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135 lines
4.0 KiB
JavaScript

(function() {
let orders = null;
const appLoadingEle = document.getElementById("app-loading-display");
const orderWrapperEle = document.getElementById("order-display");
const orderEmptyTextEle = document.getElementById("order-empty-text");
const orderTableEle = document.getElementById("order-table");
const orderTableBodyEle = document.querySelector("#order-table tbody");
const addOrderEle = document.getElementById("add-order-wrapper");
const addOrderForm = document.getElementById("add-order-form");
const orderIdField = document.getElementById("order-id");
const productIdField = document.getElementById("product-id");
const quantityField = document.getElementById("quantity");
const amountField = document.getElementById("amount");
const taxField = document.getElementById("tax");
const shippingField = document.getElementById("shippingAmount");
const shippingAddressField = document.getElementById("shippingAddress");
function fetchOrders() {
fetch("http://localhost:8080/orders")
.then(r => r.json())
.then(r => orders = r)
.then(renderOrders)
.catch((e) => {
init();
});
}
function init() {
fetch("http://localhost:8080/init")
.then(() => fetchOrders())
.catch((e) => displayError(e));
}
function renderOrders() {
appLoadingEle.classList.add("d-none");
orderWrapperEle.classList.remove("d-none");
addOrderEle.classList.remove("d-none");
if (orders.length === 0) {
orderEmptyTextEle.classList.remove("d-none");
orderTableEle.classList.add("d-none");
return;
}
orderEmptyTextEle.classList.add("d-none");
orderTableEle.classList.remove("d-none");
while (orderTableBodyEle.firstChild) {
orderTableBodyEle.removeChild(orderTableBodyEle.firstChild);
}
orders.forEach((order) => {
const orderId = order.order_id;
const row = document.createElement("tr");
row.appendChild(createCell(order.order_id));
row.appendChild(createCell(order.product_id));
row.appendChild(createCell(order.quantity));
row.appendChild(createCell(order.amount));
row.appendChild(createCell(order.shipping));
row.appendChild(createCell(order.tax));
row.appendChild(createCell(order.shipping_address));
const actionCell = document.createElement("td");
const deleteButton = document.createElement("button");
deleteButton.classList.add(...["btn","btn-sm","btn-danger"]);
deleteButton.innerText = "Delete";
deleteButton.addEventListener("click", (e) => {
e.preventDefault();
deleteOrder(orderId);
});
actionCell.appendChild(deleteButton);
row.appendChild(actionCell);
orderTableBodyEle.appendChild(row);
});
}
function createCell(contents) {
const cell = document.createElement("td");
cell.innerText = contents;
return cell;
}
function deleteOrder(orderId) {
fetch(`http://localhost:8080/delete_order?id=${orderId}`)
.then(() => fetchOrders());
}
function displayError(err) {
alert("Error:" + err);
}
function onAddFormSubmit(e) {
e.preventDefault();
const data = {
order_id : parseFloat(orderIdField.value),
product_id : parseFloat(productIdField.value),
quantity : parseFloat(quantityField.value),
amount : parseFloat(amountField.value),
shipping : parseFloat(shippingField.value),
tax : parseFloat(taxField.value),
shipping_address : shippingAddressField.value,
};
fetch("http://localhost:8080/create_order", {
method: "POST",
body: JSON.stringify(data),
headers: { "Content-type": "application/json" },
}).then(() => fetchOrders())
.then(() => resetAddOrderForm());
alert("Order added");
}
function resetAddOrderForm() {
orderIdField.value = "";
productIdField.value = "";
quantityField.value = "";
amountField.value = "";
shippingField.value = "";
taxField.value = "";
shippingAddressField.value = "";
}
fetchOrders();
addOrderForm.addEventListener("submit", onAddFormSubmit);
})();