5 files changed, 124 insertions, 5 deletions

diff --git a/src/main/java/musichub/main/Main.java b/src/main/java/musichub/main/Main.java
index e2e4731..e7ca721 100644
--- a/src/main/java/musichub/main/Main.java
+++ b/src/main/java/musichub/main/Main.java
@@ -1,6 +1,7 @@
 package musichub.main;
 
 import musichub.business.*;
+import musichub.util.LogHandler;
 
 import javax.sound.sampled.LineUnavailableException;
 import javax.sound.sampled.UnsupportedAudioFileException;
@@ -9,7 +10,7 @@ import java.util.Iterator;
 import java.util.List;
 import java.util.Scanner;
 
-import static musichub.business.PathValidation.isPathValid;
+import static musichub.util.PathValidation.isPathValid;
 
 public class Main {
     public static void main(String[] args) throws UnsupportedAudioFileException, IOException, LineUnavailableException {
@@ -93,7 +94,9 @@ public class Main {
                     System.out.println("Song content: ");
                     String content = scan.nextLine();
                     if (!isPathValid(content)) {
-                        System.out.println("The music file was not found with the path you've provided.\nType h for available commands");
+                        String logMsg = "The music file was not found with the path you've provided.";
+                        LogHandler.write(logMsg, "WARNING"); //write a line in the log file
+                        System.out.println(logMsg + "\nType h for available commands");
                         choice = scan.nextLine();
                         break;
                     }
@@ -240,6 +243,12 @@ public class Main {
                     printAvailableCommands();
                     choice = scan.nextLine();
                     break;
+                case 'o':
+                    //consult the app logs
+                    LogHandler.read();
+                    System.out.println("Type h for available commands");
+                    choice = scan.nextLine();
+                    break;
                 default:
 
                     break;
@@ -260,6 +269,7 @@ public class Main {
         System.out.println("p: create a new playlist from existing songs and audio books");
         System.out.println("-: delete an existing playlist");
         System.out.println("s: save elements, albums, playlists");
+        System.out.println("o: consult the app logs");
         System.out.println("q: quit program");
     }
 }
\ No newline at end of file
diff --git a/src/main/java/musichub/util/LogHandler.java b/src/main/java/musichub/util/LogHandler.java
new file mode 100644
index 0000000..988b149
--- /dev/null
+++ b/src/main/java/musichub/util/LogHandler.java
@@ -0,0 +1,68 @@
+package musichub.util;
+
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.StandardOpenOption;
+import java.sql.Timestamp;
+
+/**
+ * Class offering a log writing method.
+ *
+ * @author Aimeric ADJUTOR
+ * @version 1.0
+ */
+
+public final class LogHandler {
+
+    /**
+     * Method that just throws an AssertionError if the class is called
+     *
+     * @throws AssertionError you can't instantiate this class
+     * @author Aimeric ADJUTOR
+     */
+
+    public LogHandler() {
+        throw new AssertionError("You just can't instantiate this class.");
+    }
+
+    /**
+     * Method that writes a log message to spoteezer.log
+     *
+     * @param msg  the message to write
+     * @param type the type of log
+     * @throws IOException if the file's not there
+     */
+    public static void write(String msg, String type) throws IOException {
+
+        Timestamp timestamp = new Timestamp(System.currentTimeMillis());
+
+        //Create the log using the given message
+        String logMsg = "\n[" + timestamp + "] " + type + ": " + msg;
+
+        // Define the file name of the file
+        Path fileName = Path.of("log/spoteezer.log");
+
+        // Write into the file
+        Files.writeString(fileName, logMsg, StandardOpenOption.APPEND);
+
+
+    }
+
+    /**
+     * Method that prints the content of spoteezer.log
+     *
+     * @throws IOException if the file's not there
+     */
+    public static void read() throws IOException {
+        Path fileName = Path.of("log/spoteezer.log");
+
+        // Read the content of the file
+        String file_content = Files.readString(fileName);
+
+        // Print the content inside the file
+        System.out.println("\n" + file_content + "\n");
+
+    }
+
+}
\ No newline at end of file
diff --git a/src/main/java/musichub/business/PathValidation.java b/src/main/java/musichub/util/PathValidation.java
index b0281ba..df11388 100644
--- a/src/main/java/musichub/business/PathValidation.java
+++ b/src/main/java/musichub/util/PathValidation.java
@@ -1,4 +1,4 @@
-package musichub.business;
+package musichub.util;
 
 import java.nio.file.Files;
 import java.nio.file.Path;
diff --git a/src/test/java/musichub/util/LogHandlerTest.java b/src/test/java/musichub/util/LogHandlerTest.java
new file mode 100644
index 0000000..17b47f6
--- /dev/null
+++ b/src/test/java/musichub/util/LogHandlerTest.java
@@ -0,0 +1,41 @@
+package musichub.util;
+
+
+import org.junit.jupiter.api.Test;
+
+import java.io.IOException;
+
+import static musichub.util.LogHandler.read;
+import static musichub.util.LogHandler.write;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+public class LogHandlerTest {
+    @Test
+    void testWrite() {
+        try {
+            write("JUnit test", "INFO");
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+    }
+
+    @Test
+    void testRead() {
+        try {
+            read();
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+    }
+
+    @Test
+    void testLogHandlerClass() {
+        try {
+            LogHandler logHandlerClass = new LogHandler();
+        } catch (Error ex) {
+            assertTrue(ex instanceof AssertionError);
+            assertEquals("You just can't instantiate this class.", ex.getMessage());
+        }
+    }
+}
diff --git a/src/test/java/musichub/business/PathValidationTest.java b/src/test/java/musichub/util/PathValidationTest.java
index fffbdde..4c7a3d6 100644
--- a/src/test/java/musichub/business/PathValidationTest.java
+++ b/src/test/java/musichub/util/PathValidationTest.java
@@ -1,9 +1,9 @@
-package musichub.business;
+package musichub.util;
 
 
 import org.junit.jupiter.api.Test;
 
-import static musichub.business.PathValidation.isPathValid;
+import static musichub.util.PathValidation.isPathValid;
 import static org.junit.jupiter.api.Assertions.*;
 
 public class PathValidationTest {