From 9d064a5a36c2eabab26cc394e9ac725897e41f33 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Pawe=C5=82=20Dyda?= <pawel.dyda@amu.edu.pl>
Date: Thu, 17 Nov 2022 20:44:40 +0100
Subject: [PATCH] We need age, and it better show debugging info.

---
 .../main/java/pl/amu/edu/demo/data/Person.java   | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/demo/02/src/main/java/pl/amu/edu/demo/data/Person.java b/demo/02/src/main/java/pl/amu/edu/demo/data/Person.java
index b2d7453..7b836f4 100644
--- a/demo/02/src/main/java/pl/amu/edu/demo/data/Person.java
+++ b/demo/02/src/main/java/pl/amu/edu/demo/data/Person.java
@@ -3,13 +3,16 @@ package pl.amu.edu.demo.data;
 import lombok.AccessLevel;
 import lombok.AllArgsConstructor;
 import lombok.Builder;
+import lombok.ToString;
 import lombok.experimental.FieldDefaults;
 
 import java.time.LocalDate;
+import java.util.Objects;
 
 @AllArgsConstructor(access = AccessLevel.PRIVATE)
 @FieldDefaults(level = AccessLevel.PUBLIC, makeFinal = true)
 @Builder
+@ToString
 public class Person {
     String displayName;
     String firstName;
@@ -17,4 +20,17 @@ public class Person {
     LocalDate birthDate;
     Housing housing;
     boolean isMarried;
+
+    public int getAge() {
+        var birthYear = Objects.requireNonNull(birthDate).getYear();
+        var now = LocalDate.now();
+        var baseDifference = now.getYear() - birthYear;
+        if (birthDate.getMonthValue() > now.getMonthValue() ||
+                (birthDate.getMonthValue() == now.getMonthValue() &&
+                        birthDate.getDayOfMonth() >= now.getDayOfMonth())) {
+            return baseDifference;
+        }
+        return baseDifference - 1;
+    }
+
 }