ok we can main thats nice

src/main.rs

@@ -3,9 +3,38 @@ use std::io::{Read, Write};
 use std::fs::File;
 use std::time::{SystemTime, UNIX_EPOCH, Duration};
 use std::ops::Add;
+use clap::Parser;
+
+#[derive(Debug, Parser)]
+struct Flags {
+   #[arg(short = 'f', long = "file")]
+   f: String,
+
+   #[arg(short = 'l', long = "log")]
+   log: bool,
+
+   #[arg(short = 'a', long = "add")]
+   add: Option<String>,
+
+   #[arg(short = 't', long = "tag")]
+   tag: Option<String>,
+}
 
 fn main() {
-    println!("Hello, world!");
+   let flags = Flags::parse();
+
+   match flags.add.clone() {
+      Some(add) => {
+         let tag = flags.tag.clone().unwrap_or("".to_string());
+
+         let mut tsheet = load(flags.f.clone()).unwrap();
+         tsheet.add(add, tag);
+         save(flags.f.clone(), tsheet).unwrap();
+      },
+      None => {},
+   };
+
+   println!("{:?}", flags);
 }
 
 #[derive(Debug, PartialEq, Serialize, Deserialize)]