feat: client-side sign-in authorization system

1 files changed, 28 insertions, 0 deletions

diff --git a/shared/src/main/java/kz/ilotterytea/frogartha/utils/RandomUtils.java b/shared/src/main/java/kz/ilotterytea/frogartha/utils/RandomUtils.java
new file mode 100644
index 0000000..2933aac
--- /dev/null
+++ b/shared/src/main/java/kz/ilotterytea/frogartha/utils/RandomUtils.java
@@ -0,0 +1,28 @@
+package kz.ilotterytea.frogartha.utils;
+
+import java.util.Random;
+
+public class RandomUtils {
+    public static final char[] CHARACTER_POOL = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789".toCharArray();
+    public static final int TOKEN_LENGTH = 32;
+
+    public static String generateRandomString() {
+        return generateRandomString(CHARACTER_POOL, TOKEN_LENGTH);
+    }
+
+    public static String generateRandomString(int length) {
+        return generateRandomString(CHARACTER_POOL, length);
+    }
+
+    public static String generateRandomString(char[] characterPool, int length) {
+        StringBuilder output = new StringBuilder();
+        Random random = new Random();
+
+        for (int i = 0; i < length; i++) {
+            char character = characterPool[random.nextInt(0, characterPool.length)];
+            output.append(character);
+        }
+
+        return output.toString();
+    }
+}