Added a SuggestionHelper class to improved Time and general command args suggestions

Author: LarsEsDoch

src/main/java/dev/lars/utilsmanager/utils/SuggestHelper.java

@@ -0,0 +1,73 @@
+package dev.lars.utilsmanager.utils;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.List;
+
+public class SuggestHelper {
+
+    public static Collection<String> filter(String input, String... values) {
+        String lower = input.toLowerCase();
+        return Arrays.stream(values)
+                .filter(v -> v.toLowerCase().startsWith(lower))
+                .toList();
+    }
+
+    public static List<String> getTimeSuggestions(String input) {
+        List<String> suggestions = new ArrayList<>();
+
+        if (input == null || input.isBlank()) {
+            return List.of("30s", "5m", "15m", "1h", "12h", "1d", "7d");
+        }
+
+        String trimmed = input.trim().toLowerCase();
+
+        if (trimmed.matches("\\d+")) {
+            long number = Long.parseLong(trimmed);
+
+            suggestions.add(number + "s");
+            suggestions.add(number + "m");
+            suggestions.add(number + "h");
+            suggestions.add(number + "d");
+
+            long nextNumber = number * 10;
+            if (nextNumber <= 999999) {
+                suggestions.add(nextNumber + "s");
+                suggestions.add(nextNumber + "m");
+                suggestions.add(nextNumber + "h");
+                suggestions.add(nextNumber + "d");
+            }
+
+            return suggestions;
+        }
+
+
+        if (trimmed.matches("\\d+[smhd]")) {
+            suggestions.add(trimmed);
+            return suggestions;
+        }
+
+        String[] allSuggestions = {"30s", "5m", "15m", "1h", "12h", "1d", "7d"};
+        for (String suggestion : allSuggestions) {
+            if (suggestion.startsWith(trimmed)) {
+                suggestions.add(suggestion);
+            }
+        }
+
+        return suggestions.isEmpty() ? List.of() : suggestions;
+    }
+
+    public static List<String> getFilteredTimeSuggestions(String input) {
+        List<String> allSuggestions = getTimeSuggestions(input);
+
+        if (input == null || input.isBlank()) {
+            return allSuggestions;
+        }
+
+        String lower = input.toLowerCase();
+        return allSuggestions.stream()
+                .filter(s -> s.startsWith(lower))
+                .toList();
+    }
+}