From 623b4ed8eeb56688e6e0d5187254a019b1674824 Mon Sep 17 00:00:00 2001
From: Eric Corson <public@giraffedev.com>
Date: Wed, 9 Oct 2024 05:54:38 +0100
Subject: [PATCH] feat: add rough form for IBC withdrawals (#1133)

---
 apps/namadillo/src/App/Ibc/IbcWithdraw.tsx | 155 ++++++++++++++++++++-
 1 file changed, 153 insertions(+), 2 deletions(-)

diff --git a/apps/namadillo/src/App/Ibc/IbcWithdraw.tsx b/apps/namadillo/src/App/Ibc/IbcWithdraw.tsx
index 760440d2c..3f33187e7 100644
--- a/apps/namadillo/src/App/Ibc/IbcWithdraw.tsx
+++ b/apps/namadillo/src/App/Ibc/IbcWithdraw.tsx
@@ -1,9 +1,160 @@
+import { Key as KeplrKey, Window as KeplrWindow } from "@keplr-wallet/types";
 import { Panel } from "@namada/components";
+import { WindowWithNamada } from "@namada/types";
+import BigNumber from "bignumber.js";
+import { getSdkInstance } from "hooks";
+import { useAtomValue } from "jotai";
+import { useEffect, useState } from "react";
+
+import { NamCurrency } from "App/Common/NamCurrency";
+import { NamInput } from "App/Common/NamInput";
+import { accountBalanceAtom, defaultAccountAtom } from "atoms/accounts";
+import { chainAtom, chainParametersAtom } from "atoms/chain";
+import { getFirstError } from "atoms/utils";
+
+const keplr = (window as KeplrWindow).keplr!;
+const namada = (window as WindowWithNamada).namada!;
+
+const keplrChain = "theta-testnet-001";
+
+const buttonStyles = "bg-white my-2 p-2 block";
 
 export const IbcWithdraw: React.FC = () => {
+  const [error, setError] = useState("");
+  const [keplrAccount, setKeplrAccount] = useState<KeplrKey>();
+  const [amount, setAmount] = useState<BigNumber>();
+  const [channel, setChannel] = useState("");
+
+  const namadaAccount = useAtomValue(defaultAccountAtom);
+  const balance = useAtomValue(accountBalanceAtom);
+  const namadaChain = useAtomValue(chainAtom);
+  const namadaChainParams = useAtomValue(chainParametersAtom);
+
+  useEffect(() => {
+    const error = getFirstError(
+      namadaAccount,
+      balance,
+      namadaChain,
+      namadaChainParams
+    );
+    setError(error ? error.message : "");
+  }, [
+    namadaAccount.isError,
+    balance.isError,
+    namadaChain.isError,
+    namadaChainParams.isError,
+  ]);
+
+  const withErrorReporting =
+    (fn: () => Promise<void>): (() => Promise<void>) =>
+    async () => {
+      try {
+        await fn();
+        setError("");
+      } catch (e) {
+        // eslint-disable-next-line no-console
+        console.log(e);
+        setError(e instanceof Error ? e.message : "unknown error");
+      }
+    };
+
+  const getKeplrAccount = withErrorReporting(async () => {
+    const key = await keplr.getKey(keplrChain);
+    setKeplrAccount(key);
+  });
+
+  const submitIbcTransfer = withErrorReporting(async () => {
+    const wrapperTxProps = {
+      token: namadaChain.data!.nativeTokenAddress,
+      feeAmount: BigNumber(0),
+      gasLimit: BigNumber(1_000_000),
+      chainId: namadaChain.data!.chainId,
+      publicKey: namadaAccount.data!.publicKey,
+    };
+
+    const sdk = await getSdkInstance();
+    const tx = await sdk.tx.buildIbcTransfer(wrapperTxProps, {
+      source: namadaAccount.data!.address,
+      receiver: keplrAccount!.bech32Address,
+      token: namadaChain.data!.nativeTokenAddress,
+      amount: amount!,
+      portId: "transfer",
+      channelId: channel,
+      timeoutHeight: undefined,
+      timeoutSecOffset: undefined,
+      shieldingData: undefined,
+    });
+
+    const signedTxBytes = await namada.sign({
+      signer: namadaAccount.data!.address,
+      txs: [tx],
+      checksums: namadaChainParams.data!.checksums,
+    });
+
+    await sdk.rpc.broadcastTx(signedTxBytes![0], wrapperTxProps);
+  });
+
   return (
-    <Panel>
-      <div className="text-yellow">IBC: Withdraw (WIP)</div>
+    <Panel
+      title="IBC Namada -> Cosmos"
+      className="mb-2 bg-[#999999] text-black"
+    >
+      {/* Error */}
+      <p className="text-[#ff0000]">{error}</p>
+
+      <hr />
+
+      {/* Namada account */}
+      <h3>Namada account</h3>
+      {namadaAccount.isSuccess && typeof namadaAccount.data !== "undefined" && (
+        <p>
+          {namadaAccount.data.alias} {namadaAccount.data.address}
+        </p>
+      )}
+
+      <hr />
+
+      {/* Balance */}
+      <h3>Balance</h3>
+      {balance.isSuccess && <NamCurrency amount={balance.data} />}
+
+      <hr />
+
+      {/* Keplr address */}
+      <h3>Keplr address</h3>
+      <button className={buttonStyles} onClick={getKeplrAccount}>
+        get address
+      </button>
+
+      {keplrAccount && (
+        <p>
+          {keplrAccount.name} {keplrAccount.bech32Address}
+        </p>
+      )}
+
+      <hr />
+
+      {/* Amount */}
+      <h3>Amount to send</h3>
+      <NamInput value={amount} onChange={(e) => setAmount(e.target.value)} />
+
+      <hr />
+
+      {/* Channel */}
+      <h3>Channel</h3>
+      <input
+        type="text"
+        value={channel}
+        onChange={(e) => setChannel(e.target.value)}
+      />
+
+      <hr />
+
+      {/* Submit IBC transfer */}
+      <h3>Submit IBC transfer</h3>
+      <button className={buttonStyles} onClick={submitIbcTransfer}>
+        submit IBC transfer
+      </button>
     </Panel>
   );
 };