changed usage function

giteainstall

@@ -36,19 +36,28 @@ fallbackversion=$(<fallback)
 #
 # Function usage
 #
-usage () {
+usage() {
     printf -- "\ngiteainstall\n\n"
-    printf -- "%s\n\n" "$socket"
-    printf -- "Usage:\n"
-    printf -- "sudo ./giteainstall -n <gitea domain> -p <gitea database password> [options]\n\n"
+
+    if [[ "$socketauth" == "yes" ]]; then
+        printf -- "SOCKET DETECTED — no need for -a or -m\n\n"
+        printf -- "Installs Gitea (single instance) using MariaDB socket authentication.\n\n"
+        printf -- "Usage:\n"
+        printf -- "  sudo ./giteainstall -n <gitea domain> -p <gitea database password>\n\n"
+        printf -- "Example:\n"
+        printf -- "  sudo ./giteainstall -n git.example.com -p giteadbpwd\n\n"
+    else
+        printf -- "NO SOCKET DETECTED — you must use -a and -m\n\n"
+        printf -- "Installs Gitea (single instance) using MariaDB admin credentials.\n\n"
+        printf -- "Usage:\n"
+        printf -- "  sudo ./giteainstall -n <gitea domain> -p <gitea database password> -m <adminpwd> [-a <adminuser>]\n\n"
+        printf -- "Examples:\n"
+        printf -- "  sudo ./giteainstall -n git.example.com -p giteadbpwd -m rootpwd\n"
+        printf -- "  sudo ./giteainstall -n git.example.com -p giteadbpwd -a admin -m adminpwd\n\n"
+    fi
+
     printf -- "Options:\n"
-    printf -- "  -a <mariadb admin user>     Optional admin username $socketusage\n"
-    printf -- "  -m <mariadb admin password> Optional admin password $socketusage\n"
-    printf -- "  -h | -help | --help         Show this help screen\n\n"
-    printf -- "Examples:\n"
-    printf -- "  sudo ./giteainstall -n git.example.com -p giteadbpwd\n"
-    printf -- "  sudo ./giteainstall -n git.example.com -p giteadbpwd -m rootpwd\n"
-    printf -- "  sudo ./giteainstall -n git.example.com -p giteadbpwd -a admin -m adminpwd\n\n"
+    printf -- "  -h | -help | --help   Show this help screen\n\n"
 }
 
 #