Organize the util classes

src/main/java/dev/plex/util/TimeUtils.java

@@ -0,0 +1,73 @@
+package dev.plex.util;
+
+import java.time.LocalDateTime;
+import java.util.ArrayList;
+import java.util.Date;
+import java.util.List;
+import org.apache.commons.lang.math.NumberUtils;
+
+public class TimeUtils
+{
+    private static final List<String> timeUnits = new ArrayList<>()
+    {{
+        add("s");
+        add("m");
+        add("h");
+        add("d");
+        add("w");
+        add("mo");
+        add("y");
+    }};
+
+    private static int parseInteger(String s) throws NumberFormatException
+    {
+        if (!NumberUtils.isNumber(s))
+        {
+            throw new NumberFormatException();
+        }
+        return Integer.parseInt(s);
+    }
+
+    public static LocalDateTime createDate(String arg)
+    {
+        LocalDateTime time = LocalDateTime.now();
+        for (String unit : timeUnits)
+        {
+            if (arg.endsWith(unit))
+            {
+                int duration = parseInteger(arg.replace(unit, ""));
+                switch (unit)
+                {
+                    case "y" -> time = time.plusYears(duration);
+                    case "mo" -> time = time.plusMonths(duration);
+                    case "w" -> time = time.plusWeeks(duration);
+                    case "d" -> time = time.plusDays(duration);
+                    case "h" -> time = time.plusHours(duration);
+                    case "m" -> time = time.plusMinutes(duration);
+                    case "s" -> time = time.plusSeconds(duration);
+                }
+            }
+        }
+        return time;
+    }
+
+    public static long getDateNow()
+    {
+        return new Date().getTime();
+    }
+
+    public static Date getDateFromLong(long epoch)
+    {
+        return new Date(epoch);
+    }
+
+    public static long hoursToSeconds(long hours)
+    {
+        return hours * 3600;
+    }
+
+    public static long minutesToSeconds(long minutes)
+    {
+        return minutes * 60;
+    }
+}