feat: add basic errors

Cargo.toml

@@ -7,3 +7,4 @@ edition = "2024"
 chrono = { version = "0.4.41", features = ["serde"] }
 serde = { version = "1.0.219", features = ["derive"] }
 serde_json = "1.0.141"
+uuid = { version = "1.17.0", features = ["serde", "v4"] }

src/lib.rs

@@ -19,9 +19,14 @@ impl App {
         Self::default()
     }
 
-    pub fn add(&mut self, item: Item) {
+    pub fn add(&mut self, item: Item) -> Result<()> {
         self.logs.push(item);
-        let _ = self.save();
+        self.save()
+    }
+
+    pub fn remove<T: AsRef<str>>(&mut self, id: T) -> Result<()> {
+        self.logs.retain(|i| i.id() != id.as_ref());
+        self.save()
     }
 
     pub fn save(&self) -> Result<()> {

src/log.rs

@@ -1,8 +1,10 @@
 use chrono::{DateTime, Local};
 use serde::{Deserialize, Serialize};
+use uuid::Uuid;
 
 #[derive(Debug, Clone, Deserialize, Serialize, PartialEq, Eq, PartialOrd, Ord)]
 pub struct Item {
+    id: Uuid,
     content: String,
     created: DateTime<Local>,
     modified: DateTime<Local>,
@@ -17,12 +19,17 @@ impl Item {
         self.content = content;
         self.modified = Local::now();
     }
+
+    pub fn id(&self) -> String {
+        self.id.to_string()
+    }
 }
 
 impl Default for Item {
     fn default() -> Self {
         let now = Local::now();
         Self {
+            id: Uuid::new_v4(),
             content: String::new(),
             created: now,
             modified: now,

src/main.rs

@@ -1,8 +1,15 @@
-use lw::App;
+use std::error::Error;
 
-fn main() {
+use lw::{App, log::Item};
+
+fn main() -> Result<(), Box<dyn Error>> {
     let mut app = App::default();
-    app.add("hello_world".into());
-    app.save().unwrap();
+    let item = Item::from("hello_world");
+    let id = item.id();
+    app.add(item)?;
     println!("{app:?}");
+    app.remove(id)?;
+    app.save()?;
+    println!("{app:?}");
+    Ok(())
 }