add spinner to button

components/book/index.tsx

@@ -3,6 +3,7 @@ import Contact from './contact'
 import BookProvider, { BookContext } from '../../context/book'
 import DateSelect from './dateSelect'
 import Reason from './reason'
+import Button from '../button'
 
 function BookForm() {
   const { onSubmit, state, forgetData } = useContext(BookContext)
@@ -32,9 +33,9 @@ function BookForm() {
         )}
         <Contact />
         <div className="flex items-end">
-          <button type="submit" disabled={postData} className="btn btn-blue">
+          <Button type="submit" loading={!!postData} disabled={postData}>
             {postData ? 'Speichern...' : 'Absenden'}
-          </button>
+          </Button>
           {postDataError && (
             <div className="error-message flex-grow">{postDataError}</div>
           )}

components/button.tsx

@@ -0,0 +1,13 @@
+const Button = ({ children, loading = false, ...rest }) => {
+  return (<button className="btn btn-blue" {...rest}>
+    {loading &&
+      <svg className="inline animate-spin -ml-1 mr-3 h-4 w-4 text-white" xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24">
+        <circle className="opacity-25" cx="12" cy="12" r="10" stroke="currentColor" stroke-width="4"></circle>
+        <path className="opacity-75" fill="currentColor" d="M4 12a8 8 0 018-8V0C5.373 0 0 5.373 0 12h4zm2 5.291A7.962 7.962 0 014 12H0c0 3.042 1.135 5.824 3 7.938l3-2.647z"></path>
+      </svg>
+    }
+    {children}
+  </button>);
+}
+
+export default Button;