refactor(frontent): move components and ts to lib folder

control/frontend/src/lib/ts/main.ts

@@ -0,0 +1,34 @@
+import { screenshot_loop } from './stores/displays';
+import { ping_ip } from './api_handler';
+import type { Display } from './types';
+import { update_folder_elements_recursively } from './stores/files';
+import { db } from './files_display.db';
+
+const update_display_status_interval_seconds = 20;
+
+export async function on_start() {
+	await db.files.clear();
+	await db.files_on_display.clear();
+	await update_all_display_status();
+	await setInterval(update_all_display_status, update_display_status_interval_seconds * 1000);
+}
+
+async function update_all_display_status() {
+	const all_displays: Display[] = await db.displays.toArray();
+	for (const display of all_displays) {
+		const new_status = await ping_ip(display.ip);
+		if (new_status === null && display.status !== null) continue;
+		if (new_status === 'app_online' && display.status !== 'app_online') {
+			on_display_start(display);
+		}
+		if (new_status !== display.status) {
+			display.status = new_status;
+			await db.displays.put(display); // save
+		}
+	}
+}
+
+async function on_display_start(display: Display) {
+	await update_folder_elements_recursively(display, '/');
+	await screenshot_loop(display.id);
+}