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app.html
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<html>
<head>
<title>To-Do List</title>
<style>
th,
td,
p,
input {
font: 14px Verdana;
}
table,
th,
td {
border: solid 1px #DDD;
border-collapse: collapse;
padding: 2px 3px;
text-align: center;
}
th {
font-weight: bold;
}
</style>
</head>
<body>
<div id="login">
<input type="text" id="username" placeholder="Username">
<input type="password" id="password" placeholder="Password">
<button type="button" onclick="login()">Login</button>
<button type="button" onclick="register()">Register</button>
<button type="button" onclick="getAllUsers()">Get all users</button>
</div>
<div id=logout>
<button type="button" onclick="logout()">Logout</button>
<button type="button" onclick="addNewTaskList()">Add new task list</button>
<button type="button" onclick="taskListDelete()">Delete selected task list</button>
<div id="content">
</div>
<p id="showData"></p>
</div>
</body>
<script>
document.getElementById("logout").hidden = true;
localStorage.clear();
var responseRef;
function addNewTaskList() {
let formData = new FormData(); // creates an object, optionally fill from <form>
formData.append("username", localStorage.getItem("username"));
formData.append("name", prompt("What will be your new task list's name?"));
console.log(formData.get("name").length);
if (formData.get("name").length > 4) {
xmlHttp = new XMLHttpRequest();
xmlHttp.onreadystatechange = function () {
if (xmlHttp.readyState == 4 && (xmlHttp.status == 200 || xmlHttp.status == 418)) {
alert(xmlHttp.responseText);
}
};
xmlHttp.open("POST", 'http://localhost:8080/taskList/add');
xmlHttp.send(formData);
}
}
function getAllUsers() {
xmlHttp = new XMLHttpRequest();
xmlHttp.onreadystatechange = function () {
if (xmlHttp.readyState == 4 && xmlHttp.status == 200 && JSON.parse(xmlHttp.responseText) != null) {
console.log(JSON.parse(xmlHttp.responseText));
}
};
xmlHttp.open("GET", 'http://localhost:8080/');
xmlHttp.send(null);
}
function register() {
xmlHttp = new XMLHttpRequest();
let formData = new FormData(); // creates an object, optionally fill from <form>
formData.append("username", document.getElementById("username").value); // appends a field
formData.append("password", document.getElementById("password").value); // appends a field
xmlHttp.onreadystatechange = function () {
if (xmlHttp.readyState == 4 && xmlHttp.status == 200) {
alert(xmlHttp.responseText);
}
};
xmlHttp.open("POST", 'http://localhost:8080/register');
xmlHttp.send(formData);
}
function createTable(response) {
console.log(response);
var col = [];
for (var i = 0; i < response.length; i++) {
for (var key in response[i]) {
if (col.indexOf(key) === -1) {
col.push(key);
}
}
}
// CREATE DYNAMIC TABLE.
var table = document.createElement("table");
// CREATE HTML TABLE HEADER ROW USING THE EXTRACTED HEADERS ABOVE.
var tr = table.insertRow(-1); // TABLE ROW.
for (var i = 0; i < col.length; i++) {
var th = document.createElement("th"); // TABLE HEADER.
th.innerHTML = col[i].charAt(0).toUpperCase() + col[i].slice(1);;
th.id = col[i];
tr.appendChild(th);
}
// ADD JSON DATA TO THE TABLE AS ROWS.
for (var i = 0; i < response.length; i++) {
let tr = table.insertRow(-1);
tr.addEventListener("click", function () {
if (confirm("Do you want to delete this (" + tr.children[0].innerHTML + ")record?")) {
xmlHttp = new XMLHttpRequest();
let formData = new FormData(); // creates an object, optionally fill from <form>
formData.append("username", localStorage.getItem("username")); // appends a field
formData.append("name", tr.children[0].innerHTML);
formData.append("id", select.value);
xmlHttp.onreadystatechange = function () {
if (xmlHttp.readyState == 4 && xmlHttp.status == 200) {
alert(xmlHttp.responseText);
}
};
xmlHttp.open("POST", 'http://localhost:8080/task/delete');
xmlHttp.send(formData);
}
})
for (var j = 0; j < col.length; j++) {
var tabCell = tr.insertCell(-1);
tabCell.innerHTML = response[i][col[j]];
}
}
// FINALLY ADD THE NEWLY CREATED TABLE WITH JSON DATA TO A CONTAINER.
