[taler-wallet-core] branch master updated: imported useNotifications, new memory storage hook and fixed but in localstorage

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sebasjm pushed a commit to branch master
in repository wallet-core.

The following commit(s) were added to refs/heads/master by this push:
     new 35cc13e22 imported useNotifications, new memory storage hook and fixed 
but in localstorage
35cc13e22 is described below

commit 35cc13e229ddc4953a1e68b6b7ea18c54eb9a70b
Author: Sebastian <sebasjm@gmail.com>
AuthorDate: Fri May 19 13:24:30 2023 -0300

    imported useNotifications, new memory storage hook and fixed but in 
localstorage
---
 packages/web-util/src/hooks/index.ts               |  6 ++
 packages/web-util/src/hooks/useLocalStorage.ts     |  2 +-
 .../{useLocalStorage.ts => useMemoryStorage.ts}    | 22 ++-----
 packages/web-util/src/hooks/useNotifications.ts    | 67 ++++++++++++++++++++++
 4 files changed, 79 insertions(+), 18 deletions(-)

diff --git a/packages/web-util/src/hooks/index.ts 
b/packages/web-util/src/hooks/index.ts
index e5cb54e21..ae8872497 100644
--- a/packages/web-util/src/hooks/index.ts
+++ b/packages/web-util/src/hooks/index.ts
@@ -1,5 +1,11 @@
 export { useLang } from "./useLang.js";
 export { useLocalStorage } from "./useLocalStorage.js";
+export { useMemoryStorage } from "./useMemoryStorage.js";
+export {
+  useNotifications,
+  notifyError,
+  notifyInfo,
+} from "./useNotifications.js";
 export {
   useAsyncAsHook,
   HookError,
diff --git a/packages/web-util/src/hooks/useLocalStorage.ts 
b/packages/web-util/src/hooks/useLocalStorage.ts
index 495c9b0f8..131825736 100644
--- a/packages/web-util/src/hooks/useLocalStorage.ts
+++ b/packages/web-util/src/hooks/useLocalStorage.ts
@@ -70,7 +70,7 @@ export function useLocalStorage(
   }, []);
 
   const setValue = (value?: string): void => {
-    if (!value) {
+    if (value === undefined) {
       storage.delete(key);
     } else {
       storage.set(key, value);
diff --git a/packages/web-util/src/hooks/useLocalStorage.ts 
b/packages/web-util/src/hooks/useMemoryStorage.ts
similarity index 75%
copy from packages/web-util/src/hooks/useLocalStorage.ts
copy to packages/web-util/src/hooks/useMemoryStorage.ts
index 495c9b0f8..7160b035e 100644
--- a/packages/web-util/src/hooks/useLocalStorage.ts
+++ b/packages/web-util/src/hooks/useMemoryStorage.ts
@@ -33,26 +33,14 @@ export interface LocalStorageState {
   reset: () => void;
 }
 
-const supportLocalStorage = typeof window !== "undefined";
-const supportBrowserStorage =
-  typeof chrome !== "undefined" && typeof chrome.storage !== "undefined";
+const storage: ObservableMap<string, string> = memoryMap<string>();
 
-const storage: ObservableMap<string, string> = (function buildStorage() {
-  if (supportBrowserStorage) {
-    return browserStorageMap(memoryMap<string>());
-  } else if (supportLocalStorage) {
-    return localStorageMap();
-  } else {
-    return memoryMap<string>();
-  }
-})();
-
-export function useLocalStorage(
+export function useMemoryStorage(
   key: string,
   initialValue: string,
 ): Required<LocalStorageState>;
-export function useLocalStorage(key: string): LocalStorageState;
-export function useLocalStorage(
+export function useMemoryStorage(key: string): LocalStorageState;
+export function useMemoryStorage(
   key: string,
   initialValue?: string,
 ): LocalStorageState {
@@ -70,7 +58,7 @@ export function useLocalStorage(
   }, []);
 
   const setValue = (value?: string): void => {
-    if (!value) {
+    if (value === undefined) {
       storage.delete(key);
     } else {
       storage.set(key, value);
diff --git a/packages/web-util/src/hooks/useNotifications.ts 
b/packages/web-util/src/hooks/useNotifications.ts
new file mode 100644
index 000000000..deaa7a7c1
--- /dev/null
+++ b/packages/web-util/src/hooks/useNotifications.ts
@@ -0,0 +1,67 @@
+import { TranslatedString } from "@gnu-taler/taler-util";
+import { StateUpdater, useEffect, useState } from "preact/hooks";
+import { memoryMap } from "../index.browser.js";
+
+export type NotificationMessage = ErrorNotification | InfoNotification;
+
+interface ErrorNotification {
+  type: "error";
+  title: TranslatedString;
+  description?: TranslatedString;
+  debug?: string;
+}
+interface InfoNotification {
+  type: "info";
+  title: TranslatedString;
+}
+
+const storage = memoryMap<NotificationMessage[]>();
+const NOTIFICATION_KEY = "notification";
+
+export function notifyError(
+  title: TranslatedString,
+  description: TranslatedString | undefined,
+  debug?: any,
+) {
+  const currentState: NotificationMessage[] =
+    storage.get(NOTIFICATION_KEY) ?? [];
+  const newState = currentState.concat({
+    type: "error",
+    title,
+    description,
+    debug,
+  });
+  storage.set(NOTIFICATION_KEY, newState);
+}
+export function notifyInfo(title: TranslatedString) {
+  const currentState: NotificationMessage[] =
+    storage.get(NOTIFICATION_KEY) ?? [];
+  const newState = currentState.concat({ type: "info", title });
+  storage.set(NOTIFICATION_KEY, newState);
+}
+
+type Notification = {
+  message: NotificationMessage;
+  remove: () => void;
+};
+
+export function useNotifications(): Notification[] {
+  const [value, setter] = useState<NotificationMessage[]>([]);
+  useEffect(() => {
+    return storage.onUpdate(NOTIFICATION_KEY, () => {
+      const mem = storage.get(NOTIFICATION_KEY) ?? [];
+      setter(mem);
+    });
+  });
+  return value.map((message, idx) => {
+    return {
+      message,
+      remove: () => {
+        const mem = storage.get(NOTIFICATION_KEY) ?? [];
+        const newState = Array.from(mem);
+        newState.splice(idx, 1);
+        storage.set(NOTIFICATION_KEY, newState);
+      },
+    };
+  });
+}

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