From bdc69c18c1986544497b6974ffe5d8e073e4be6d Mon Sep 17 00:00:00 2001
From: crupest <crupest@outlook.com>
Date: Thu, 14 Sep 2023 18:58:44 +0800
Subject: ...

---
 FrontEnd/src/components/hooks/index.ts             |  1 +
 .../components/hooks/useAutoUnsubscribePromise.tsx | 23 ++++++++++++++++++++++
 FrontEnd/src/components/index.css                  |  1 +
 3 files changed, 25 insertions(+)
 create mode 100644 FrontEnd/src/components/hooks/useAutoUnsubscribePromise.tsx

(limited to 'FrontEnd/src/components')

diff --git a/FrontEnd/src/components/hooks/index.ts b/FrontEnd/src/components/hooks/index.ts
index 771b0e2a..98ce729e 100644
--- a/FrontEnd/src/components/hooks/index.ts
+++ b/FrontEnd/src/components/hooks/index.ts
@@ -2,3 +2,4 @@ export { useMobile } from "./responsive";
 export { default as useClickOutside } from "./useClickOutside";
 export { default as useScrollToBottom } from "./useScrollToBottom";
 export { default as useWindowLeave } from "./useWindowLeave";
+export { default as useAutoUnsubscribePromise } from "./useAutoUnsubscribePromise";
diff --git a/FrontEnd/src/components/hooks/useAutoUnsubscribePromise.tsx b/FrontEnd/src/components/hooks/useAutoUnsubscribePromise.tsx
new file mode 100644
index 00000000..78e21151
--- /dev/null
+++ b/FrontEnd/src/components/hooks/useAutoUnsubscribePromise.tsx
@@ -0,0 +1,23 @@
+import { useEffect, DependencyList } from "react";
+
+export default function useAutoUnsubscribePromise<T>(
+  promiseGenerator: () => Promise<T> | null | undefined,
+  resultHandler: (data: T) => void,
+  dependencies?: DependencyList | undefined,
+) {
+  useEffect(() => {
+    let subscribe = true;
+    const promise = promiseGenerator();
+    if (promise) {
+      void promise.then((data) => {
+        if (subscribe) {
+          resultHandler(data);
+        }
+      });
+
+      return () => {
+        subscribe = false;
+      };
+    }
+  }, dependencies);
+}
diff --git a/FrontEnd/src/components/index.css b/FrontEnd/src/components/index.css
index de156e0e..83b48318 100644
--- a/FrontEnd/src/components/index.css
+++ b/FrontEnd/src/components/index.css
@@ -16,6 +16,7 @@ body {
 textarea {
   transition: border-color 0.3s;
   border-color: var(--cru-text-minor-color);
+  background: var(--cru-background-color);
 }
 
 textarea:hover {
-- 
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