wiki/assets/js/async_uploads.js

48 lines
1.4 KiB
JavaScript

document.addEventListener("DOMContentLoaded", () => {
const form = document.querySelector(".edit-upload-form");
if (!form) return;
const button = form.querySelector("button[type=submit]");
button.addEventListener("click", (event) => {
event.preventDefault();
button.setAttribute("disabled", "true");
const file = form.querySelector("input[type=file]").files[0];
if (!file) return;
const pageID = /^\/pages\/(\d+)\/edit$/.exec(window.location.pathname)[1];
const progress = form.querySelector("progress");
progress.style.visibility = "visible";
const fd = new FormData();
fd.append("_csrf_token", form.querySelector("input[type=hidden]").value);
fd.append("file", file);
// it's 2021 and fetch doesn't have progress support, smh
const xhr = new XMLHttpRequest();
xhr.upload.addEventListener("progress", (event) => {
const newVal = event.loaded / event.total;
if (newVal >= 1) {
progress.removeAttribute("value");
} else {
progress.value = newVal;
}
});
xhr.addEventListener("load", () => {
window.location.reload();
});
xhr.addEventListener("error", (event) => {
console.error(event);
progress.style.visibility = "hidden";
alert("Upload error");
});
xhr.addEventListener("abort", (event) => {
console.error(event);
progress.style.visibility = "hidden";
alert("Upload aborted");
});
xhr.open("POST", `/pages/${pageID}/uploads`);
xhr.send(fd);
});
});