1 files changed, 82 insertions, 0 deletions
diff --git a/packages/merchant-backoffice-ui/src/context/backend.ts b/packages/merchant-backoffice-ui/src/context/backend.ts
new file mode 100644
index 000000000..9ef7bfdea
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+++ b/packages/merchant-backoffice-ui/src/context/backend.ts
@@ -0,0 +1,82 @@
+/*
+ This file is part of GNU Taler
+ (C) 2021 Taler Systems S.A.
+
+ GNU Taler is free software; you can redistribute it and/or modify it under the
+ terms of the GNU General Public License as published by the Free Software
+ Foundation; either version 3, or (at your option) any later version.
+
+ GNU Taler is distributed in the hope that it will be useful, but WITHOUT ANY
+ WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+ A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License along with
+ GNU Taler; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
+ */
+
+/**
+*
+* @author Sebastian Javier Marchano (sebasjm)
+*/
+
+import { createContext, h, VNode } from 'preact'
+import { useCallback, useContext, useState } from 'preact/hooks'
+import { useBackendDefaultToken, useBackendURL } from '../hooks';
+
+interface BackendContextType {
+  url: string;
+  token?: string;
+  triedToLog: boolean;
+  resetBackend: () => void;
+  clearAllTokens: () => void;
+  addTokenCleaner: (c: () => void) => void;
+  updateLoginStatus: (url: string, token?: string) => void;
+}
+
+const BackendContext = createContext<BackendContextType>({
+  url: '',
+  token: undefined,
+  triedToLog: false,
+  resetBackend: () => null,
+  clearAllTokens: () => null,
+  addTokenCleaner: () => null,
+  updateLoginStatus: () => null,
+})
+
+function useBackendContextState(defaultUrl?: string, initialToken?: string): BackendContextType {
+  const [url, triedToLog, changeBackend, resetBackend] = useBackendURL(defaultUrl);
+  const [token, _updateToken] = useBackendDefaultToken(initialToken);
+  const updateToken = (t?: string) => {
+    _updateToken(t)
+  }
+
+  const tokenCleaner = useCallback(() => { updateToken(undefined) }, [])
+  const [cleaners, setCleaners] = useState([tokenCleaner])
+  const addTokenCleaner = (c: () => void) => setCleaners(cs => [...cs, c])
+  const addTokenCleanerMemo = useCallback((c: () => void) => { addTokenCleaner(c) }, [tokenCleaner])
+
+  const clearAllTokens = () => {
+    cleaners.forEach(c => c())
+    for (let i = 0; i < localStorage.length; i++) {
+      const k = localStorage.key(i)
+      if (k && /^backend-token/.test(k)) localStorage.removeItem(k)
+    }
+    resetBackend()
+  }
+
+  const updateLoginStatus = (url: string, token?: string) => {
+    changeBackend(url);
+    if (token) updateToken(token);
+  };
+
+
+  return { url, token, triedToLog, updateLoginStatus, resetBackend, clearAllTokens, addTokenCleaner: addTokenCleanerMemo }
+}
+
+export const BackendContextProvider = ({ children, defaultUrl, initialToken }: { children: any, defaultUrl?: string, initialToken?: string }): VNode => {
+  const value = useBackendContextState(defaultUrl, initialToken)
+
+  return h(BackendContext.Provider, { value, children });
+}
+
+export const useBackendContext = (): BackendContextType => useContext(BackendContext);