diff --git a/CMakeLists.txt b/CMakeLists.txt
index b11e745..2d8d0f2 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,4 +1,4 @@
 cmake_minimum_required(VERSION 3.10)
-project(Hueta)
+project(test_app)
 set(CMAKE_CXX_STANDART 17)
-add_executable(Hueta main.cpp)
+add_executable(test_app main.cpp)
diff --git a/main.cpp b/main.cpp
index 87201b8..9bbb7b4 100644
--- a/main.cpp
+++ b/main.cpp
@@ -5,7 +5,12 @@ int main() {
     LoggerClass logger;
     logger.logName = "Test";
     logger.logLevel=0;
-    std::cout << "Hello World\n";
-    logger.info("YA SMOG STROKU PEREDAT', AHUET'");
+
+    logger.debug("YA SMOG STROKU PEREDAT'");
+    logger.info("YA SMOG STROKU PEREDAT'");
+    logger.warn("YA SMOG STROKU PEREDAT'");
+    logger.error("YA SMOG STROKU PEREDAT'");
+    logger.critical("YA SMOG STROKU PEREDAT'");
+
     return 0;
 }
diff --git a/src/logger.cpp b/src/logger.cpp
index 33ee9e6..b16ea18 100644
--- a/src/logger.cpp
+++ b/src/logger.cpp
@@ -1,13 +1,82 @@
 #include <iostream>
+#include <fstream>
+#include <time.h>
+
+using namespace std;
+
+enum LogLevels {
+    DEBUG,
+    INFO,
+    WARN,
+    ERROR,
+    CRITICAL
+};
 
 class LoggerClass {
     public:
         std::string logName;
+        std::string filepath = "test.log";
         int logLevel;
+
+        void debug(const std::string& message) {
+            action(LogLevels::DEBUG, message);
+        }
         
         void info(const std::string& message) {
-            std::cout "" << logName << "" << message << "\n";
+            action(LogLevels::INFO, message);
         }
+
+        void warn(const std::string& message) {
+            action(LogLevels::WARN, message);
+        }
+
+        void error(const std::string& message) {
+            action(LogLevels::ERROR, message);
+        }
+
+        void critical(const std::string& message) {
+            action(CRITICAL, message);
+        }
+
+        private:
+        bool openLogFileFailed = false;
+        
+        void action(int logLevel, const std::string message) {
+            std::string line;
+            time_t nowTime = time(NULL);
+            struct tm *now = localtime(&nowTime);
+            char str[20];
+            strftime(str, sizeof(str), "%T", now);
+            std::string logLevelStr;
+            switch (logLevel) {
+                case DEBUG: logLevelStr = std::string("DEBUG"); break;
+                case INFO: logLevelStr = std::string("INFO"); break;
+                case WARN: logLevelStr = std::string("WARN"); break;
+                case ERROR: logLevelStr = std::string("ERROR"); break;
+                case CRITICAL: logLevelStr = std::string("CRITICAL"); break;
+                default: logLevelStr = std::string("UNKNOWN"); break;
+            };
+            line = std::string(str) + " - [" + logLevelStr + "] " + message + "\n";
+            print(line);
+            addToFile(line);
+        }
+
+        void print(const std::string& message) {
+            std::cout << message;
+        }
+        
+        void addToFile(const std::string& message) {
+            if (!openLogFileFailed) {
+                ofstream logFile;
+                logFile.open(filepath, std::ios_base::app);
+                if (logFile.is_open()) {
+                    logFile << message;
+                }   
+                else { openLogFileFailed = true; }
+                logFile.close();
+            }
+        }
+        
 };