document.getElementById("showData").innerHTML = "";
document.getElementById("showData").appendChild(table);
var addTaskButton = document.createElement("button");
addTaskButton.addEventListener("click", function () {
var name = prompt("Please enter the name of new task:");
var description = prompt("Please enter the description of new task:");
var date = prompt("Please enter the date (YYYY-MM-DD):");
let formData = new FormData(); // creates an object, optionally fill from <form>
formData.append("username", localStorage.getItem("username"));
formData.append("id", document.getElementById("select").value);
formData.append("description", description);
formData.append("date", date);
formData.append("name", name);
xmlHttp = new XMLHttpRequest();
xmlHttp.onreadystatechange = function () {
if (xmlHttp.readyState == 4 && (xmlHttp.status == 200 || xmlHttp.status == 418)) {
alert(xmlHttp.responseText);
}
};
xmlHttp.open("POST", 'http://localhost:8080/task/add');
xmlHttp.send(formData);
})
addTaskButton.innerHTML = "Add new task";
var filterList = document.createElement("select");
let filterOptionFirst = document.createElement("option");
let filterOptionSecond = document.createElement("option");
let filterOptionThird = document.createElement("option");
filterOptionFirst.value = "all"
filterOptionFirst.innerHTML = "Show all tasks";
filterList.appendChild(filterOptionFirst);
filterOptionSecond.value = "done"
filterOptionSecond.innerHTML = "Show only completed tasks";
filterList.appendChild(filterOptionSecond);
filterOptionThird.value = "notDone"
filterOptionThird.innerHTML = "Show only not completed tasks";
filterList.appendChild(filterOptionThird);
filterList.addEventListener("change", function () {
switch (filterList.value) {
case "all":
tr = document.getElementsByTagName("tr");
Array.from(tr).forEach(element => {
element.hidden = false;
});
break;
case "done":
tr = document.getElementsByTagName("tr");
Array.from(tr).forEach(element => {
element.hidden = true;
});
response = response.filter(function (item) {
return item.status == 1;
})
Array.from(document.getElementsByTagName("tr")).forEach(element => {
response.forEach(selement => {
if (element.children[0].innerHTML.includes(selement.name)) {
element.hidden = false;
}
});
});
break;
case "notDone":
tr = document.getElementsByTagName("tr");
Array.from(tr).forEach(element => {
element.hidden = true;
});
response = response.filter(function (item) {
return item.status != 1;
})
Array.from(document.getElementsByTagName("tr")).forEach(element => {
response.forEach(selement => {
if (element.children[0].innerHTML.includes(selement.name)) {
element.hidden = false;
}
});
});
break;
default:
break;
}
})
document.getElementById("showData").appendChild(addTaskButton);
document.getElementById("showData").appendChild(filterList);
document.querySelectorAll("th").forEach(element => {
element.addEventListener("click", function () {
createTable(response.sort(sortByProperty(element.id)));
})
});
}
function taskListDelete() {
let formData = new FormData(); // creates an object, optionally fill from <form>
formData.append("username", localStorage.getItem("username"));
formData.append("id", document.getElementById("select").value);
xmlHttp = new XMLHttpRequest();
xmlHttp.onreadystatechange = function () {
if (xmlHttp.readyState == 4 && (xmlHttp.status == 200 || xmlHttp.status == 418)) {
alert(xmlHttp.responseText);
}
};
xmlHttp.open("POST", 'http://localhost:8080/taskList/delete');
xmlHttp.send(formData);
}
function login() {
var selectIndex = 0
var xmlHttp;
xmlHttp = new XMLHttpRequest();
let formData = new FormData(); // creates an object, optionally fill from <form>
formData.append("username", document.getElementById("username").value); // appends a field
formData.append("password", document.getElementById("password").value); // appends a field
xmlHttp.onreadystatechange = function () {
if (xmlHttp.readyState == 4 && xmlHttp.status == 200) {
responseRef = JSON.parse(xmlHttp.responseText);
document.getElementById("login").hidden = true;
document.getElementById("logout").hidden = false;
document.getElementById("showData").innerHTML = "";
var select = document.createElement("select");
select.id = "select";
var taskListDeleteButton = document.createElement("button");
select.appendChild(document.createElement("option"));
JSON.parse(xmlHttp.responseText).taskLists.forEach(element => {
var option = document.createElement("option");
option.value = selectIndex;
option.id = selectIndex;
option.innerHTML = element.name;
selectIndex++;
select.appendChild(option);
});
select.addEventListener("change", function () {
createTable(JSON.parse(xmlHttp.responseText).taskLists[document.getElementById("select").value].taskList)
})
document.getElementById("content").appendChild(select);
localStorage.setItem("username", document.getElementById("username").value);
// createTable(JSON.parse(xmlHttp.responseText).tasks[0]);
} else if (xmlHttp.readyState == 4 && xmlHttp.status == 418) {
alert("User not found!")
}
};
xmlHttp.open("POST", 'http://localhost:8080/login');
xmlHttp.send(formData);
}
function logout() {
document.getElementById("login").hidden = false;
document.getElementById("logout").hidden = true;
document.getElementById("showData").innerHTML = "";
document.getElementById("content").innerHTML = "";
}
function sortByProperty(property) {
return function (a, b) {
if (a[property] > b[property])
return 1;
else if (a[property] < b[property])
return -1;
return 0;
}
}
</script>
</html>