rework (error) logging

src/util/log.rs

@@ -0,0 +1,20 @@
+use crate::util::consts::path;
+use std::{fs::File, io::Write};
+use strum::Display;
+
+#[derive(Display)]
+pub enum LogLevel {
+    Error,
+    Panic,
+}
+
+pub fn log(level: LogLevel, message: String) {
+    let mut file = File::options()
+        .create(true)
+        .append(true)
+        .open(path::APP_LOG.as_path())
+        .unwrap();
+    let timestamp = chrono::Local::now().to_rfc3339_opts(chrono::SecondsFormat::Secs, false);
+    let message = format!("[{timestamp}] [{level}]\n{message}\n\n");
+    file.write_all(message.as_bytes()).unwrap();
+}