Export hooks and constants, add balance required

.gitignore

@@ -4,6 +4,7 @@
 /coverage
 /build
 .DS_Store
+.idea
 .env.local
 .env.development.local
 .env.test.local

src/index.tsx → src/Swap.tsx

@@ -1,33 +1,18 @@
 import { ReactElement } from "react";
-import { PublicKey } from "@solana/web3.js";
-import { TokenListContainer } from "@solana/spl-token-registry";
-import { Provider } from "@project-serum/anchor";
 import { Swap as SwapClient } from "@project-serum/swap";
 import {
   createMuiTheme,
   ThemeOptions,
   ThemeProvider,
 } from "@material-ui/core/styles";
-import {
-  SwapContextProvider,
-  useSwapContext,
-  useSwapFair,
-} from "./context/Swap";
-import {
-  DexContextProvider,
-  useBbo,
-  useFairRoute,
-  useMarketName,
-} from "./context/Dex";
-import { TokenListContextProvider, useTokenMap } from "./context/TokenList";
-import { TokenContextProvider, useMint } from "./context/Token";
-import SwapCard, {
-  ArrowButton,
-  SwapButton,
-  SwapHeader,
-  SwapTokenForm,
-} from "./components/Swap";
-import TokenDialog from "./components/TokenDialog";
+import { TokenListContextProvider } from "./context/TokenList";
+import { TokenContextProvider } from "./context/Token";
+import { DexContextProvider } from "./context/Dex";
+import { SwapContextProvider } from "./context/Swap";
+import SwapCard from "./components/Swap";
+import { Provider } from "@project-serum/anchor";
+import { TokenListContainer } from "@solana/spl-token-registry";
+import { PublicKey } from "@solana/web3.js";
 
 /**
  * A`Swap` component that can be embedded into applications. To use,
@@ -166,30 +151,3 @@ export type SwapProps = {
    */
   swapTokenContainerStyle?: any;
 };
-
-export {
-  // Components.
-  Swap,
-  SwapCard,
-  SwapHeader,
-  SwapTokenForm,
-  ArrowButton,
-  SwapButton,
-  TokenDialog,
-  // Providers and context.
-  // Swap.
-  SwapContextProvider,
-  useSwapContext,
-  useSwapFair,
-  // TokenList.
-  TokenListContextProvider,
-  useTokenMap,
-  // Token.
-  TokenContextProvider,
-  useMint,
-  // Dex.
-  DexContextProvider,
-  useFairRoute,
-  useMarketName,
-  useBbo,
-};

src/context/Swap.tsx

@@ -20,7 +20,7 @@ import {
   SPL_REGISTRY_SOLLET_TAG,
   SPL_REGISTRY_WORM_TAG,
 } from "./TokenList";
-import { useOwnedTokenAccount } from "../context/Token";
+import { useMint, useOwnedTokenAccount } from "../context/Token";
 
 const DEFAULT_SLIPPAGE_PERCENT = 0.5;
 
@@ -184,6 +184,15 @@ export function useCanSwap(): boolean {
   const fromWallet = useOwnedTokenAccount(fromMint);
   const fair = useSwapFair();
   const route = useRouteVerbose(fromMint, toMint);
+
+  const fromTokenAccount = useOwnedTokenAccount(fromMint);
+  const fromMintAccount = useMint(fromMint);
+  const fromBalance =
+    fromTokenAccount &&
+    fromMintAccount &&
+    fromTokenAccount.account.amount.toNumber() / 10 ** fromMintAccount.decimals;
+  const hasFromBalance = (fromBalance || 0) >= fromAmount;
+
   if (route === null) {
     return false;
   }
@@ -202,6 +211,8 @@ export function useCanSwap(): boolean {
     // Trade amounts greater than zero.
     fromAmount > 0 &&
     toAmount > 0 &&
+    // From token account has enougth balance
+    hasFromBalance &&
     // Trade route exists.
     route !== null &&
     // Wormhole <-> native markets must have the wormhole token as the

src/index.ts

@@ -0,0 +1,78 @@
+import {
+  SwapContextProvider,
+  useSwapContext,
+  useSwapFair,
+  useCanSwap,
+  useReferral,
+} from "./context/Swap";
+import {
+  DexContextProvider,
+  useDexContext,
+  useOpenOrders,
+  useFairRoute,
+  useRouteVerbose,
+  useMarketName,
+  useMarket,
+  useBbo,
+  FEE_MULTIPLIER,
+} from "./context/Dex";
+import {
+  TokenListContextProvider,
+  useSwappableTokens,
+  useTokenMap,
+} from "./context/TokenList";
+import {
+  TokenContextProvider,
+  useOwnedTokenAccount,
+  useMint,
+} from "./context/Token";
+import SwapCard, {
+  ArrowButton,
+  SwapButton,
+  SwapHeader,
+  SwapTokenForm,
+} from "./components/Swap";
+import TokenDialog from "./components/TokenDialog";
+import Swap from "./Swap";
+import { SOL_MINT, WRAPPED_SOL_MINT } from "./utils/pubkeys";
+
+export default Swap;
+
+export {
+  // Components.
+  Swap,
+  SwapCard,
+  SwapHeader,
+  SwapTokenForm,
+  ArrowButton,
+  SwapButton,
+  TokenDialog,
+  // Providers and context.
+  // Swap.
+  SwapContextProvider,
+  useSwapContext,
+  useSwapFair,
+  useCanSwap,
+  useReferral,
+  // TokenList.
+  TokenListContextProvider,
+  useTokenMap,
+  useSwappableTokens,
+  // Token.
+  TokenContextProvider,
+  useOwnedTokenAccount,
+  useMint,
+  // Dex.
+  DexContextProvider,
+  useDexContext,
+  useOpenOrders,
+  useFairRoute,
+  useRouteVerbose,
+  useMarketName,
+  useMarket,
+  useBbo,
+  FEE_MULTIPLIER,
+  // Utils
+  SOL_MINT,
+  WRAPPED_SOL_MINT,
+};