Příprava ukládání bankovního účtu

client/src/context/bank.tsx

@@ -0,0 +1,74 @@
+import React, { ReactNode, useContext, useState } from "react"
+import { useEffect } from "react"
+
+const BANK_ACCOUNT_NUMBER_KEY = 'bank_account_number';
+const BANK_ACCOUNT_HOLDER_KEY = 'bank_account_holder_name';
+
+export type BankContextProps = {
+  bankAccount?: string,
+  holderName?: string,
+  setBankAccountNumber: (accountNumber?: string) => void,
+  setBankAccountHolderName: (holderName?: string) => void,
+}
+
+type ContextProps = {
+  children: ReactNode
+}
+
+const bankContext = React.createContext<BankContextProps | null>(null);
+
+export function ProvideBank(props: ContextProps) {
+  const bank = useProvideBank();
+  return <bankContext.Provider value={bank}>{props.children}</bankContext.Provider>
+}
+
+export const useBank = () => {
+  return useContext(bankContext);
+}
+
+function useProvideBank(): BankContextProps {
+  const [bankAccount, setBankAccount] = useState<string | undefined>();
+  const [holderName, setHolderName] = useState<string | undefined>();
+
+  useEffect(() => {
+    const accountNumber = localStorage.getItem(BANK_ACCOUNT_NUMBER_KEY);
+    if (accountNumber) {
+      setBankAccount(accountNumber);
+    }
+    const holderName = localStorage.getItem(BANK_ACCOUNT_HOLDER_KEY);
+    if (holderName) {
+      setHolderName(holderName);
+    }
+  }, [])
+
+  useEffect(() => {
+    if (bankAccount) {
+      localStorage.setItem(BANK_ACCOUNT_NUMBER_KEY, bankAccount)
+    } else {
+      localStorage.removeItem(BANK_ACCOUNT_NUMBER_KEY);
+    }
+  }, [bankAccount]);
+
+  useEffect(() => {
+    if (holderName) {
+      localStorage.setItem(BANK_ACCOUNT_HOLDER_KEY, holderName);
+    } else {
+      localStorage.removeItem(BANK_ACCOUNT_HOLDER_KEY);
+    }
+  }, [holderName]);
+
+  function setBankAccountNumber(bankAccount?: string) {
+    setBankAccount(bankAccount);
+  }
+
+  function setBankAccountHolderName(holderName?: string) {
+    setHolderName(holderName);
+  }
+
+  return {
+    bankAccount,
+    holderName,
+    setBankAccountNumber,
+    setBankAccountHolderName,
+  }
+}