From 69f459b93130541938c7ec81cb23e7f426960862 Mon Sep 17 00:00:00 2001
From: Oleksii Krylov <lehakrylov1996@gmail.com>
Date: Tue, 9 Sep 2025 13:39:16 +0200
Subject: [PATCH 1/4] 01 Done

---
 01/app.js | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/01/app.js b/01/app.js
index e69de29..4f24587 100644
--- a/01/app.js
+++ b/01/app.js
@@ -0,0 +1,8 @@
+const user = {
+    firstName: 'Oleksii',
+    lastName: 'Krylov',
+    sex: 'male',
+    age: 29
+}
+
+console.log(user)
\ No newline at end of file

From edf0a8f868ea34bfc8b00a8ab059ae6619584372 Mon Sep 17 00:00:00 2001
From: Oleksii Krylov <lehakrylov1996@gmail.com>
Date: Tue, 9 Sep 2025 13:56:30 +0200
Subject: [PATCH 2/4] 02 Done

---
 02/app.js | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/02/app.js b/02/app.js
index a70d947..9a4c1e4 100644
--- a/02/app.js
+++ b/02/app.js
@@ -8,4 +8,14 @@ const calendarJS = {
     'ES7': '2016-06',
     'ES8': '2017-06',
     'ES9': '2018-06',
+}
+
+for(const key in calendarJS) {
+    // console.log (key, calendarJS[key])
+    const value = calendarJS[key]
+    if(value === null) {
+        console.log(' ES4 nie zostało wydane')
+    }else {
+        console.log(key + ' wydane terminie ' + value)
+    }
 }
\ No newline at end of file

From a690bb1e119ba15d60a93600468bc6c0be44f552 Mon Sep 17 00:00:00 2001
From: Oleksii Krylov <lehakrylov1996@gmail.com>
Date: Wed, 10 Sep 2025 09:41:09 +0200
Subject: [PATCH 3/4] 03 Done

---
 03/app.js | 37 +++++++++++++++++++++++++++++++++++++
 1 file changed, 37 insertions(+)

diff --git a/03/app.js b/03/app.js
index 3ab7c52..984ccfc 100644
--- a/03/app.js
+++ b/03/app.js
@@ -42,14 +42,51 @@ books.getAuthor = function(isbn) {
 }
 
 books.getTitle = function(isbn, lang) {
+    if(typeof this[isbn] === 'undefined') {
+        
+        return null;
+    }
+
+    if(typeof this[isbn]['title'] === 'undefined'){
+
+            return null;
+    }
+
+    const title = this[isbn]['title'][lang];
+
+    if(title) {
+        return title;
+    }
+
+    return null;
+
+       
 
 }
 
 books.getTranslator = function(isbn, lang) {
 
+    if (typeof this[isbn] === 'undefined') {
+        return null;
+    }
+
+    if (typeof this[isbn]['translator'] === 'undefined') {
+        return null;
+    }
+
+    const translator = this[isbn]['translator'][lang];
+
+    if (translator) {
+        return translator;
+    }
+
+    
+    return false;
 }
 
 
+
+
 console.log( books.getAuthor('978-83-7278-000-3') ); // J.K. Rowling
 console.log( books.getAuthor('000-00-0000-000-0') ); // null
 console.log( books.getTitle('978-83-7278-000-3', 'pl') ); // Harry Potter i Kamień Filozoficzny

From 36f0f34093efda805787a1523b14aa5be370950c Mon Sep 17 00:00:00 2001
From: Oleksii Krylov <lehakrylov1996@gmail.com>
Date: Wed, 10 Sep 2025 10:06:56 +0200
Subject: [PATCH 4/4] 04 Done

---
 04/app.js | 20 +++++++++++++++++---
 1 file changed, 17 insertions(+), 3 deletions(-)

diff --git a/04/app.js b/04/app.js
index 1090571..67ef2e1 100644
--- a/04/app.js
+++ b/04/app.js
@@ -2,8 +2,22 @@ const user = {
     firstName: 'Adam',
     lastName: 'Nowak',
     born: {
-        day: '14',
-        month: '04',
+        day: '10',
+        month: '09',
         year: '1985'
     }
-}
\ No newline at end of file
+}
+
+const today = new Date();
+
+const todayDay = today.getDate();
+const todayMonth = today.getMonth() + 1;
+
+const userDay = Number(user.born.day);
+const userMonth = Number(user.born.month);
+
+if (todayDay === userDay && todayMonth === userMonth ) {
+    console.log ('it is birthday day ' + user.firstName ); 
+} else {
+    console.log ('it is not birthday day ' + user.firstName)
+}