="navbar-brand" href="/">SuperSafe</a>
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<button class="navbar-toggler" type="button" data-bs-toggle="collapse"
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data-bs-target="#navbarSupportedContent"
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aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
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<span class="navbar-toggler-icon"></span>
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</button>
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<div class="collapse navbar-collapse" id="navbarSupportedContent">
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<ul class="ms-auto navbar-nav mb-2 mb-lg-0">
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<li class="nav-item me-2">
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<a hidden id="button-tasks" class="btn btn-primary" href="/tasks">Tasks</a>
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</li>
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<li class="nav-item me-2">
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<a hidden id="button-login" class="btn btn-primary" href="/login">Login</a>
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</li>
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<li class="nav-item">
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<button hidden id="button-logout" class="btn btn-danger" onclick="logout()">Logout</button>
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</li>
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</ul>
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</div>
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</div>
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</nav>
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{{end}}
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{{define "userForm"}}
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<form class="row g-3 needs-validation mb-3" novalidate>
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<div class="col-12">
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<label for="username" class="form-label">Username</label>
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<div class="input-group has-validation">
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<span class="input-group-text" id="inputGroupPrepend">@</span>
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<input type="text" class="form-control" id="username"
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aria-describedby="inputGroupPrepend" required>
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<div class="invalid-feedback">
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Please choose a username.
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</div>
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</div>
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</div>
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<div class="col-12">
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<label for="password" class="form-label">Password</label>
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<input type="password" class="form-control" id="password" aria-describedby="passwordHelp" required>
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<div id="invalidPassword" class="invalid-feedback">
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Please choose a password.
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</div>
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</div>
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<div class="col-12">
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<button class="btn btn-primary" id="button" type="submit">Submit form</button>
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</div>
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</form>
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{{end}}
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{{define "scripts"}}
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<script>
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const button_login = document.getElementById("button-login");
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const button_logout = document.getElementById("button-logout");
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const button_tasks = document.getElementById("button-tasks");
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const username = getCookie("username");
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function setCookie(cookie_name, cookie_value, cookie_expiry) {
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const d = new Date();
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d.setTime(d.getTime() + (cookie_expiry * 24 * 60 * 60 * 1000));
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let expires = "expires=" + d.toUTCString();
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document.cookie = cookie_name + "=" + cookie_value + ";" + expires + ";path=/;SameSite=Lax"
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}
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function deleteCookie(cookie_name) {
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document.cookie = cookie_name + "=" + ";expires=Thu, 01 Jan 1970 00:00:00 UTC;path=/;SameSite=Lax"
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}
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function getCookie(cookie_name) {
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let name = cookie_name + "=";
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let decodedCookie = decodeURIComponent(document.cookie);
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let cookieArray = decodedCookie.split('; ');
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let result;
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cookieArray.forEach(val => {
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if (val.indexOf(name) === 0) result = val.substring(name.length);
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})
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return result;
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}
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function redirect(location) {
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window.location.href = location;
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}
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async function userLoggedIn() {
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let data = new FormData();
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data.append("username", username);
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const response = await fetch("/user", {method: 'POST', body: data});
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const json = await response.json();
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if (json.logged_in === true) {
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button_login.hidden = true;
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button_logout.hidden = false;
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button_tasks.hidden = false;
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} else {
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button_login.hidden = false;
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button_logout.hidden = true;
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button_tasks.hidden = true;
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}
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return json.logged_in
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}
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async function logout() {
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button_logout.disabled = true;
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let data = new FormData();
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data.append("username", username);
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const response = await fetch("/logout", {method: 'POST', body: data});
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deleteCookie("username");
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response.ok && redirect("/");
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}
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</script>
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{{end}}
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{{define "formScripts"}}
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<script>
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let form = document.querySelector('.needs-validation')
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if (form) {
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form.addEventListener('submit', function (event) {
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if (!form.checkValidity()) {
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event.preventDefault();
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event.stopPropagation();
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} else {
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document.getElementById("button").disabled = true;
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event.preventDefault();
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let data = new FormData();
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let form_element = document.getElementsByClassName('form-control');
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for (let i = 0; i < form_element.length; i++) {
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data.append(form_element[i].id, form_element[i].value);
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}
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submitForm(data);
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}
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form.classList.add('was-validated');
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}, false);
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}
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</script>
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{{end}}
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