1 files changed, 148 insertions, 0 deletions
diff --git a/src/app/js/update.js b/src/app/js/update.js
new file mode 100644
index 0000000..6aa1b6d
--- /dev/null
+++ b/src/app/js/update.js
@@ -0,0 +1,148 @@
+const ipcRenderer = require("electron").ipcRenderer;
+
+const lang = require("../../lang");
+
+// updates version numbers
+ipcRenderer.on("version", (event, versions) => {
+	vpversion.innerText = versions.vp;
+	nsversion.innerText = versions.ns;
+	tf2Version.innerText = versions.tf2;
+
+	if (versions.ns == "unknown") {
+		let buttons = document.querySelectorAll(".modbtns button");
+
+		for (let i = 0; i < buttons.length; i++) {
+			buttons[i].disabled = true;
+		}
+
+		// since Northstar is not installed, we cannot launch it
+		update.ns.should_install = true;
+		playNsBtn.innerText = lang("gui.install");
+	}
+}); ipcRenderer.send("get-version");
+
+// when an update is available it'll ask the user about it
+ipcRenderer.on("update-available", () => {
+	if (confirm(lang("gui.update.available"))) {
+		ipcRenderer.send("update-now");
+	}
+})
+
+// frontend part of updating Northstar
+ipcRenderer.on("ns-update-event", (event, options) => {
+	let key = options.key;
+	if (typeof options == "string") {
+		key = options;
+	}
+
+	// updates text in update button to `lang(key)`
+	let update_btn = () => {
+		document.getElementById("update")
+			.innerText = `(${lang(key)})`;
+	}
+
+	switch(key) {
+		case "cli.update.uptodate_short":
+		case "cli.update.no_internet":
+			// initial value
+			let delay = 0;
+
+			// get current time
+			let now = new Date().getTime();
+
+			// check if `update.ns.last_checked` was less than 500ms
+			// since now, this variable is set when `update.ns()` is
+			// called
+			if (now - update.ns.last_checked < 500) {
+				// if less than 500ms has passed, set `delay` to the
+				// amount of milliseconds missing until we've hit that
+				// 500ms threshold
+				delay = 500 - (now - update.ns.last_checked);
+			}
+
+			// request up-to-date version numbers
+			ipcRenderer.send("get-version");
+
+			// wait `delay`ms
+			setTimeout(() => {
+				// set buttons accordingly
+				update_btn();
+				set_buttons(true);
+				update.ns.progress(false);
+				playNsBtn.innerText = lang("gui.launch");
+			}, delay)
+
+			break;
+		default:
+			update_btn();
+
+			if (options.progress) {
+				update.ns.progress(options.progress);
+			}
+
+			if (options.btn_text) {
+				playNsBtn.innerText = options.btn_text;
+			}
+
+			set_buttons(false);
+			break;
+	}
+})
+
+let update = {
+	// deletes install and update cache
+	delete_cache: () => {
+		ipcRenderer.send("delete-install-cache");
+	},
+
+	// updates Northstar, `force_update` forcefully updates Northstar,
+	// causing it to update, even if its already up-to-date
+	ns: (force_update) => {
+		update.ns.last_checked = new Date().getTime();
+		ipcRenderer.send("update-northstar", force_update);
+		update.ns.should_install = false;
+	}
+}
+
+// should Northstar be updated?
+update.ns.should_install = false;
+
+// when was the last time we checked for a Northstar update
+update.ns.last_checked = new Date().getTime();
+
+// `percent` should be a number between 0 to 100, if it's `false` it'll
+// reset it back to nothing instantly, with no animation
+update.ns.progress = (percent) => {
+	// reset button progress
+	if (percent === false) {
+		document.querySelector(".contentContainer #nsMain .playBtn")
+			.style.setProperty("--progress", "unset");
+
+		return;
+	}
+
+	percent = parseInt(percent);
+
+	// make sure we're dealing with a number
+	if (isNaN(percent) || typeof percent !== "number") {
+		return false;
+	}
+
+	// limit percent, while this barely has a difference, if you were to
+	// set a very high number, the CSS would then use a very high
+	// number, not great.
+	if (percent > 100) {
+		percent = 100;
+	} else if (percent < 0) {
+		percent = 0;
+	}
+
+	// invert number to it works in the CSS
+	percent = 100 - percent;
+
+	// set the CSS progress variable
+	document.querySelector(".contentContainer #nsMain .playBtn")
+		.style.setProperty("--progress", percent + "%");
+}
+
+module.exports = update;