feat: add wallet address search form

Adds a Search Wallet form component - with validation, without any search logic.

package.json

@@ -12,6 +12,7 @@
     "@types/react-dom": "^18.2.18",
     "react": "^18.2.0",
     "react-dom": "^18.2.0",
+    "react-hook-form": "^7.49.2",
     "react-scripts": "5.0.1",
     "typescript": "^4.9.5",
     "web-vitals": "^2.1.4"

src/App.tsx

@@ -1,7 +1,13 @@
 import { Header } from './Header';
+import { WalletPage } from './WalletPage';
 
 function App() {
-  return <Header />;
+  return (
+    <>
+      <Header />
+      <WalletPage />
+    </>
+  );
 }
 
 export default App;

src/SearchWalletForm.tsx

@@ -0,0 +1,53 @@
+import { FieldError, useForm } from 'react-hook-form';
+import { SearchCriteria } from './api/types';
+
+type Props = {
+  onSearch: (search: SearchCriteria) => void;
+};
+
+export function SearchWalletForm({ onSearch }: Props) {
+  const {
+    register,
+    handleSubmit,
+    formState: { errors, isSubmitting },
+  } = useForm<SearchCriteria>();
+
+  const fieldStyle = 'flex flex-col mb-2';
+  function getEditorStyle(fieldError: FieldError | undefined) {
+    return fieldError ? 'border-red-500' : 'border-slate-300';
+  }
+  return (
+    <form noValidate className="border-b py-4" onSubmit={handleSubmit(onSearch)}>
+      <div className={fieldStyle}>
+        <label htmlFor="address">Wallet Address</label>
+        <input
+          type="text"
+          id="address"
+          {...register('address', { required: 'You must enter a wallet address' })}
+          className={getEditorStyle(errors.address)}
+        />
+        <ValidationError fieldError={errors.address} />
+      </div>
+      <div className={fieldStyle}>
+        <button
+          type="submit"
+          disabled={isSubmitting}
+          className="mt-2 h-10 px-6 font-semibold bg-slate-700 text-white self-start"
+        >
+          Search
+        </button>
+      </div>
+    </form>
+  );
+}
+
+function ValidationError({ fieldError }: { fieldError: FieldError | undefined }) {
+  if (!fieldError) {
+    return null;
+  }
+  return (
+    <div role="alert" className="text-red-500 text-xs mt-1">
+      {fieldError.message}
+    </div>
+  );
+}

src/WalletPage.tsx

@@ -0,0 +1,18 @@
+import { useState } from 'react';
+import { SearchCriteria } from './api/types';
+import { SearchWalletForm } from './SearchWalletForm';
+
+export function WalletPage() {
+  const [searchCriteria, setSearchCriteria] = useState<SearchCriteria | undefined>();
+
+  function handleSearch(search: SearchCriteria) {
+    setSearchCriteria(search);
+  }
+
+  return (
+    <main className="max-w-xs ml-auto mr-auto">
+      <SearchWalletForm onSearch={handleSearch} />
+      <div>Wallet balance and last ten transactions will be here.</div>
+    </main>
+  );
+}

src/api/types.ts

@@ -0,0 +1,3 @@
+export type SearchCriteria = {
+  address: string;
+};