Enhance main menu functionality: increase window height, add menu options, and implement keyboard input handling for navigation.

src/tui.c

@@ -108,11 +108,16 @@ void uartDialog(char *uart_adress, int terminal_x, int terminal_y)
 
 void mainMenu(list_t *person_list, int terminal_x, int terminal_y)
 {
-    int win_height = 15;
+    int win_height = 30;
     int win_width = 80;
     int start_y = (terminal_y - win_height) / 2;
     int start_x = (terminal_x - win_width) / 2;
 
+    char choices[6][30] = {"List all employees","Find employee","Edit database","Save","Save as...","Exit"};
+
+    char keboard_input;
+    int highlight = 0;
+
     start_color();
     init_pair(1, COLOR_BLACK, COLOR_WHITE);
     init_pair(2, COLOR_WHITE, COLOR_RED);
@@ -125,5 +130,44 @@ void mainMenu(list_t *person_list, int terminal_x, int terminal_y)
     wattron(uartwin, COLOR_PAIR(1));
 
     wattroff(uartwin, COLOR_PAIR(1));
+    keypad(uartwin, true);
+
+    int text_x = (win_width - 52) / 2;
+
     wrefresh(uartwin);
+
+    while (1)
+    {
+        
+        flushinp();
+        keboard_input = wgetch(uartwin);
+
+        if (keboard_input == '\t')
+        {
+            highlight = !highlight;
+        }
+
+        else if (keboard_input == '\n')
+        {
+            if (highlight == 0)
+            {
+                
+            }
+            else if (highlight == 1)
+            {
+                if (keboard_input == '\n')
+                {
+                    wclear(uartwin);
+                    wrefresh(uartwin);
+                    touchwin(stdscr);
+                    refresh();
+                    delwin(uartwin);
+                    refresh();
+                    break;
+                }
+            }
+        }
+    }
 }
+    
+