feat: account switching

packages/app/src/Hooks/useLoginHandler.tsx

@@ -0,0 +1,55 @@
+import { useIntl } from "react-intl";
+import * as secp from "@noble/secp256k1";
+
+import { EmailRegex, MnemonicRegex } from "Const";
+import { LoginStore } from "Login";
+import { generateBip39Entropy, entropyToPrivateKey } from "nip6";
+import { getNip05PubKey } from "Pages/Login";
+import { bech32ToHex } from "Util";
+
+export default function useLoginHandler() {
+  const { formatMessage } = useIntl();
+  const hasSubtleCrypto = window.crypto.subtle !== undefined;
+
+  async function doLogin(key: string) {
+    const insecureMsg = formatMessage({
+      defaultMessage:
+        "Can't login with private key on an insecure connection, please use a Nostr key manager extension instead",
+    });
+    if (key.startsWith("nsec")) {
+      if (!hasSubtleCrypto) {
+        throw new Error(insecureMsg);
+      }
+      const hexKey = bech32ToHex(key);
+      if (secp.utils.isValidPrivateKey(hexKey)) {
+        LoginStore.loginWithPrivateKey(hexKey);
+      } else {
+        throw new Error("INVALID PRIVATE KEY");
+      }
+    } else if (key.startsWith("npub")) {
+      const hexKey = bech32ToHex(key);
+      LoginStore.loginWithPubkey(hexKey);
+    } else if (key.match(EmailRegex)) {
+      const hexKey = await getNip05PubKey(key);
+      LoginStore.loginWithPubkey(hexKey);
+    } else if (key.match(MnemonicRegex)) {
+      if (!hasSubtleCrypto) {
+        throw new Error(insecureMsg);
+      }
+      const ent = generateBip39Entropy(key);
+      const keyHex = entropyToPrivateKey(ent);
+      LoginStore.loginWithPrivateKey(keyHex);
+    } else if (secp.utils.isValidPrivateKey(key)) {
+      if (!hasSubtleCrypto) {
+        throw new Error(insecureMsg);
+      }
+      LoginStore.loginWithPrivateKey(key);
+    } else {
+      throw new Error("INVALID PRIVATE KEY");
+    }
+  }
+
+  return {
+    doLogin,
+  };
+}