Ужесточение имен каналов и удаление legacy USER_PARAM для описания

shine-server-db/src/main/java/shine/db/channels/ChannelNameRules.java

@@ -7,13 +7,13 @@ public final class ChannelNameRules {
     private static final int MIN_DISPLAY_NAME_LENGTH = 3;
     private static final int MAX_DISPLAY_NAME_LENGTH = 32;
     private static final Pattern DISPLAY_ALLOWED_PATTERN =
-            Pattern.compile("^[\\p{IsLatin}\\p{IsCyrillic}0-9 _-]+$");
+            Pattern.compile("^[A-Za-z0-9_-]+$");
 
     private ChannelNameRules() {}
 
     public static String normalizeDisplayName(String value) {
         if (value == null) return "";
-        return value.trim().replaceAll("\\s+", " ");
+        return value.trim();
     }
 
     public static String requireValidDisplayNameForCreate(String rawName) {
@@ -40,45 +40,10 @@ public final class ChannelNameRules {
             throw new IllegalArgumentException("channelName is blank");
         }
 
-        String lowered = normalized.toLowerCase(Locale.ROOT).replace('\u0451', '\u0435');
-        StringBuilder slug = new StringBuilder(lowered.length());
-        boolean pendingSeparator = false;
-
-        for (int i = 0; i < lowered.length(); ) {
-            int cp = lowered.codePointAt(i);
-            i += Character.charCount(cp);
-
-            if (cp == ' ' || cp == '_' || cp == '-') {
-                pendingSeparator = slug.length() > 0;
-                continue;
-            }
-
-            if (!isLatinOrCyrillicOrDigit(cp)) {
-                throw new IllegalArgumentException("channelName contains unsupported characters");
-            }
-
-            if (pendingSeparator && slug.length() > 0) {
-                slug.append('-');
-            }
-            pendingSeparator = false;
-            slug.appendCodePoint(cp);
+        String lowered = normalized.toLowerCase(Locale.ROOT);
+        if (!DISPLAY_ALLOWED_PATTERN.matcher(lowered).matches()) {
+            throw new IllegalArgumentException("channelName contains unsupported characters");
         }
-
-        int len = slug.length();
-        if (len > 0 && slug.charAt(len - 1) == '-') {
-            slug.deleteCharAt(len - 1);
-        }
-
-        if (slug.length() == 0) {
-            throw new IllegalArgumentException("channelName canonical slug is empty");
-        }
-
-        return slug.toString();
-    }
-
-    private static boolean isLatinOrCyrillicOrDigit(int cp) {
-        if (Character.isDigit(cp)) return true;
-        Character.UnicodeScript script = Character.UnicodeScript.of(cp);
-        return script == Character.UnicodeScript.LATIN || script == Character.UnicodeScript.CYRILLIC;
+        return lowered;
     }
 }