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web-three/week-4/firestore.html

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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">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>My Shopping List App</title>
<style>
#item {
border: 1px solid #ccc;
font-size: 16px;
}
ul, li {
margin: 0;
padding: 0;
list-style-type: none;
}
li{
padding: .5em 0;
}
input:checked + span {
text-decoration: line-through;
}
</style>
</head>
<body>
<h1>My Shopping List: <span id="listName"></span></h1>
<form action="" id="shoppingForm">
<input type="text" name="item" id="item"> <button id="add">Add</button>
</form>
<hr>
<ul id="shopping-list">
</ul>
<script src="https://www.gstatic.com/firebasejs/7.8.0/firebase-app.js"></script>
<script src="https://www.gstatic.com/firebasejs/7.8.0/firebase-firestore.js"></script>
<script>
// Initialize Cloud Firestore through Firebase
firebase.initializeApp({
apiKey: "AIzaSyBi03NBONZ2ncp4PSvjbAplWm6pC5XnjTw",
authDomain: "dmd-4470.firebaseapp.com",
databaseURL: "https://dmd-4470.firebaseio.com",
projectId: "dmd-4470",
storageBucket: "dmd-4470.appspot.com",
messagingSenderId: "159373794744",
appId: "1:159373794744:web:ca93db7d63c296b472834d"
});
var db = firebase.firestore();
var docRef = db.collection("shopping-lists").doc("mnTUo37Vem1NO2n7CptX");
docRef.get().then(function (doc) {
let name = doc.data().name;
let items = doc.data().list;
listName.innerText = name;
items.forEach(function(item){
addItem(item);
});
}).catch(function (error) {
console.log("Error getting document:", error);
});
const shoppingForm = document.getElementById('shoppingForm');
const inputBox = document.getElementById('item');
const list = document.getElementById('shopping-list');
const listName = document.querySelector("#listName");
shoppingForm.addEventListener('submit', function (event){
let item = inputBox.value;
docRef.update({
list: firebase.firestore.FieldValue.arrayUnion(item)
}).then(function(){
addItem(item);
})
event.preventDefault();
});
function addItem(arg){
if(typeof arg === 'string'){
item = arg;
}else{
item = inputBox.value;
}
// Create list item
let li = document.createElement('li');
li.className = "list-item";
// Create an input element
let input = document.createElement('input');
input.type = "checkbox";
input.name = "items";
// Create a span element
let span = document.createElement('span');
span.innerText = item;
// Create an anchor
let a = document.createElement('a');
a.innerText = "x";
a.href = "";
a.addEventListener('click', function (event) {
let item = this.previousSibling.innerText;
let a = this;
docRef.update({
list: firebase.firestore.FieldValue.arrayRemove(item)
}).then( function(){
a.parentNode.remove();
// this.parentNode.remove();
})
event.preventDefault();
});
// Append each element to our list item
li.appendChild(input);
li.appendChild(span);
li.appendChild(a);
// Append our list item to the <ul>
list.appendChild(li);
inputBox.value = "";
inputBox.focus();
}
</script>
</body>
</html>