From dbc3d25fec6227c98b6506308410e09aa2cb7df3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=BE=90=E6=B6=9B?= <midnite@outlook.com>
Date: Wed, 3 Apr 2024 13:14:47 +0800
Subject: [PATCH] =?UTF-8?q?feat(server):=E5=A2=9E=E5=8A=A0=E5=B7=A5?=
 =?UTF-8?q?=E5=85=B7=E5=87=BD=E6=95=B0=E3=80=82?=
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---
 license_server/src/utils.rs | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/license_server/src/utils.rs b/license_server/src/utils.rs
index b490034..b4c32c2 100644
--- a/license_server/src/utils.rs
+++ b/license_server/src/utils.rs
@@ -1,3 +1,5 @@
+use rand::{seq::SliceRandom, thread_rng};
+
 pub fn empty_to_none<S: Into<String>>(s: S) -> Option<String> {
     let s = s.into();
     if s.is_empty() {
@@ -6,3 +8,18 @@ pub fn empty_to_none<S: Into<String>>(s: S) -> Option<String> {
         Some(s)
     }
 }
+
+const RAND_LINCENSE_STR_SRC: &str = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
+
+pub fn generate_product_license_id() -> String {
+    let choices = RAND_LINCENSE_STR_SRC.as_bytes();
+    let mut rng = thread_rng();
+    let mut code: Vec<String> = vec![];
+    while code.len() < 10 {
+        match choices.choose(&mut rng) {
+            Some(c) => code.push(String::from_utf8(vec![*c]).unwrap()),
+            None => continue,
+        }
+    }
+    code.join("")
+}