feat: Display the person's age

src/lib.rs

@@ -25,10 +25,15 @@ pub fn add_birthday(name: String, date: String) -> Result<()> {
     Ok(())
 }
 
-#[derive(Debug)]
 pub struct Birthday {
-    name: String,
-    date: NaiveDate,
+    pub name: String,
+    pub date: NaiveDate,
+}
+
+impl Birthday {
+    pub fn age(&self, today: NaiveDate) -> Option<u32> {
+        today.years_since(self.date)
+    }
 }
 
 pub fn get_all_birthdays() -> Result<Vec<Birthday>> {

src/main.rs

@@ -1,5 +1,6 @@
 use anyhow::Result;
-use birthday::{add_birthday, Birthday};
+use birthday::Birthday;
+use chrono::Utc;
 use clap::{Parser, Subcommand};
 
 #[derive(Parser, Debug)]
@@ -32,8 +33,16 @@ enum Command {
 }
 
 fn print_birthdays(birthdays: Vec<Birthday>) {
+    let today = Utc::now().date_naive();
     for birthday in birthdays {
-        println!("{:?}", birthday);
+        let age = match birthday.age(today) {
+            Some(age) => age.to_string(),
+            None => "".to_owned(),
+        };
+        println!(
+            "Name={} Birthdate={} Age={}",
+            birthday.name, birthday.date, age
+        );
     }
 }